# Functionality covered: this file contains slightly modified versions of
# the original tests written by Mike McLennan of Lucent Technologies for
# the procedures in tclNamesp.c that implement Tcl's basic support for
# namespaces. Other namespace-related tests appear in namespace.test
# and variable.test.
#
# Sourcing this file into Tcl runs the tests and generates output for
# errors. No output means no errors were found.
#
# Copyright © 1997 Sun Microsystems, Inc.
# Copyright © 1997 Lucent Technologies
# Copyright © 1998-1999 Scriptics Corporation.
#
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.

if {"::tcltest" ni [namespace children]} {
    package require tcltest 2.5
    namespace import -force ::tcltest::*
}

# Clear out any namespaces called test_ns_*
catch {namespace delete {*}[namespace children :: test_ns_*]}

test namespace-old-1.1 {usage for "namespace" command} {
    list [catch {namespace} msg] $msg
} {1 {wrong # args: should be "namespace subcommand ?arg ...?"}}
test namespace-old-1.2 {global namespace's name is "::" or {}} {
    list [namespace current] [namespace eval {} {namespace current}]
} {:: ::}
test namespace-old-1.3 {usage for "namespace eval"} {
    list [catch {namespace eval} msg] $msg
} {1 {wrong # args: should be "namespace eval name arg ?arg...?"}}
test namespace-old-1.4 {create new namespaces} {
    list [lsort [namespace children :: test_ns_simple*]] \
	 [namespace eval test_ns_simple {}] \
	 [namespace eval test_ns_simple2 {}] \
	 [lsort [namespace children :: test_ns_simple*]]
} {{} {} {} {::test_ns_simple ::test_ns_simple2}}
test namespace-old-1.5 {access a new namespace} {
    namespace eval test_ns_simple { namespace current }
} {::test_ns_simple}
test namespace-old-1.6 {usage for "namespace eval"} {
    list [catch {namespace eval} msg] $msg
} {1 {wrong # args: should be "namespace eval name arg ?arg...?"}}
test namespace-old-1.7 {usage for "namespace eval"} {
    list [catch {namespace eval test_ns_xyzzy} msg] $msg
} {1 {wrong # args: should be "namespace eval name arg ?arg...?"}}
test namespace-old-1.8 {command "namespace eval" concatenates args} {
    namespace eval test_ns_simple namespace current
} {::test_ns_simple}
test namespace-old-1.9 {add elements to a namespace} {
    namespace eval test_ns_simple {
	variable test_ns_x 0
	proc test {test_ns_x} {
	    return "test: $test_ns_x"
	}
    }
} {}
namespace eval test_ns_simple {
    variable test_ns_x 0
    proc test {test_ns_x} {
	return "test: $test_ns_x"
    }
}
test namespace-old-1.10 {commands in a namespace} {
    namespace eval test_ns_simple { info commands [namespace current]::*}
} {::test_ns_simple::test}
test namespace-old-1.11 {variables in a namespace} {
    namespace eval test_ns_simple { info vars [namespace current]::* }
} {::test_ns_simple::test_ns_x}
test namespace-old-1.12 {global vars are separate from locals vars} {
    list [test_ns_simple::test 123] [set test_ns_simple::test_ns_x]
} {{test: 123} 0}
test namespace-old-1.13 {add to an existing namespace} {
    namespace eval test_ns_simple {
	variable test_ns_y 123
	proc _backdoor {cmd} {
	    eval $cmd
	}
    }
} ""
namespace eval test_ns_simple {
    variable test_ns_y 123
    proc _backdoor {cmd} {
	eval $cmd
    }
}
test namespace-old-1.14 {commands in a namespace} {
    lsort [namespace eval test_ns_simple {info commands [namespace current]::*}]
} {::test_ns_simple::_backdoor ::test_ns_simple::test}
test namespace-old-1.15 {variables in a namespace} {
    lsort [namespace eval test_ns_simple {info vars [namespace current]::*}]
} {::test_ns_simple::test_ns_x ::test_ns_simple::test_ns_y}
test namespace-old-1.16 {variables in a namespace} {
    lsort [info vars test_ns_simple::*]
} {::test_ns_simple::test_ns_x ::test_ns_simple::test_ns_y}
test namespace-old-1.17 {commands in a namespace are hidden} {
    list [catch "_backdoor {return yes!}" msg] $msg
} {1 {invalid command name "_backdoor"}}
test namespace-old-1.18 {using namespace qualifiers} {
    list [catch "test_ns_simple::_backdoor {return yes!}" msg] $msg
} {0 yes!}
test namespace-old-1.19 {using absolute namespace qualifiers} {
    list [catch "::test_ns_simple::_backdoor {return yes!}" msg] $msg
} {0 yes!}
test namespace-old-1.20 {variables in a namespace are hidden} {
    list [catch "set test_ns_x" msg] $msg [catch "set test_ns_y" msg] $msg
} {1 {can't read "test_ns_x": no such variable} 1 {can't read "test_ns_y": no such variable}}
test namespace-old-1.21 {using namespace qualifiers} {
    list [catch "set test_ns_simple::test_ns_x" msg] $msg \
	 [catch "set test_ns_simple::test_ns_y" msg] $msg
} {0 0 0 123}
test namespace-old-1.22 {using absolute namespace qualifiers} {
    list [catch "set ::test_ns_simple::test_ns_x" msg] $msg \
	 [catch "set ::test_ns_simple::test_ns_y" msg] $msg
} {0 0 0 123}
test namespace-old-1.23 {variables can be accessed within a namespace} {
    test_ns_simple::_backdoor {
	variable test_ns_x
	variable test_ns_y
	return "$test_ns_x $test_ns_y"
    }
} {0 123}
test namespace-old-1.24 {setting global variables} {
    test_ns_simple::_backdoor {variable test_ns_x;  set test_ns_x "new val"}
    namespace eval test_ns_simple {set test_ns_x}
} {new val}
test namespace-old-1.25 {qualified variables don't need a global declaration} {
    namespace eval test_ns_another { variable test_ns_x 456 }
    set cmd {set ::test_ns_another::test_ns_x}
    list [catch {test_ns_simple::_backdoor "$cmd some-value"} msg] $msg \
	 [eval $cmd]
} {0 some-value some-value}
test namespace-old-1.26 {namespace qualifiers are okay after $'s} {
    namespace eval test_ns_simple { set test_ns_x 12; set test_ns_y 34 }
    set cmd {list $::test_ns_simple::test_ns_x $::test_ns_simple::test_ns_y}
    list [test_ns_simple::_backdoor $cmd] [eval $cmd]
} {{12 34} {12 34}}
test namespace-old-1.27 {can create commands with null names} {
    proc test_ns_simple:: {args} {return $args}
} {}
# Redeclare; later tests depend on it
proc test_ns_simple:: {args} {return $args}

