### Testes no seu editor

Se você quer usar os testes integrados em seu editor adicione `./docs_src` na sua variável `PYTHONPATH`.

Por exemplo, no VS Code você pode criar um arquivo `.env` com:

```env

    bufferHelper("no newlines at all", "no newlines at all");
    bufferHelper("two lines\nbut no newline at end", "two lines\n", "but no newline at end");
    bufferHelper(
        "\nempty first line\nno newline at end", "\n", "empty first line\n", "no newline at end");
    bufferHelper("three\rlines\rno newline at end", "three\r", "lines\r", "no newline at end");

	}

	var result Yasuo
	if err := DB.First(&result, "id = ?", yasuo.ID).Error; err != nil || yasuo.Name != "jinzhu" {
		t.Errorf("No error should happen, but got %v", err)
	}

	if err := DB.Where("id = $1", yasuo.ID).First(&Yasuo{}).Error; err != nil || yasuo.Name != "jinzhu" {
		t.Errorf("No error should happen, but got %v", err)
	}

	yasuo.Name = "jinzhu1"
	if err := DB.Save(&yasuo).Error; err != nil {

  }

  @Test fun testInvalidParse() {
    assertInvalid("", "No subtype found for: \"\"")
    assertInvalid("/", "No subtype found for: \"/\"")
    assertInvalid("text", "No subtype found for: \"text\"")
    assertInvalid("text/", "No subtype found for: \"text/\"")
    assertInvalid("te<t/plain", "No subtype found for: \"te<t/plain\"")
    assertInvalid(" text/plain", "No subtype found for: \" text/plain\"")

public class ArrayBasedUnicodeEscaperTest extends TestCase {
  private static final ImmutableMap<Character, String> NO_REPLACEMENTS = ImmutableMap.of();
  private static final ImmutableMap<Character, String> SIMPLE_REPLACEMENTS =
      ImmutableMap.of(
          '\n', "<newline>",
          '\t', "<tab>",
          '&', "<and>");
  private static final char[] NO_CHARS = new char[0];

  public void testReplacements() throws IOException {

### ¿Es la concurrencia mejor que el paralelismo?

¡No! Esa no es la moraleja de la historia.

La concurrencia es diferente al paralelismo. Y es mejor en escenarios **específicos** que implican mucha espera. Debido a eso, generalmente es mucho mejor que el paralelismo para el desarrollo de aplicaciones web. Pero no para todo.

Entonces, para explicar eso, imagina la siguiente historia corta:

    return {"item_id": item_id, "q": q}
```

### Dockerfile

Agora, no mesmo diretório do projeto, crie um arquivo `Dockerfile` com:

```{ .dockerfile .annotate }
# (1)
FROM python:3.9

# (2)
WORKDIR /code

# (3)
COPY ./requirements.txt /code/requirements.txt

# (4)
RUN pip install --no-cache-dir --upgrade -r /code/requirements.txt

# (5)
COPY ./app /code/app

# (6)

      // the operation would be a no-op, so exceptions are allowed but not required
    }
    expectUnchanged();
  }

  @MapFeature.Require(absent = SUPPORTS_PUT)
  public void testReplaceEntry_unsupportedAbsentKey() {
    try {
      getMap().replace(k3(), v3(), v4());
    } catch (UnsupportedOperationException tolerated) {
      // the operation would be a no-op, so exceptions are allowed but not required
    }

def test_no_multipart_installed(monkeypatch):
    monkeypatch.delattr("multipart.__version__", raising=False)
    with pytest.raises(RuntimeError, match=multipart_not_installed_error):
        app = FastAPI()

        @app.post("/")
        async def root(username: str = Form()):
            return username  # pragma: nocover


def test_no_multipart_installed_file(monkeypatch):

    }
  }

  @Test fun toMultimapGroupsHeaders() {
    val headers =
      Headers.headersOf(
        "cache-control",
        "no-cache",
        "cache-control",
        "no-store",
        "user-agent",
        "OkHttp",
      )
    val headerMap = headers.toMultimap()
    assertThat(headerMap["cache-control"]!!.size).isEqualTo(2)