# -*- Tcl -*-

package prefer latest

package require nx
package require nx::test

::nx::configure defaultMethodCallProtection false


nx::test case name-validity-checks {

  nx::Class create C

  #
  # Add some basic tests on valid/invalid method names.
  #

  ? {set ::h [nsf::method::create ::C "" {} {;}]} "invalid method name ''"
  ? {set ::h [nsf::method::create ::C {e1 m1} {} {;}]} "invalid method name 'e1 m1'"
  ? {set ::h [nsf::method::create ::C "e1\tm1" {} {;}]} "invalid method name 'e1\tm1'"
  ? {set ::h [nsf::method::create ::C {{e1 m1}} {} {;}]} "invalid method name '{e1 m1}'"
  ? {set ::h [nsf::method::create ::C ":" {} {;}]} {can't create procedure ":" in non-global namespace with name starting with ":"}

  # These are Tcl whitespace characters, which act as the separators in
  # Tcl list string reps:
  #
  # \u0009  \t      TAB
  # \u000A  \n      NEWLINE
  # \u000B  \v      VERTICAL TAB
  # \u000C  \f      FORM FEED
  # \u000D  \r      CARRIAGE RETURN
  # \u0020          SPACE
  #

  ? {set ::h [nsf::method::create ::C "  e1   " {} {;}]} "invalid method name '  e1   '"
  ? {set ::h [nsf::method::create ::C {"  e1   "} {} {;}]} {invalid method name '"  e1   "'}

  ? {set ::h [nsf::method::create ::C "\te1" {} {;}]} "invalid method name '\te1'"
  ? {set ::h [nsf::method::create ::C "e1\tm1" {} {;}]} "invalid method name 'e1\tm1'"

  ? {set ::h [nsf::method::create ::C "\ne1" {} {;}]} "invalid method name '\ne1'"
  ? {set ::h [nsf::method::create ::C "e1\nm1" {} {;}]} "invalid method name 'e1\nm1'"

  ? {set ::h [nsf::method::create ::C "\ve1" {} {;}]} "invalid method name '\ve1'"
  ? {set ::h [nsf::method::create ::C "e1\vm1" {} {;}]} "invalid method name 'e1\vm1'"

  ? {set ::h [nsf::method::create ::C "\fe1" {} {;}]} "invalid method name '\fe1'"
  ? {set ::h [nsf::method::create ::C "e1\fm1" {} {;}]} "invalid method name 'e1\fm1'"

  ? {set ::h [nsf::method::create ::C "\re1" {} {;}]} "invalid method name '\re1'"
  ? {set ::h [nsf::method::create ::C "e1\rm1" {} {;}]} "invalid method name 'e1\rm1'"


  # There is no tangible difference between a bareword and a one-element
  # list in Tcl (singleton list). So, there will remain exotique method
  # names including curly braces, along with other peculiar names,
  # e.g. those starting with #.
  ? {set ::h [nsf::method::create ::C {{{{{a}}}}} {} {;}]} {::nsf::classes::C::{{{{a}}}}}
  ? {set ::h [nsf::method::create ::C {#a} {} {;}]} {::nsf::classes::C::#a}

  #
  # In Tcl, the empty string is a valid command (proc) name, with
  # obscure effects (e.g., cannot be renamed, unless) . We disallow it as method name.
  #

  ? {set ::h [nsf::method::create ::C "" {} {;}]} "invalid method name ''"

  # But, we can safeguard against list elements containing Tcl
  # whitespace characters at any nesting level.
  ? {set ::h [nsf::method::create ::C {{{{{a b}}}}} {} {;}]} {invalid method name '{{{{a b}}}}'}
}


nx::test configure -count 10

nx::Class create C {
  # methods
  :method plain_method {} {return [current method]}
  :public method public_method {} {return [current method]}
  :protected method protected_method {} {return [current method]}

  # forwards
  :forward plain_forward %self plain_method
  :public forward public_forward %self public_method
  :protected forward protected_forward %self protected_method

  # setter
  :property plain_setter
  :property -accessor public public_setter
  :property -accessor protected protected_setter

  # alias
  :alias plain_alias [C info method registrationhandle plain_method]
  :public alias public_alias [C info method registrationhandle public_method]
  :protected alias protected_alias [C info method registrationhandle protected_method]

  # class-object
  :object method plain_object_method {} {return [current method]}
  :public object method public_object_method {} {return [current method]}
  :protected object method protected_object_method {}  {return [current method]}
  :object forward plain_object_forward %self plain_object_method
  :public object forward public_object_forward %self public_object_method
  :protected object forward protected_object_forward %self protected_object_method

  :object property {plain_object_setter ""}
  :object property -accessor public {public_object_setter ""}
  :object property -accessor protected {protected_object_setter ""}

  :object alias plain_object_alias [:info object method registrationhandle plain_object_method]
  :public object alias public_object_alias [:info object method registrationhandle public_object_method]
  :protected object alias protected_object_alias [:info object method registrationhandle protected_object_method]
}
C create c1 {
  # methods
  :object method plain_object_method {} {return [current method]}
  :public object method public_object_method {} {return [current method]}
  :protected object method protected_object_method {} {return [current method]}

  # forwards
  :object forward plain_object_forward %self plain_object_method
  :public object forward public_object_forward %self public_object_method
  :protected object forward protected_object_forward %self protected_object_method

  # setter
  :object property {plain_object_setter ""}
  :object property -accessor public {public_object_setter ""}
  :object property -accessor protected protected_object_setter

  # alias
  :object alias plain_object_alias [:info object method registrationhandle plain_object_method]
  :public object alias public_object_alias [:info object method registrationhandle public_object_method]
  :protected object alias protected_object_alias [:info object method registrationhandle protected_object_method]
}


C property -accessor public s0
C property -accessor protected s1
? {c1 s0 set 0} 0
? {::nsf::dispatch c1 s1 set 1} 1
C object property -accessor public {s3 ""}
? {C s3 set 3} 3


nx::test case info-callprotection {
  ? {C info method callprotection plain_method} "public"
  ? {C info method callprotection protected_method} "protected"
  ? {C info method callprotection public_method} "public"

  ? {C info method callprotection plain_alias} "public"
  ? {C info method callprotection protected_alias} "protected"
  ? {C info method callprotection public_alias} "public"

  ? {C info method callprotection plain_forward} "public"
  ? {C info method callprotection protected_forward} "protected"
  ? {C info method callprotection public_forward} "public"

  ? {C info object method callprotection plain_object_method} "public"
  ? {C info object method callprotection protected_object_method} "protected"
  ? {C info object method callprotection public_object_method} "public"

  ? {C info object method callprotection plain_object_alias} "public"
  ? {C info object method callprotection protected_object_alias} "protected"
  ? {C info object method callprotection public_object_alias} "public"

  ? {C info object method callprotection plain_object_forward} "public"
  ? {C info object method callprotection protected_object_forward} "protected"
  ? {C info object method callprotection public_object_forward} "public"

}

# create a fresh object (different from c1)
C create c2

# test scripted class level methods
nx::test case scripted-class-level-methods {
  ? {c2 plain_method} "plain_method"
  ? {c2 public_method} "public_method"
  ? {catch {c2 protected_method}} 1
  ? {::nsf::dispatch c2 protected_method} "protected_method"
  ? {info commands ::nsf::classes::C::public_method} ::nsf::classes::C::public_method
}

# class level forwards
nx::test case class-level-forwards {
  ? {c2 plain_forward} "plain_method"
  ? {c2 public_forward} "public_method"
  ? {catch {c2 protected_forward}} 1
  ? {::nsf::dispatch c2 protected_forward} "protected_method"
}

# class level setter
nx::test case class-level-setter {
  ? {c2 plain_setter 1} {::c2: unable to dispatch method 'plain_setter'}
  #? {c2 plain_setter 1} 1
  ? {c2 public_setter set 2} "2"
  ? {catch {c2 protected_setter set 3}} 1
  ? {::nsf::dispatch c2 protected_setter set 4} "4"
}

# class level alias ....
nx::test case class-level-alias {
  ? {c2 plain_alias} "plain_alias"
  ? {c2 public_alias} "public_alias"
  ? {catch {c2 protected_alias}} 1
  ? {::nsf::dispatch c2 protected_alias} "protected_alias"
}

