itcl/tests/basic.test

#
# Basic tests for class definition and method/proc access
# ----------------------------------------------------------------------
#   AUTHOR:  Michael J. McLennan
#            Bell Labs Innovations for Lucent Technologies
#            mmclennan@lucent.com
#            http://www.tcltk.com/itcl
#
#      RCS:  $Id: basic.test,v 1.12 2007/07/03 20:46:44 hobbs Exp $
# ----------------------------------------------------------------------
#            Copyright (c) 1993-1998  Lucent Technologies, Inc.
# ======================================================================
# See the file "license.terms" for information on usage and
# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest 2.1
    namespace import -force ::tcltest::test
}

::tcltest::loadTestedCommands

test basic-1.0 {empty string as class name should fail but not crash} {
    list [catch {itcl::class "" {}} err] $err
} {1 {invalid class name ""}}

# ----------------------------------------------------------------------
#  Simple class definition
# ----------------------------------------------------------------------
test basic-1.1 {define a simple class} {
    itcl::class Counter {
        constructor {args} {
            incr num
            eval configure $args
        }
        destructor {
            incr num -1
        }

        method ++ {} {
            return [incr val $by]
        }
        proc num {} {
            return $num
        }
        public variable by 1
        protected variable val 0
        private common num 0
    }
} ""

test basic-1.2 {class is now defined} {
    itcl::find classes Counter
} {Counter}

test basic-1.3 {access command exists with class name} {
    namespace which -command Counter
} {::Counter}

test basic-1.4 {create a simple object} {
    Counter x
} {x}

test basic-1.5a {object names cannot be duplicated} {
    list [catch "Counter x" msg] $msg
} {1 {command "x" already exists in namespace "::"}}

test basic-1.5b {built-in commands cannot be clobbered} {
    list [catch "Counter info" msg] $msg
} {1 {command "info" already exists in namespace "::"}}

test basic-1.6 {objects have an access command} {
    namespace which -command x
} {::x}

test basic-1.7a {objects are added to the master list} {
    itcl::find objects x
} {x}

test basic-1.7b {objects are added to the master list} {
    itcl::find objects -class Counter x
} {x}

test basic-1.8 {objects can be deleted} {
    list [itcl::delete object x] [namespace which -command x]
} {{} {}}

test basic-1.9 {objects can be recreated with the same name} {
    Counter x
} {x}

test basic-1.10 {objects can be destroyed by deleting their access command} {
    rename ::x ""
    itcl::find objects x
} {}

test basic-1.11 {find command supports object names starting with -} {
    Counter -foo
    itcl::find objects -class Counter -foo
} {-foo}
test basic-1.12 {is command with class argument} {
    itcl::is class Counter
} {1}

test basic-1.13 {is command with class argument (global namespace)} {
    itcl::is class ::Counter
} {1}

test basic-1.14 {is command with class argument (wrapped in code command)} {
    itcl::is class [itcl::code Counter]
} {1}

test basic-1.15 {is command with class argument (class does not exist)} {
    itcl::is class Count
} {0}

test basic-1.16 {is command with object argument} {
    itcl::is object -foo
} {1}

test basic-1.17 {is command with object argument (object does not exist)} {
    itcl::is object xxx
} {0}

test basic-1.18 {is command with object argument (with code command)} {
    itcl::is object [itcl::code -- -foo]
} {1}

test basic-1.19 {classes can be unicode} {
    itcl::class \u6210bcd { method foo args { return "bar" } }
    \u6210bcd #auto
} \u6210bcd0
test basic-1.20 {classes can be unicode} {
    \u6210bcd0 foo
} bar

