try {
      call.execute()
      fail("Request can't succeed")
    } catch (ioe: IOException) {
      assertThat(ioe).hasMessage("No results for google.invalid")
    }
  }

  @Test
  @Ignore("No results on CI for localhost")
  fun testDnsRequest() {
    val (allAddresses, exception) = dnsQuery("localhost")

    assertThat(exception).isNull()

If you are using third party libraries that tell you to call them with `await`, like:

```Python
results = await some_library()
```

Then, declare your *path operation functions* with `async def` like:

```Python hl_lines="2"
@app.get('/')
async def read_results():
    results = await some_library()
    return results
```

!!! note
    You can only use `await` inside of functions created with `async def`.

---

-   CPU-only, or with NVIDIA CUDA support (Linux only), or with TPUs

## How to Test Your Changes to TensorFlow

You may check how your changes will affect TensorFlow by:

1. Creating a PR and observing the presubmit test results
2. Running the CI scripts locally, as explained below
3. **Google employees only**: Google employees can use an internal-only tool
called "MLCI" that makes testing more convenient: it can execute any full CI job

                        id = "ARTIFACT_DEPENDENCY_${performanceTest.id!!}"
                        cleanDestination = true
                        val perfResultArtifactRule = """results/performance/build/test-results-*.zip!performance-tests/perf-results*.json => $performanceResultsDir/${performanceTest.bucketIndex}/"""
                        artifactRules = if (index == 0) {

```

### 3. Failure after conversion
If the conversion is successful, but the generated model is wrong, then state what is wrong:

- Model produces wrong results and/or has lesser accuracy.
- Model produces correct results, but it is slower than expected.

### 4. (optional) RNN conversion support
If converting TF RNN to TFLite fused RNN ops, please prefix [RNN] in the title.

  for (dns in dnsProviders) {
    println("Testing ${dns.url}")
    for (host in names) {
      print("$host: ")
      System.out.flush()
      try {
        val results = dns.lookup(host)
        println(results)
      } catch (uhe: UnknownHostException) {
        var e: Throwable? = uhe
        while (e != null) {
          println(e)
          e = e.cause
        }
      }
    }
    println()

import org.jetbrains.kotlin.resolve.calls.model.ResolvedCall
import org.jetbrains.kotlin.resolve.calls.results.OverloadingConflictResolver
import org.jetbrains.kotlin.resolve.calls.results.PlatformOverloadsSpecificityComparator
import org.jetbrains.kotlin.resolve.calls.results.TypeSpecificityComparator
import org.jetbrains.kotlin.resolve.calls.results.createOverloadingConflictResolver
import org.jetbrains.kotlin.resolve.calls.tower.KotlinToResolvedCallTransformer

 * [receiveRequest] in the sequence they are run.
 */
class MockStreamHandler : StreamHandler {
  private val actions = LinkedBlockingQueue<Action>()
  private val results = LinkedBlockingQueue<FutureTask<Void>>()

  fun receiveRequest(expected: String) =
    apply {
      actions += { stream ->
        val actual = stream.requestBody.readUtf8(expected.utf8Size())

interface AsyncDns {
  /**
   * Query DNS records for `hostname`, in the order they are received.
   */
  fun query(
    hostname: String,
    callback: Callback,
  )

  /**
   * Callback to receive results from the DNS Queries.
   */
  @ExperimentalOkHttpApi
  interface Callback {
    /**
     * Return addresses for a dns query for a single class of IPv4 (A) or IPv6 (AAAA).

                    super.visitObjectLiteralExpression(expression)
                    results.add(expression.objectDeclaration)
                }
            })
        }

        return results
    }