###########

# scripted class level methods
nx::test case scripted-class-object-level {
  ? {C plain_object_method} "plain_object_method"
  ? {C public_object_method} "public_object_method"
  ? {catch {C protected_object_method}} 1
  ? {::nsf::dispatch C protected_object_method} "protected_object_method"
}

# class level forwards
nx::test case class-object-level-forwards {
  ? {C plain_object_forward} "plain_object_method"
  ? {C public_object_forward} "public_object_method"
  ? {catch {C protected_object_forward}} 1
  ? {::nsf::dispatch C protected_object_forward} "protected_object_method"
}

# class level setter
nx::test case class-object-level-setter {
  ? {C plain_object_setter 1} {method 'plain_object_setter' unknown for ::C; in order to create an instance of class ::C, consider using '::C create plain_object_setter ?...?'}
  #? {C plain_object_setter 1} "1"
  ? {C public_object_setter set 2} "2"
  ? {catch {C protected_object_setter set 3}} 1
  ? {::nsf::dispatch C protected_object_setter set 4} "4"
}

# class level alias ....
nx::test case class-object-level-alias {
  ? {C plain_object_alias} "plain_object_alias"
  ? {C public_object_alias} "public_object_alias"
  ? {catch {C protected_object_alias}} 1
  ? {::nsf::dispatch C protected_object_alias} "protected_object_alias"
}

###########

# scripted object level methods
nx::test case scripted-object-level-methods {
  ? {c1 plain_object_method} "plain_object_method"
  ? {c1 public_object_method} "public_object_method"
  ? {catch {c1 protected_object_method}} 1
  ? {::nsf::dispatch c1 protected_object_method} "protected_object_method"
  ? {info commands ::c1::public_object_method} ::c1::public_object_method
}

# object level forwards
nx::test case object-level-forwards {
  ? {c1 plain_object_forward} "plain_object_method"
  ? {c1 public_object_forward} "public_object_method"
  ? {catch {c1 protected_object_forward}} 1
  ? {::nsf::dispatch c1 protected_object_forward} "protected_object_method"
}

# object level setter
nx::test case object-level-setter {
  ? {c1 plain_object_setter 1} {::c1: unable to dispatch method 'plain_object_setter'}
  #? {c1 plain_object_setter 1} "1"
  ? {c1 public_object_setter set 2} "2"
  ? {catch {c1 protected_object_setter set 3}} 1
  ? {::nsf::dispatch c1 protected_object_setter set 4} "4"
}

# object level alias ....
nx::test case object-level-alias {
  ? {c1 plain_object_alias} "plain_object_alias"
  ? {c1 public_object_alias} "public_object_alias"
  ? {catch {c1 protected_object_alias}} 1
  ? {::nsf::dispatch c1 protected_object_alias} "protected_object_alias"

  #? {lsort [c1 info object methods]} \
      "plain_object_alias plain_object_forward plain_object_method public_object_alias public_object_forward public_object_method public_object_setter"
  ? {lsort [c1 info object methods]} \
      "plain_object_alias plain_object_forward plain_object_method public_object_alias public_object_forward public_object_method public_object_setter"

  #? {lsort [C info methods]} \
      "plain_object_alias plain_object_forward plain_object_method public_object_alias public_object_forward public_object_method public_object_setter s3"
  ? {lsort [C info object methods]} \
      "plain_object_alias plain_object_forward plain_object_method public_object_alias public_object_forward public_object_method public_object_setter s3"
}

C destroy

nx::test case colondispatch {
  nx::Object create ::o {
    #:public object method foo args {;}
    :public object method bar args {;}
  }
  ? {o :bar} "::o: method name ':bar' must not start with a colon"
  ? {o eval :bar} ""
  ? {o :foo} "::o: method name ':foo' must not start with a colon"
  ? {o eval :foo} "::o: unable to dispatch method 'foo'"
}

nx::test case colon-unknown {
  set o [nx::Object new {
    :object method foo {a b c args} { return [current method]-ok }

    ## Expansion to valid method calls (messages)
    :object method expand-nonempty-list-1 {} {
      {*}[list :foo 1 2 3 4 5 6];
    }
    :object method expand-nonempty-list-2 {} {
      : {*}[list foo 1 2 3 4 5 6];
    }
    :object method expand-self-call-1 {} {
      {*}[list :];
    }
    :object method expand-self-call-2 {} {
      : {*}[list];
    }

    ## (Non-)expansion & unknown
    :object method expand-unknown-1 {} {
      :{*}[list foo 1 2 3 4 5 6]; # no expansion, yielding invalid list as method name
    }
    :object method expand-unknown-2 {} {
      :{*}[list]; # no expansion, yielding invalid list as method name
    }
    :object method expand-unknown-3 {} {
      :{*}; # no expansion, yielding invalid list as method name
    }
    :object method expand-unknown-4 {} {
      :{*}{}; # no expansion, yielding invalid list as method name
    }
    :object method expand-unknown-5 {} {
      :{\}}; # yet another invalid list (no expansion op)
    }
  }]

  ? [list $o expand-nonempty-list-1] "foo-ok"
  ? [list $o expand-nonempty-list-2] "foo-ok"
  ? [list $o expand-self-call-1] $o
  ? [list $o expand-self-call-2] $o

  #
  # Keep unknown messages compatible with Tcl's 'invalid command'
  # messages in the cases below, e.g.:
  #
  # proc =foo {args} {;}   ;# ={*}[list foo 1 2 3 4 5 6]
  #
  ? [list $o expand-unknown-1] "$o: unable to dispatch method '{*}foo 1 2 3 4 5 6'"
  ? [list $o expand-unknown-2] "$o: unable to dispatch method '{*}'"
  ? [list $o expand-unknown-3] "$o: unable to dispatch method '{*}'"
  ? [list $o expand-unknown-4] "$o: unable to dispatch method '{*}{}'"
  ? [list $o expand-unknown-5] "$o: unable to dispatch method '{\}}'"
}

nx::test case mixinguards {
  # define a Class C and mixin class M
  nx::Class create C
  nx::Class create M

  # register the mixin on C as an object mixin and define a mixinguard

  #C mixins set M
  #C mixins guard M {1 == 1}
  #? {C info mixin guard M} "1 == 1"
  #C mixins guard M {}
  #? {C info mixin guard M} ""

  #
  # set guard via converter
  #
  C mixins set {{M -guard {1 == 1}}}
  ? {C info mixins -guard} "{::M -guard {1 == 1}}"
  ? {C mixins get} "{::M -guard {1 == 1}}"

  #
  # set/clear guard via relation slot
  #
  C mixins set M
  ? {C mixins guard M {1 == 1}} ""
  ? {C mixins get} "{::M -guard {1 == 1}}"
  ? {C info mixins -guard} "{::M -guard {1 == 1}}"
  ? {C info mixins} "::M"

  ? {C mixins guard M ""} ""
  ? {C mixins get} "::M"
  ? {C info mixins -guard} "::M"

  #
  # now the same as object mixin and object mixin guard
  #
  # set guard via converter
  #
  C object mixins set {{M -guard {1 == 1}}}
  ? {C info object mixins -guard} "{::M -guard {1 == 1}}"
  ? {C info object mixins} "::M"
  ? {C object mixins get} "{::M -guard {1 == 1}}"

  #
  # set/clear guard via relation slot
  #
  C object mixins set M
  C object mixins guard M {1 == 1}
  ? {C object mixins get} "{::M -guard {1 == 1}}"
  ? {C info object mixins -guard} "{::M -guard {1 == 1}}"
  ? {C info object mixins} "::M"

  ? {C object mixins guard M {}} ""
  ? {C info object mixins -guard} "::M"
}

nx::test case mixin-via-objectparam {
  # add an object and class mixin via object-parameter and via slots
  foreach c {M1 M2 M3 M4 M5} {nx::Class create $c}

  nx::Class create C -mixin M1 -object-mixins M2 {
    :mixins add M3
    :object mixins add M4
  }

  ? {lsort [C info object mixins]} "::M2 ::M4"
  ? {lsort [C info mixins]} "::M1 ::M3"

  ? {lsort [C object mixins get]} "::M2 ::M4"
  ? {lsort [C mixins get]} "::M1 ::M3"

