**FastAPI** 提供了和 `starlette.testclient` 一样的 `fastapi.testclient`，只是为了方便开发者。但它直接来自Starlette。

///

/// tip | 提示

除了发送请求之外，如果你还想测试时在FastAPI应用中调用 `async` 函数（例如异步数据库函数）， 可以在高级教程中看下 [Async Tests](../advanced/async-tests.md){.internal-link target=_blank} 。

///

## 分离测试

在实际应用中，你可能会把你的测试放在另一个文件里。

您的**FastAPI**应用程序也可能由一些文件/模块组成等等。

### **FastAPI** app 文件

    return FluentIterable.from(ImmutableList.<Number>of());
  }

  /*
   * The following tests demonstrate the shortcomings of or() and test that the casting workaround
   * mentioned in the method Javadoc does in fact compile.
   */

  @SuppressWarnings("unused") // compilation test
  public void testSampleCodeError1() {
    Optional<Integer> optionalInt = getSomeOptionalInt();

                    assertTrue(url.contains("test/dir1") || url.contains("test/dir2") || url.contains("test/text1.txt")
                            || url.contains("test/text2.txt") || url.contains("test/text%203.txt"));
                }
            }
        }

    }

    public void test_doGet_file() throws Exception {
        final File file = ResourceUtil.getResourceAsFile("test/text1.txt");

		},
		{
			filter:  fiLtAndGt,
			objSize: 100*humanize.MiByte + 1,
			want:    false,
		},
	}
	for i, test := range tests {
		t.Run(fmt.Sprintf("Test %d", i+1), func(t *testing.T) {
			if got := test.filter.BySize(test.objSize); got != test.want {
				t.Fatalf("Expected %v but got %v", test.want, got)
			}
		})
	}
}

func TestTestTags(t *testing.T) {
	noTags := Filter{
		set: true,

			}
		})
	}

	// Test when the GlobalKMS is configured but the credentials are invalid
	GlobalKMS = kms.NewStub("default-test-key")
	for _, test := range tests {
		t.Run(test.name+" invalid credentials", func(t *testing.T) {
			req := buildKMSRequest(t, test.method, test.path, userAccessKey, userSecretKey, test.query)
			rec := httptest.NewRecorder()

		{9, 2, false, 16},
	}
	for i, tt := range tests {
		err := validateParity(tt.ssParity, tt.rrsParity, tt.setDriveCount)
		if err != nil && tt.success {
			t.Errorf("Test %d, Expected success, got %s", i+1, err)
		}
		if err == nil && !tt.success {
			t.Errorf("Test %d, Expected failure, got success", i+1)
		}
	}
}

func TestParityCount(t *testing.T) {
	tests := []struct {
		sc             string

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;

/**
 * Unit tests for WitnessNotification class.
 */
public class WitnessNotificationTest {

    private WitnessNotification notification;

    @BeforeEach
    void setUp() {
        notification = new WitnessNotification(WitnessEventType.CLIENT_MOVE, "TestResource");
    }

    @Test
    void testNotificationCreation() {

import static org.mockito.Mockito.when;

import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.ValueSource;
import org.mockito.junit.jupiter.MockitoExtension;

/**
 * Unit tests for {@link NdrHyper}.
 * <p>
 * The class only contains an encode/decode pair that delegates to

mvn jdeb:jdeb        # .deb package
```

### Testing
```bash
# Run unit tests (*Test.java)
mvn test

# Run single unit test
mvn test -Dtest=SearchEngineClientTest

# Run integration tests (*Tests.java in src/test/java/org/codelibs/fess/it/)
# Requires Fess server and OpenSearch running
mvn test -P integrationTests -Dtest.fess.url="http://localhost:8080" -Dtest.search_engine.url="http://localhost:9201"

import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Nested;
import org.junit.jupiter.api.Test;

/**
 * Unit tests for {@link SmbFileFilter}. The filter interface is small; the
 * tests focus on the contract that implementations should honour and the
 * interaction with {@link SmbFile} instances. The tests make heavy use of
 * Mockito to guarantee that implementation classes do not inadvertently
 * bypass the filter logic.