var.test

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# This file contains tests for the tclVar.c source file. Tests appear in
# the same order as the C code that they test. The set of tests is
# currently incomplete since it currently includes only new tests for
# code changed for the addition of Tcl namespaces. Other variable-
# related tests appear in several other test files including
# namespace.test, set.test, trace.test, and upvar.test.
#
# Sourcing this file into Tcl runs the tests and generates output for
# errors. No output means no errors were found.
#
# Copyright (c) 1997 Sun Microsystems, Inc.
# Copyright (c) 1998-1999 by Scriptics Corporation.
#
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
#
# RCS: @(#) $Id: var.test,v 1.20 2002/10/17 17:41:45 dgp Exp $
#

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest 2.2
    namespace import -force ::tcltest::*
}

catch {rename p ""}
catch {namespace delete test_ns_var}
catch {unset xx}
catch {unset x}
catch {unset y}
catch {unset i}
catch {unset a}
catch {unset arr}

test var-1.1 {TclLookupVar, Array handling} {
    catch {unset a}
    set x "incr"  ;# force no compilation and runtime call to Tcl_IncrCmd 
    set i 10
    set arr(foo) 37
    list [$x i] $i [$x arr(foo)] $arr(foo)
} {11 11 38 38}
test var-1.2 {TclLookupVar, TCL_GLOBAL_ONLY implies global namespace var} {
    set x "global value"
    namespace eval test_ns_var {
        variable x "namespace value"
        proc p {} {
            global x  ;# specifies TCL_GLOBAL_ONLY to get global x
            return $x
        }
    }
    test_ns_var::p
} {global value}
test var-1.3 {TclLookupVar, TCL_NAMESPACE_ONLY implies namespace var} {
    namespace eval test_ns_var {
        proc q {} {
            variable x  ;# specifies TCL_NAMESPACE_ONLY to get namespace x
            return $x
        }
    }
    test_ns_var::q
} {namespace value}
test var-1.4 {TclLookupVar, no active call frame implies global namespace var} {
    set x
} {global value}
test var-1.5 {TclLookupVar, active call frame pushed for namespace eval implies namespace var} {
    namespace eval test_ns_var {set x}
} {namespace value}
test var-1.6 {TclLookupVar, name starts with :: implies some namespace var} {
    namespace eval test_ns_var {set ::x}
} {global value}
test var-1.7 {TclLookupVar, error finding namespace var} {
    list [catch {set a:::b} msg] $msg
} {1 {can't read "a:::b": no such variable}}
test var-1.8 {TclLookupVar, error finding namespace var} {
    list [catch {set ::foobarfoo} msg] $msg
} {1 {can't read "::foobarfoo": no such variable}}
test var-1.9 {TclLookupVar, create new namespace var} {
    namespace eval test_ns_var {
        set v hello
    }
} {hello}
test var-1.10 {TclLookupVar, create new namespace var} {
    catch {unset y}
    namespace eval test_ns_var {
        set ::y 789
    }
    set y
} {789}
test var-1.11 {TclLookupVar, error creating new namespace var} {
    namespace eval test_ns_var {
        list [catch {set ::test_ns_var::foo::bar 314159} msg] $msg
    }
} {1 {can't set "::test_ns_var::foo::bar": parent namespace doesn't exist}}
test var-1.12 {TclLookupVar, error creating new namespace var} {
    namespace eval test_ns_var {
        list [catch {set ::test_ns_var::foo:: 1997} msg] $msg