  ? {lsort [C object mixins]} {wrong # args: use "::C object mixins add|classes|clear|delete|get|guard|set"}
  ? {lsort [C mixins]} {wrong # args: use "::C mixins add|classes|clear|delete|get|guard|set"}
  ? {lsort [C mixins x]} {submethod x undefined for mixins: use "::C mixins add|classes|clear|delete|get|guard|set"}

  ? {catch {C mixin M5} errorMsg} 1
  ? {lsort [C info mixins]} "::M1 ::M3"

  ? {catch {C object mixin M5} errorMsg} 1
  ? {lsort [C info object mixins]} "::M2 ::M4"

  ? {C mixins set M5} ::M5
  ? {lsort [C info mixins]} "::M5"

  ? {C object mixins set M5} "::M5"
  ? {lsort [C info object mixins]} "::M5"

  ? {C configure -mixin M1} ""
  ? {C cget -mixin} "::M1"

  ? {C configure -object-mixins M2} ""
  ? {C cget -object-mixin} "::M2"
}

# testing next via nonpos-args
nx::test case next-from-nonpos-args {

  nx::Object create o {
    :object method bar {-y:required -x:required} {
      #puts stderr "+++ o x=$x, y=$y [current args] ... next [current nextmethod]"
      return [list x $x y $y [current args]]
    }
  }
  nx::Class create M {
    :method bar {-x:required -y:required} {
      #puts stderr "+++ M x=$x, y=$y [current args] ... next [current nextmethod]"
      return [list x $x y $y [current args] -- {*}[next]]
    }
  }

  o object mixins set M
  ? {o bar -x 13 -y 14} "x 13 y 14 {-x 13 -y 14} -- x 13 y 14 {-x 13 -y 14}"
  ? {o bar -y 14 -x 13} "x 13 y 14 {-y 14 -x 13} -- x 13 y 14 {-y 14 -x 13}"
}

#
# test method property with protected/public
#
nx::test case property-method {

  nx::Class create C {
    set x [:property -accessor public a]

    ? [list set _ $x] "::nsf::classes::C::a"

    # property with default
    :property {b b1}
    :property -accessor public {c c1}
    :property -accessor protected {d d1}

    set X [:object property -accessor public A]
    ? [list set _ $X] "::C::A"

    # object property with default
    :object property {B B2}
    :object property -accessor public {C C2}
    :object property -accessor protected {D D2}
  }

  C create c1 -a 1
  ? {c1 a get} 1
  ? {c1 cget -b} b1
  ? {c1 cget -c} c1
  ? {c1 d} "::c1: unable to dispatch method 'd'"

  ? {C A set 2} 2
  ? {C A get} 2
  ? {C B} {method 'B' unknown for ::C; in order to create an instance of class ::C, consider using '::C create B ?...?'}
  #? {C B} B2
  ? {C C get} C2
  ? {C D} {method 'D' unknown for ::C; in order to create an instance of class ::C, consider using '::C create D ?...?'}

  nx::Object create o {
    set x [:object property -accessor public a]
    ? [list set _ $x] "::o::a"

    # property with default
    :object property {b b1}
    :object property -accessor public {c c1}
    :object property -accessor protected {d d1}
  }
  ? {o a set 2} 2
  ? {o b} {::o: unable to dispatch method 'b'}
  #? {o b} b1
  ? {o c get} c1
  ? {o d} "::o: unable to dispatch method 'd'"
}

nx::test case subcmd {

  nx::Class create Foo {

    :method "Info filter guard" {filter} {return [current object]-[current method]}
    :method "Info filter methods" {-guards pattern:optional} {return [current object]-[current method]}
    :method "Info args" {} {return [current object]-[current method]}
    :method "Info foo" {} {return [current object]-[current method]}

    :object method "INFO filter guard" {a b} {return [current object]-[current method]}
    :object method "INFO filter methods" {-guards pattern:optional} {return [current object]-[current method]}
  }

  ? {Foo INFO filter guard 1 2} ::Foo-guard
  ? {Foo INFO filter methods a*} ::Foo-methods

  Foo create f1 {
    :object method "list length" {} {return [current object]-[current method]}
    :object method "list reverse" {} {return [current object]-[current method]}
  }

  ? {f1 Info filter guard x} "::f1-guard"
  ? {f1 Info filter methods} "::f1-methods"
  ? {f1 Info args} "::f1-args"
  ? {f1 Info foo} "::f1-foo"

  ? {f1 list length} "::f1-length"
  ? {f1 list reverse} "::f1-reverse"
}

package req nx::serializer
nx::test case class-object-property {
  nx::Class create C {
    :object property -accessor public x
    :property -accessor public a:int
    :create c1
  }
  ? {C x set 1} 1
  ? {C x get} 1
  ? {lsort [C info methods]} "a"
  ? {lsort [C info object methods]} "x"
  ? {c1 a set b} {expected integer but got "b" for parameter "value"}

  set s(C) [C serialize]
  set s(c1) [c1 serialize]

  # Destroy object and class
  c1 destroy
  C destroy

  ? {nsf::object::exists c1} 0
  ? {nsf::object::exists C} 0

  # create it from the serialized code
  eval $s(C)
  ? {nsf::object::exists C} 1
  eval $s(c1)
  ? {nsf::object::exists c1} 1

  # tests should work as again
  ? {C x get} 1
  ? {lsort [C info methods]} "a"
  ? {lsort [C info object methods]} "x"
  ? {c1 a set b} {expected integer but got "b" for parameter "value"}
}

#
# Test method deletion
#
nx::test configure -count 1

nx::test case methoddelete {
  nx::Class create C {
    :public method foo {x} {return $x}
    :public object method bar {x} {return $x}
    :create c1
  }

  ? {::nsf::method::delete C x} "::C: instance method 'x' does not exist"
  ? {::nsf::method::delete C -per-object x} "::C: object specific method 'x' does not exist"
  ? {::nsf::method::delete C foo} ""
  ? {::nsf::method::delete C foo} "::C: instance method 'foo' does not exist"
  ? {::nsf::method::delete C bar} "::C: instance method 'bar' does not exist"
  ? {::nsf::method::delete C -per-object bar} ""
  ? {::nsf::method::delete C -per-object bar} "::C: object specific method 'bar' does not exist"
}

#
# Test error message of method modifier
#
nx::test configure -count 1

nx::test case errormessage {
  nx::Class create C
  ? {C public method foo {x} {return $x}} "::nsf::classes::C::foo"
  ? {C public Object method bar {x} {return $x}} \
      "'Object' is not a method defining method"
  ? {C protected Object method bar {x} {return $x}} \
      "'Object' is not a method defining method"
  ? {C Object method bar {x} {return $x}} \
      {method 'Object' unknown for ::C; in order to create an instance of class ::C, consider using '::C create Object ?...?'}
  #? {C public object Object method bar {x} {return $x}} "'Object' not allowed to be modified by 'class'"
  #? {C public object Object method bar {x} {return $x}} \
      {'Object' is not a method defining method}
}

#
# test dispatch without object
#
nx::test case dispatch-without-object {

  nx::Object create o {
    # property defines a setter, we need a current object
    :object property -accessor public {a v}
    # the other methods don't require them as strong
    :object forward b ::o2 bar
    :object method foo {} {return [nx::self]}
    :object alias x ::o::foo
  }
  nx::Object create o2 {
    :public object method bar {} {return [nx::self]}
  }

  # dispatch methods without current object
  ? ::o::a {wrong # args: use "::o ::o::a add|delete|exists|get|set|unset"}
  ? ::o::b "::o2"
  ? ::o::foo "no current object; command called outside the context of a Next Scripting method"
  ? ::o::x "no current object; x called outside the context of a Next Scripting method"
  # make a regular call, provide tcd->object with a value
  ? {::o x} "::o"
  # check, if missing object is still detected
  ? ::o::x "no current object; x called outside the context of a Next Scripting method"
  ? nx::self "no current object; command called outside the context of a Next Scripting method"
}


#
# Test the current namespaces and resolution for
# a) top-level methods
# b) ensemble methods on level 1
# c) ensemble methods on level 2
#
nx::test case scopes {
  nx::Object create o1 {
    :public object method foo {} {return [namespace current]-[namespace which info]}
    :public object method "info foo" {} {return [namespace current]-[namespace which info]}
    :public object method "info bar foo" {} {return [namespace current]-[namespace which info]}
  }