# -----------------------------------------------------------------------
# TEST: using "info" in namespace contexts
# -----------------------------------------------------------------------
test namespace-old-2.1 {querying:  info commands} {
    lsort [test_ns_simple::_backdoor {info commands [namespace current]::*}]
} {::test_ns_simple:: ::test_ns_simple::_backdoor ::test_ns_simple::test}
test namespace-old-2.2 {querying:  info procs} {
    lsort [test_ns_simple::_backdoor {info procs}]
} {{} _backdoor test}
test namespace-old-2.3 {querying:  info vars} {
    lsort [info vars test_ns_simple::*]
} {::test_ns_simple::test_ns_x ::test_ns_simple::test_ns_y}
test namespace-old-2.4 {querying:  info vars} {
    lsort [test_ns_simple::_backdoor {info vars [namespace current]::*}]
} {::test_ns_simple::test_ns_x ::test_ns_simple::test_ns_y}
test namespace-old-2.5 {querying:  info locals} {
    lsort [test_ns_simple::_backdoor {info locals}]
} {cmd}
test namespace-old-2.6 {querying:  info exists} {
    test_ns_simple::_backdoor {info exists test_ns_x}
} {0}
test namespace-old-2.7 {querying:  info exists} {
    test_ns_simple::_backdoor {info exists cmd}
} {1}
test namespace-old-2.8 {querying:  info args} {
    info args test_ns_simple::_backdoor
} {cmd}
test namespace-old-2.9 {querying:  info body} {
    string trim [info body test_ns_simple::test]
} {return "test: $test_ns_x"}

# -----------------------------------------------------------------------
# TEST: namespace qualifiers, namespace tail
# -----------------------------------------------------------------------
test namespace-old-3.1 {usage for "namespace qualifiers"} {
    list [catch "namespace qualifiers" msg] $msg
} {1 {wrong # args: should be "namespace qualifiers string"}}
test namespace-old-3.2 {querying:  namespace qualifiers} {
    list [namespace qualifiers ""] \
	 [namespace qualifiers ::] \
	 [namespace qualifiers x] \
	 [namespace qualifiers ::x] \
	 [namespace qualifiers foo::x] \
	 [namespace qualifiers ::foo::bar::xyz]
} {{} {} {} {} foo ::foo::bar}
test namespace-old-3.3 {usage for "namespace tail"} {
    list [catch "namespace tail" msg] $msg
} {1 {wrong # args: should be "namespace tail string"}}
test namespace-old-3.4 {querying:  namespace tail} {
    list [namespace tail ""] \
	 [namespace tail ::] \
	 [namespace tail x] \
	 [namespace tail ::x] \
	 [namespace tail foo::x] \
	 [namespace tail ::foo::bar::xyz]
} {{} {} x x x xyz}

