### **FastAPI** アプリファイル

**FastAPI** アプリに `main.py` ファイルがあるとします:

{* ../../docs_src/app_testing/main.py *}

### テストファイル

次に、テストを含む `test_main.py` ファイルを作成し、`main` モジュール (`main.py`) から `app` をインポートします:

{* ../../docs_src/app_testing/test_main.py *}

## テスト: 例の拡張

次に、この例を拡張し、詳細を追加して、さまざまなパーツをテストする方法を確認しましょう。


### 拡張版 **FastAPI** アプリファイル

**FastAPI** アプリに `main_b.py` ファイルがあるとします。

            // Test with mock
            when(mockReferralData.getDomain()).thenReturn(domain);
            assertEquals(domain, mockReferralData.getDomain());
            verify(mockReferralData, times(1)).getDomain();

            // Test with concrete implementation
            String concreteDomain = concreteImplementation.getDomain();
            // Should be DOMAIN based on our initialization

import pytest


def test_main():
    with pytest.warns(DeprecationWarning):
        from docs_src.app_testing.tutorial003_py39 import test_read_items

        response.getServerData().encryptionKeyLength = 8;
        // Use reflection to set protected byteCount field
        setByteCount(response, 8);
        response.getServerData().oemDomainName = "TEST_DOMAIN";

        String result = response.toString();
        assertNotNull(result);
        assertTrue(result.contains("SmbComNegotiateResponse"));
        assertTrue(result.contains("dialectIndex=0"));

from fastapi.testclient import TestClient
from inline_snapshot import snapshot

from docs_src.behind_a_proxy.tutorial004_py39 import app

client = TestClient(app)


def test_main():
    response = client.get("/app")
    assert response.status_code == 200
    assert response.json() == {"message": "Hello World", "root_path": "/api/v1"}


def test_openapi_schema():
    response = client.get("/openapi.json")

app = FastAPI(openapi_prefix="/api/v1")


@app.get("/app")
def read_main(request: Request):
    return {"message": "Hello World", "root_path": request.scope.get("root_path")}


client = TestClient(app)


def test_main():
    response = client.get("/app")
    assert response.status_code == 200
    assert response.json() == {"message": "Hello World", "root_path": "/api/v1"}


def test_openapi():

import os
import shutil

from fastapi.testclient import TestClient


def test_main():
    if os.path.isdir("./static"):  # pragma: nocover
        shutil.rmtree("./static")
    if os.path.isdir("./templates"):  # pragma: nocover
        shutil.rmtree("./templates")
    shutil.copytree("./docs_src/templates/templates/", "./templates")
    shutil.copytree("./docs_src/templates/static/", "./static")

import pytest

from docs_src.async_tests.app_a_py39.test_main import test_root


@pytest.mark.anyio
async def test_async_testing():

package main

import (
	"bufio"
	"bytes"
	"internal/testenv"
	"os"
	"path/filepath"
	"runtime"
	"strings"
	"testing"
)

// TestMain executes the test binary as the addr2line command if
// GO_ADDR2LINETEST_IS_ADDR2LINE is set, and runs the tests otherwise.
func TestMain(m *testing.M) {
	if os.Getenv("GO_ADDR2LINETEST_IS_ADDR2LINE") != "" {
		main()
		os.Exit(0)
	}

from fastapi.testclient import TestClient

from docs_src.behind_a_proxy.tutorial001_py39 import app

client = TestClient(app, root_path="/api/v1")


def test_main():
    response = client.get("/app")
    assert response.status_code == 200
    assert response.json() == {"message": "Hello World", "root_path": "/api/v1"}


def test_openapi():
    response = client.get("/openapi.json")
    assert response.status_code == 200