  ? {o1 foo} "::-::info"
  ? {o1 info foo} "::-::info"
  ? {o1 info bar foo} "::-::info"

  nx::Class create C {
    :public method foo {} {return [namespace current]-[namespace which info]}
    :public method "info foo" {} {return [namespace current]-[namespace which info]}
    :public method "info bar foo" {} {return [namespace current]-[namespace which info]}
    :create c1
  }

  ? {c1 foo} "::-::info"
  ? {c1 info foo} "::-::info"
  ? {c1 info bar foo} "::-::info"
}

#
# Test the current namespaces and resolution for methods
# registered on an object in a certain namespace
# a) top-level methods
# b) ensemble methods on level 1
# c) ensemble methods on level 2
#
nx::test case namespaced-scopes {

  namespace eval ::ns {
    nx::Object create o1 {
      :public object method foo {} {return [namespace current]-[namespace which info]}
      :public object method "info foo" {} {return [namespace current]-[namespace which info]}
      :public object method "info bar foo" {} {return [namespace current]-[namespace which info]}
    }
    nx::Class create C {
      :public method foo {} {return [namespace current]-[namespace which info]}
      :public method "info foo" {} {return [namespace current]-[namespace which info]}
      :public method "info bar foo" {} {return [namespace current]-[namespace which info]}
      :create c1
    }
  }

  ? {ns::o1 foo} "::ns-::info"
  ? {ns::o1 info foo} "::ns-::info"
  ? {ns::o1 info bar foo} "::ns-::info"

  ? {ns::c1 foo} "::ns-::info"
  ? {ns::c1 info foo} "::ns-::info"
  ? {ns::c1 info bar foo} "::ns-::info"
}


#
# Test the current namespaces and resolution for methods
# registered on a sub object
# a) top-level methods
# b) ensemble methods on level 1
# c) ensemble methods on level 2
#
nx::test case nested-scopes {
  nx::Object create o
  nx::Object create o::o1 {
    :public object method foo {} {return [namespace current]-[namespace which info]}
    :public object method "info foo" {} {return [namespace current]-[namespace which info]}
    :public object method "info bar foo" {} {return [namespace current]-[namespace which info]}
  }

  ? {o::o1 foo} "::o-::info"
  ? {o::o1 info foo} "::o-::info"
  ? {o::o1 info bar foo} "::o-::info"

  nx::Class create o::C {
    :public method foo {} {return [namespace current]-[namespace which info]}
    :public method "info foo" {} {return [namespace current]-[namespace which info]}
    :public method "info bar foo" {} {return [namespace current]-[namespace which info]}
    :create c1
  }

  ? {c1 foo} "::o-::info"
  ? {c1 info foo} "::o-::info"
  ? {c1 info bar foo} "::o-::info"
}

#
# Test deletion of object-specific methods/attributes via "delete
# method" and "delete property"
#
# a) test attributes
# b) test simple methods
# c) test ensemble methods
#
nx::test case delete-per-object {
  nx::Object create o1 {
    :object property -accessor public a1
    :object property -accessor public a2
    :public object method foo {} {return [namespace current]-[namespace which info]}
    :public object method "info foo" {} {return [namespace current]-[namespace which info]}
    :public object method "info bar foo" {} {return [namespace current]-[namespace which info]}
  }

  ? {o1 info object methods -path} "{info foo} {info bar foo} foo a1 a2"
  ? {o1 info children} "::o1::info ::o1::per-object-slot"

  ? {o1 delete object method bar} "::o1: object specific method 'bar' does not exist"
  # For a1, we have a method and a property. We can delete the
  # method without the slot.
  ? {o1 delete object method a1} ""
  # After the deletion of the accessor, the slot exists still
  ? {o1::per-object-slot info children} "::o1::per-object-slot::a1 ::o1::per-object-slot::a2"
  # If we perform now a "delete object property a1", the slot will be removed.
  ? {o1 delete object property a1} ""
  ? {o1::per-object-slot info children} "::o1::per-object-slot::a2"

  # try to delete the property again:
  ? {o1 delete object property a1} "::o1: cannot delete object-specific property 'a1'"

  ? {o1 info object methods -path} "{info foo} {info bar foo} foo a2"
  ? {o1 delete object property a2} ""
  ? {o1 info object methods -path} "{info foo} {info bar foo} foo"

  ? {o1 delete object method foo} ""
  ? {o1 info object methods -path} "{info foo} {info bar foo}"

  ? {o1 delete object method "info foo"} ""
  ? {o1 info object methods -path} "{info bar foo}"

  ? {o1 delete object method "info bar foo"} ""
  ? {o1 info object methods -path} ""
}

#
# Test deletion of per-object methods/attributes defined on classes
# via the delete method
# a) test attributes
# b) test simple methods
# c) test ensemble methods
#
nx::test case delete-per-object-on-class {
  nx::Class create C {
    :object property -accessor public a1
    :public object method foo {} {return [namespace current]-[namespace which info]}
    :public object method "info foo" {} {return [namespace current]-[namespace which info]}
    :public object method "info bar foo" {} {return [namespace current]-[namespace which info]}
    :property -accessor public a2
  }

  ? {C info object methods -path} "{info foo} {info bar foo} foo a1"
  ? {C info children} "::C::info ::C::slot ::C::per-object-slot"

  ? {C delete object method bar} "::C: object specific method 'bar' does not exist"

  ? {C delete object property a1} ""
  ? {C info object methods -path} "{info foo} {info bar foo} foo"
  ? {C delete object property a1} "::C: cannot delete object-specific property 'a1'"

  ? {C delete object method foo} ""
  ? {C info object methods -path} "{info foo} {info bar foo}"

  ? {C delete object method "info foo"} ""
  ? {C info object methods -path} "{info bar foo}"

  ? {C delete object method "info bar foo"} ""
  ? {C info object methods -path} ""

  ? {C info methods} "a2"
  ? {C info slots} "::C::slot::a2"
}


#
# Test deletion of methods/attributes defined on classes via the
# delete method
# a) test attributes
# b) test simple methods
# c) test ensemble methods
#
nx::test case delete-class-level-method {
  nx::Class create C {
    :property -accessor public a1
    :public method foo {} {return [namespace current]-[namespace which info]}
    :public method "info foo" {} {return [namespace current]-[namespace which info]}
    :public method "info bar foo" {} {return [namespace current]-[namespace which info]}
  }

  ? {C info methods -path} "{info foo} {info bar foo} foo a1"
  ? {C info children} "::C::slot"

  ? {C delete method bar} "::C: instance method 'bar' does not exist"

  ? {C delete property a1} ""
  ? {C info methods -path} "{info foo} {info bar foo} foo"

  ? {C delete property a1} "::C: cannot delete property 'a1'"

  ? {C delete method foo} ""
  ? {C info methods -path} "{info foo} {info bar foo}"

  ? {C delete method "info foo"} ""
  ? {C info methods -path} "{info bar foo}"

  ? {C delete method "info bar foo"} ""
  ? {C info methods -path} ""
}

nx::test case default-unknown-handler {

  nx::Object create o
  ? {o sakania} "::o: unable to dispatch method 'sakania'"
  ? {o yore dub} "::o: unable to dispatch method 'yore'"
  ? {o "yore dub"} "::o: unable to dispatch method 'yore dub'"

}

#
# simple unknown tests;
# ensemble unknown tests are in submethods.test
#
nx::test case test-simple-unknown {

  #
  # calling unknown with a plain "method" without arguments
  #
  ::nx::Class create A {
    :object method unknown args {? [list set _ $args] "hello"}
  }
  A hello

  #
  # calling unknown with a plain "method" with arguments
  #
  ::nx::Class create B {
    :object method unknown args {? [list set _ $args] "hello world"}
  }
  B hello world

  #
  # calling unknown with a method with spaces
  #
  ::nx::Class create C {
    :object method unknown args {? [list set _ $args] "{hello world}"}
  }
  C {hello world}
}


#
# simple speed tests
# ensemble unknown tests are in submethods.test
#
nx::test configure -count 1000
nx::test case speed-dispatch {

