} else {
      assertThrows(UnsupportedOperationException.class, () -> map.clear());
    }
    assertInvariants(map);
  }

  @J2ktIncompatible // https://youtrack.jetbrains.com/issue/KT-58242/ undefined behavior (crash)
  public void testContainsKey() {
    Map<K, V> map;
    K unmappedKey;
    try {
      map = makePopulatedMap();
      unmappedKey = getKeyNotInPopulatedMap();
    } catch (UnsupportedOperationException e) {

      We could probably have resumed it after https://github.com/google/guava/pull/6664.
      But it's always weird that published poms reference test-only libraries at all, so I'm not in any rush to do so.
      -->
    </dependencies>
  </dependencyManagement>
  <profiles>
    <profile>
        <id>sonatype-oss-release</id>
        <build>
          <plugins>
            <plugin>

      We could probably have resumed it after https://github.com/google/guava/pull/6664.
      But it's always weird that published poms reference test-only libraries at all, so I'm not in any rush to do so.
      -->
    </dependencies>
  </dependencyManagement>
  <profiles>
    <profile>
        <id>sonatype-oss-release</id>
        <build>
          <plugins>
            <plugin>

    } else {
      assertThrows(UnsupportedOperationException.class, () -> map.clear());
    }
    assertInvariants(map);
  }

  @J2ktIncompatible // https://youtrack.jetbrains.com/issue/KT-58242/ undefined behavior (crash)
  public void testContainsKey() {
    Map<K, V> map;
    K unmappedKey;
    try {
      map = makePopulatedMap();
      unmappedKey = getKeyNotInPopulatedMap();
    } catch (UnsupportedOperationException e) {

- Kube-apiserver: fixes a potential crash serving CustomResourceDefinitions that combine an invalid schema and CEL validation rules. ([#126167](https://github.com/kubernetes/kubernetes/pull/126167), [@cici37](https://github.com/cici37)) [SIG API Machinery and Testing]

- Fixed a bug in the scheduler where it would crash when prefilter returns a non-existent node. ([#124933](https://github.com/kubernetes/kubernetes/pull/124933), [@AxeZhan](https://github.com/AxeZhan)) [SIG Scheduling and Testing]

}

type dataAndEOFReader string

func (r dataAndEOFReader) Read(p []byte) (int, error) {
	return copy(p, r), io.EOF
}

func TestPeekThenUnreadRune(t *testing.T) {
	// This sequence used to cause a crash.
	r := NewReader(strings.NewReader("x"))
	r.ReadRune()
	r.Peek(1)
	r.UnreadRune()
	r.ReadRune() // Used to panic here
}

var testOutput = []byte("0123456789abcdefghijklmnopqrstuvwxy")

- Fixes 1.31 regression that can crash kube-controller-manager's service-lb-controller loop ([#128182](https://github.com/kubernetes/kubernetes/pull/128182), [@carlory](https://github.com/carlory)) [SIG API Machinery, Cloud Provider and Network]

- Kube-apiserver: fixes a potential crash serving CustomResourceDefinitions that combine an invalid schema and CEL validation rules. ([#126167](https://github.com/kubernetes/kubernetes/pull/126167), [@cici37](https://github.com/cici37)) [SIG API Machinery and Testing]

- Kube-apiserver: fixes a potential crash serving CustomResourceDefinitions that combine an invalid schema and CEL validation rules. ([#126167](https://github.com/kubernetes/kubernetes/pull/126167), [@cici37](https://github.com/cici37)) [SIG API Machinery and Testing]