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-rw-r--r--src/time/internal_test.go67
1 files changed, 67 insertions, 0 deletions
diff --git a/src/time/internal_test.go b/src/time/internal_test.go
new file mode 100644
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+++ b/src/time/internal_test.go
@@ -0,0 +1,67 @@
+// 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() {
+ z, err := loadLocation("America/Los_Angeles", zoneSources[len(zoneSources)-1:])
+ 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 OrigZoneSources = zoneSources
+
+func forceZipFileForTesting(zipOnly bool) {
+ zoneSources = make([]string, len(OrigZoneSources))
+ copy(zoneSources, OrigZoneSources)
+ if zipOnly {
+ zoneSources = zoneSources[len(zoneSources)-1:]
+ }
+}
+
+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}
+)