# 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.

platforms/documentation/docs/src/docs/userguide/core-plugins/war_plugin.adoc                  @gradle/bt-devrel-education @gradle/bt-jvm
platforms/documentation/docs/src/docs/userguide/dep-man/                                      @gradle/bt-devrel-education @gradle/bt-jvm
platforms/documentation/docs/src/docs/userguide/jvm/                                          @gradle/bt-devrel-education @gradle/bt-jvm

	}

	// Only interested in flushing the size_t not mtime/atime
	if err = Fdatasync(w); err != nil {
		w.Close()
		return err
	}

	// Dealing with error returns from close() - 'man 2 close'
	//
	// A careful programmer will check the return value of close(), since it is quite possible that
	// errors on a previous write(2) operation are reported only on the final close() that releases

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