# Asynchrone Tests

Sie haben bereits gesehen, wie Sie Ihre **FastAPI**-Anwendungen mit dem bereitgestellten `TestClient` testen. Bisher haben Sie nur gesehen, wie man synchrone Tests schreibt, ohne `async`hrone Funktionen zu verwenden.

        // joint-compilation doesn't work with the Error Prone annotation processor
        extension.enabled.convention(this.name == "main")

        project.dependencies.addProvider(
            annotationProcessorConfigurationName,
            extension.enabled.filter { it }.map { "com.google.errorprone:error_prone_core:2.24.1" }
        )

        project.tasks.named<JavaCompile>(this.compileJavaTaskName) {

          </plugin>
        </plugins>
      </build>
    </profile>
    <profile>
      <id>run-error-prone</id>
      <activation>
        <!--
        Error Prone requires 11+: https://errorprone.info/docs/installation
        We skip 12-15 because of https://github.com/google/error-prone/issues/3540.
        -->
        <jdk>[11,12),[16,)</jdk>
      </activation>
      <build>
        <plugins>

/test/e2e/generated/bindata.go

# This file used by some vendor repos (e.g. github.com/go-openapi/...) to store secret variables and should not be ignored
!\.drone\.sec

/bazel-*
*.pyc

# generated by verify-vendor.sh

        api("com.github.javaparser:javaparser-symbol-solver-core:$javaParserVersion")
        api("com.google.guava:guava:27.1-jre")
        api("com.google.errorprone:error_prone_annotations:2.5.1")
        api("com.google.code.gson:gson:2.8.9")
        api("com.nhaarman:mockito-kotlin:1.6.0")
        api("com.thoughtworks.qdox:qdox:2.0.3")
        api("com.uwyn:jhighlight:1.0")

This can be reading from Kubernetes and writing other objects back, writing to proxies over XDS, etc.

Unfortunately, writing controllers is very error prone, even for seemingly simple cases.
To work around this, Istio has a variety of abstractions meant to make writing controllers easier.

## Clients

    <dependency>
      <groupId>org.checkerframework</groupId>
      <artifactId>checker-qual</artifactId>
    </dependency>
    <dependency>
      <groupId>com.google.errorprone</groupId>
      <artifactId>error_prone_annotations</artifactId>
    </dependency>
    <dependency>
      <groupId>com.google.j2objc</groupId>
      <artifactId>j2objc-annotations</artifactId>
    </dependency>
  </dependencies>
  <build>
    <resources>

	assert.NoError(t, err)
	fakeIPSetDeps.AssertExpectations(t)
}

// for tests that call `runtime.GC()` - we have no control over when the GC is actually scheduled,
// and it is flake-prone to check for closure after calling it, this retries for a bit to make
// sure the netns is closed eventually.
func assertNSClosed(t *testing.T, closed *atomic.Bool) {
	for i := 0; i < 5; i++ {
		if closed.Load() {

    <dependency>
      <groupId>org.checkerframework</groupId>
      <artifactId>checker-qual</artifactId>
    </dependency>
    <dependency>
      <groupId>com.google.errorprone</groupId>
      <artifactId>error_prone_annotations</artifactId>
    </dependency>
    <dependency>
      <groupId>com.google.j2objc</groupId>
      <artifactId>j2objc-annotations</artifactId>
    </dependency>
  </dependencies>
  <build>
    <resources>

* Sie können Metadaten aus der hochgeladenen Datei auslesen.
* Es hat eine <abbr title="dateiartig"><a href="https://docs.python.org/3/glossary.html#term-file-like-object" class="external-link" target="_blank">file-like</a></abbr> `async`hrone Schnittstelle.