Adding upstream version 1.20.14.upstream/1.20.14upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 72 insertions, 0 deletions

diff --git a/src/time/internal_test.go b/src/time/internal_test.go
new file mode 100644
index 0000000..4c4a720
--- /dev/null
+++ b/src/time/internal_test.go
@@ -0,0 +1,72 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package time
+
+func init() {
+	// Force US/Pacific for time zone tests.
+	ForceUSPacificForTesting()
+}
+
+func initTestingZone() {
+	// For hermeticity, use only tzinfo source from the test's GOROOT,
+	// not the system sources and not whatever GOROOT may happen to be
+	// set in the process's environment (if any).
+	// This test runs in GOROOT/src/time, so GOROOT is "../..",
+	// but it is theoretically possible
+	sources := []string{"../../lib/time/zoneinfo.zip"}
+	z, err := loadLocation("America/Los_Angeles", sources)
+	if err != nil {
+		panic("cannot load America/Los_Angeles for testing: " + err.Error() + "; you may want to use -tags=timetzdata")
+	}
+	z.name = "Local"
+	localLoc = *z
+}
+
+var origPlatformZoneSources []string = platformZoneSources
+
+func disablePlatformSources() (undo func()) {
+	platformZoneSources = nil
+	return func() {
+		platformZoneSources = origPlatformZoneSources
+	}
+}
+
+var Interrupt = interrupt
+var DaysIn = daysIn
+
+func empty(arg any, seq uintptr) {}
+
+// Test that a runtimeTimer with a period that would overflow when on
+// expiration does not throw or cause other timers to hang.
+//
+// This test has to be in internal_test.go since it fiddles with
+// unexported data structures.
+func CheckRuntimeTimerPeriodOverflow() {
+	// We manually create a runtimeTimer with huge period, but that expires
+	// immediately. The public Timer interface would require waiting for
+	// the entire period before the first update.
+	r := &runtimeTimer{
+		when:   runtimeNano(),
+		period: 1<<63 - 1,
+		f:      empty,
+		arg:    nil,
+	}
+	startTimer(r)
+	defer stopTimer(r)
+
+	// If this test fails, we will either throw (when siftdownTimer detects
+	// bad when on update), or other timers will hang (if the timer in a
+	// heap is in a bad state). There is no reliable way to test this, but
+	// we wait on a short timer here as a smoke test (alternatively, timers
+	// in later tests may hang).
+	<-After(25 * Millisecond)
+}
+
+var (
+	MinMonoTime = Time{wall: 1 << 63, ext: -1 << 63, loc: UTC}
+	MaxMonoTime = Time{wall: 1 << 63, ext: 1<<63 - 1, loc: UTC}
+
+	NotMonoNegativeTime = Time{wall: 0, ext: -1<<63 + 50}
+)