```console
// Erstelle eine Umgebungsvariable MY_NAME inline für diesen Programmaufruf
$ MY_NAME="Wade Wilson" python main.py

// main.py kann jetzt diese Umgebungsvariable lesen

Hello Wade Wilson from Python

// Die Umgebungsvariable existiert danach nicht mehr
$ python main.py

Hello World from Python
```

</div>

!!! tip "Tipp"

     */
    void addOutputDirectory(Path main, Path test, PathModularizationCache cache) throws IOException {
        if (outputModules != null) {
            throw new IllegalStateException("Output directories must be set first and only once.");
        }
        if (main != null) {
            outputModules = cache.getModuleInfo(main);
            addPathElement(outputModules.getPathType(), main);
        } else {

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

在 `main.py` 文件中你有一个 **FastAPI** app:


```Python
{!../../../docs_src/app_testing/main.py!}
```

### 测试文件

然后你会有一个包含测试的文件 `test_main.py` 。app可以像Python包那样存在（一样是目录，但有个 `__init__.py` 文件）：

``` hl_lines="5"
.
├── app
│   ├── __init__.py
│   ├── main.py
│   └── test_main.py
```

     */
    void addOutputDirectory(Path main, Path test, PathModularizationCache cache) throws IOException {
        if (outputModules != null) {
            throw new IllegalStateException("Output directories must be set first and only once.");
        }
        if (main != null) {
            outputModules = cache.getModuleInfo(main);
            addPathElement(outputModules.getPathType(), main);
        } else {

    </div>

!!! note
    The command `uvicorn main:app` refers to:

    * `main`: the file `main.py` (the Python "module").
    * `app`: the object created inside of `main.py` with the line `app = FastAPI()`.

    It is equivalent to:

    ```Python
    from main import app
    ```

!!! warning
    Uvicorn and others support a `--reload` option that is useful during development.

    public static final String RS_NONE = "none";
    public static final String RS_MAIN_COMPILE = "main-compile";
    public static final String RS_MAIN_COMPILE_PLUS_RUNTIME = "main-compilePlusRuntime";
    public static final String RS_MAIN_RUNTIME = "main-runtime";
    public static final String RS_MAIN_RUNTIME_PLUS_SYSTEM = "main-runtimePlusSystem";
    public static final String RS_TEST_COMPILE = "test-compile";

 *
 * @since 4.0.0
 */
@Experimental
@Immutable
@SuppressWarnings("checkstyle:InterfaceIsType")
public interface ProjectScope extends ExtensibleEnum {

    /**
     * Main scope.
     */
    ProjectScope MAIN = projectScope("main");

    /**
     * Test scope.
     */
    ProjectScope TEST = projectScope("test");

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

📁 `main.py` 👆 ✔️ 👆 **FastAPI** 📱:


```Python
{!../../../docs_src/app_testing/main.py!}
```

### 🔬 📁

⤴️ 👆 💪 ✔️ 📁 `test_main.py` ⏮️ 👆 💯. ⚫️ 💪 🖖 🔛 🎏 🐍 📦 (🎏 📁 ⏮️ `__init__.py` 📁):

``` hl_lines="5"
.
├── app
│   ├── __init__.py
│   ├── main.py
│   └── test_main.py
```

maven-plugin-plugin 0.1 maven-plugin Maven Integration Test Plugin A test plugin to assist testing of Maven core. 2009 maven-core-it file:///${basedir}/repo true true org.apache.maven maven-plugin-api 2.0 . pom.xml src/** src/main/resources src/main/java/org/apache/maven/plugins/coreit/ItMojo.java src/main/java/org/apache/maven/plugins/coreit/ItMojo.java package org.apache.maven.plugin.coreit; /* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE...

``` hl_lines="5"
.
├── app
│   ├── __init__.py
│   ├── main.py
│   └── test_main.py
```

Так как оба файла находятся в одной директории, для импорта объекта приложения из файла `main` в файл `test_main` Вы можете использовать относительный импорт:

```Python hl_lines="3"
{!../../../docs_src/app_testing/test_main.py!}
```

...и писать дальше тесты, как и раньше.