# -----------------------------------------------------------------------
# TEST: delete commands and namespaces
# -----------------------------------------------------------------------
test namespace-old-4.1 {define test namespaces} {
    namespace eval test_ns_delete {
	namespace eval ns1 {
	    variable var1 1
	    proc cmd1 {} {return "cmd1"}
	}
	namespace eval ns2 {
	    variable var2 2
	    proc cmd2 {} {return "cmd2"}
	}
	namespace eval another {}
	lsort [namespace children]
    }
} {::test_ns_delete::another ::test_ns_delete::ns1 ::test_ns_delete::ns2}
test namespace-old-4.2 {it's okay to invoke "namespace delete" with no args} {
    list [catch {namespace delete} msg] $msg
} {0 {}}
test namespace-old-4.3 {command "namespace delete" doesn't support patterns} {
    set cmd {
	namespace eval test_ns_delete {namespace delete ns*}
    }
    list [catch $cmd msg] $msg
} {1 {unknown namespace "ns*" in namespace delete command}}
namespace eval test_ns_delete {
    namespace eval ns1 {}
    namespace eval ns2 {}
    namespace eval another {}
}
test namespace-old-4.4 {command "namespace delete" handles multiple args} {
    set cmd {
	namespace eval test_ns_delete {
	    namespace delete \
		{*}[namespace children [namespace current] ns?]
	}
    }
    list [catch $cmd msg] $msg [namespace children test_ns_delete]
} {0 {} ::test_ns_delete::another}

# -----------------------------------------------------------------------
# TEST: namespace hierarchy
# -----------------------------------------------------------------------
test namespace-old-5.1 {define nested namespaces} {
    set test_ns_var_global "var in ::"
    proc test_ns_cmd_global {} {return "cmd in ::"}
    namespace eval test_ns_hier1 {
	set test_ns_var_hier1 "particular to hier1"
	proc test_ns_cmd_hier1 {} {return "particular to hier1"}
	set test_ns_level 1
	proc test_ns_show {} {return "[namespace current]: 1"}
	namespace eval test_ns_hier2 {
	    set test_ns_var_hier2 "particular to hier2"
	    proc test_ns_cmd_hier2 {} {return "particular to hier2"}
	    set test_ns_level 2
	    proc test_ns_show {} {return "[namespace current]: 2"}
	    namespace eval test_ns_hier3a {}
	    namespace eval test_ns_hier3b {}
	}
	namespace eval test_ns_hier2a {}
	namespace eval test_ns_hier2b {}
    }
} {}
test namespace-old-5.2 {namespaces can be nested} {
    list [namespace eval test_ns_hier1 {namespace current}] \
	 [namespace eval test_ns_hier1 {
	      namespace eval test_ns_hier2 {namespace current}
	  }]
} {::test_ns_hier1 ::test_ns_hier1::test_ns_hier2}
test namespace-old-5.3 {namespace qualifiers work in namespace command} {
    list [namespace eval ::test_ns_hier1 {namespace current}] \
	 [namespace eval test_ns_hier1::test_ns_hier2 {namespace current}] \
	 [namespace eval ::test_ns_hier1::test_ns_hier2 {namespace current}]
} {::test_ns_hier1 ::test_ns_hier1::test_ns_hier2 ::test_ns_hier1::test_ns_hier2}
set ::test_ns_var_global "var in ::"
proc test_ns_cmd_global {} {return "cmd in ::"}
namespace eval test_ns_hier1 {
    variable test_ns_var_hier1 "particular to hier1"
    proc test_ns_cmd_hier1 {} {return "particular to hier1"}
    variable test_ns_level 1
    proc test_ns_show {} {return "[namespace current]: 1"}
    namespace eval test_ns_hier2 {
	variable test_ns_var_hier2 "particular to hier2"
	proc test_ns_cmd_hier2 {} {return "particular to hier2"}
	variable test_ns_level 2
	proc test_ns_show {} {return "[namespace current]: 2"}
	namespace eval test_ns_hier3a {}
	namespace eval test_ns_hier3b {}
    }
    namespace eval test_ns_hier2a {}
    namespace eval test_ns_hier2b {}
}
# TIP 278: secondary lookup disabled for vars, tests disabled with #
test namespace-old-5.4 {nested namespaces can access global namespace} {
    list [namespace eval test_ns_hier1 {#set test_ns_var_global}] \
	 [namespace eval test_ns_hier1 {test_ns_cmd_global}] \
