# 测试

感谢 <a href="https://www.starlette.io/testclient/" class="external-link" target="_blank">Starlette</a>，测试**FastAPI** 应用轻松又愉快。

它基于 <a href="https://www.python-httpx.org" class="external-link" target="_blank">HTTPX</a>， 而HTTPX又是基于Requests设计的，所以很相似且易懂。

有了它，你可以直接与**FastAPI**一起使用 <a href="https://docs.pytest.org/" class="external-link" target="_blank">pytest</a>。

## 使用 `TestClient`

/// info | "信息"

    // Ideally, the extra type parameter "C" shouldn't be necessary. It is a
    // work-around of a compiler type inference quirk that prevents the
    // following code from being compiled:
    // Comparator<Class<?>> comparator = null;
    // Map<Class<? extends Throwable>, String> map = newTreeMap(comparator);
    return new TreeMap<>(comparator);
  }

  /**
   * Creates an {@code EnumMap} instance.
   *

    // Ideally, the extra type parameter "C" shouldn't be necessary. It is a
    // work-around of a compiler type inference quirk that prevents the
    // following code from being compiled:
    // Comparator<Class<?>> comparator = null;
    // Map<Class<? extends Throwable>, String> map = newTreeMap(comparator);
    return new TreeMap<>(comparator);
  }

  /**
   * Creates an {@code EnumMap} instance.
   *

<div class="termy">

```console
$ pip install fastapi

---> 100%
```

</div>

本番環境では、<a href="https://www.uvicorn.org" class="external-link" target="_blank">Uvicorn</a> または、 <a href="https://github.com/pgjones/hypercorn" class="external-link" target="_blank">Hypercorn</a>のような、 ASGI サーバーが必要になります。

<div class="termy">

```console
$ pip install "uvicorn[standard]"

---> 100%
```

</div>

import com.google.common.testing.EqualsTester;
import java.util.Set;
import org.junit.After;
import org.junit.Test;

/**
 * Abstract base class for testing undirected {@link Graph} implementations defined in this package.
 */
public abstract class AbstractStandardUndirectedGraphTest extends AbstractGraphTest {

  @After
  public void validateUndirectedEdges() {
    for (Integer node : graph.nodes()) {

		Field *schema.Field
	}
)

func (myType) QueryClauses(f *schema.Field) []clause.Interface {
	return []clause.Interface{emptyQueryClause{Field: f}}
}

func (sd emptyQueryClause) Name() string {
	return "empty"
}

func (sd emptyQueryClause) Build(clause.Builder) {
}

func (sd emptyQueryClause) MergeClause(*clause.Clause) {
}

func (sd emptyQueryClause) ModifyStatement(stmt *gorm.Statement) {

   */
  public void testLoadingExceptionWithCause() {
    final Exception cause = new Exception();
    final UncheckedExecutionException uee = new UncheckedExecutionException(cause);
    final ExecutionException ee = new ExecutionException(cause);

    LoadingCache<Object, Object> cacheUnchecked =
        CacheBuilder.newBuilder().build(exceptionLoader(uee));

    assertEquals(20, multimap.expectedValuesPerKey);
  }

  public void testCreateFromIllegalSizes() {
    assertThrows(IllegalArgumentException.class, () -> ArrayListMultimap.create(15, -2));

    assertThrows(IllegalArgumentException.class, () -> ArrayListMultimap.create(-15, 2));
  }

  public void testCreateFromHashMultimap() {
    Multimap<String, Integer> original = HashMultimap.create();

  private static boolean isProxyOfSameInterfaces(Object arg, Class<?> proxyClass) {
    return proxyClass.isInstance(arg)
        // Equal proxy instances should mostly be instance of proxyClass
        // Under some edge cases (such as the proxy of JDK types serialized and then deserialized)
        // the proxy type may not be the same.
        // We first check isProxyClass() so that the common case of comparing with non-proxy objects

    assertFalse(Files.exists(parent));
    assertThrows(IOException.class, () -> MoreFiles.createParentDirectories(file));
  }

  public void testCreateParentDirectories_nonDirectoryParentExists() throws IOException {
    Path parent = createTempFile();
    assertTrue(Files.isRegularFile(parent));
    Path file = parent.resolve("foo");
    assertThrows(IOException.class, () -> MoreFiles.createParentDirectories(file));
  }