# ----------------------------------------------------------------------
#  #auto names
# ----------------------------------------------------------------------
test basic-2.1 {create an object with an automatic name} {
    Counter #auto
} {counter0}

test basic-2.2 {bury "#auto" within object name} {
    Counter x#autoy
} {xcounter1y}

test basic-2.3 {bury "#auto" within object name} {
    Counter a#aut#autob
} {a#autcounter2b}

test basic-2.4 {"#auto" is smart enough to skip names that are taken} {
    Counter counter3
    Counter #auto
} {counter4}

test basic-2.5 {"#auto" with :: at front of name} {
    itcl::class AutoCheck {}
    set result [AutoCheck ::#auto]
    rename AutoCheck {}
    set result
} {::autoCheck0}

test basic-2.6 {"#auto" with :: at front of name inside method} {
    itcl::class AutoCheck {
        proc new {} {
            return [AutoCheck ::#auto]
        }
    }
    set result [AutoCheck::new]
    rename AutoCheck {}
    set result
} {::autoCheck0}

test basic-2.7 {"#auto" with :: at front of name inside method inside namespace} {
    namespace eval AutoCheckNs {}
    itcl::class AutoCheckNs::AutoCheck {
        proc new {} {
            return [AutoCheckNs::AutoCheck ::#auto]
        }
    }
    set result [AutoCheckNs::AutoCheck::new]
    namespace delete AutoCheckNs
    set result
} {::autoCheck0}

# ----------------------------------------------------------------------
#  Simple object use
# ----------------------------------------------------------------------
test basic-3.1 {object access command works} {
    Counter c
    list [c ++] [c ++] [c ++]
} {1 2 3}

test basic-3.2 {errors produce usage info} {
    list [catch "c xyzzy" msg] $msg
} {1 {bad option "xyzzy": should be one of...
  c ++
  c cget -option
  c configure ?-option? ?value -option value...?
  c isa className}}

test basic-3.3 {built-in configure can query public variables} {
    c configure
} {{-by 1 1}}

test basic-3.4 {built-in configure can query one public variable} {
    c configure -by
} {-by 1 1}

test basic-3.5 {built-in configure can set public variable} {
    list [c configure -by 2] [c cget -by]
} {{} 2}

test basic-3.6 {configure actually changes public variable} {
    list [c ++] [c ++]
} {5 7}

test basic-3.7 {class procs can be accessed} {
    Counter::num
} {7}

test basic-3.8 {obsolete syntax is no longer allowed} {
    list [catch "Counter :: num" msg] $msg
} {1 {syntax "class :: proc" is an anachronism
[incr Tcl] no longer supports this syntax.
Instead, remove the spaces from your procedure invocations:
  Counter::num ?args?}}

# ----------------------------------------------------------------------
#  Classes can be destroyed and redefined
# ----------------------------------------------------------------------
test basic-4.1 {classes can be destroyed} {
    list [itcl::delete class Counter] \
         [itcl::find classes Counter] \
         [namespace children :: Counter] \
         [namespace which -command Counter]
} {{} {} {} {}}

test basic-4.2 {classes can be redefined} {
    itcl::class Counter {
        method ++ {} {
            return [incr val $by]
        }
        public variable by 1
        protected variable val 0
    }
} {}

test basic-4.3 {the redefined class is actually different} {
    list [catch "Counter::num" msg] $msg
} {1 {invalid command name "Counter::num"}}

test basic-4.4 {objects can be created from the new class} {
    list [Counter #auto] [Counter #auto]
} {counter0 counter1}

test basic-4.5 {namespaces for #auto are prepended to the command name} {
    namespace eval someNS1 {}
    namespace eval someNS2 {}
    list [Counter someNS1::#auto] [Counter someNS2::#auto]
} [list someNS1::counter2 someNS2::counter3]

test basic-4.6 {when a class is destroyed, its objects are deleted} {
    list [lsort [itcl::find objects counter*]] \
         [itcl::delete class Counter] \
         [lsort [itcl::find objects counter*]]
} {{counter0 counter1} {} {}}