	 [namespace eval test_ns_hier1::test_ns_hier2 {#set test_ns_var_global}] \
	 [namespace eval test_ns_hier1::test_ns_hier2 {test_ns_cmd_global}]
} {{} {cmd in ::} {} {cmd in ::}}
test namespace-old-5.5 {variables in different namespaces don't conflict} {
    list [set test_ns_hier1::test_ns_level] \
	 [set test_ns_hier1::test_ns_hier2::test_ns_level]
} {1 2}
test namespace-old-5.6 {commands in different namespaces don't conflict} {
    list [test_ns_hier1::test_ns_show] \
	 [test_ns_hier1::test_ns_hier2::test_ns_show]
} {{::test_ns_hier1: 1} {::test_ns_hier1::test_ns_hier2: 2}}
test namespace-old-5.7 {nested namespaces don't see variables in parent} {
    set cmd {
	namespace eval test_ns_hier1::test_ns_hier2 {set test_ns_var_hier1}
    }
    list [catch $cmd msg] $msg
} {1 {can't read "test_ns_var_hier1": no such variable}}
test namespace-old-5.8 {nested namespaces don't see commands in parent} {
    set cmd {
	namespace eval test_ns_hier1::test_ns_hier2 {test_ns_cmd_hier1}
    }
    list [catch $cmd msg] $msg
} {1 {invalid command name "test_ns_cmd_hier1"}}
test namespace-old-5.9 {usage for "namespace children"} {
    list [catch {namespace children test_ns_hier1 y z} msg] $msg
} {1 {wrong # args: should be "namespace children ?name? ?pattern?"}}
test namespace-old-5.10 {command "namespace children" must get valid namespace} -body {
    namespace children xyzzy
} -returnCodes error -result {namespace "xyzzy" not found in "::"}
test namespace-old-5.11 {querying namespace children} {
    lsort [namespace children :: test_ns_hier*]
} {::test_ns_hier1}
test namespace-old-5.12 {querying namespace children} {
    lsort [namespace children test_ns_hier1]
} {::test_ns_hier1::test_ns_hier2 ::test_ns_hier1::test_ns_hier2a ::test_ns_hier1::test_ns_hier2b}
test namespace-old-5.13 {querying namespace children} {
    lsort [namespace eval test_ns_hier1 {namespace children}]
} {::test_ns_hier1::test_ns_hier2 ::test_ns_hier1::test_ns_hier2a ::test_ns_hier1::test_ns_hier2b}
test namespace-old-5.14 {querying namespace children} {
    lsort [namespace children test_ns_hier1::test_ns_hier2]
} {::test_ns_hier1::test_ns_hier2::test_ns_hier3a ::test_ns_hier1::test_ns_hier2::test_ns_hier3b}
test namespace-old-5.15 {querying namespace children} {
    lsort [namespace eval test_ns_hier1::test_ns_hier2 {namespace children}]
} {::test_ns_hier1::test_ns_hier2::test_ns_hier3a ::test_ns_hier1::test_ns_hier2::test_ns_hier3b}
test namespace-old-5.16 {querying namespace children with patterns} {
    lsort [namespace children test_ns_hier1::test_ns_hier2 test_ns_*]
} {::test_ns_hier1::test_ns_hier2::test_ns_hier3a ::test_ns_hier1::test_ns_hier2::test_ns_hier3b}
test namespace-old-5.17 {querying namespace children with patterns} {
    lsort [namespace children test_ns_hier1::test_ns_hier2 *b]
} {::test_ns_hier1::test_ns_hier2::test_ns_hier3b}
test namespace-old-5.18 {usage for "namespace parent"} {
    list [catch {namespace parent x y} msg] $msg
} {1 {wrong # args: should be "namespace parent ?name?"}}
test namespace-old-5.19 {command "namespace parent" must get valid namespace} -body {
    namespace parent xyzzy
} -returnCodes error -result {namespace "xyzzy" not found in "::"}
test namespace-old-5.20 {querying namespace parent} {
    list [namespace eval :: {namespace parent}] \
	[namespace eval test_ns_hier1 {namespace parent}] \
	[namespace eval test_ns_hier1::test_ns_hier2 {namespace parent}] \
	[namespace eval test_ns_hier1::test_ns_hier2::test_ns_hier3a {namespace parent}] \
} {{} :: ::test_ns_hier1 ::test_ns_hier1::test_ns_hier2}
test namespace-old-5.21 {querying namespace parent for explicit namespace} {
    list [namespace parent ::] \
	 [namespace parent test_ns_hier1] \
	 [namespace parent test_ns_hier1::test_ns_hier2] \
	 [namespace parent test_ns_hier1::test_ns_hier2::test_ns_hier3a]
} {{} :: ::test_ns_hier1 ::test_ns_hier1::test_ns_hier2}