    }
} {1 {can't set "::test_ns_var::foo::": parent namespace doesn't exist}}
test var-1.13 {TclLookupVar, new namespace var is created in a particular namespace} {
    catch {unset aNeWnAmEiNnS}
    namespace eval test_ns_var {
        namespace eval test_ns_var2::test_ns_var3 {
            set aNeWnAmEiNnS 77777
        }
        # namespace which builds a name by traversing nsPtr chain to ::
        namespace which -variable test_ns_var2::test_ns_var3::aNeWnAmEiNnS
    }
} {::test_ns_var::test_ns_var2::test_ns_var3::aNeWnAmEiNnS}
test var-1.14 {TclLookupVar, namespace code ignores ":"s in middle and end of var names} {
    namespace eval test_ns_var {
        set : 123
        set v: 456
        set x:y: 789
        list [set :] [set v:] [set x:y:] \
             ${:} ${v:} ${x:y:} \
             [expr {[lsearch [info vars] :] != -1}] \
             [expr {[lsearch [info vars] v:] != -1}] \
             [expr {[lsearch [info vars] x:y:] != -1}]
    }
} {123 456 789 123 456 789 1 1 1}
test var-1.15 {TclLookupVar, resurrect variable via upvar to deleted namespace: compiled code path} {
    namespace eval test_ns_var {
	variable foo 2
    }
    proc p {} {
	variable ::test_ns_var::foo
	lappend result [catch {set foo} msg] $msg
        namespace delete ::test_ns_var
	lappend result [catch {set foo 3} msg] $msg
	lappend result [catch {set foo(3) 3} msg] $msg
    }
    p
} {0 2 1 {can't set "foo": upvar refers to variable in deleted namespace} 1 {can't set "foo(3)": upvar refers to variable in deleted namespace}}
test var-1.16 {TclLookupVar, resurrect variable via upvar to deleted namespace: uncompiled code path} {
    namespace eval test_ns_var {
	variable result
        namespace eval subns {
	    variable foo 2
	}
	upvar 0 subns::foo foo
	lappend result [catch {set foo} msg] $msg
        namespace delete subns
	lappend result [catch {set foo 3} msg] $msg
	lappend result [catch {set foo(3) 3} msg] $msg
        namespace delete [namespace current]
	set result
    }
} {0 2 1 {can't set "foo": upvar refers to variable in deleted namespace} 1 {can't set "foo(3)": upvar refers to variable in deleted namespace}}
test var-1.17 {TclLookupVar, resurrect array element via upvar to deleted array: compiled code path} {
    namespace eval test_ns_var {
	variable result
	proc p {} {
	    array set x {1 2 3 4}
	    upvar 0 x(1) foo
	    lappend result [catch {set foo} msg] $msg
	    unset x
	    lappend result [catch {set foo 3} msg] $msg
	}
	set result [p]
        namespace delete [namespace current]
	set result
    }
} {0 2 1 {can't set "foo": upvar refers to element in deleted array}}
test var-1.18 {TclLookupVar, resurrect array element via upvar to deleted array: uncompiled code path} {
    namespace eval test_ns_var {
	variable result {}
	variable x
	array set x {1 2 3 4}
	upvar 0 x(1) foo
	lappend result [catch {set foo} msg] $msg
	unset x
	lappend result [catch {set foo 3} msg] $msg
        namespace delete [namespace current]
	set result
    }
} {0 2 1 {can't set "foo": upvar refers to element in deleted array}}
test var-1.19 {TclLookupVar, right error message when parsing variable name} {
    list [catch {[format set] thisvar(doesntexist)} msg] $msg
} {1 {can't read "thisvar(doesntexist)": no such variable}}

