# This file contains tests for tclUnixNotfy.c.
#
# 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 by 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: unixNotfy.test,v 1.11.2.1 2003/09/04 17:50:41 dgp Exp $

# The tests should not be run if you have a notifier which is unable to
# detect infinite vwaits, as the tests below will hang. The presence of
# the "testthread" command indicates that this is the case.

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

if {[info exists tk_version]} {
    puts "When run in a Tk shell, these tests run hang.  Skipping tests ..."
    ::tcltest::cleanupTests
    return
}

set ::tcltest::testConstraints(testthread) \
	[expr {[info commands testthread] != {}}]

# The next two tests will hang if threads are enabled because the notifier
# will not necessarily wait for ever in this case, so it does not generate
# an error.

test unixNotfy-1.1 {Tcl_DeleteFileHandler} \
    -constraints {unixOnly && !testthread} \
    -body {
	catch {vwait x}
	set f [open [makeFile "" foo] w]
	fileevent $f writable {set x 1}
	vwait x
	close $f
	list [catch {vwait x} msg] $msg
    } \
    -result {1 {can't wait for variable "x":  would wait forever}} \
    -cleanup { 
	catch { close $f }
	catch { removeFile foo }
    }

test unixNotfy-1.2 {Tcl_DeleteFileHandler} \
    -constraints {unixOnly && !testthread} \
    -body {
	catch {vwait x}
	set f1 [open [makeFile "" foo] w]
	set f2 [open [makeFile "" foo2] w]
	fileevent $f1 writable {set x 1}
	fileevent $f2 writable {set y 1}
	vwait x
	close $f1
	vwait y
	close $f2
	list [catch {vwait x} msg] $msg
    } \
    -result {1 {can't wait for variable "x":  would wait forever}} \
    -cleanup {
	catch { close $f1 }
	catch { close $f2 }
	catch { removeFile foo }
	catch { removeFile foo2 }
    }

test unixNotfy-2.1 {Tcl_DeleteFileHandler} \
    -constraints {unixOnly testthread} \
    -body {
	update
	set f [open [makeFile "" foo] w]
	fileevent $f writable {set x 1}
	vwait x
	close $f
	testthread create "after 500
    testthread send [testthread id] {set x ok}
    testthread exit"
	vwait x
	set x
    } \
    -result {ok} \
    -cleanup {
	catch { close $f }
	catch { removeFile foo }
    }

test unixNotfy-2.2 {Tcl_DeleteFileHandler} \
    -constraints {unixOnly testthread} \
    -body {
	update
	set f1 [open [makeFile "" foo] w]
	set f2 [open [makeFile "" foo2] w]
	fileevent $f1 writable {set x 1}
	fileevent $f2 writable {set y 1}
	vwait x
	close $f1
	vwait y
	close $f2
	testthread create "after 500
            testthread send [testthread id] {set x ok}
            testthread exit"
        vwait x
        set x
    } \
    -result {ok} \
    -cleanup { 
	catch { close $f1 }
	catch { close $f2 }
	catch { removeFile foo }
	catch { removeFile foo2 }
    }

# cleanup
::tcltest::cleanupTests
return