Fix some eventloop bugs

bgerror is supposed to be suppressed subsequently if it returns break
vwait should error on invalid array element
vwait should return an empty result
Don't accept 'after info' since it isn't supported
Also add some eventloop tests

Signed-off-by: Steve Bennett <steveb@workware.net.au>

1 files changed, 150 insertions, 0 deletions

diff --git a/tests/event.test b/tests/event.test
new file mode 100644
index 0000000..9f14f6d
--- /dev/null
+++ b/tests/event.test
@@ -0,0 +1,150 @@
+source testing.tcl
+
+test event-5.1 {Tcl_BackgroundError, HandleBgErrors procedures} {
+    catch {rename bgerror {}}
+    proc bgerror msg {
+		lappend ::x $msg
+    }
+    after 100 {error "a simple error"}
+    after 200 {open non_existent}
+    set x {}
+	vwait dummy
+    rename bgerror {}
+    set x
+} {{a simple error} {non_existent: No such file or directory}}
+
+test event-5.2 {Tcl_BackgroundError, HandleBgErrors procedures} {
+    proc bgerror msg {
+		lappend ::x $msg
+		return -code break
+    }
+    after 100 {error "a simple error"}
+    after 200 {open non_existent}
+    set x {}
+    vwait dummy
+    rename bgerror {}
+    set x
+} {{a simple error}}
+
+test event-7.1 {bgerror / regular} {
+    set errRes {}
+    proc bgerror {err} {
+		set ::errRes $err;
+    }
+    after 0 {error err1}
+    vwait errRes;
+    set errRes;
+} err1
+
+test event-7.2 {bgerror / accumulation} {
+    set errRes {}
+    proc bgerror {err} {
+		lappend ::errRes $err;
+    }
+    after 0 {error err1}
+    after 1 {error err2}
+    after 2 {error err3}
+    vwait dummy
+    set errRes;
+} {err1 err2 err3}
+
+test event-7.3 {bgerror / accumulation / break} {
+    set errRes {}
+    proc bgerror {err} {
+		lappend ::errRes $err;
+		return -code break "skip!";
+    }
+    after 0 {error err1}
+    after 1 {error err2}
+    after 2 {error err3}
+    vwait dummy
+    set errRes
+} err1
+
+# end of bgerror tests
+catch {rename bgerror {}}
+
+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 read "x(1)": variable isn't array}}
+
+test event-11.4 {Tcl_VwaitCmd procedure} {
+	vwait dummy
+    lappend ids [after 100 {set x x-done}]
+    lappend ids [after 200 {set y y-done}]
+    lappend ids [after 300 {set z z-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 before}
+
+foreach i $ids {
+    after cancel $i
+}
+
+test event-11.5 {Tcl_VwaitCmd procedure: round robin scheduling, 2 sources} {
+    set f1 [open test1 w]
+    proc accept {s args} {
+	puts $s foobar
+	close $s
+    }
+    catch {set s1 [socket stream.server 5001]}
+    after 1000
+    catch {set s2 [socket stream 5001]}
+    close $s1
+    set x 0
+    set y 0
+    set z 0
+    $s2 readable { incr z }
+    vwait z
+    $f1 writable { incr x; if { $y == 3 } { set z done } }
+    $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
+    vwait dummy
+    $f1 writable { incr x; if { $y == 3 } { set z done } }
+    $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-12.3 {Tcl_UpdateCmd procedure} {
+    after 500 {set x after}
+    after 1 {set y after}
+    after 2 {set z "after, y = $y"}
+    set x before
+    set y before
+    set z before
+    vwait z
+    list $x $y $z
+} {before after {after, y = after}}
+
+vwait dummy
+
+testreport