rev: v0.12.10
    hooks:
    -   id: ruff
        args:
        - --fix
    -   id: ruff-format
ci:
    autofix_commit_msg: 🎨 [pre-commit.ci] Auto format from pre-commit.com hooks

      int expectPort,
      boolean expectHasExplicitPort) {
    HostAndPort hp;
    try {
      hp = HostAndPort.fromString(hpString);
    } catch (IllegalArgumentException e) {
      // Make sure we expected this.
      assertNull(expectHost);
      return;
    }
    assertNotNull(expectHost);

    // Apply withDefaultPort(), yielding hp2.

      int expectPort,
      boolean expectHasExplicitPort) {
    HostAndPort hp;
    try {
      hp = HostAndPort.fromString(hpString);
    } catch (IllegalArgumentException e) {
      // Make sure we expected this.
      assertNull(expectHost);
      return;
    }
    assertNotNull(expectHost);

    // Apply withDefaultPort(), yielding hp2.

## Using `TestClient` { #using-testclient }

/// info

To use `TestClient`, first install <a href="https://www.python-httpx.org" class="external-link" target="_blank">`httpx`</a>.

Make sure you create a [virtual environment](../virtual-environments.md){.internal-link target=_blank}, activate it, and then install it, for example:

```console
$ pip install httpx
```

///

Import `TestClient`.

  @J2ktIncompatible
  @GwtIncompatible // SerializableTester
  public void testIsNull_serialization() {
    Predicate<String> pre = Predicates.isNull();
    Predicate<String> post = SerializableTester.reserializeAndAssert(pre);
    assertEquals(pre.apply("foo"), post.apply("foo"));
    assertEquals(pre.apply(null), post.apply(null));
  }

  public void testNotNull_apply() {

## Docs

First, make sure you set up your environment as described above, that will install all the requirements.

### Docs live

During local development, there is a script that builds the site and checks for any changes, live-reloading:

* Manage the **virtual environment** for your projects
* Install **packages**
* Manage package **dependencies and versions** for your project
* Make sure you have an **exact** set of packages and versions to install, including their dependencies, so that you can be sure that you can run your project in production exactly the same as in your computer while developing, this is called **locking**
* And many other things

func BenchmarkIndexHard2(b *testing.B) { benchmarkIndexHard(b, []byte("</pre>")) }
func BenchmarkIndexHard3(b *testing.B) { benchmarkIndexHard(b, []byte("<b>hello world</b>")) }
func BenchmarkIndexHard4(b *testing.B) {
	benchmarkIndexHard(b, []byte("<pre><b>hello</b><strong>world</strong></pre>"))
}

func BenchmarkLastIndexHard1(b *testing.B) { benchmarkLastIndexHard(b, []byte("<>")) }

/// tip

Review what each line does by clicking each number bubble in the code. 👆

///

/// warning

Make sure to **always** use the **exec form** of the `CMD` instruction, as explained below.

///

#### Use `CMD` - Exec Form { #use-cmd-exec-form }

In the same way, you can use `finally` to make sure the exit steps are executed, no matter if there was an exception or not.

{* ../../docs_src/dependencies/tutorial007.py hl[3,5] *}

## Sub-dependencies with `yield` { #sub-dependencies-with-yield }

You can have sub-dependencies and "trees" of sub-dependencies of any size and shape, and any or all of them can use `yield`.