mu := NewDRWMutex(ds, "test-unlock-panic-2")
	defer func() {
		if recover() == nil {
			t.Fatalf("unlock of unlocked RWMutex did not panic")
		}
		mu.RUnlock(t.Context()) // Unlock, so -test.count > 1 works
	}()
	mu.RLock(id, source)
	mu.Unlock(t.Context())
}

// Borrowed from rwmutex_test.go
func TestRUnlockPanic(t *testing.T) {
	defer func() {
		if recover() == nil {

		// Initialize accumulator
		e.aggregate = newAggVal(funcName)

		var exprA qProp
		if funcName == aggFnCount {
			if e.Count.StarArg {
				return qProp{isAggregation: true}
			}

			exprA = e.Count.ExprArg.analyze(s)
		} else {
			if len(e.SFunc.ArgsList) != 1 {
				return qProp{err: fmt.Errorf("%s takes exactly one argument", funcName)}
			}

          CONSTANT_VALUES_PAIRED_STATS);

  // Helper methods:

  static void assertStatsApproxEqual(Stats expectedStats, Stats actualStats) {
    assertThat(actualStats.count()).isEqualTo(expectedStats.count());
    if (expectedStats.count() == 0) {
      try {
        actualStats.mean();
        fail("Expected IllegalStateException");
      } catch (IllegalStateException expected) {
      }
      try {

    }
    ```

    This above code relies on this `responseCount` extension val:

    ```kotlin
    val Response.responseCount: Int
      get() = generateSequence(this) { it.priorResponse }.count()
    ```
=== ":material-language-java: Java"
    ```java
      private final OkHttpClient client;

      public Authenticate() {
        client = new OkHttpClient.Builder()

    for (int i = 0; i < reps; i++) {
      // TODO(b/145386688): This access should be guarded by 'this.segment', which is not currently
      // held
      segment.removeEntryFromChain(chain, head);
      dummy += segment.count;
    }
    return dummy;
  }

    * waiting for the request to be satisfied. It will continually refresh the certificate

  * Create clusters with GPUs in GCE by specifying `type=<gpu-type>,count=<gpu-count>` to NODE_ACCELERATORS environment variable. ([#45130](https://github.com/kubernetes/kubernetes/pull/45130), [@vishh](https://github.com/vishh))

  // Example taken from twitter/hpack DecoderTest.testInsidiousMaxHeaderSize
  @Test
  fun readHeaderTableStateChangeInsidiousMaxHeaderByteCount() {
    bytesIn.writeByte(0x3f)
    bytesIn.write("e1ffffff07".decodeHex()) // count = -2147483648
    assertFailsWith<IOException> {
      hpackReader!!.readHeaders()
    }.also { expected ->
      assertThat(expected.message)
        .isEqualTo("Invalid dynamic table size update -2147483648")
    }

----------------------------

Or in `~/.gradle/gradle.properties`:

----------------------------
systemProp.tests.jvms=8
----------------------------

Its difficult to pick the "right" number here. Hypercores don't count for CPU
intensive tests and you should leave some slack for JVM-internal threads like
the garbage collector. And you have to have enough RAM to handle each JVM.

=== Test compatibility.

   * allocated, the value of {@code metadata} combines the number of bits in the "short hash", in
   * its bottom {@value CompactHashing#HASH_TABLE_BITS_MAX_BITS} bits, with a modification count in
   * the remaining bits that is used to detect concurrent modification during iteration.
   */
  private transient int metadata;

  /** The number of elements contained in the set. */
  private transient int size;

      new TensorSliceReader::VarToDataTypeMap);
  v2_reader_->Seek(kHeaderEntryKey);
  for (v2_reader_->Next(); v2_reader_->Valid(); v2_reader_->Next()) {
    if (filtered_keys.count(string(v2_reader_->key())) > 0) continue;
    CHECK(entry.ParseFromString(v2_reader_->value()))
        << entry.InitializationErrorString();
    string key(v2_reader_->key());