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[/] [or1k/] [trunk/] [insight/] [itcl/] [itcl/] [tests/] [old/] [inherit.test] - Blame information for rev 1765

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1 578 markom 
#
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# Tests for inheritance and scope handling
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# ----------------------------------------------------------------------
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#   AUTHOR:  Michael J. McLennan
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#            Bell Labs Innovations for Lucent Technologies
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#            mmclennan@lucent.com
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#            http://www.tcltk.com/itcl
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#
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#      RCS:  $Id: inherit.test,v 1.1.1.1 2002-01-16 10:24:47 markom Exp $
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# ----------------------------------------------------------------------
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#            Copyright (c) 1993-1998  Lucent Technologies, Inc.
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# ======================================================================
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# See the file "license.terms" for information on usage and
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# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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# ----------------------------------------------------------------------
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#  MULTIPLE BASE-CLASS ERROR DETECTION
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# ----------------------------------------------------------------------
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test {Cannot inherit from the same base class more than once} {
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        catch "VirtualErr" errmsg
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        set errmsg
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} {
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        [string match {*class "::VirtualErr" inherits base class "::Foo" more than once:
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  VirtualErr->Mongrel->FooBar->Foo
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  VirtualErr->Foo
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  VirtualErr->BarFoo->Foo} $result]
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}
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# ----------------------------------------------------------------------
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#  CONSTRUCTION
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# ----------------------------------------------------------------------
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test {Constructors should be invoked implicitly} {
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        set WATCH ""
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        concat [Mongrel m] / $WATCH
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} {
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        $result == "m / ::Geek ::Bar ::Foo ::FooBar ::Mongrel"
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}
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test {Initialization of shadowed variables works properly} {
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        concat [m info public blit -value] / [m info public Foo::blit -value]
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} {
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        $result == "nonnull / "
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}
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# ----------------------------------------------------------------------
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#  PUBLIC VARIABLES
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# ----------------------------------------------------------------------
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test {Inherited "config" method works on derived classes} {
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        m config -blit xyz -Foo::blit pdq
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} {
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        $result == "Mongrel::blit Foo::blit"
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}
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test {Inherited "config" method works on derived classes} {
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        m config -blit xyz -Foo::blit pdq
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        concat [m info public blit -value] / [m info public Foo::blit -value]
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} {
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        $result == "xyz / pdq"
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}
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test {Inherited "config" method works on derived classes} {
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        m config -tag #0000
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} {
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        $result == "Mongrel::tag"
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}
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# ----------------------------------------------------------------------
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#  INHERITANCE INFO
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# ----------------------------------------------------------------------
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test {Info: class} {
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        m info class
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} {
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        $result == "::Mongrel"
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}
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test {Info: inherit} {
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        m info inherit
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} {
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        $result == "::FooBar ::Geek"
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}
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test {Info: heritage} {
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        m info heritage
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} {
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        $result == "::Mongrel ::FooBar ::Foo ::Bar ::Geek"
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}
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test {Built-in "isa" method} {
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        set status 1
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        foreach c [m info heritage] {
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                set status [expr {$status && [m isa $c]}]
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        }
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        set status
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} {
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        $result == 1
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}
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test {Built-in "isa" method} {
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    itcl_class Watermelon {}
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        m isa Watermelon
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} {
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        $result == 0
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}
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# ----------------------------------------------------------------------
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#  SCOPE MANIPULATION
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# ----------------------------------------------------------------------
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test {commands normally execute in the scope of their class} {
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        m Foo::do {namespace current}
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} {
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        $result == "Foo says '::Foo'"
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}
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test {"virtual" command moves scope to most specific class} {
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        m Foo::do {virtual namespace current}
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} {
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        $result == "Foo says '::Mongrel'"
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}
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test {"previous" command moves scope upward in hierarchy} {
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        m do {virtual previous namespace current}
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} {
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        $result == "Foo says '::FooBar'"
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}
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test {"previous" command can be chained} {
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        m do {virtual previous previous namespace current}
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} {
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        $result == "Foo says '::Foo'"
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}
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# ----------------------------------------------------------------------
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#  METHOD INVOCATION
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# ----------------------------------------------------------------------
