archie/tk4.2/tests/defs
2024-05-27 16:40:40 +02:00

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# This file contains support code for the Tcl test suite. It is
# normally sourced by the individual files in the test suite before
# they run their tests. This improved approach to testing was designed
# and initially implemented by Mary Ann May-Pumphrey of Sun Microsystems.
#
# Copyright (c) 1994-1996 Sun Microsystems, Inc.
#
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
#
# SCCS: @(#) defs 1.28 96/09/05 14:08:14
if ![info exists VERBOSE] {
set VERBOSE 0
}
if ![info exists TESTS] {
set TESTS {}
}
tk appname tktest
wm title . tktest
# Check configuration information that will determine which tests
# to run. To do this, create an array testConfig. Each element
# has a 0 or 1 value, and the following elements are defined:
# unixOnly - 1 means this is a UNIX platform, so it's OK
# to run tests that only work under UNIX.
# macOnly - 1 means this is a Mac platform, so it's OK
# to run tests that only work on Macs.
# pcOnly - 1 means this is a PC platform, so it's OK to
# run tests that only work on PCs.
# nonPortable - 1 means this the tests are being running in
# the master Tcl/Tk development environment;
# Some tests are inherently non-portable because
# they depend on things like word length, file system
# configuration, window manager, etc. These tests
# are only run in the main Tcl development directory
# where the configuration is well known. The presence
# of the file "doAllTests" in this directory indicates
# that it is safe to run non-portable tests.
# fonts - 1 means that this platform uses fonts with
# well-know geometries, so it is safe to run
# tests that depend on particular font sizes.
catch {unset testConfig}
if {$tcl_platform(platform) == "unix"} {
set testConfig(unixOnly) 1
} else {
set testConfig(unixOnly) 0
}
if {$tcl_platform(platform) == "macintosh"} {
set testConfig(macOnly) 1
} else {
set testConfig(macOnly) 0
}
if {$tcl_platform(platform) == "windows"} {
set testConfig(pcOnly) 1
} else {
set testConfig(pcOnly) 0
}
set testConfig(nonPortable) [file exists doAllTests]
set testConfig(fonts) 1
catch {destroy .e}
entry .e -width 0
.e insert end "a.bcd"
if {([winfo reqwidth .e] != 41) || ([winfo reqheight .e] != 24)} {
set testConfig(fonts) 0
}
destroy .e
catch {destroy .t}
if [catch {text .t -width 80 -height 20 -font \
-adobe-times-medium-r-normal--14-140-75-75-p-*-iso8859-1}] {
set testConfig(fonts) 0
} else {
pack .t
.t insert end "This is\na dot."
update
set x [list [.t bbox 1.3] [.t bbox 2.5]]
destroy .t
if {[string compare $x "{24 5 6 15} {33 20 3 15}"] != 0} {
set testConfig(fonts) 0
}
}
# If there is no "memory" command (because memory debugging isn't
# enabled), generate a dummy command that does nothing.
if {[info commands memory] == ""} {
proc memory args {}
}
proc print_verbose {name description script code answer} {
puts stdout "\n"
puts stdout "==== $name $description"
puts stdout "==== Contents of test case:"
puts stdout "$script"
if {$code != 0} {
if {$code == 1} {
puts stdout "==== Test generated error:"
puts stdout $answer
} elseif {$code == 2} {
puts stdout "==== Test generated return exception; result was:"
puts stdout $answer
} elseif {$code == 3} {
puts stdout "==== Test generated break exception"
} elseif {$code == 4} {
puts stdout "==== Test generated continue exception"
} else {
puts stdout "==== Test generated exception $code; message was:"
puts stdout $answer
}
} else {
puts stdout "==== Result was:"
puts stdout "$answer"