  #
  # define various forms of simple dispatches
  #
  ::nx::Object create o {
    :public object method foo {} {return ::o}
    :public object method bar00 {} {self}
    :public object method bar01 {} {:}
    :public object method bar02 {} {[self]}
    :public object method bar03 {} {[:]}
    :public object method bar04 {} {:foo}
    :public object method bar05 {} {: foo}
    #:public object method bar06 {} {my foo}
    :public object method bar07 {} {[self] foo}
    :public object method bar08 {} {: -system info object methods foo}
    #:public object method bar09 {} {my -system info object methods foo}
  }

  ? {o foo} ::o
  ? {o bar00} ::o {self}
  ? {o bar01} ::o {:}
  ? {o bar02} ::o {[self]}
  ? {o bar03} ::o {[:]}
  ? {o bar04} ::o ":foo"
  ? {o bar05} ::o ": foo"
  #? {o bar06} ::o "my foo"
  ? {o bar07} ::o "self foo"
  ? {o bar08} foo ": -system info"
  #? {o bar09} foo "my -system info"
}

nx::test configure -count 1
nx::test case fq-obj-dispatch {
  #
  # Capture the (current) dispatcher rules for fully-qualified
  # selectors which resolve to existing objects.
  #
  nx::Class create C {
    set :unknown 0
    :public object method unknown {m args} {
      incr :unknown
      return unknown-$m
    }
  }

  nx::Class create D {
    set :defaultcalled 0
    :public method defaultmethod args {
      [current class] eval [list incr :defaultcalled]
    }
    :create ::d
  }

  ? {::D eval {set :defaultcalled}} 0
  ? {::d} 1
  ? {C eval {set :unknown}} 0
  ? {C ::d} "unknown-::d"
  ? {C eval {set :unknown}} 1
  ? {::d} 2; # should not be 3!
  ? {C d} "unknown-d"
  ? {C eval {set :unknown}} 2
  ? {::d} 3

  #
  # nested-object selector, *not* pre-existing
  #
  ? {::nsf::object::exists ::d::c} 0
  ? {C ::d::c} "unknown-::d::c"
  ? {C eval {set :unknown}} 3
  ? {::nsf::object::exists ::d::c} 0

  #
  # nested-object selector, pre-existing
  #
  ? {::nsf::object::exists ::d::dd} 0
  D create ::d::dd
  ? {::nsf::object::exists ::d::dd} 1
  ? {::D eval {set :defaultcalled}} 3
  ? {::d::dd} 4
  ? {C eval {set :unknown}} 3
  ? {C ::d::dd} "unknown-::d::dd"
  ? {C eval {set :unknown}} 4
  ? {C d::dd} "unknown-d::dd"
  ? {C eval {set :unknown}} 5
  ? {::D eval {set :defaultcalled}} 4

  #
  # namespaced selector, *not* pre-existing
  #
  namespace eval ::ns1 {}
  ? {::nsf::object::exists ::ns1::c} 0
  ? {C ::ns1::c} "unknown-::ns1::c"
  ? {C eval {set :unknown}} 6
  ? {::nsf::object::exists ::ns1::c} 0

  #
  # namespaced selector, pre-existing
  #
  ? {::nsf::object::exists ::ns1::d} 0
  D create ::ns1::d
  ? {::nsf::object::exists ::ns1::d} 1
  ? {::D eval {set :defaultcalled}} 4
  ? {::ns1::d} 5
  ? {C eval {set :unknown}} 6
  ? {C ::ns1::d} "unknown-::ns1::d"
  ? {C eval {set :unknown}} 7
  ? {C ns1::d} "unknown-ns1::d"
  ? {C eval {set :unknown}} 8
  ? {::D eval {set :defaultcalled}} 5

  #
  # Is XOTcl's creation short-cut operative for nested-object
  # selectors, compliant with the XOTcl-specific unknown-(re)create
  # protocol?
  #
  package req XOTcl 2.0

  ? {::nsf::object::exists ::X} 0

  xotcl::Class ::X -instproc p1 {v} {
    [self class] incr [self proc] $v
  } -proc unknown args {
    my incr [self proc]
    next
  } -set unknown 0 -proc recreate args {
    my incr [self proc]
    next
  } -set recreate 0

  ? {::nsf::object::exists ::X} 1
  ? {::X exists p1} 0
  ? {::X set unknown} 0

  ? {xotcl::Object ::p} ::p
  ? {::nsf::object::exists ::p::child} 0
  ? {::X ::p::child -p1 2} ::p::child

  ? {::nsf::object::exists ::p::child} 1
  ? {::X set p1} 2
  ? {::X set unknown} 1
  ? {::X set recreate} 0

  ? {::X ::p::child -p1 1} ::p::child
  ? {::X set p1} 3
  ? {::X set unknown} 2
  ? {::X set recreate} 1
}


#
# object copy
#
nx::test case object-copy {
  nsf::method::provide set      {::nsf::method::alias  set -frame object ::set}

  nx::Object create o {
    :public object method foo {} {return foo}
    :public object method "a b" {} {return "a b"}
    :public object method "a c" {} {return "a c"}
    :protected object method bar {} {return bar}
    :private object method baz {} {return baz}
    :public object forward fwd %self xxx
    :require public object method set
  }
  ? {lsort [::o info object methods -path]} "{a b} {a c} foo fwd set"
  ? {o a b} "a b"
  ? {o a c} "a c"
  ? {o set x 1} 1
  ? {o eval {info exists :x}} 1

  ? {o copy p} ::p
  ? {lsort [::p info object methods -path]} "{a b} {a c} foo fwd set"

  ? {p a b} "a b"
  ? {p a c} "a c"

  #package require nx::serializer
  #puts stderr [o serialize]
  #puts stderr [p serialize]
  ? {p eval {info exists :x}} 1
  ? {p set x} 1
}

#
# class copy
#
nx::test case class-copy {
  nsf::method::provide set      {::nsf::method::alias  set -frame object ::set}

  nx::Class create C {
    :public method foo {} {return foo}
    :public method "a b" {} {return "a b"}
    :public method "a c" {} {return "a c"}
    :protected method bar {} {return bar}
    :private method baz {} {return baz}
    :public forward fwd %self xxx
    :require public method set
    :create c1
  }

  ? {lsort [::C info methods -path]} "{a b} {a c} foo fwd set"
  ? {::c1 a b} "a b"
  ? {::c1 a c} "a c"
  ? {::c1 set x 1} 1

  ? {::C copy ::D} ::D

  ? {lsort [::D info methods -path]} "{a b} {a c} foo fwd set"

  #package require nx::serializer
  #puts stderr [::C serialize]
  #puts stderr [::D serialize]

  ::D create d1

  ? {::d1 a b} "a b"
  ? {::d1 a c} "a c"

  #puts stderr [::c1 serialize]
  #puts stderr [::d1 serialize]
  ? {::d1 set x 2} 2
}


#
# class copy with class object methods
#
nx::test case object+class-copy {
  nsf::method::provide set      {::nsf::method::alias  set -frame object ::set}
  nsf::method::provide exists   {::nsf::method::alias  exists ::nsf::methods::object::exists}

  nx::Class create C {
    :public method foo {} {return foo}
    :public method "a b" {} {return "a b"}
    :public method "a c" {} {return "a c"}
    :protected method bar {} {return bar}
    :private method baz {} {return baz}
    :public forward fwd %self xxx
    :require public method set

    :public object method ofoo {} {return foo}
    :public object method "oa b" {} {return "oa b"}
    :public object method "oa c" {} {return "oa c"}
    :protected object method obar {} {return bar}
    :private object method obaz {} {return baz}
    :public object forward ofwd %self xxx
    #TODO: the following line leads to a crash
    #:require public object method exists
    :require public object method set
    :create c1
  }

  ? {lsort [::C info methods -path]} "{a b} {a c} foo fwd set"
  ? {lsort [::C info object methods -path]} "{oa b} {oa c} ofoo ofwd set"

  ? {::c1 a b} "a b"
  ? {::c1 a c} "a c"
  ? {::c1 set x 1} 1

  ? {::C oa b} "oa b"
  ? {::C oa c} "oa c"
  ? {::C set y 100} "100"

