{!../../docs_src/app_testing/tutorial001.py!}
```

/// tip

👀 👈 🔬 🔢 😐 `def`, 🚫 `async def`.

 & 🤙 👩‍💻 😐 🤙, 🚫 ⚙️ `await`.

👉 ✔ 👆 ⚙️ `pytest` 🔗 🍵 🤢.

///

/// note | "📡 ℹ"

👆 💪 ⚙️ `from starlette.testclient import TestClient`.

**FastAPI** 🚚 🎏 `starlette.testclient` `fastapi.testclient` 🏪 👆, 👩‍💻. ✋️ ⚫️ 👟 🔗 ⚪️➡️ 💃.

///

/// tip

            determineSubProjectClassTimes(testCoverage, buildProjectClassTimes)?.toMutableMap() ?: return validSubprojects.map { SmallSubprojectBucket(it, ParallelizationMethod.None) }

        validSubprojects.forEach {
            if (!subProjectToClassTimes.containsKey(it.name)) {
                subProjectToClassTimes[it.name] = emptyList()
            }
        }

        val parallelizationMethod = when (testCoverage.os) {
            Os.LINUX -> ParallelizationMethod.TestDistribution
            else -> ParallelizationMethod.None
        }

        return FunctionalTest(
            model,
            testCoverage.getBucketUuid(model, bucketIndex),
            "${testCoverage.asName()} ($startInclusive <= gradle <$endExclusive)",

        tasks.named("test", Test.class).configure(task -> {
            task.getInputs().file(extension.getReleaseNotes().getRenderedDocumentation()).withPropertyName("releaseNotes").withPathSensitivity(PathSensitivity.NONE);

            task.getInputs().property("systemProperties", Collections.emptyMap());
            // TODO: This breaks the provider

   *
   * <p>If the mapped elements contain duplicates (according to {@link Object#equals}), the element
   * will be added more than once, with the count summed over all appearances of the element.
   *
   * <p>Note that {@code stream.collect(toMultiset(function, e -> 1, supplier))} is equivalent to
   * {@code stream.map(function).collect(Collectors.toCollection(supplier))}.
   *
   * <p>To collect to an {@link ImmutableMultiset}, use {@link

   *
   * <p>If the mapped elements contain duplicates (according to {@link Object#equals}), the element
   * will be added more than once, with the count summed over all appearances of the element.
   *
   * <p>Note that {@code stream.collect(toMultiset(function, e -> 1, supplier))} is equivalent to
   * {@code stream.map(function).collect(Collectors.toCollection(supplier))}.
   *
   * <p>To collect to an {@link ImmutableMultiset}, use {@link

    return try {
      // Attempt to get the trust manager from an OpenJDK socket factory. We attempt this on all
      // platforms in order to support Robolectric, which mixes classes from both Android and the
      // Oracle JDK. Note that we don't support HTTP/2 or other nice features on Robolectric.
      val sslContextClass = Class.forName("sun.security.ssl.SSLContextImpl")

    }

    fun build(): CacheControl = commonBuild()
  }

  companion object {
    /**
     * Cache control request directives that require network validation of responses. Note that such
     * requests may be assisted by the cache via conditional GET requests.
     */
    @JvmField
    val FORCE_NETWORK = commonForceNetwork()

    /**

     * Wait for the interrupting thread to set DONE. (See interruptTask().) We want to wait so that
     * the interrupting thread doesn't interrupt the _next_ thing to run on this thread.
     *
     * Note: We don't reset the interrupted bit, just wait for it to be set. If this is a thread
     * pool thread, the thread pool will reset it for us. Otherwise, the interrupted bit may have

   * during {@code Executor.execute} (e.g., a {@code RejectedExecutionException} or an exception
   * thrown by {@linkplain MoreExecutors#directExecutor direct execution}) will be caught and
   * logged.
   *
   * <p>Note: If your listener is lightweight -- and will not cause stack overflow by completing
   * more futures or adding more {@code directExecutor()} listeners inline -- consider {@link