test var-2.1 {Tcl_LappendObjCmd, create var if new} {
    catch {unset x}
    lappend x 1 2
} {1 2}

test var-3.1 {MakeUpvar, TCL_NAMESPACE_ONLY not specified for other var} {
    catch {unset x}
    set x 1997
    proc p {} {
        global x  ;# calls MakeUpvar with TCL_NAMESPACE_ONLY for other var x
        return $x
    }
    p
} {1997}
test var-3.2 {MakeUpvar, other var has TCL_NAMESPACE_ONLY specified} {
    namespace eval test_ns_var {
        catch {unset v}
        variable v 1998
        proc p {} {
            variable v  ;# TCL_NAMESPACE_ONLY specified for other var x
            return $v
        }
        p
    }
} {1998}
if {[info commands testupvar] != {}} {
    test var-3.3 {MakeUpvar, my var has TCL_GLOBAL_ONLY specified} {
        catch {unset a}
        set a 123321
        proc p {} {
            # create global xx linked to global a
	    testupvar 1 a {} xx global 
	}
        list [p] $xx [set xx 789] $a
    } {{} 123321 789 789}
    test var-3.4 {MakeUpvar, my var has TCL_NAMESPACE_ONLY specified} {
        catch {unset a}
        set a 456
        namespace eval test_ns_var {
            catch {unset ::test_ns_var::vv}
            proc p {} {
                # create namespace var vv linked to global a
	        testupvar 1 a {} vv namespace 
	    }
            p
        }
        list $test_ns_var::vv [set test_ns_var::vv 123] $a
    } {456 123 123}
}
test var-3.5 {MakeUpvar, no call frame so my var will be in global :: ns} {
    catch {unset aaaaa}
    catch {unset xxxxx}
    set aaaaa 77777
    upvar #0 aaaaa xxxxx
    list [set xxxxx] [set aaaaa]
} {77777 77777}
test var-3.6 {MakeUpvar, active call frame pushed for namespace eval} {
    catch {unset a}
    set a 121212
    namespace eval test_ns_var {
        upvar ::a vvv
        set vvv
    }
} {121212}
test var-3.7 {MakeUpvar, my var has ::s} {
    catch {unset a}
    set a 789789
    upvar #0 a test_ns_var::lnk
    namespace eval test_ns_var {
        set lnk
    }
} {789789}
test var-3.8 {MakeUpvar, my var already exists in global ns} {
    catch {unset aaaaa}
    catch {unset xxxxx}
    set aaaaa 456654
    set xxxxx hello
    upvar #0 aaaaa xxxxx
    set xxxxx
} {hello}
test var-3.9 {MakeUpvar, my var has invalid ns name} {
    catch {unset aaaaa}
    set aaaaa 789789
    list [catch {upvar #0 aaaaa test_ns_fred::lnk} msg] $msg
} {1 {can't create "test_ns_fred::lnk": parent namespace doesn't exist}}

if {[info commands testgetvarfullname] != {}} {
    test var-4.1 {Tcl_GetVariableName, global variable} {
        catch {unset a}
        set a 123
        testgetvarfullname a global
    } ::a
    test var-4.2 {Tcl_GetVariableName, namespace variable} {
        namespace eval test_ns_var {
            variable george
            testgetvarfullname george namespace
        }
    } ::test_ns_var::george
    test var-4.3 {Tcl_GetVariableName, variable can't be array element} {
        catch {unset a}
        set a(1) foo
        list [catch {testgetvarfullname a(1) global} msg] $msg
    } {1 {unknown variable "a(1)"}}
}

test var-5.1 {Tcl_GetVariableFullName, global variable} {
    catch {unset a}
    set a bar
    namespace which -variable a
} {::a}
test var-5.2 {Tcl_GetVariableFullName, namespace variable} {
    namespace eval test_ns_var {
        variable martha
        namespace which -variable martha
    }
} {::test_ns_var::martha}
test var-5.3 {Tcl_GetVariableFullName, namespace variable} {
    namespace which -variable test_ns_var::martha
} {::test_ns_var::martha}

test var-6.1 {Tcl_GlobalObjCmd, variable is qualified by a namespace name} {
    namespace eval test_ns_var {
        variable boeing 777
    }
    proc p {} {
        global ::test_ns_var::boeing
        set boeing
    }
    p
} {777}
test var-6.2 {Tcl_GlobalObjCmd, variable is qualified by a namespace name} {
    namespace eval test_ns_var {
        namespace eval test_ns_nested {
            variable java java
        }
        proc p {} {
            global ::test_ns_var::test_ns_nested::java
            set java
        }
    }
    test_ns_var::p
} {java}
test var-6.3 {Tcl_GlobalObjCmd, variable named {} qualified by a namespace name} {
    set ::test_ns_var::test_ns_nested:: 24
    proc p {} {
        global ::test_ns_var::test_ns_nested::
        set {}
    }
    p
} {24}
test var-6.4 {Tcl_GlobalObjCmd, variable name matching :*} {
    # Test for Tcl Bug 480176
    set :v broken
    proc p {} {
	global :v
	set :v fixed
    }
    p
    set :v
} {fixed}

test var-7.1 {Tcl_VariableObjCmd, create and initialize one new ns variable} {
    catch {namespace delete test_ns_var}
    namespace eval test_ns_var {
        variable one 1
    }
    list [info vars test_ns_var::*] [set test_ns_var::one]