// Run some extra validation.
		if !t.Failed() && extra != nil {
			extra(t, tb, errBuf.Bytes(), stress)
		}

		// Dump some more information on failure.
		if t.Failed() && onBuilder {
			// Dump directly to the test log on the builder, since this
			// data is critical for debugging and this is the only way
			// we can currently make sure it's retained.

	return 0, errors.New("fake write failure")
}

func TestClientWriteError(t *testing.T) {
	w := &writeCrasher{done: make(chan bool)}
	c := NewClient(w)
	defer c.Close()

	res := false
	err := c.Call("foo", 1, &res)
	if err == nil {
		t.Fatal("expected error")
	}
	if err.Error() != "fake write failure" {
		t.Error("unexpected value of error:", err)
	}
	w.done <- true

	return 0, UnknownFileError(path)
}

/*
 * Errors
 */

// UnknownFileError represents a failure to find the specific file in
// the symbol table.
type UnknownFileError string

func (e UnknownFileError) Error() string { return "unknown file: " + string(e) }

// UnknownLineError represents a failure to map a line to a program
// counter, either because the line is beyond the bounds of the file

retry:
	var n uint32 = 1
	r := port_getn(portfd, &events[0], uint32(len(events)), &n, wait)
	e := errno()
	if r < 0 && e == _ETIME && n > 0 {
		// As per port_getn(3C), an ETIME failure does not preclude the
		// delivery of some number of events.  Treat a timeout failure
		// with delivered events as a success.
		r = 0
	}
	if r < 0 {
		if e != _EINTR && e != _ETIME {

	return StartElement{}, nil
}

type Failure struct{}

func (Failure) UnmarshalXML(*Decoder, StartElement) error {
	return nil
}

func TestTokenUnmarshaler(t *testing.T) {
	defer func() {
		if r := recover(); r != nil {
			t.Error("Unexpected panic using custom token unmarshaler")
		}
	}()

	d := NewTokenDecoder(tokReader{})
	d.Decode(&Failure{})
}

				},
			},
		},
		leaf: leafSpec{
			sans: []string{"dns:example.com"},
			ekus: []string{"serverAuth", "other"},
		},
	},

	// #63: An intermediate with enumerated EKUs causes a failure if we
	// test for an EKU not in that set. (ServerAuth is required by
	// default.)
	{
		roots: make([]constraintsSpec, 1),
		intermediates: [][]constraintsSpec{
			{
				{

		if !b.Run("test", func(b *testing.B) {
			// Add a loop so that the test won't fail. See issue 38677.
			for i := 0; i < b.N; i++ {
				_ = b.TempDir()
			}
		}) {
			t.Fatal("Sub test failure in a benchmark")
		}
	})
}

func TestTempDir(t *testing.T) {
	testTempDir(t)
	t.Run("InSubtest", testTempDir)
	t.Run("test/subtest", testTempDir)
	t.Run("test\\subtest", testTempDir)

	}
}

// assignableTo reports whether x is assignable to a variable of type T. If the
// result is false and a non-nil cause is provided, it may be set to a more
// detailed explanation of the failure (result != ""). The returned error code
// is only valid if the (first) result is false. The check parameter may be nil
// if assignableTo is invoked through an exported API call, i.e., when all
// methods have been type-checked.

	c := &t.context

	if !c.next() {
		return c.ret()
	}

	for {
		p := c.info
		if t.rewrite != nil {
			t.rewrite(c)
		}

		wasMid := p.isMid()
		// Break out of this loop on failure to ensure we do not modify the
		// state incorrectly.
		if p.isCased() {
			if !c.isMidWord {
				if !t.title(c) {
					break
				}
				c.isMidWord = true
			} else if !t.lower(c) {
				break

		if race.Enabled {
			// This test runs the runtime out of hint
			// addresses, so it will start mapping the
			// heap wherever it can. The race detector
			// doesn't support this, so look for the
			// expected failure.
			if want := "too many address space collisions"; !strings.Contains(string(out), want) {
				t.Fatalf("want %q, got:\n%s", want, string(out))
			}
		} else if !strings.Contains(string(out), "PASS\n") || err != nil {