// Call the ServeHTTP to execute the handler, GetBucketPolicyHandler handles the request.
		apiRouter.ServeHTTP(recV4, reqV4)
		// Assert the response code with the expected status.
		if recV4.Code != testCase.expectedRespStatus {
			t.Fatalf("Case %d: Expected the response status to be `%d`, but instead found `%d`", i+1, testCase.expectedRespStatus, recV4.Code)
		}

    }
  }

  /** Helper method that asserts the arithmetic mean of x and y is equal to the expectedMean. */
  private static void assertMean(int expectedMean, int x, int y) {
    assertEquals(
        "The expectedMean should be the same as computeMeanSafely",
        expectedMean,
        computeMeanSafely(x, y));
    assertMean(x, y);
  }

  /**

 * limitations under the License.
 */

package com.google.common.testing;

import static com.google.common.truth.Truth.assertThat;
import static org.junit.Assert.assertThrows;

import com.google.common.testing.GcFinalization.FinalizationPredicate;
import com.google.common.util.concurrent.SettableFuture;
import java.lang.ref.WeakReference;
import java.util.WeakHashMap;

import static com.google.common.truth.Truth.assertThat;
import static java.nio.charset.StandardCharsets.US_ASCII;
import static java.nio.charset.StandardCharsets.UTF_8;
import static org.junit.Assert.assertThrows;

import com.google.common.collect.ImmutableList;
import com.google.common.testing.NullPointerTester;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;

🤶 Ⓜ. `pip install httpx`.

///

🗄 `TestClient`.

✍ `TestClient` 🚶‍♀️ 👆 **FastAPI** 🈸 ⚫️.

✍ 🔢 ⏮️ 📛 👈 ▶️ ⏮️ `test_` (👉 🐩 `pytest` 🏛).

⚙️ `TestClient` 🎚 🎏 🌌 👆 ⏮️ `httpx`.

✍ 🙅 `assert` 📄 ⏮️ 🐩 🐍 🧬 👈 👆 💪 ✅ (🔄, 🐩 `pytest`).

```Python hl_lines="2  12  15-18"
{!../../docs_src/app_testing/tutorial001.py!}
```

/// tip

👀 👈 🔬 🔢 😐 `def`, 🚫 `async def`.

        response_fields = {}
        for additional_status_code, response in self.responses.items():
            assert isinstance(response, dict), "An additional response must be a dict"
            model = response.get("model")
            if model:
                assert is_body_allowed_for_status_code(
                    additional_status_code

import static java.lang.System.arraycopy;
import static java.util.Arrays.asList;
import static java.util.Collections.frequency;
import static junit.framework.Assert.assertEquals;
import static junit.framework.Assert.fail;

import com.google.common.annotations.GwtCompatible;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;

	"io"
	"os"
	"path/filepath"
	"regexp"
	"strings"
	"testing"

	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
	"sigs.k8s.io/yaml"

	"istio.io/istio/istioctl/pkg/cli"
	"istio.io/istio/pkg/test/util/assert"
)

const (
	validDeploymentList = `
apiVersion: v1
items:
- apiVersion: apps/v1
  kind: Deployment
  metadata:
    labels:
      app: hello
      version: v1
    name: hello-v1
  spec:

例：`pip install httpx`.

///

导入 `TestClient`.

通过传入你的**FastAPI**应用创建一个 `TestClient` 。

创建名字以 `test_` 开头的函数（这是标准的 `pytest` 约定）。

像使用 `httpx` 那样使用 `TestClient` 对象。

为你需要检查的地方用标准的Python表达式写个简单的 `assert` 语句（重申，标准的`pytest`）。

```Python hl_lines="2  12  15-18"
{!../../docs_src/app_testing/tutorial001.py!}
```

/// tip | "提示"

注意测试函数是普通的 `def`，不是 `async def`。

还有client的调用也是普通的调用，不是用 `await`。

  }

  public void testNullCloseable() throws IOException {
    Closer closer = Closer.create();
    closer.register(null);
    closer.close();
  }

  /**
   * Asserts that an exception was thrown when trying to close each of the given throwables and that
   * each such exception was suppressed because of the given thrown exception.
   */