  ? {::C copy ::D} ::D

  ? {lsort [::D info methods -path]} "{a b} {a c} foo fwd set"
  #? {lsort [::D info object methods -path]} "{oa b} {oa c} ofoo ofwd set"

  ? {::D oa b} "oa b"
  ? {::D oa c} "oa c"
  ? {::D set y} "100"

  ::D create d1

  ? {::d1 a b} "a b"
  ? {::d1 a c} "a c"

  ? {::d1 set x 2} 2
}



nx::test configure -count 10
#
# class copy with class object methods
#
nx::test case object+class+property-copy {
  nsf::method::provide set      {::nsf::method::alias  set -frame object ::set}
  nsf::method::provide exists   {::nsf::method::alias  exists ::nsf::methods::object::exists}

  package require nx::serializer

  nx::Class create C {
    :public method foo {} {return foo}
    :public method "a b" {} {return "a b"}
    :public method "a c" {} {return "a c"}
    :protected method bar {} {return bar}
    :private method baz {} {return baz}
    :public forward fwd %self xxx
    :require public method set
    :property p
    :variable v 0

    :public object method ofoo {} {return foo}
    :public object method "oa b" {} {return "oa b"}
    :public object method "oa c" {} {return "oa c"}
    :protected object method obar {} {return bar}
    :private object method obaz {} {return baz}
    :public object forward ofwd %self xxx
    :require public object method exists
    :require public object method set

    :object property op
    :object variable ov 0

    :create c1
  }

  ? {lsort [::C info methods -path]} "{a b} {a c} foo fwd set"
  ? {lsort [::C info object methods -path]} "exists {oa b} {oa c} ofoo ofwd set"

  ? {::c1 a b} "a b"
  ? {::c1 a c} "a c"
  ? {::c1 set x 1} 1

  ? {::C oa b} "oa b"
  ? {::C oa c} "oa c"
  ? {::C set y 100} "100"

  ::nx::Object public method COPY {target} {
    set code [::Serializer deepSerialize -objmap [list [self] $target] [self]]
    #puts CODE=$code
    eval $code
    return $target
  }

  ? {::C copy ::D} ::D
  ? {::C COPY ::E} ::E

  ? {lsort [::D info methods -path]} "{a b} {a c} foo fwd set"
  ? {lsort [::D info object methods -path]} "exists {oa b} {oa c} ofoo ofwd set"

  ? {::D oa b} "oa b"
  ? {::D oa c} "oa c"
  ? {::D set y} "100"

  ? {::D create d1} ::d1
  ? {::d1 a b} "a b"
  ? {::d1 a c} "a c"
  ? {::d1 set x 2} 2

  ? {::E oa b} "oa b"
  ? {::E oa c} "oa c"
  ? {::E set y} "100"

  ? {::E create e1} ::e1
  ? {::e1 a b} "a b"
  ? {::e1 a c} "a c"
  ? {::e1 set x 2} 2

}

#
# Check, if the execution namespace after the builtin or
# serializer-based copy is correct.
#
nx::test case nx-copy-COPY-namespace {
  nx::Object create o1
  nx::Object create o1::o {
    :public object method foo {} {namespace current}
  }
  nx::Object create o2

  ::nx::Object public method COPY {target} {
    set code [::Serializer deepSerialize -objmap [list [self] $target] [self]]
    #puts CODE=$code
    eval $code
    return [$target eval self]
  }

  ? {o1::o foo} ::o1

  ? {o1::o copy o2::o} ::o2::o
  ? {o1::o COPY o2::O} ::o2::O

  ? {o2::o foo} ::o2
  ? {o2::O foo} ::o2
}

nx::test case xotcl-COPY {
  package req XOTcl
  xotcl::Class create C
  C proc foo {} {return foo}
  C instproc bar {} {return bar}
  C set x 1

  ::xotcl::Object instproc COPY {target} {
    set code [::Serializer deepSerialize -objmap [list [self] $target] [self]]
    #puts CODE=$code
    eval $code
    return $target
  }

  ? {C set x} 1
  C copy D
  C COPY E

  ? {D set x} 1
  ? {D foo} foo
  ? {D create d1} ::d1
  ? {d1 bar} bar

  ? {E set x} 1
  ? {E foo} foo
  ? {E create e1} ::e1
  ? {e1 bar} bar
}

nx::test case xotcl-assertion-swallows-result {

  package req XOTcl

  xotcl::Class create Edge
  Edge instproc foo {} {
    my set xxx
  }

  Edge instproc bar {} {
    my set xxx
  } {} {{1 == 0}}

  Edge create e1

  # base case
  ? {catch {e1 foo} errMsg} 1
  ? {string match {can't read "xxx":*} $errMsg} 1

  ? {catch {e1 bar} errMsg} 1
  ? {string match {can't read "xxx":*} $errMsg} 1


  # turn on assertion checking
  nsf::method::assertion e1 check all

  # still report error when invariant would not return error
  ? {catch {e1 foo} errMsg} 1
  ? {string match {can't read "xxx":*} $errMsg} 1

  # still report error when postcondition would return an error
  ? {catch {e1 bar} errMsg} 1
  ? {string match {can't read "xxx":*} $errMsg} 1
}


nx::test case uplevel+interceptor-transparency {
  #
  # A real-world case from OpenACS + from the database abstraction
  # layer. Since profiling is realized via mixin, and the db interface
  # requires heavy upleveling for SQL bind variables, we have complex
  # interaction between upleveling and interceptor transparency. In
  # earlier versions, the Profile mixin towards the end of this test
  # case lead to a problem with the variable scope (the interceptor
  # transparency was violated).
  #
  nx::Object create ns_cache {
    :public object method eval {script} {
      set rc [catch {:uplevel $script} result]
      return -code $rc $result
    }
  }
  nx::Class create DBI {
    :public method 1row {} { :uplevel {return $x} }
  }
  nx::Class create Profile {
    :public method 1row {} { next }
  }
  DBI create db

  nx::Class create C {
    :public method foo {} {
      set x 1
      return [db 1row]
    }
    :public method bar {} {
      set x 2
      return [ns_cache eval {db 1row}]
    }
    :create c1
  }

  ? {c1 foo} 1
  ? {c1 bar} 2

  db object mixins set Profile
  ? {c1 foo} 1
  ? {c1 bar} 2

}

nx::test case uplevel+tcl-transparency {
  #
  # A real-world case from OpenACS + from the database abstraction
  # layer. Frequently, nsf based methods are called from tcl procs
  # (and tcl-upleveled code). In order to preserve interceptor
  # transparency (i.e. to be able to use a mixin on the tcl-called nsf
  # method), the uplevel method has to behave like tcl-uplevel when the
  # caller is a tcl method.
  #

  nx::Object create ns_cache {
    :public object method eval {script} {
      set rc [catch {:uplevel $script} result]
      return -code $rc $result
    }
    :public object method eval0 {script} {
      set rc [catch {uplevel $script} result]
      return -code $rc $result
    }
  }

  nx::Class create Profile {
    :public method eval  {script} { next }
    :public method eval0 {script} { next }
  }

  proc db {cmd} {
    #nsf::__db_show_stack
    return [uplevel $cmd]
  }

  proc foo {} {
    set x 1
    db {set x}
  }

  proc bar0 {} {
    set x 2
    ns_cache eval0 {db {set x}}
  }

  proc bar {} {
    set x 2
    ns_cache eval {db {set x}}
  }

  # foo is tcl, only
  ? foo 1

  # The "bar" functions use the ns_cache interface, which is
  # nsf-based.  The function "bar0" uses tcl uplevel, which is fine,
  # as long no interceptor is used. The function "bar0" uses the
  # uplevel method, which works also, when e.g. mixins are used on
  # ns_cache.