# -----------------------------------------------------------------------
# TEST: name resolution and caching
# -----------------------------------------------------------------------
set trigger {namespace eval test_ns_cache2 {namespace current}}
set trigger2 {namespace eval test_ns_cache2::test_ns_cache3 {namespace current}}
test namespace-old-6.1 {relative ns names only looked up in current ns} {
    namespace eval test_ns_cache1 {}
    namespace eval test_ns_cache2 {}
    namespace eval test_ns_cache2::test_ns_cache3 {}
    list [namespace eval test_ns_cache1 $trigger] \
	 [namespace eval test_ns_cache1 $trigger2]
} {::test_ns_cache1::test_ns_cache2 ::test_ns_cache1::test_ns_cache2::test_ns_cache3}
test namespace-old-6.2 {relative ns names only looked up in current ns} {
    namespace eval test_ns_cache1::test_ns_cache2 {}
    list [namespace eval test_ns_cache1 $trigger] \
	 [namespace eval test_ns_cache1 $trigger2]
} {::test_ns_cache1::test_ns_cache2 ::test_ns_cache1::test_ns_cache2::test_ns_cache3}
test namespace-old-6.3 {relative ns names only looked up in current ns} {
    namespace eval test_ns_cache1::test_ns_cache2::test_ns_cache3 {}
    list [namespace eval test_ns_cache1 $trigger] \
	 [namespace eval test_ns_cache1 $trigger2]
} {::test_ns_cache1::test_ns_cache2 ::test_ns_cache1::test_ns_cache2::test_ns_cache3}
namespace eval test_ns_cache1::test_ns_cache2 {}
test namespace-old-6.4 {relative ns names only looked up in current ns} {
    namespace delete test_ns_cache1::test_ns_cache2
    list [namespace eval test_ns_cache1 $trigger] \
	 [namespace eval test_ns_cache1 $trigger2]
} {::test_ns_cache1::test_ns_cache2 ::test_ns_cache1::test_ns_cache2::test_ns_cache3}
namespace eval test_ns_cache1 {
    proc trigger {} {test_ns_cache_cmd}
}
test namespace-old-6.5 {define test commands} {
    proc test_ns_cache_cmd {} {
	return "global version"
    }
    test_ns_cache1::trigger
} {global version}
test namespace-old-6.6 {one-level check for command shadowing} {
    proc test_ns_cache1::test_ns_cache_cmd {} {
	return "cache1 version"
    }
    test_ns_cache1::trigger
} {cache1 version}
proc test_ns_cache_cmd {} {
    return "global version"
}
test namespace-old-6.7 {renaming commands changes command epoch} -setup {
    proc test_ns_cache1::test_ns_cache_cmd {} {
	return "cache1 version"
    }
} -body {
    list [test_ns_cache1::trigger] \
	[namespace eval test_ns_cache1 {rename test_ns_cache_cmd test_ns_new}]\
	[test_ns_cache1::trigger]
} -result {{cache1 version} {} {global version}}
test namespace-old-6.8 {renaming back handles shadowing} -setup {
    proc test_ns_cache1::test_ns_new {} {
	return "cache1 version"
    }
} -body {
    list [test_ns_cache1::trigger] \
	[namespace eval test_ns_cache1 {rename test_ns_new test_ns_cache_cmd}]\
	[test_ns_cache1::trigger]
} -result {{global version} {} {cache1 version}}
test namespace-old-6.9 {deleting commands changes command epoch} -setup {
    proc test_ns_cache1::test_ns_cache_cmd {} {
	return "cache1 version"
    }
} -body {
    list [test_ns_cache1::trigger] \
	[namespace eval test_ns_cache1 {rename test_ns_cache_cmd ""}] \
	[test_ns_cache1::trigger]
} -result {{cache1 version} {} {global version}}
test namespace-old-6.10 {define test namespaces} {
    namespace eval test_ns_cache2 {
	proc test_ns_cache_cmd {} {
	    return "global cache2 version"
	}
    }
    namespace eval test_ns_cache1 {
	proc trigger {} {
	    test_ns_cache2::test_ns_cache_cmd
	}
    }
    namespace eval test_ns_cache1::test_ns_cache2 {
	proc trigger {} {
	    test_ns_cache_cmd
	}
    }
    list [test_ns_cache1::trigger] [test_ns_cache1::test_ns_cache2::trigger]
} {{global cache2 version} {global version}}
namespace eval test_ns_cache1 {
    proc trigger {} { test_ns_cache2::test_ns_cache_cmd }
    namespace eval test_ns_cache2 {
	proc trigger {} { test_ns_cache_cmd }
    }
}
test namespace-old-6.11 {commands affect all parent namespaces} {
    proc test_ns_cache1::test_ns_cache2::test_ns_cache_cmd {} {
	return "cache2 version"
    }
    list [test_ns_cache1::trigger] [test_ns_cache1::test_ns_cache2::trigger]
} {{cache2 version} {cache2 version}}
# TIP 278: secondary lookup disabled, catch added, result changed from {global version}
test namespace-old-6.12 {define test variables} {
    variable test_ns_cache_var "global version"
    set trigger {set test_ns_cache_var}
    list [catch {namespace eval test_ns_cache1 $trigger} msg] $msg
} {1 {can't read "test_ns_cache_var": no such variable}}
    set trigger {set test_ns_cache_var}
test namespace-old-6.13 {one-level check for variable shadowing} {
    namespace eval test_ns_cache1 {
	variable test_ns_cache_var "cache1 version"
    }
    namespace eval test_ns_cache1 $trigger
} {cache1 version}
variable ::test_ns_cache_var "global version"
# TIP 278: secondary lookup disabled, catch added, result changed from {global version}
test namespace-old-6.14 {deleting variables changes variable epoch} {
    namespace eval test_ns_cache1 {
	variable test_ns_cache_var "cache1 version"
    }
    list [namespace eval test_ns_cache1 $trigger] \
	[namespace eval test_ns_cache1 {unset test_ns_cache_var}] \
	[catch {namespace eval test_ns_cache1 $trigger}]
} {{cache1 version} {} 1}
# TIP 278: secondary lookup disabled, catch added, result changed
test namespace-old-6.15 {define test namespaces} {
    namespace eval test_ns_cache2 {
	variable test_ns_cache_var "global cache2 version"
    }
    set trigger2 {set test_ns_cache2::test_ns_cache_var}
    catch {list [namespace eval test_ns_cache1 $trigger2] \
	       [namespace eval test_ns_cache1::test_ns_cache2 $trigger]}
} 1
set trigger2 {set test_ns_cache2::test_ns_cache_var}
test namespace-old-6.16 {public variables affect all parent namespaces} {
    variable test_ns_cache1::test_ns_cache2::test_ns_cache_var "cache2 version"
    list [namespace eval test_ns_cache1 $trigger2] \
	 [namespace eval test_ns_cache1::test_ns_cache2 $trigger]
} {{cache2 version} {cache2 version}}
test namespace-old-6.17 {usage for "namespace which"} {
    list [catch "namespace which -baz x" msg] $msg
} {1 {wrong # args: should be "namespace which ?-command? ?-variable? name"}}
test namespace-old-6.18 {usage for "namespace which"} {
    # Presume no imported command called -command ;^)
    namespace which -command
} {}
test namespace-old-6.19 {querying:  namespace which -command} {
    proc test_ns_cache1::test_ns_cache_cmd {} {
	return "cache1 version"
    }
    list [namespace eval :: {namespace which test_ns_cache_cmd}] \
	 [namespace eval test_ns_cache1 {namespace which test_ns_cache_cmd}] \
	 [namespace eval :: {namespace which -command test_ns_cache_cmd}] \
	 [namespace eval test_ns_cache1 {namespace which -command test_ns_cache_cmd}]
} {::test_ns_cache_cmd ::test_ns_cache1::test_ns_cache_cmd ::test_ns_cache_cmd ::test_ns_cache1::test_ns_cache_cmd}
test namespace-old-6.20 {command "namespace which" may not find commands} {
    namespace eval test_ns_cache1 {namespace which -command xyzzy}
} {}
variable test_ns_cache1::test_ns_cache2::test_ns_cache_var "cache2 version"
test namespace-old-6.21 {querying:  namespace which -variable} {
    namespace eval test_ns_cache1::test_ns_cache2 {
	namespace which -variable test_ns_cache_var
    }
} {::test_ns_cache1::test_ns_cache2::test_ns_cache_var}
test namespace-old-6.22 {command "namespace which" may not find variables} {
    namespace eval test_ns_cache1 {namespace which -variable xyzzy}
} {}

