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# This file tests the tclWinTime.c file.
#
# This file contains a collection of tests for one or more of the Tcl
# built-in commands. 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: winTime.test,v 1.7 2003/02/14 22:16:27 kennykb Exp $
if {[lsearch [namespace children] ::tcltest] == -1} {
package require tcltest
namespace import -force ::tcltest::*
}
testConstraint testwinclock [llength [info commands testwinclock]]
# The next two tests will crash on Windows if the check for negative
# clock values is not done properly.
test winTime-1.1 {TclpGetDate} {pcOnly} {
set ::env(TZ) JST-9
set result [clock format -1 -format %Y]
unset ::env(TZ)
set result
} {1970}
test winTime-1.2 {TclpGetDate} {pcOnly} {
set ::env(TZ) PST8
set result [clock format 1 -format %Y]
unset ::env(TZ)
set result
} {1969}
# Next test tries to make sure that the Tcl clock stays in step
# with the Windows clock. 3000 iterations really isn't enough,
# but how many does a tester have patience for?
test winTime-2.1 {Synchronization of Tcl and Windows clocks} {testwinclock} {
set failed {}
set ok 1
for { set i 0 } { $i < 3000 } { incr i } {
foreach { sys_sec sys_usec tcl_sec tcl_usec } [testwinclock] {}
set diff [expr { $tcl_sec - $sys_sec
+ 1.0e-6 * ( $tcl_usec - $sys_usec ) }]
if { abs($diff) > 0.02 } {
set failed "Tcl clock differs from system clock by $diff sec"
break
} else {
after 10
}
}
set failed
} {}
# cleanup
::tcltest::cleanupTests
return
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