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test {Simple method names are assigned based on heritage} {
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        m do {concat "$this ([virtual info class]) at scope [namespace current]"}
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} {
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        $result == "Foo says '::m (Mongrel) at scope ::Foo'"
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}
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test {Explicit scoping can be used to reach shadowed members} {
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        m Geek::do {concat "$this ([virtual info class]) at scope [namespace current]"}
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} {
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        $result == "Geek says '::m (Mongrel) at scope ::Geek'"
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}
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test {Methods execute in local scope of class, e.g., Foo::do} {
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        m config -blit abc -Foo::blit def
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        m Foo::do {set blit xyz}
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        concat [m info public blit -value] / [m info public Foo::blit -value]
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} {
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        $result == "abc / xyz"
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}
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# ----------------------------------------------------------------------
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#  DESTRUCTION
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# ----------------------------------------------------------------------
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test {Destructors should be invoked implicitly} {
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        set WATCH ""
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        concat [m delete] / $WATCH
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} {
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        $result == "/ ::Mongrel ::FooBar ::Foo ::Bar ::Geek"
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}
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# ----------------------------------------------------------------------
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#  OBJECT INFO
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# ----------------------------------------------------------------------
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foreach obj [itcl_info objects] {
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        $obj delete
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}
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Mongrel m
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FooBar fb
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Foo f
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Geek g
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test {Object queries can be restricted by object name} {
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        itcl_info objects f*
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} {
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        [test_cmp_lists $result {f fb}]
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}
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test {Object queries can be restricted to specific classes} {
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        itcl_info objects -class Foo
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} {
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        $result == "f"
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}
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test {Object queries can be restricted by object heritage} {
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        itcl_info objects -isa Foo
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} {
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        [test_cmp_lists $result {m f fb}]
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}
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test {Object queries can be restricted by object name / specific classes} {
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        itcl_info objects f* -class Foo
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} {
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        $result == "f"
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}
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test {Object queries can be restricted by object name / object heritage} {
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        itcl_info objects f* -isa Foo
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} {
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        [test_cmp_lists $result {f fb}]
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}
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# ----------------------------------------------------------------------
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#  ERROR HANDLING ACROSS CLASS BOUNDARIES
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# ----------------------------------------------------------------------
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Mongrel m1
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FooBar fb2
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test {Errors and detected and reported across class boundaries} {
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        set status [catch {m1 do {fb2 do {error "test"}}} mesg]
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        format "$mesg $status"
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} {
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        $result == "test 1"
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}
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test {Stack trace unwinds properly across class boundaries} {
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        catch {m1 do {fb2 do {error "test"}}} mesg
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        format "$errorInfo"
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} {
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        $result == {test
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    while executing
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"error "test""
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    ("eval" body line 1)
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    invoked from within
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"eval $cmds"
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    invoked from within
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"return "Foo says '[eval $cmds]..."
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    (object "::fb2" method "::Foo::do" body line 2)
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    invoked from within
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"fb2 do {error "test"}"
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    ("eval" body line 1)
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    invoked from within
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"eval $cmds"
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    invoked from within
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"return "Foo says '[eval $cmds]..."
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    (object "::m1" method "::Foo::do" body line 2)
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    invoked from within
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"m1 do {fb2 do {error "test"}}"}
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}
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test {Stack trace unwinds properly across class boundaries} {
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        catch {m1 do {fb2 do {error "test" "some error"}}} mesg
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        format "$errorInfo"
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} {
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        $result == {some error
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    ("eval" body line 1)
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    invoked from within
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"eval $cmds"
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    invoked from within
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"return "Foo says '[eval $cmds]..."
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    (object "::fb2" method "::Foo::do" body line 2)
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    invoked from within
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"fb2 do {error "test" "some error"}"
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    ("eval" body line 1)
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    invoked from within
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"eval $cmds"
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    invoked from within
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"return "Foo says '[eval $cmds]..."
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    (object "::m1" method "::Foo::do" body line 2)
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    invoked from within
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"m1 do {fb2 do {error "test" "some error"}}"}
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}
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test {Error codes are preserved across class boundaries} {
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        catch {m1 do {fb2 do {error "test" "some error" CODE-BLUE}}} mesg
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        format "$errorCode"
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} {
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        $result == "CODE-BLUE"
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}

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