# -----------------------------------------------------------------------
# TEST: uplevel/upvar across namespace boundaries
# -----------------------------------------------------------------------
test namespace-old-7.1 {define test namespace} {
    namespace eval test_ns_uplevel {
	variable x 0
	variable y 1
	proc show_vars {num} {
	    return [uplevel $num {info vars}]
	}
	proc test_uplevel {num} {
	    set a 0
	    set b 1
	    namespace eval ::test_ns_uplevel " return \[show_vars $num\] "
	}
    }
} {}
namespace eval test_ns_uplevel {
    variable x 0
    variable y 1
    proc show_vars {num} {
	return [uplevel $num {info vars}]
    }
    proc test_uplevel {num} {
	set a 0
	set b 1
	namespace eval ::test_ns_uplevel " return \[show_vars $num\] "
    }
}
test namespace-old-7.2 {uplevel can access namespace call frame} {
    list [expr {"x" in [test_ns_uplevel::test_uplevel 1]}] \
	 [expr {"y" in [test_ns_uplevel::test_uplevel 1]}]
} {1 1}
test namespace-old-7.3 {uplevel can go beyond namespace call frame} {
    lsort [test_ns_uplevel::test_uplevel 2]
} {a b num}
test namespace-old-7.4 {uplevel can go up to global context} {
    expr {[test_ns_uplevel::test_uplevel 3] == [info globals]}
} {1}
test namespace-old-7.5 {absolute call frame references work too} {
    list [expr {"x" in [test_ns_uplevel::test_uplevel #2]}] \
	 [expr {"y" in [test_ns_uplevel::test_uplevel #2]}]
} {1 1}
test namespace-old-7.6 {absolute call frame references work too} {
    lsort [test_ns_uplevel::test_uplevel #1]
} {a b num}
test namespace-old-7.7 {absolute call frame references work too} {
    expr {[test_ns_uplevel::test_uplevel #0] == [info globals]}
} {1}
test namespace-old-7.8 {namespaces are included in the call stack} {
    namespace eval test_ns_upvar {
	variable scope "test_ns_upvar"
	proc show_val {var num} {
	    upvar $num $var x
	    return $x
	}
	proc test_upvar {num} {
	    set scope "test_ns_upvar::test_upvar"
	    namespace eval ::test_ns_upvar " return \[show_val scope $num\] "
	}
    }
} {}
namespace eval test_ns_upvar {
    variable scope "test_ns_upvar"
    proc show_val {var num} {
	upvar $num $var x
	return $x
    }
    proc test_upvar {num} {
	set scope "test_ns_upvar::test_upvar"
	namespace eval ::test_ns_upvar " return \[show_val scope $num\] "
    }
}
test namespace-old-7.9 {upvar can access namespace call frame} {
    test_ns_upvar::test_upvar 1
} {test_ns_upvar}
test namespace-old-7.10 {upvar can go beyond namespace call frame} {
    test_ns_upvar::test_upvar 2
} {test_ns_upvar::test_upvar}
test namespace-old-7.11 {absolute call frame references work too} {
    test_ns_upvar::test_upvar #2
} {test_ns_upvar}
test namespace-old-7.12 {absolute call frame references work too} {
    test_ns_upvar::test_upvar #1
} {test_ns_upvar::test_upvar}

