# 测试数据库

您还可以使用[测试依赖项](testing-dependencies.md){.internal-link target=_blank}中的覆盖依赖项方法变更测试的数据库。

实现设置其它测试数据库、在测试后回滚数据、或预填测试数据等操作。

本章的主要思路与上一章完全相同。

## 为 SQL 应用添加测试

为了使用测试数据库，我们要升级 [SQL 关系型数据库](../tutorial/sql-databases.md){.internal-link target=_blank} 一章中的示例。

应用的所有代码都一样，直接查看那一章的示例代码即可。

本章只是新添加了测试文件。

正常的依赖项 `get_db()` 返回数据库会话。

测试时使用覆盖依赖项返回自定义数据库会话代替正常的依赖项。

本例中，要创建仅用于测试的临时数据库。

## 文件架构

Laura Kassovic <******@****.***> 1701204040 -0800

pkg testing, method (*F) Fatal(...interface{})
pkg testing, method (*F) Fatalf(string, ...interface{})
pkg testing, method (*F) Fuzz(interface{})
pkg testing, method (*F) Helper()
pkg testing, method (*F) Log(...interface{})
pkg testing, method (*F) Logf(string, ...interface{})
pkg testing, method (*F) Name() string
pkg testing, method (*F) Setenv(string, string)
pkg testing, method (*F) Skip(...interface{})

# TODO(user): Resolve cycles

NAMESPACE com.google.common.collect.testing
NAMESPACE com.google.common.collect.testing.google
NAMESPACE com.google.common.escape
NAMESPACE com.google.common.escape.testing
NAMESPACE com.google.common.io
NAMESPACE com.google.common.net
NAMESPACE com.google.common.testing

# Allow our dependencies for now.
NAMESPACE junit.framework
NAMESPACE org.junit

# ***** REAL CYCLES *****

OkHttp Testing Support
======================

This module offers utilities and support for testing OkHttp itself. It's not intended for use by

You can use the `TestClient` class to test FastAPI applications without creating an actual HTTP and socket connection, just communicating directly with the FastAPI code.

Read more about it in the [FastAPI docs for Testing](https://fastapi.tiangolo.com/tutorial/testing/).

You can import it directly from `fastapi.testclient`:

```python
from fastapi.testclient import TestClient
```

    }
}
notForAccessorGeneration {
    dependencies {
        sharedArchTestClasses(project(":internal-architecture-testing"))
    }
}

testing {
    suites {
        create("archTest", JvmTestSuite::class) {
            useJUnitJupiter()
            dependencies {
                implementation(project.dependencies.create(project))

    sourceSets = listOf(project.sourceSets["main"])
  }

  val signature: Configuration by configurations.getting
  dependencies {
    // No dependency requirements for testing-support.
    if (project.name == "okhttp-testing-support") return@dependencies

    if (project.name == "mockwebserver3-junit5") {

## Example

For a simple example, let's consider a file structure similar to the one described in [Bigger Applications](../tutorial/bigger-applications.md){.internal-link target=_blank} and [Testing](../tutorial/testing.md){.internal-link target=_blank}:

```
.
├── app
│   ├── __init__.py
│   ├── main.py
│   └── test_main.py
```

The file `main.py` would have:

```Python

import okhttp3.internal.connection.RealConnectionPool
import okhttp3.internal.http2.Http2
import okhttp3.internal.taskRunnerInternal
import okhttp3.testing.Flaky
import okhttp3.testing.PlatformRule.Companion.LOOM_PROPERTY
import okhttp3.testing.PlatformRule.Companion.getPlatformSystemProperty
import org.junit.jupiter.api.Assertions.assertEquals
import org.junit.jupiter.api.Assertions.fail