  ? bar0 2
  ? bar 2

  ns_cache object mixins set Profile

  # the version with tcl-uplevel should fail
  ? bar0 {can't read "x": no such variable}

  # the version with uplevel method should succeed
  ? bar 2
}

nx::test case debug+deprecated {
  #
  # Check setting and introspection of method properties "debug" and
  # "deprecated"
  #
  nx::Class create C {
    :public method foo {} {return 1}
    :public method bar {} {return 1}

    :public object method ofoo {} {return 1}
    :public object method obar {} {return 1}
  }

  ? {nsf::method::property C foo debug} 0
  ? {nsf::method::property C bar deprecated} 0
  ? {nsf::method::property C -per-object ofoo debug} 0
  ? {nsf::method::property C -per-object obar deprecated} 0

  ? {C info method debug foo} 0
  ? {C info method deprecated bar} 0
  ? {C info object method debug ofoo} 0
  ? {C info object method deprecated obar} 0

   C eval {
     :public method -debug foo {} {return 1}
     :public method -deprecated bar {} {return 1}

     :public object method -debug ofoo {} {return 1}
     :public object method -deprecated obar {} {return 1}
  }

  ? {nsf::method::property C foo debug} 1
  ? {nsf::method::property C bar deprecated} 1
  ? {nsf::method::property C -per-object ofoo debug} 1
  ? {nsf::method::property C -per-object obar deprecated} 1

  ? {C info method debug foo} 1
  ? {C info method deprecated bar} 1
  ? {C info object method debug ofoo} 1
  ? {C info object method deprecated obar} 1
}

nx::test case eval-next {
  ? {nx::Object eval {::nsf::next}} ""
  ? {nx::Object eval {::nsf::current nextmethod}} ""
  nx::Object create ::o {
    :public object method foo {} {
      lappend _ [nx::Object eval {::nsf::current method}]
      lappend _ [nx::Object eval {::nsf::current callingmethod}]
      lappend _ [nx::Object eval {::nsf::current callingobject}]
    }
    ? [list set _ [:foo]] "eval foo ::o"
  }
}

#
# Testing the behavior of :upvar (and implicitly of [current
# callinglevel]) in different setups
#
#   Setup 1: plain calls
#   Setup 2: when filters are used
#   Setup 3: when filters + guards are used
#
# Forall setups, we test on the tclsh toplevel and from a proc.
#

nx::test configure -count 1
nx::test case callinglevel-toplevel-setup1

nx::Class create AbstractFile {
  :public method filterCall {args} {
    next
  }
}

nx::Class create FsFile -superclass AbstractFile {
  :public method lstat {path var} {
    #puts stderr lstat-level=[info level]-calling-level-[current callinglevel]
    :upvar $var arrayVar
    file lstat $path arrayVar
  }
}

#
# Setup 1 (without filter)
#

FsFile create f1
f1 lstat / a1
? {expr {[array size a1] > 1}} 1
array unset a1

proc foo {} {
  FsFile create f2
  f2 lstat / a2
  array get a2
}
? {expr {[dict size [foo]] > 1}} 1

#
# Setup 2 (with filter)
#
nx::test case callinglevel-toplevel-setup2

AbstractFile filters add filterCall

f1 lstat / a1
? {expr {[array size a1] > 1}} 1
array unset a1
? {expr {[dict size [foo]] > 1}} 1

#
# Setup 3 (with filter and guard)
#
nx::test case callinglevel-toplevel-setup3

AbstractFile filters guard filterCall { [current calledproc] eq "lstat" }

f1 lstat / a1
? {expr {[array size a1] > 1}} 1
array unset a1
? {expr {[dict size [foo]] > 1}} 1

AbstractFile filters delete filterCall

nx::test case callinglevels {

  nx::Object create objekt
  objekt public object method foo {} {
    current callinglevel
  }

  ? {uplevel #0 {objekt foo}} "#0"
  ? {uplevel #0 {
    namespace eval ::ns1 {
      namespace eval ns2 {
        objekt foo
      }
    }
  }} "#2"
  namespace delete ::ns1

  ? {uplevel #0 {apply {{} {objekt foo}}}} "#1"
  ? {uplevel #0 { apply {{} {
    namespace eval ::ns1 {
      namespace eval ns2 {
        objekt foo
      }
    }
  }}}} "#1"
  namespace delete ::ns1

  objekt public object method intercept args {
    list [current method] {*}[next]
  }
  objekt object filters set intercept

  ? {uplevel #0 {objekt foo}} "intercept #0"
  ? {uplevel #0 {
    namespace eval ::ns1 {
      namespace eval ns2 {
        objekt foo
      }
    }
  }} "intercept #2"
  namespace delete ::ns1

  ? {uplevel #0 {apply {{} {objekt foo}}}} "intercept #1"
  ? {uplevel #0 { apply {{} {
    namespace eval ::ns1 {
      namespace eval ns2 {
        objekt foo
      }
    }
  }}}} "intercept #1"
  namespace delete ::ns1

  objekt object mixins add [nx::Class new {
    :public method foo {args} {
      list [current method] {*}[next]
    }
  }]

  ? {uplevel #0 {objekt foo}} "intercept foo #0"
  ? {uplevel #0 {
    namespace eval ::ns1 {
      namespace eval ns2 {
        objekt foo
      }
    }
  }} "intercept foo #2"
  namespace delete ::ns1

  ? {uplevel #0 {apply {{} {objekt foo}}}} "intercept foo #1"
  ? {uplevel #0 { apply {{} {
    namespace eval ::ns1 {
      namespace eval ns2 {
        objekt foo
      }
    }
  }}}} "intercept foo #1"
  namespace delete ::ns1

}

nx::test case uplevel {
  nx::Object create objekt
  objekt public object method foo {} {
    :uplevel {return -level 0 #[info level]}
  }
  ? {uplevel #0 {objekt foo}} "#0"

  ? {uplevel #0 {
    namespace eval ::ns1 {
      namespace eval ns2 {
        objekt foo
      }
    }
  }} "#2"
  namespace delete ::ns1

  ? {uplevel #0 {apply {{} {objekt foo}}}} "#1"
  ? {uplevel #0 { apply {{} {
    namespace eval ::ns1 {
      namespace eval ns2 {
        objekt foo
      }
    }
  }}}} "#1"
  namespace delete ::ns1

  objekt public object method intercept args {
    if {[current calledmethod] eq "foo"} {
      list [current method] {*}[next]
    } else {
      next
    }
  }
  objekt object filters set intercept

  ? {uplevel #0 {objekt foo}} "intercept #0"
  ? {uplevel #0 {
    namespace eval ::ns1 {
      namespace eval ns2 {
        objekt foo
      }
    }
  }} "intercept #2"
  namespace delete ::ns1

  ? {uplevel #0 {apply {{} {objekt foo}}}} "intercept #1"
  ? {uplevel #0 { apply {{} {
    namespace eval ::ns1 {
      namespace eval ns2 {
        objekt foo
      }
    }
  }}}} "intercept #1"
  namespace delete ::ns1

  objekt object mixins add [nx::Class new {
    :public method foo {args} {
      list [current method] {*}[next]
    }
  }]

  ? {uplevel #0 {objekt foo}} "intercept foo #0"
  ? {uplevel #0 {
    namespace eval ::ns1 {
      namespace eval ns2 {
        objekt foo
      }
    }
  }} "intercept foo #2"
  namespace delete ::ns1

  ? {uplevel #0 {apply {{} {objekt foo}}}} "intercept foo #1"
  ? {uplevel #0 { apply {{} {
    namespace eval ::ns1 {
      namespace eval ns2 {
        objekt foo
      }
    }
  }}}} "intercept foo #1"
  namespace delete ::ns1

  set filters [objekt object filters clear]
  set mixins [objekt object mixins clear]
  unset -nocomplain ::_

  objekt public object method foo {} {
    :uplevel {set FOO 1}
  }

  ? {uplevel #0 {
    lappend _ [info exists FOO];
    objekt foo;
    lappend _ [info exists FOO][unset FOO]}
  } "0 1"

  unset -nocomplain ::_

  ? {uplevel #0 {
    namespace eval ::ns1 {
      namespace eval ns2 {
        lappend _ [info exists FOO];
        objekt foo;
        lappend _ [info exists FOO][unset FOO];
      }
    }
  }} "0 1"
  namespace delete ::ns1

  ? {uplevel #0 {
    namespace eval ::ns1 {
      apply {{} {
        lappend _ [info exists FOO];
        namespace eval ns2 {
          objekt foo;
        }
        lappend _ [info exists FOO][unset FOO];
      }}
    }
  }} "0 1"
  namespace delete ::ns1

  objekt object filters set $filters
  objekt object mixins set $mixins

    ? {uplevel #0 {
    lappend _ [info exists FOO];
    objekt foo;
    lappend _ [info exists FOO][unset FOO]}
  } "0 1"

  unset -nocomplain ::_

  ? {uplevel #0 {
    namespace eval ::ns1 {
      namespace eval ns2 {
        lappend _ [info exists FOO];
        objekt foo;
        lappend _ [info exists FOO][unset FOO];
      }
    }
  }} "0 1"
  namespace delete ::ns1