# -----------------------------------------------------------------------
# TEST: variable traces across namespace boundaries
# -----------------------------------------------------------------------
test namespace-old-8.1 {traces work across namespace boundaries} {
    namespace eval test_ns_trace {
	namespace eval foo {
	    variable x ""
	}
	variable status ""
	proc monitor {name1 name2 op} {
	    variable status
	    lappend status "$op: $name1"
	}
	trace add variable foo::x {read write unset} [namespace code monitor]
    }
    set test_ns_trace::foo::x "yes!"
    set test_ns_trace::foo::x
    unset test_ns_trace::foo::x
    namespace eval test_ns_trace { set status }
} {{write: test_ns_trace::foo::x} {read: test_ns_trace::foo::x} {unset: test_ns_trace::foo::x}}

# -----------------------------------------------------------------------
# TEST: imported commands
# -----------------------------------------------------------------------
test namespace-old-9.1 {empty "namespace export" list} {
    list [catch "namespace export" msg] $msg
} {0 {}}
test namespace-old-9.2 {usage for "namespace export" command} {
    list [catch "namespace export test_ns_trace::zzz" msg] $msg
} {1 {invalid export pattern "test_ns_trace::zzz": pattern can't specify a namespace}}
test namespace-old-9.3 {define test namespaces for import} {
    namespace eval test_ns_export {
	namespace export cmd1 cmd2 cmd3
	proc cmd1 {args} {return "cmd1: $args"}
	proc cmd2 {args} {return "cmd2: $args"}
	proc cmd3 {args} {return "cmd3: $args"}
	proc cmd4 {args} {return "cmd4: $args"}
	proc cmd5 {args} {return "cmd5: $args"}
	proc cmd6 {args} {return "cmd6: $args"}
    }
    lsort [info commands test_ns_export::*]
} {::test_ns_export::cmd1 ::test_ns_export::cmd2 ::test_ns_export::cmd3 ::test_ns_export::cmd4 ::test_ns_export::cmd5 ::test_ns_export::cmd6}
namespace eval test_ns_export {
    namespace export cmd1 cmd2 cmd3
    proc cmd1 {args} {return "cmd1: $args"}
    proc cmd2 {args} {return "cmd2: $args"}
    proc cmd3 {args} {return "cmd3: $args"}
    proc cmd4 {args} {return "cmd4: $args"}
    proc cmd5 {args} {return "cmd5: $args"}
    proc cmd6 {args} {return "cmd6: $args"}
}
test namespace-old-9.4 {check export status} {
    set x ""
    namespace eval test_ns_import {
	namespace export cmd1 cmd2
	namespace import ::test_ns_export::*
    }
    foreach cmd [lsort [info commands test_ns_import::*]] {
	lappend x $cmd
    }
    set x
} {::test_ns_import::cmd1 ::test_ns_import::cmd2 ::test_ns_import::cmd3}
namespace eval test_ns_import {
    namespace export cmd1 cmd2
    namespace import ::test_ns_export::*
}
test namespace-old-9.5 {empty import list in "namespace import" command} {
    namespace eval test_ns_import_empty {
	namespace import ::test_ns_export::*
	try {
	    lsort [namespace import]
	} finally {
	    namespace delete [namespace current]
	}
    }
} {cmd1 cmd2 cmd3}
# there is no namespace-old-9.6
test namespace-old-9.7 {empty forget list for "namespace forget" command} {
    namespace forget
} {}
catch {rename cmd1 {}}
catch {rename cmd2 {}}
catch {rename ncmd {}}
catch {rename ncmd1 {}}
catch {rename ncmd2 {}}
test namespace-old-9.8 {only exported commands are imported} {
    namespace import test_ns_import::cmd*
    set x [lsort [info commands cmd*]]
} {cmd1 cmd2}
namespace import test_ns_import::cmd*
test namespace-old-9.9 {imported commands work just the same as original} {
    list [cmd1 test 1 2 3] [test_ns_import::cmd1 test 4 5 6]
} {{cmd1: test 1 2 3} {cmd1: test 4 5 6}}
test namespace-old-9.10 {commands can be imported from many namespaces} {
    namespace eval test_ns_import2 {
	namespace export ncmd ncmd1 ncmd2
	proc ncmd  {args} {return "ncmd: $args"}
	proc ncmd1 {args} {return "ncmd1: $args"}
	proc ncmd2 {args} {return "ncmd2: $args"}
	proc ncmd3 {args} {return "ncmd3: $args"}
    }
    namespace import test_ns_import2::*
    lsort [concat [info commands cmd*] [info commands ncmd*]]
} {cmd1 cmd2 ncmd ncmd1 ncmd2}
namespace eval test_ns_import2 {
    namespace export ncmd ncmd1 ncmd2
    proc ncmd  {args} {return "ncmd: $args"}
    proc ncmd1 {args} {return "ncmd1: $args"}
    proc ncmd2 {args} {return "ncmd2: $args"}
    proc ncmd3 {args} {return "ncmd3: $args"}
}
namespace import test_ns_import2::*
test namespace-old-9.11 {imported commands can be removed by deleting them} {
    rename cmd1 ""
    lsort [concat [info commands cmd*] [info commands ncmd*]]
} {cmd2 ncmd ncmd1 ncmd2}
catch { rename cmd1 "" }
test namespace-old-9.12 {command "namespace forget" checks for valid namespaces} {
    list [catch {namespace forget xyzzy::*} msg] $msg
} {1 {unknown namespace in namespace forget pattern "xyzzy::*"}}
test namespace-old-9.13 {command "namespace forget" ignores patterns that don't match} {
    list [catch {namespace forget test_ns_import::xy*zzy} msg] $msg \
	 [lsort [info commands cmd?]]
} {0 {} cmd2}
test namespace-old-9.14 {imported commands can be removed} {
    namespace forget test_ns_import::cmd?
    list [lsort [info commands cmd?]] \
	 [catch {cmd1 another test} msg] $msg
} {{} 1 {invalid command name "cmd1"}}
test namespace-old-9.15 {existing commands can't be overwritten} {
    proc cmd1 {x y} {
	return [expr {$x+$y}]
    }
    list [catch {namespace import test_ns_import::cmd?} msg] $msg \
	 [cmd1 3 5]
} {1 {can't import command "cmd1": already exists} 8}
test namespace-old-9.16 {use "-force" option to override existing commands} {
    proc cmd1 {x y} { return [expr {$x+$y}] }
    list [cmd1 3 5] \
	 [namespace import -force test_ns_import::cmd?] \
	 [cmd1 3 5]
} {8 {} {cmd1: 3 5}}
test namespace-old-9.17 {commands can be imported into many namespaces} {
    namespace eval test_ns_import_use {
	namespace import ::test_ns_import::* ::test_ns_import2::ncmd?
	lsort [concat [info commands ::test_ns_import_use::cmd*] \
		      [info commands ::test_ns_import_use::ncmd*]]
    }
} {::test_ns_import_use::cmd1 ::test_ns_import_use::cmd2 ::test_ns_import_use::ncmd1 ::test_ns_import_use::ncmd2}
test namespace-old-9.18 {when command is deleted, imported commands go away} {
    namespace eval test_ns_import { rename cmd1 "" }
    list [info commands cmd1] \
	 [namespace eval test_ns_import_use {info commands cmd1}]
} {{} {}}
test namespace-old-9.19 {when namesp is deleted, all imported commands go away} {
    namespace delete test_ns_import test_ns_import2
    list [info commands cmd*] \
	 [info commands ncmd*] \
	 [namespace eval test_ns_import_use {info commands cmd*}] \
	 [namespace eval test_ns_import_use {info commands ncmd*}] \
} {{} {} {} {}}

