}
	// Start processing requests.
	close(processHandler)

	// Drain responses
	got := 0
	for resp := range st.responses {
		// t.Log("got response", resp)
		errFatal(resp.Err)
		if resp.Msg[0] != byte(got) {
			t.Error("expected response", got, "got", resp.Msg[0])
		}
		got++
	}
	if got != 100 {
		t.Error("expected 100 responses, got", got)
	}
}

def test_security_oauth2_password_bearer_no_header():
    response = client.get("/users/me")
    assert response.status_code == 200, response.text
    assert response.json() == {"msg": "Create an account first"}


def test_strict_login_no_data():
    response = client.post("/login")
    assert response.status_code == 422
    assert response.json() == IsDict(
        {
            "detail": [
                {

Por exemplo, você pode querer retornar uma *response* em *plain text* ao invés de um JSON para os seguintes erros:

```Python hl_lines="3-4  9-11  22"
{!../../../docs_src/handling_errors/tutorial004.py!}
```

!!! note "Detalhes Técnicos"
    Você pode usar `from starlette.responses import PlainTextResponse`.

client = TestClient(app)


def test_get():
    response = client.post(
        "/invoices/", json={"id": "fooinvoice", "customer": "John", "total": 5.3}
    )
    assert response.status_code == 200, response.text
    assert response.json() == {"msg": "Invoice received"}


def test_openapi_schema():
    with client:
        response = client.get("/openapi.json")
        assert response.json() == {
            "openapi": "3.1.0",

def test_security_oauth2_password_bearer_no_header():
    response = client.get("/users/me")
    assert response.status_code == 403, response.text
    assert response.json() == {"detail": "Not authenticated"}


def test_strict_login_no_data():
    response = client.post("/login")
    assert response.status_code == 422
    assert response.json() == IsDict(
        {
            "detail": [
                {

	if handler == nil {
		return nil, ErrUnknownHandler
	}

	var requests chan []byte
	var responses chan Response
	if handler.InCapacity > 0 {
		requests = make(chan []byte, handler.InCapacity)
	}
	if handler.OutCapacity > 0 {
		responses = make(chan Response, handler.OutCapacity)
	} else {
		responses = make(chan Response, 1)
	}

	cl, err := c.newMuxClient(ctx)
	if err != nil {
		return nil, err
	}

def test_security_oauth2_password_bearer_no_header():
    response = client.get("/users/me")
    assert response.status_code == 200, response.text
    assert response.json() == {"msg": "Create an account first"}


def test_strict_login_None():
    response = client.post("/login", data=None)
    assert response.status_code == 422
    assert response.json() == IsDict(
        {
            "detail": [
                {

          .build(),
      )
    call.execute().use { response ->
      assertThat(response.headers)
        .isEqualTo(headersOf("h1", "v1", "h2", "v2"))
      val responseBody = response.body.source()
      assertThat(responseBody.readUtf8(2)).isEqualTo("ok")
      assertThat(responseBody.exhausted()).isTrue()
      assertThat(response.trailers()).isEqualTo(headersOf("trailers", "boom"))
    }

        .build(),
    )
    val call1 =
      client.newCall(
        Request.Builder()
          .url(server.url("/"))
          .build(),
      )
    val response1 = call1.execute()
    assertThat(response1.body.string()).isEqualTo("abc")
    response1.close()

    // Force a fresh connection for the next request.
    client.connectionPool.evictAll()

def test_openapi_schema(client: TestClient):
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == {
        "openapi": "3.1.0",
        "info": {"title": "FastAPI", "version": "0.1.0"},
        "paths": {
            "/files/": {
                "post": {
                    "responses": {
                        "200": {