# ----------------------------------------------------------------------
#  Namespace variables
# ----------------------------------------------------------------------
test basic-5.1 {define a simple class with variables in the namespace} {
    itcl::class test_globals {
        common g1 "global1"
        proc getval {name} {
            variable $name
            return [set [namespace tail $name]]
        }
        proc setval {name val} {
            variable $name
            return [set [namespace tail $name] $val]
        }
        method do {args} {
            return [eval $args]
        }
    }
    namespace eval test_globals {
        variable g2 "global2"
    }
} ""

test basic-5.2 {create an object for the tests} {
    test_globals #auto
} {test_globals0}

test basic-5.3 {common variables live in the namespace} {
    lsort [info vars ::test_globals::*]
} {::test_globals::g1 ::test_globals::g2}

test basic-5.4 {common variables can be referenced transparently} {
    list [catch {test_globals0 do set g1} msg] $msg
} {0 global1}

test basic-5.5 {namespace variables require a declaration} {
    list [catch {test_globals0 do set g2} msg] $msg
} {1 {can't read "g2": no such variable}}

test basic-5.6a {variable accesses variables within namespace} {
    list [catch {test_globals::getval g1} msg] $msg
} {0 global1}

test basic-5.6a {variable accesses variables within namespace} {
    list [catch {test_globals::getval g2} msg] $msg
} {0 global2}

test basic-5.7 {variable command will not find vars in other namespaces} {
    set ::test_global_0 "g0"
    list [catch {test_globals::getval test_global_0} msg] $msg \
         [catch {test_globals::getval ::test_global_0} msg] $msg \
} {1 {can't read "test_global_0": no such variable} 0 g0}

test basic-5.8 {to create globals in a namespace, use the full path} {
    test_globals::setval ::test_global_1 g1
    namespace eval :: {lsort [info globals test_global_*]}
} {test_global_0 test_global_1}

test basic-5.9 {variable names can have ":" in them} {
    test_globals::setval ::test:global:2 g2
    namespace eval :: {info globals test:global:2}
} {test:global:2}

# ----------------------------------------------------------------------
#  Array variables
# ----------------------------------------------------------------------
test basic-6.1 {set up a class definition with array variables} {
    proc test_arrays_get {name} {
        upvar $name x
        set rlist {}
        foreach index [lsort [array names x]] {
            lappend rlist [list $index $x($index)]
        }
        return $rlist
    }
    itcl::class test_arrays {
        variable nums
        common undefined

        common colors
        set colors(red)   #ff0000
        set colors(green) #00ff00
        set colors(blue)  #0000ff

        constructor {} {
            set nums(one) 1
            set nums(two) 2
            set nums(three) 3

            set undefined(a) A
            set undefined(b) B
        }
        method do {args} {
            return [eval $args]
        }
    }
    test_arrays #auto
} {test_arrays0}

test basic-6.2 {test array access for instance variables} {
    lsort [test_arrays0 do array get nums]
} {1 2 3 one three two}

test basic-6.3 {test array access for commons} {
    lsort [test_arrays0 do array get colors]
} [list #0000ff #00ff00 #ff0000 blue green red]

test basic-6.4 {test array access for instance variables via "upvar"} {
    test_arrays0 do test_arrays_get nums
} {{one 1} {three 3} {two 2}}

test basic-6.5 {test array access for commons via "upvar"} {
    test_arrays0 do test_arrays_get colors
} {{blue #0000ff} {green #00ff00} {red #ff0000}}

test basic-6.6a {test array access for commons defined in constructor} {
    lsort [test_arrays0 do array get undefined]
} {A B a b}

test basic-6.6b {test array access for commons defined in constructor} {
    test_arrays0 do test_arrays_get undefined
} {{a A} {b B}}

test basic-6.6c {test array access for commons defined in constructor} {
    list [test_arrays0 do set undefined(a)] [test_arrays0 do set undefined(b)]
} {A B}

test basic-6.7 {common variables can be unset} {
    test_arrays0 do unset undefined
    test_arrays0 do array names undefined
} {}

test basic-6.8 {common variables can be redefined} {
    test_arrays0 do set undefined "scalar"
} {scalar}

::tcltest::cleanupTests
return