  ? {uplevel #0 {
    namespace eval ::ns1 {
      apply {{} {
        lappend _ [info exists FOO];
        namespace eval ns2 {
          objekt foo;
        }
        lappend _ [info exists FOO][unset FOO];
      }}
    }
  }} "0 1"
  namespace delete ::ns1

}

nx::test case uplevel-method-signature {

  nx::Object create objekt
  objekt public object method foo {} {
    concat \
        [:uplevel return -level 0 "#\[info level\]"] \
        [uplevel [current callinglevel] return -level 0 "#\[info level\]"]
  }

  ? {uplevel #0 { apply {{} {
    namespace eval ::ns1 {
      namespace eval ns2 {
        objekt foo
      }
    }
  }}}} "#1 #1"

  objekt public object method foo {} {
    :uplevel
  }

  ? {uplevel #0 {objekt foo}} {wrong # args: should be "::objekt uplevel ?level? command ?arg ...?"}

  objekt public object method foo {} {
    :uplevel 1
  }

  ? {uplevel #0 {objekt foo}} {invalid command name "1"}

  objekt public object method foo {} {
    :uplevel #1
  }

  ? {uplevel #0 {objekt foo}} {}

  objekt public object method foo {} {
    :uplevel [list #1]
  }

  ? {uplevel #0 {objekt foo}} {invalid command name "#1"}


  objekt public object method foo {} {
    :uplevel 1 {return -level 0 #[info level]}
  }

  ? {uplevel #0 {objekt foo}} "#0"

  objekt public object method foo {} {
    :uplevel 1 return -level 0 "#\[info level\]"
  }

  ? {uplevel #0 {objekt foo}} "#0"

  objekt public object method foo {} {
    :uplevel #0 {return -level 0 #[info level]}
  }

  ? {uplevel #0 {objekt foo}} "#0"

  objekt public object method foo {} {
    :uplevel #0 return -level 0 "#\[info level\]"
  }

  ? {uplevel #0 {objekt foo}} "#0"

  #
  # (1) syntactically invalid level specifiers (no digit, no hash) in
  # the more-arg case resort to interpreting the arg as a command name.
  # (2) syntactically valid level specifiers (digit, hash), but that
  # point to nowhere, are reported as a bad level.
  #
  # Level-syntax validity is a moving target: see TIP 515
  # https://core.tcl-lang.org/tips/doc/trunk/tip/515.md
  #

  #
  # ad (1)
  #
  objekt public object method foo {} {
    :uplevel a return -level 0 "#\[info level\]"
  }

  ? {uplevel #0 {objekt foo}} {invalid command name "a"}

  objekt public object method foo {} {
    :uplevel 1 return -level 0 "#\[info level\]"
  }

  ? {uplevel #0 {objekt foo}} "\#0"

  objekt public object method foo {} {
    :uplevel #0 return -level 0 "#\[info level\]"
  }

  ? {uplevel #0 {objekt foo}} "\#0"

  #
  # TODO: Should we concat at all, or limited to the objc > 3 case only?
  #

  objekt public object method foo {} {
    # concat interferes!
    :uplevel [list [list a b]] return -level 0 "#\[info level\]"
  }

  ? {uplevel #0 {objekt foo}} {invalid command name "a b"}

  objekt public object method foo {} {
    # concat interferes!
    :uplevel [list [list a b]] [list return -level 0 "#\[info level\]"]
  }

  ? {uplevel #0 {objekt foo}} {invalid command name "a b"}

  objekt public object method foo {} {
    # concat interferes!
    :uplevel [list a b] [list return -level 0 "#\[info level\]"]
  }

  ? {uplevel #0 {objekt foo}} {invalid command name "a"}

  objekt public object method foo {} {
    # concat interferes!
    :uplevel [list a b] return -level 0 "#\[info level\]"
  }

  ? {uplevel #0 {objekt foo}} {invalid command name "a"}

  #
  # ad (2)
  #
  objekt public object method foo {} {
    :uplevel #1000 return -level 0 "#\[info level\]"
  }

  ? {uplevel #0 {objekt foo}} {bad level "#1000"}

  objekt public object method foo {} {
    :uplevel 1000 return -level 0 "#\[info level\]"
  }

  ? {uplevel #0 {objekt foo}} {bad level "1000"}
}

nx::test case uplevel-default-level {

  #
  # This is to test the single-argument case of uplevel, which will
  # default to a computed level, internally. This should avoid
  # "nonsense-parsing" of the single argument for a level specifier
  # (with leading digit or hash). This is in line with changes to
  # uplevel in Tcl 8.7 (see also TIP 515).
  #
  # https://core.tcl-lang.org/tips/doc/trunk/tip/515.md
  #

  nx::Object create objekt

  objekt public object method foo {} {
    :uplevel [list 123456 arg]
  }

  ? {uplevel #0 {
    objekt foo
  }} {invalid command name "123456"}

  ? {uplevel #0 {
    proc 123456 {args} {return $args}
    set r [objekt foo]
    rename 123456 ""
    set r
  }} "arg"

  objekt public object method foo {} {
    :uplevel [list #123456 arg2]
  }

  ? {uplevel #0 {
    objekt foo
  }} {invalid command name "#123456"}

  ? {uplevel #0 {
    proc #123456 {args} {return $args}
    set r [objekt foo]
    rename #123456 ""
    set r
  }} "arg2"
}

nx::test case upvar-method-signature {

  Object create objekt
  objekt public object method foo {} {
    :upvar #1;
  }

  ? {uplevel #0 {objekt foo}} \
      {wrong # args: should be "::objekt upvar ?level? otherVar localVar ?otherVar localVar ...?"}

  objekt public object method foo {} {
    :upvar 1;
  }

  ? {uplevel #0 {objekt foo}} \
      {wrong # args: should be "::objekt upvar ?level? otherVar localVar ?otherVar localVar ...?"}

  objekt public object method foo {} {
    :upvar;
  }

  ? {uplevel #0 {objekt foo}} \
      {wrong # args: should be "::objekt upvar ?level? otherVar localVar ?otherVar localVar ...?"}

  objekt public object method foo {} {
    :upvar x z;
    set z 5
  }

  ? {uplevel #0 {objekt foo; set x}} 5

  objekt public object method foo {} {
    :upvar #5 x z;
  }

  ? {uplevel #0 {objekt foo}} \
      {bad level "#5"}

  objekt public object method foo {} {
    :upvar #5 x z y;
    set x 1
  }

  ? {uplevel #0 {apply {{} {objekt foo; info exists "#5"}}}} 1
}

nx::test case uplevel-backwards-compatibility {

  nx::Object create ::o1

  proc a    {args} { return [list a    $args] }
  proc 1000 {args} { return [list 1000 $args] }

  ? {o1 eval {:uplevel 1000}}         {1000 {}}
  ? {o1 eval {:uplevel 1000 a}}       {bad level "1000"}
  ? {o1 eval {:uplevel 1000 a b}}     {bad level "1000"}
  ? {o1 eval {:uplevel {1000 a}}}     {1000 a}
  ? {o1 eval {:uplevel {1000 a b}}}   {1000 {a b}}
  ? {o1 eval {:uplevel {1000 {a b}}}} {1000 {{a b}}}

  ? {o1 eval {:uplevel ::1000}}         {1000 {}}
  ? {o1 eval {:uplevel ::1000 a}}       {1000 a}
  ? {o1 eval {:uplevel ::1000 a b}}     {1000 {a b}}
  ? {o1 eval {:uplevel {::1000 a}}}     {1000 a}
  ? {o1 eval {:uplevel {::1000 a b}}}   {1000 {a b}}
  ? {o1 eval {:uplevel {::1000 {a b}}}} {1000 {{a b}}}

  rename a ""
  rename 1000 ""
}



# Local variables:
#    mode: tcl
#    tcl-indent-level: 2
#    indent-tabs-mode: nil
# End: