done := make(chan struct{})
	go func() {
		t.Log("Writing status code 42")
		actual.WriteHeader(42)
		t.Log("Finished writing status code 42")
		close(done)

		actual.Write([]byte("foo"))
	}()

	// sleep some time to give write the possibility to do wrong stuff
	time.Sleep(100 * time.Millisecond)

	t.Log("Waiting for event in the channel")
	ev1, err := sink.Pop(time.Second)
	if err != nil {

	assert.True(t, trw.written, "written field is set after writing to tunneling response writer")
	// Writing to response writer after hijacked is an error.
	trw.hijacked = true
	_, err = trw.Write(expectedWrite)
	assert.Error(t, err, "Writing to ResponseWriter after Hijack() is an error")
	assert.True(t, errors.Is(err, http.ErrHijacked), "Hijacked error returned if writing after hijacked")
	// Validate WriteHeader().

## Table of Contents

1. [Overview](#overview)
1. [Writing Tests](#writing-tests)
    1. [Adding a Test Suite](#adding-a-test-suite)
    1. [Sub-Tests](#sub-tests)
    1. [Parallel Tests](#parallel-tests)
    1. [Using Components](#using-components)
    1. [Writing Components](#writing-components)
1. [Running Tests](#running-tests)

License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the...

	}

	// Write some data for the program to read, which should cause it to
	// exit.
	if _, err := pty.Write([]byte{'\n'}); err != nil {
		t.Fatalf("writing %q to pty: %v", "\n", err)
	}

	t.Logf("Waiting for exit...")

	if err = cmd.Wait(); err != nil {
		t.Errorf("subprogram failed: %v", err)
	}
}

// GO_TEST_TERMINAL_SIGNALS=1 subprocess above.

License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the...

 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and

 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and

      unless required by applicable law (such as deliberate and grossly
      negligent acts) or agreed to in writing, shall any Contributor be
      liable to You for damages, including any direct, indirect, special,
      incidental, or consequential damages of any character arising as a
      result of this License or out of the use or inability to use the
      Work (including but not limited to damages for loss of goodwill,

      unless required by applicable law (such as deliberate and grossly
      negligent acts) or agreed to in writing, shall any Contributor be
      liable to You for damages, including any direct, indirect, special,
      incidental, or consequential damages of any character arising as a
      result of this License or out of the use or inability to use the
      Work (including but not limited to damages for loss of goodwill,