# 异步测试 { #async-tests }

您已经了解了如何使用 `TestClient` 测试 **FastAPI** 应用程序。但是到目前为止，您只了解了如何编写同步测试，而没有使用 `async` 异步函数。

在测试中能够使用异步函数可能会很有用，比如当您需要异步查询数据库的时候。想象一下，您想要测试向 FastAPI 应用程序发送请求，然后验证您的后端是否成功在数据库中写入了正确的数据，与此同时您使用了异步的数据库的库。

让我们看看如何才能实现这一点。

## pytest.mark.anyio { #pytest-mark-anyio }

如果我们想在测试中调用异步函数，那么我们的测试函数必须是异步的。 AnyIO 为此提供了一个简洁的插件，它允许我们指定一些测试函数要异步调用。

## HTTPX { #httpx }

# Async Testler { #async-tests }

Sağlanan `TestClient` ile **FastAPI** uygulamalarınızı nasıl test edeceğinizi zaten gördünüz. Şimdiye kadar yalnızca senkron testler yazdık, yani `async` fonksiyonlar kullanmadan.

Harshavardhana <******@****.***> 1725615741 -0700

	OUTPUT=$(docker exec resiliency-minio2-1 /bin/sh -c "rm /data$((DATA_DRIVE + 1))/test-bucket/initial-data/$FILE/xl.meta")
	OUTPUT=$(docker exec resiliency-minio3-1 /bin/sh -c "rm /data$((DATA_DRIVE + 2))/test-bucket/initial-data/$FILE/xl.meta")
	OUTPUT=$(docker exec resiliency-minio4-1 /bin/sh -c "rm /data$((DATA_DRIVE + 3))/test-bucket/initial-data/$FILE/xl.meta")

Shinsuke Sugaya <******@****.***> 1419757266 +0900

#!/usr/bin/env bash

set -e
set -x

export PYTHONPATH=./docs_src

 * object being tested for equality to the custom interface. {@code ForwardingObject} implements no
 * such custom interfaces directly; they are implemented only in subclasses. Therefore, forwarding
 * {@code equals} would break symmetry, as the forwarding object might consider itself equal to the
 * object being tested, but the reverse could not be true. This behavior is consistent with the

 * object being tested for equality to the custom interface. {@code ForwardingObject} implements no
 * such custom interfaces directly; they are implemented only in subclasses. Therefore, forwarding
 * {@code equals} would break symmetry, as the forwarding object might consider itself equal to the
 * object being tested, but the reverse could not be true. This behavior is consistent with the

	. "bytes"
	"syscall"
	"testing"
)

// This file tests the situation where byte operations are checking
// data very near to a page boundary. We want to make sure those
// operations do not read across the boundary and cause a page
// fault where they shouldn't.

// These tests run only on linux. The code being tested is
// not OS-specific, so it does not need to be tested on all
// operating systems.

 *
 * @author Louis Wasserman
 * @param <K> The key type of the tested multimap.
 * @param <V> The value type of the tested multimap.
 */
@GwtCompatible
@Ignore("test runners must not instantiate and run this directly, only via suites we build")
// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
@SuppressWarnings("JUnit4ClassUsedInJUnit3")
@NullMarked