}

    protected void tearDown() throws Exception {
        TimeoutManager.getInstance().clear();
    }

    /**
     * @throws Exception
     */
    public void testExpired() throws Exception {
        TimeoutTask task = TimeoutManager.getInstance().addTimeoutTarget(new TimeoutTarget() {
            public void expired() {
                System.out.println("expired");

stderr 'go: clean -testcache cannot be used with package arguments'

# golang.org/issue/29100: 'go clean -testcache' should succeed
# if the cache directory doesn't exist at all.
# It should not write a testexpire.txt file, since there are no
# test results that need to be invalidated in the first place.
env GOCACHE=$WORK/nonexistent
go clean -testcache
! exists $WORK/nonexistent

-- x/x_test.go --
package x_test
import (

		// we write a file to the cache indicating that all test results from before
		// right now are to be ignored.
		dir, _ := cache.DefaultDir()
		if dir != "off" {
			f, err := lockedfile.Edit(filepath.Join(dir, "testexpire.txt"))
			if err == nil {
				now := time.Now().UnixNano()
				buf, _ := io.ReadAll(f)
				prev, _ := strconv.ParseInt(strings.TrimSpace(string(buf)), 10, 64)
				if now > prev {

	// instead of searching out and deleting test result cache entries.)
	if dir, _ := cache.DefaultDir(); dir != "off" {
		if data, _ := lockedfile.Read(filepath.Join(dir, "testexpire.txt")); len(data) > 0 && data[len(data)-1] == '\n' {
			if t, err := strconv.ParseInt(string(data[:len(data)-1]), 10, 64); err == nil {
				testCacheExpire = time.Unix(0, t)
			}
		}
	}