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// 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}
)