}
}
# test --
# This procedure runs a test and prints an error message if the
# test fails. If VERBOSE has been set, it also prints a message
# even if the test succeeds. The test will be skipped if it
# doesn't match the TESTS variable, or if one of the elements
# of "constraints" turns out not to be true.
#
# Arguments:
# name - Name of test, in the form foo-1.2.
# description - Short textual description of the test, to
# help humans understand what it does.
# constraints - A list of one or more keywords, each of
# which must be the name of an element in
# the array "testConfig". If any of these
# elements is zero, the test is skipped.
# This argument may be omitted.
# script - Script to run to carry out the test. It must
# return a result that can be checked for
# correctness.
# answer - Expected result from script.
proc test {name description script answer args} {
global VERBOSE TESTS testConfig
if {[string compare $TESTS ""] != 0} then {
set ok 0
foreach test $TESTS {
if [string match $test $name] then {
set ok 1
break
}
}
if !$ok then return
}
set i [llength $args]
if {$i == 0} {
# Empty body
} elseif {$i == 1} {
# "constraints" argument exists; shuffle arguments down, then
# make sure that the constraints are satisfied.
set constraints $script
set script $answer
set answer [lindex $args 0]
foreach constraint $constraints {
if {![info exists testConfig($constraint)]
|| !$testConfig($constraint)} {
return
}
}
} else {
error "wrong # args: must be \"test name description ?constraints? script answer\""
}
memory tag $name
set code [catch {uplevel $script} result]
if {$code != 0} {
print_verbose $name $description $script \
$code $result
} elseif {[string compare $result $answer] == 0} then {
if $VERBOSE then {
print_verbose $name $description $script \
$code $result
puts stdout "++++ $name PASSED"
}
} else {
print_verbose $name $description $script \
$code $result
puts stdout "---- Result should have been:"
puts stdout "$answer"
puts stdout "---- $name FAILED"
}
}
proc dotests {file args} {
global TESTS
set savedTests $TESTS
set TESTS $args
source $file
set TESTS $savedTests
}
# If the main window isn't already mapped (e.g. because the tests are
# being run automatically) , specify a precise size for it so that the
# user won't have to position it manually.
if {![winfo ismapped .]} {
wm geometry . +0+0
update
}
# The following code can be used to perform tests involving a second
# process running in the background.
# Locate tktest executable
set tktest [list [info nameofexecutable]]
if {$tktest == "{}"} {
set tktest {}
puts "Unable to find tktest executable, skipping multiple process tests."
}
# Create background process
proc setupbg {{args ""}} {
global tktest fd bgData
if {$tktest == ""} {
error "you're not running tktest so setupbg should not have been called"
}
if {[info exists fd] && ($fd != "")} {
cleanupbg
}
set fd [open "|$tktest -geometry +0+0 -name tktest $args" r+]
puts $fd "puts foo; flush stdout"
flush $fd
if {[gets $fd data] < 0} {
error "unexpected EOF from \"$tktest\""
}
if [string compare $data foo] {
error "unexpected output from background process \"$data\""
}
fileevent $fd readable bgReady
}
# Send a command to the background process, catching errors and
# flushing I/O channels
proc dobg {command} {
global fd bgData bgDone
puts $fd "catch [list $command] msg; update; puts \$msg; puts **DONE**; flush stdout"
flush $fd
set bgDone 0
set bgData {}
tkwait variable bgDone
set bgData
}
# Data arrived from background process. Check for special marker
# indicating end of data for this command, and make data available
# to dobg procedure.
proc bgReady {} {
global fd bgData bgDone
set x [gets $fd]
if [eof $fd] {
fileevent $fd readable {}
set bgDone 1
} elseif {$x == "**DONE**"} {
set bgDone 1
} else {
append bgData $x
}
}
# Exit the background process, and close the pipes
proc cleanupbg {} {
global fd
catch {
puts $fd "exit"
close $fd
}
set fd ""
}
proc makeFile {contents name} {
set fd [open $name w]
fconfigure $fd -translation lf
if {[string index $contents [expr [string length $contents] - 1]] == "\n"} {
puts -nonewline $fd $contents
} else {
puts $fd $contents
}
close $fd
}
proc removeFile {name} {
global tcl_platform
if {$tcl_platform(platform) == "macintosh"} {
catch {rm $name}
} else {
catch {exec rm -f $name}
}
}