if mod_name in sys.modules:
        del sys.modules[mod_name]
    monkeypatch.setenv("ADMIN_EMAIL", "******@****.***")
    main_mod = importlib.import_module(mod_name)
    return TestClient(main_mod.app)


def test_settings_validation_error(mod_name: str, monkeypatch: MonkeyPatch):
    monkeypatch.delenv("ADMIN_EMAIL", raising=False)
    if mod_name in sys.modules:

    without stabilizing these new APIs first.

    Do not use these experimental APIs in modules that may be executed using a version of OkHttp
    different from the version that the module was compiled with. Do not use them in published
    libraries. Do not use them if you aren't willing to track changes to them.

 *  Breaking: Drop support for Kotlin Multiplatform.

///

## Separating tests { #separating-tests }

In a real application, you probably would have your tests in a different file.

And your **FastAPI** application might also be composed of several files/modules, etc.

### **FastAPI** app file { #fastapi-app-file }

Let's say you have a file structure as described in [Bigger Applications](bigger-applications.md){.internal-link target=_blank}:

```
.
├── app

from ...utils import needs_py310


@pytest.fixture(
    name="module",
    params=[
        pytest.param("tutorial008b_py39"),
        pytest.param("tutorial008b_py310", marks=needs_py310),
    ],
)
def get_module(request: pytest.FixtureRequest):
    mod = importlib.import_module(f"docs_src.python_types.{request.param}")
    return mod


def test_process_items(module: ModuleType):
    with patch("builtins.print") as mock_print:

                    .build();

            Document moduleADoc = Document.of(moduleAPomXml);
            Document moduleBDoc = Document.of(moduleBPomXml);

            Map<Path, Document> pomMap = new HashMap<>();
            pomMap.put(Paths.get("project", "module-a", "pom.xml"), moduleADoc);
            pomMap.put(Paths.get("project", "module-b", "pom.xml"), moduleBDoc);

        // ArtifactId may differ only for multi-module projects, in which case
        // it must match the module name from a source root in modular sources.
        boolean isMultiModule = false;
        boolean validArtifactId = Objects.equals(a1, a2);
        for (SourceRoot sr : getSourceRoots(project)) {
            Optional<String> moduleName = sr.module();
            if (moduleName.isPresent()) {

        assertEquals(3, selectors.size());
        assertTrue(selectors.contains(":module-a"), "Expected selectors " + selectors + " to contain :module-a");
        assertTrue(selectors.contains(":module-b"), "Expected selectors " + selectors + " to contain :module-b");
        assertTrue(selectors.contains(":module-c"), "Expected selectors " + selectors + " to contain :module-c");
    }

    @Test

			<artifactId>tika-parser-apple-module</artifactId>
			<version>${tika.version}</version>
		</dependency>
		<dependency>
			<groupId>org.apache.tika</groupId>
			<artifactId>tika-parser-audiovideo-module</artifactId>
			<version>${tika.version}</version>
		</dependency>
		<dependency>
			<groupId>org.apache.tika</groupId>
			<artifactId>tika-parser-cad-module</artifactId>
			<version>${tika.version}</version>

        <executions>
          <execution>
            <id>attach-gradle-module-metadata</id>
            <goals>
              <goal>attach-artifact</goal>
            </goals>
            <configuration>
              <artifacts>
                <artifact>
                  <file>target/publish/module.json</file>
                  <type>module</type>
                </artifact>
              </artifacts>

    return mod


def test_get_db(module: ModuleType):
    app = FastAPI()

    @app.get("/")
    def read_root(c: Annotated[Any, Depends(module.dependency_c)]):
        return {"c": str(c)}

    client = TestClient(app)

    a_mock = Mock()
    b_mock = Mock()
    c_mock = Mock()

    with (
        patch(
            f"{module.__name__}.generate_dep_a",
            return_value=a_mock,