# -----------------------------------------------------------------------
# TEST: scoped values
# -----------------------------------------------------------------------
test namespace-old-10.1 {define namespace for scope test} {
    namespace eval test_ns_inscope {
	variable x "x-value"
	proc show {args} {
	    return "show: $args"
	}
	proc do {args} {
	    return [eval $args]
	}
	list [set x] [show test]
    }
} {x-value {show: test}}
test namespace-old-10.2 {command "namespace code" requires one argument} {
    list [catch {namespace code} msg] $msg
} {1 {wrong # args: should be "namespace code arg"}}
test namespace-old-10.3 {command "namespace code" requires one argument} {
    list [catch {namespace code first "second arg" third} msg] $msg
} {1 {wrong # args: should be "namespace code arg"}}
test namespace-old-10.4 {command "namespace code" gets current namesp context} {
    namespace eval test_ns_inscope {
	namespace code {"1 2 3" "4 5" 6}
    }
} {::namespace inscope ::test_ns_inscope {"1 2 3" "4 5" 6}}
test namespace-old-10.5 {with one arg, first "scope" sticks} {
    set sval [namespace eval test_ns_inscope {namespace code {one two}}]
    namespace code $sval
} {::namespace inscope ::test_ns_inscope {one two}}
test namespace-old-10.6 {with many args, each "scope" adds new args} {
    set sval [namespace eval test_ns_inscope {namespace code {one two}}]
    namespace code "$sval three"
} {::namespace inscope ::test_ns_inscope {one two} three}
namespace eval test_ns_inscope {
    proc show {args} {
	return "show: $args"
    }
}
test namespace-old-10.7 {scoped commands work with eval} {
    set cref [namespace eval test_ns_inscope {namespace code show}]
    list [eval $cref "a" "b c" "d e f"]
} {{show: a b c d e f}}
namespace eval test_ns_inscope {
    variable x "x-value"
}
test namespace-old-10.8 {scoped commands execute in namespace context} {
    set cref [namespace eval test_ns_inscope {
	namespace code {set x "some new value"}
    }]
    list [set test_ns_inscope::x] [eval $cref] [set test_ns_inscope::x]
} {x-value {some new value} {some new value}}

foreach cmd [info commands test_ns_*] {
    rename $cmd ""
}
catch {rename cmd {}}
catch {rename cmd1 {}}
catch {rename cmd2 {}}
catch {rename ncmd {}}
catch {rename ncmd1 {}}
catch {rename ncmd2 {}}
catch {unset cref}
catch {unset trigger}
catch {unset trigger2}
catch {unset sval}
catch {unset msg}
catch {unset x}
catch {unset test_ns_var_global}
catch {unset cmd}
eval namespace delete [namespace children :: test_ns_*]

# cleanup
::tcltest::cleanupTests
return

# Local Variables:
# mode: tcl
# End:
