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+# This file contains a collection of tests for the procedures in the file
+# tclEvent.c, which includes the "update", and "vwait" Tcl
+# commands.  Sourcing this file into Tcl runs the tests and generates
+# output for errors.  No output means no errors were found.
+#
+# Copyright (c) 1995-1997 Sun Microsystems, Inc.
+#
+# See the file "license.terms" for information on usage and redistribution
+# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+#
+# "@(#) event.test 1.35 97/08/11 11:58:38"
+
+if {[string compare test [info procs test]] == 1} then {source defs}
+
+if {[catch {testfilehandler create 0 off off}] == 0 } {
+    test event-1.1 {Tcl_CreateFileHandler, reading} {
+	testfilehandler close
+	testfilehandler create 0 readable off
+	testfilehandler clear 0
+	testfilehandler oneevent
+	set result ""
+	lappend result [testfilehandler counts 0]
+	testfilehandler fillpartial 0
+	testfilehandler oneevent
+	lappend result [testfilehandler counts 0]
+	testfilehandler oneevent
+	lappend result [testfilehandler counts 0]
+	testfilehandler close
+	set result
+    } {{0 0} {1 0} {2 0}}
+    test event-1.2 {Tcl_CreateFileHandler, writing} {nonPortable} {
+	# This test is non-portable because on some systems (e.g.
+	# SunOS 4.1.3) pipes seem to be writable always.
+	testfilehandler close
+	testfilehandler create 0 off writable
+	testfilehandler clear 0
+	testfilehandler oneevent
+	set result ""
+	lappend result [testfilehandler counts 0]
+	testfilehandler fillpartial 0
+	testfilehandler oneevent
+	lappend result [testfilehandler counts 0]
+	testfilehandler fill 0
+	testfilehandler oneevent
+	lappend result [testfilehandler counts 0]
+	testfilehandler close
+	set result
+    } {{0 1} {0 2} {0 2}}
+    test event-1.3 {Tcl_DeleteFileHandler} {nonPortable} {
+	testfilehandler close
+	testfilehandler create 2 disabled disabled
+	testfilehandler create 1 readable writable
+	testfilehandler create 0 disabled disabled
+	testfilehandler fillpartial 1
+	set result ""
+	testfilehandler oneevent
+	lappend result [testfilehandler counts 1]
+	testfilehandler oneevent
+	lappend result [testfilehandler counts 1]
+	testfilehandler oneevent
+	lappend result [testfilehandler counts 1]
+	testfilehandler create 1 off off
+	testfilehandler oneevent
+	lappend result [testfilehandler counts 1]
+	testfilehandler close
+	set result
+    } {{0 1} {1 1} {1 2} {0 0}}
+
+    test event-2.1 {Tcl_DeleteFileHandler} {nonPortable} {
+	testfilehandler close
+	testfilehandler create 2 disabled disabled
+	testfilehandler create 1 readable writable
+	testfilehandler fillpartial 1
+	set result ""
+	testfilehandler oneevent
+	lappend result [testfilehandler counts 1]
+	testfilehandler oneevent
+	lappend result [testfilehandler counts 1]
+	testfilehandler oneevent
+	lappend result [testfilehandler counts 1]
+	testfilehandler create 1 off off
+	testfilehandler oneevent
+	lappend result [testfilehandler counts 1]
+	testfilehandler close
+	set result
+    } {{0 1} {1 1} {1 2} {0 0}}
+    test event-2.2 {Tcl_DeleteFileHandler, fd reused & events still pending} {nonPortable} {
+	testfilehandler close
+	testfilehandler create 0 readable writable
+	testfilehandler fillpartial 0
+	set result ""
+	testfilehandler oneevent
+	lappend result [testfilehandler counts 0]
+	testfilehandler close
+	testfilehandler create 0 readable writable
+	testfilehandler oneevent
+	lappend result [testfilehandler counts 0]
+	testfilehandler close
+	set result
+    } {{0 1} {0 0}}
+
+    test event-3.1 {FileHandlerCheckProc, TCL_FILE_EVENTS off } {
+	testfilehandler close
+	testfilehandler create 1 readable writable
+	testfilehandler fillpartial 1
+	testfilehandler windowevent
+	set result [testfilehandler counts 1]
+	testfilehandler close
+	set result
+    } {0 0}
+
+    test event-4.1 {FileHandlerEventProc, race between event and disabling} {nonPortable} {
+	update
+	testfilehandler close
+	testfilehandler create 2 disabled disabled
+	testfilehandler create 1 readable writable
+	testfilehandler fillpartial 1
+	set result ""
+	testfilehandler oneevent
+	lappend result [testfilehandler counts 1]
+	testfilehandler oneevent
+	lappend result [testfilehandler counts 1]
+	testfilehandler oneevent
+	lappend result [testfilehandler counts 1]
+	testfilehandler create 1 disabled disabled
+	testfilehandler oneevent
+	lappend result [testfilehandler counts 1]
+	testfilehandler close
+	set result
+    } {{0 1} {1 1} {1 2} {0 0}}
+    test event-4.2 {FileHandlerEventProc, TCL_FILE_EVENTS off} {nonPortable} {
+	update
+	testfilehandler close
+	testfilehandler create 1 readable writable
+	testfilehandler create 2 readable writable
+	testfilehandler fillpartial 1
+	testfilehandler fillpartial 2
+	testfilehandler oneevent
+	set result ""
+	lappend result [testfilehandler counts 1] [testfilehandler counts 2]
+	testfilehandler windowevent
+	lappend result [testfilehandler counts 1] [testfilehandler counts 2]
+	testfilehandler close
+	set result
+    } {{0 0} {0 1} {0 0} {0 1}}
+    testfilehandler close
+    update
+}
+
+test event-5.1 {Tcl_BackgroundError, HandleBgErrors procedures} {
+    catch {rename bgerror {}}
+    proc bgerror msg {
+	global errorInfo errorCode x
+	lappend x [list $msg $errorInfo $errorCode]
+    }
+    after idle {error "a simple error"}
+    after idle {open non_existent}
+    after idle {set errorInfo foobar; set errorCode xyzzy}
+    set x {}
+    update idletasks
+    rename bgerror {}
+    set x
+} {{{a simple error} {a simple error
+    while executing
+"error "a simple error""
+    ("after" script)} NONE} {{couldn't open "non_existent": no such file or directory} {couldn't open "non_existent": no such file or directory
+    while executing
+"open non_existent"
+    ("after" script)} {POSIX ENOENT {no such file or directory}}}}
+test event-5.2 {Tcl_BackgroundError, HandleBgErrors procedures} {
+    catch {rename bgerror {}}
+    proc bgerror msg {
+	global x
+	lappend x $msg
+	return -code break
+    }
+    after idle {error "a simple error"}
+    after idle {open non_existent}
+    set x {}
+    update idletasks
+    rename bgerror {}
+    set x
+} {{a simple error}}
+
+test event-6.1 {BgErrorDeleteProc procedure} {
+    catch {interp delete foo}
+    interp create foo
+    foo eval {
+	proc bgerror args {
+	    global errorInfo
+	    set f [open err.out r+]
+	    seek $f 0 end
+	    puts $f "$args $errorInfo"
+	    close $f
+	}
+	after 100 {error "first error"}
+	after 100 {error "second error"}
+    }
+    makeFile Unmodified err.out
+    after 100 {interp delete foo}
+    after 200
+    update
+    set f [open err.out r]
+    set result [read $f]
+    close $f
+    removeFile err.out
+    set result
+} {Unmodified
+}
+
+test event-7.1 {bgerror / regular} {
+    set errRes {}
+    proc bgerror {err} {
+	global errRes;
+	set errRes $err;
+    }
+    after 0 {error err1}
+    vwait errRes;
+    set errRes;
+} err1
+
+test event-7.2 {bgerror / accumulation} {
+    set errRes {}
+    proc bgerror {err} {
+	global errRes;
+	lappend errRes $err;
+    }
+    after 0 {error err1}
+    after 0 {error err2}
+    after 0 {error err3}
+    update
+    set errRes;
+} {err1 err2 err3}
+
+test event-7.3 {bgerror / accumulation / break} {
+    set errRes {}
+    proc bgerror {err} {
+	global errRes;
+	lappend errRes $err;
+	return -code break "skip!";
+    }
+    after 0 {error err1}
+    after 0 {error err2}
+    after 0 {error err3}
+    update
+    set errRes;
+} err1
+
+test event-7.4 {tkerror is nothing special anymore to tcl} {
+    set errRes {}
+    # we don't just rename bgerror to empty because it could then
+    # be autoloaded...
+    proc bgerror {err} {
+	global errRes;
+	lappend errRes "bg:$err";
+    }
+    proc tkerror {err} {
+	global errRes;
+	lappend errRes "tk:$err";
+    }
+    after 0 {error err1}
+    update
+    rename tkerror {}
+    set errRes
+} bg:err1
+
+# someday : add a test checking that 
+# when there is no bgerror, an error msg goes to stderr
+# ideally one would use sub interp and transfer a fake stderr
+# to it, unfortunatly the current interp tcl API does not allow
+# that. the other option would be to use fork a test but it
+# then becomes more a file/exec test than a bgerror test.
+
+# end of bgerror tests
+catch {rename bgerror {}}
+
+
+if {[info commands testexithandler] != ""} {
+    test event-8.1 {Tcl_CreateExitHandler procedure} {stdio} {
+	set child [open |[list [info nameofexecutable]] r+]
+	puts $child "testexithandler create 41; testexithandler create 4"
+	puts $child "testexithandler create 6; exit"
+	flush $child
+	set result [read $child]
+	close $child
+	set result
+    } {even 6
+even 4
+odd 41
+}
+
+    test event-9.1 {Tcl_DeleteExitHandler procedure} {stdio} {
+	set child [open |[list [info nameofexecutable]] r+]
+	puts $child "testexithandler create 41; testexithandler create 4"
+	puts $child "testexithandler create 6; testexithandler delete 41"
+	puts $child "testexithandler create 16; exit"
+	flush $child
+	set result [read $child]
+	close $child
+	set result
+    } {even 16
+even 6
+even 4
+}
+    test event-9.2 {Tcl_DeleteExitHandler procedure} {stdio} {
+	set child [open |[list [info nameofexecutable]] r+]
+	puts $child "testexithandler create 41; testexithandler create 4"
+	puts $child "testexithandler create 6; testexithandler delete 4"
+	puts $child "testexithandler create 16; exit"
+	flush $child
+	set result [read $child]
+	close $child
+	set result
+    } {even 16
+even 6
+odd 41
+}
+    test event-9.3 {Tcl_DeleteExitHandler procedure} {stdio} {
+	set child [open |[list [info nameofexecutable]] r+]
+	puts $child "testexithandler create 41; testexithandler create 4"
+	puts $child "testexithandler create 6; testexithandler delete 6"
+	puts $child "testexithandler create 16; exit"
+	flush $child
+	set result [read $child]
+	close $child
+	set result
+    } {even 16
+even 4
+odd 41
+}
+    test event-9.4 {Tcl_DeleteExitHandler procedure} {stdio} {
+	set child [open |[list [info nameofexecutable]] r+]
+	puts $child "testexithandler create 41; testexithandler delete 41"
+	puts $child "testexithandler create 16; exit"
+	flush $child
+	set result [read $child]
+	close $child
+	set result
+    } {even 16
+}
+}
+
+test event-10.1 {Tcl_Exit procedure} {stdio} {
+    set child [open |[list [info nameofexecutable]] r+]
+    puts $child "exit 3"
+    list [catch {close $child} msg] $msg [lindex $errorCode 0] \
+        [lindex $errorCode 2]
+} {1 {child process exited abnormally} CHILDSTATUS 3}
+
+test event-11.1 {Tcl_VwaitCmd procedure} {
+    list [catch {vwait} msg] $msg
+} {1 {wrong # args: should be "vwait name"}}
+test event-11.2 {Tcl_VwaitCmd procedure} {
+    list [catch {vwait a b} msg] $msg
+} {1 {wrong # args: should be "vwait name"}}
+test event-11.3 {Tcl_VwaitCmd procedure} {
+    catch {unset x}
+    set x 1
+    list [catch {vwait x(1)} msg] $msg
+} {1 {can't trace "x(1)": variable isn't array}}
+test event-11.4 {Tcl_VwaitCmd procedure} {
+    foreach i [after info] {
+	after cancel $i
+    }
+    after 10; update; # On Mac make sure update won't take long
+    after 100 {set x x-done}
+    after 200 {set y y-done}
+    after 300 {set z z-done}
+    after idle {set q q-done}
+    set x before
+    set y before
+    set z before
+    set q before
+    list [vwait y] $x $y $z $q
+} {{} x-done y-done before q-done}
+
+foreach i [after info] {
+    after cancel $i
+}
+
+test event-11.5 {Tcl_VwaitCmd procedure: round robin scheduling, 2 sources} {socket} {
+    set f1 [open test1 w]
+    proc accept {s args} {
+	puts $s foobar
+	close $s
+    }
+    set s1 [socket -server accept 5000]
+    set s2 [socket 127.0.0.1 5000]
+    close $s1
+    set x 0
+    set y 0
+    set z 0
+    fileevent $s2 readable { incr z }
+    vwait z
+    fileevent $f1 writable { incr x; if { $y == 3 } { set z done } }
+    fileevent $s2 readable { incr y; if { $x == 3 } { set z done } }
+    vwait z
+    close $f1
+    close $s2
+    file delete test1 test2
+    list $x $y $z
+} {3 3 done}
+test event-11.6 {Tcl_VwaitCmd procedure: round robin scheduling, same source} {
+    file delete test1 test2
+    set f1 [open test1 w]
+    set f2 [open test2 w]
+    set x 0
+    set y 0
+    set z 0
+    update
+    fileevent $f1 writable { incr x; if { $y == 3 } { set z done } }
+    fileevent $f2 writable { incr y; if { $x == 3 } { set z done } }
+    vwait z
+    close $f1
+    close $f2
+    file delete test1 test2
+    list $x $y $z
+} {3 3 done}
+
+
+test event-12.1 {Tcl_UpdateCmd procedure} {
+    list [catch {update a b} msg] $msg
+} {1 {wrong # args: should be "update ?idletasks?"}}
+test event-12.2 {Tcl_UpdateCmd procedure} {
+    list [catch {update bogus} msg] $msg
+} {1 {bad option "bogus": must be idletasks}}
+test event-12.3 {Tcl_UpdateCmd procedure} {
+    foreach i [after info] {
+	after cancel $i
+    }
+    after 500 {set x after}
+    after idle {set y after}
+    after idle {set z "after, y = $y"}
+    set x before
+    set y before
+    set z before
+    update idletasks
+    list $x $y $z
+} {before after {after, y = after}}
+test event-12.4 {Tcl_UpdateCmd procedure} {
+    foreach i [after info] {
+	after cancel $i
+    }
+    after 10; update; # On Mac make sure update won't take long
+    after 200 {set x x-done}
+    after 600 {set y y-done}
+    after idle {set z z-done}
+    set x before
+    set y before
+    set z before
+    after 300
+    update
+    list $x $y $z
+} {x-done before z-done}
+
+if {[info commands testfilehandler] != ""} {
+    test event-13.1 {Tcl_WaitForFile procedure, readable} unixOnly {
+	foreach i [after info] {
+	    after cancel $i
+	}
+	after 100 set x timeout
+	testfilehandler close
+	testfilehandler create 1 off off
+	set x "no timeout"
+	set result [testfilehandler wait 1 readable 0]
+	update
+	testfilehandler close
+	list $result $x
+    } {{} {no timeout}}
+    test event-13.2 {Tcl_WaitForFile procedure, readable} unixOnly {
+	foreach i [after info] {
+	    after cancel $i
+	}
+	after 100 set x timeout
+	testfilehandler close
+	testfilehandler create 1 off off
+	set x "no timeout"
+	set result [testfilehandler wait 1 readable 100]
+	update
+	testfilehandler close
+	list $result $x
+    } {{} timeout}
+    test event-13.3 {Tcl_WaitForFile procedure, readable} unixOnly {
+	foreach i [after info] {
+	    after cancel $i
+	}
+	after 100 set x timeout
+	testfilehandler close
+	testfilehandler create 1 off off
+	testfilehandler fillpartial 1
+	set x "no timeout"
+	set result [testfilehandler wait 1 readable 100]
+	update
+	testfilehandler close
+	list $result $x
+    } {readable {no timeout}}
+    test event-13.4 {Tcl_WaitForFile procedure, writable} {unixOnly nonPortable} {
+	foreach i [after info] {
+	    after cancel $i
+	}
+	after 100 set x timeout
+	testfilehandler close
+	testfilehandler create 1 off off
+	testfilehandler fill 1
+	set x "no timeout"
+	set result [testfilehandler wait 1 writable 0]
+	update
+	testfilehandler close
+	list $result $x
+    } {{} {no timeout}}
+    test event-13.5 {Tcl_WaitForFile procedure, writable} {unixOnly nonPortable} {
+	foreach i [after info] {
+	    after cancel $i
+	}
+	after 100 set x timeout
+	testfilehandler close
+	testfilehandler create 1 off off
+	testfilehandler fill 1
+	set x "no timeout"
+	set result [testfilehandler wait 1 writable 100]
+	update
+	testfilehandler close
+	list $result $x
+    } {{} timeout}
+    test event-13.6 {Tcl_WaitForFile procedure, writable} unixOnly {
+	foreach i [after info] {
+	    after cancel $i
+	}
+	after 100 set x timeout
+	testfilehandler close
+	testfilehandler create 1 off off
+	set x "no timeout"
+	set result [testfilehandler wait 1 writable 100]
+	update
+	testfilehandler close
+	list $result $x
+    } {writable {no timeout}}
+    test event-13.7 {Tcl_WaitForFile procedure, don't call other event handlers} unixOnly {
+	foreach i [after info] {
+	    after cancel $i
+	}
+	after 100 lappend x timeout
+	after idle lappend x idle
+	testfilehandler close
+	testfilehandler create 1 off off
+	set x ""
+	set result [list [testfilehandler wait 1 readable 200] $x]
+	update
+	testfilehandler close
+	lappend result $x
+    } {{} {} {timeout idle}}
+}
+
+if {[info commands testfilewait] != ""} {
+    test event-13.8 {Tcl_WaitForFile procedure, waiting indefinitely} unixOnly {
+	set f [open "|sleep 2" r]
+	set result ""
+	lappend result [testfilewait $f readable 100]
+	lappend result [testfilewait $f readable -1]
+	close $f
+	set result
+    } {{} readable}
+}
+
+foreach i [after info] {
+    after cancel $i
+}