writer.append("Hello,");
    writer.append(' ');
    writer.append("The World Wide Web", 4, 9);
    writer.append("!");

    assertEquals("Hello, World!", builder.toString());
  }

  public void testCloseFlush() throws IOException {
    SpyAppendable spy = new SpyAppendable();
    Writer writer = new AppendableWriter(spy);

    writer.write("Hello");
    assertFalse(spy.flushed);

```txt
Hello, World from Flask!
```

And if you go to <a href="http://localhost:8000/v2" class="external-link" target="_blank">http://localhost:8000/v2</a> you will see the response from FastAPI:

```JSON
{
    "message": "Hello World"
}

    assert response.json() == {
        "message": "Hello Users!",
        "params": {"q": None, "skip": 5, "limit": 10},
    }


def test_override_in_users_with_q(test_module: ModuleType):
    client = test_module.client
    response = client.get("/users/?q=foo")
    assert response.status_code == 200, response.text
    assert response.json() == {
        "message": "Hello Users!",

@pytest.mark.parametrize(
    "path",
    [
        "/required-bytes",
        "/required-uploadfile",
    ],
)
def test_required(path: str):
    client = TestClient(app)
    response = client.post(path, files=[("p", b"hello")])
    assert response.status_code == 200
    assert response.json() == {"file_size": 5}


# =====================================================================================
# Alias

    void testJoinSingleElement() {
        String result = StringUtil.join(",", "hello");
        assertEquals("hello", result);
    }

    @Test
    @DisplayName("Should join two elements with delimiter")
    void testJoinTwoElements() {
        String result = StringUtil.join(",", "hello", "world");
        assertEquals("hello,world", result);
    }

    @Test

```txt
Hello, World from Flask!
```

并且如果您访问 <a href="http://localhost:8000/v2" class="external-link" target="_blank">http://localhost:8000/v2</a>，您将会看到由 FastAPI 返回的响应：

```JSON
{
    "message": "Hello World"
}

def test_flask():
    response = client.get("/v1/")
    assert response.status_code == 200, response.text
    assert response.text == "Hello, World from Flask!"


def test_app():
    response = client.get("/v2")
    assert response.status_code == 200, response.text

	sep := []byte("/")
	for range b.N {
		for range SplitSeq(benchInputHard, sep) {
		}
	}
}

func BenchmarkSplitSeqMultiByteSeparator(b *testing.B) {
	sep := []byte("hello")
	for range b.N {
		for range SplitSeq(benchInputHard, sep) {
		}
	}
}

func BenchmarkSplitAfterSeqEmptySeparator(b *testing.B) {
	for range b.N {
		for range SplitAfterSeq(benchInputHard, nil) {
		}

            String originalString = "Hello World Test";
            byte[] allBytes = originalString.getBytes(StandardCharsets.UTF_16LE);
            int partialLength = "Hello World".getBytes(StandardCharsets.UTF_16LE).length;

            // When
            String result = Strings.fromUNIBytes(allBytes, 0, partialLength);

            // Then

        ):
            if q:
                return f"Hello {q}"
            else:
                return "Hello World"

    client = TestClient(app)
    return client


@needs_py310
def test_no_query():
    client = get_client()
    response = client.post("/items/")
    assert response.status_code == 200
    assert response.json() == "Hello World"


@needs_py310
def test_q_fixedquery():