assertThat(source.read()).isEqualTo(data);
    out.reset();
  }

  public void testReset() throws Exception {
    byte[] data = newPreFilledByteArray(100);
    FileBackedOutputStream out = new FileBackedOutputStream(Integer.MAX_VALUE);
    ByteSource source = out.asByteSource();

    out.write(data);
    assertThat(source.read()).isEqualTo(data);

    out.reset();
    assertThat(source.read()).isEmpty();

    client = TestClient(app)
    with client.websocket_connect("/") as websocket:
        data = websocket.receive_text()
        assert data == "Hello, world!"


def test_router():
    client = TestClient(app)
    with client.websocket_connect("/router") as websocket:
        data = websocket.receive_text()
        assert data == "Hello, router!"


def test_prefix_router():
    client = TestClient(app)

        }

        @Override
        public byte[] getData() {
            return data;
        }

        @Override
        public String getDataAsString() {
            return data != null ? new String(data) : null;
        }

        @Override
        public void setData(byte[] data) {
            this.data = data;
        }

        @Override
        public String getEncoding() {

		if err != nil {
			t.Fatalf("Test %d: failed to create ErasureStorage: %v", i, err)
		}
		buffer := make([]byte, test.blocksize, 2*test.blocksize)

		data := make([]byte, test.data)
		if _, err = io.ReadFull(rand.Reader, data); err != nil {
			t.Fatalf("Test %d: failed to generate random test data: %v", i, err)
		}
		writers := make([]io.Writer, len(disks))
		for i, disk := range disks {
			if disk == OfflineDisk {
				continue
			}

		result := &FilterRule{}
		err := xml.Unmarshal(testCase.data, result)
		expectErr := (err != nil)

		if expectErr != testCase.expectErr {
			t.Fatalf("test %v: error: expected: %v, got: %v", i+1, testCase.expectErr, expectErr)
		}

		if !testCase.expectErr {
			if !reflect.DeepEqual(result, testCase.expectedResult) {
				t.Fatalf("test %v: data: expected: %v, got: %v", i+1, testCase.expectedResult, result)
			}
		}

		</c:if>
		<c:if test="${developmentMode}">
			<li class="nav-item" data-toggle="tooltip" data-placement="left"
				title="<la:message key="labels.development_mode_warning" />">
				<a class="nav-link active" href="${installationLink}" target="_olh"><i class="fa fa-exclamation-triangle text-warning" aria-hidden="true"></i></a></li>
		</c:if>
		<li class="nav-item" data-toggle="tooltip" data-placement="left"

import (
	"unicode/utf8"
)

type scratch struct {
	data []byte
	fill int
}

// reset scratch buffer
func (s *scratch) reset() { s.fill = 0 }

// bytes returns the written contents of scratch buffer
func (s *scratch) bytes() []byte { return s.data[0:s.fill] }

// grow scratch buffer
func (s *scratch) grow() {
	ndata := make([]byte, cap(s.data)*2)
	copy(ndata, s.data)
	s.data = ndata
}

        assertNull(trace.data());
    }

    @Test
    void testChainedTraces() {
        RequestTrace root = new RequestTrace("root", null, "root-data");
        RequestTrace level1 = new RequestTrace("level1", root, "level1-data");
        RequestTrace level2 = new RequestTrace("level2", level1, "level2-data");
        RequestTrace level3 = new RequestTrace(level2, "level3-data");

        // Verify the chain

## Return Type and Data Filtering { #return-type-and-data-filtering }

Let's continue from the previous example. We wanted to **annotate the function with one type**, but we wanted to be able to return from the function something that actually includes **more data**.

    void testGetSize() throws SMBProtocolDecodingException {
        // Prepare test data
        byte[] buffer = new byte[22];
        long expectedAllocationSize = 1024L;
        long expectedEndOfFile = 512L;
        int expectedNumberOfLinks = 3;
        boolean expectedDeletePending = true;
        boolean expectedDirectory = false;

        // Encode test data
        int offset = 0;