public void testPut_nullKeyUnsupported() {
    assertThrows(NullPointerException.class, () -> put(nullKeyEntry));
    expectUnchanged();
    expectNullKeyMissingWhenNullKeysUnsupported(
        "Should not contain null key after unsupported put(null, value)");
  }

  @MapFeature.Require({SUPPORTS_PUT, ALLOWS_NULL_VALUES})
  public void testPut_nullValueSupported() {

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE components PUBLIC "-//DBFLUTE//DTD LastaDi 1.0//EN"
	"http://dbflute.org/meta/lastadi10.dtd">
<components namespace="fessCrawler">
	<include path="crawler/container.xml" />

	<component name="intervalController"
		class="org.codelibs.fess.crawler.interval.FessIntervalController"
		instance="prototype">
	</component>

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE components PUBLIC "-//DBFLUTE//DTD LastaDi 1.0//EN"
	"http://dbflute.org/meta/lastadi10.dtd">
<components namespace="fessCrawler">
	<include path="crawler/container.xml" />

	<component name="urlFilter"
		class="org.codelibs.fess.crawler.filter.impl.UrlFilterImpl" instance="prototype">
	</component>

    testers.add(SortedMapNavigationTester.class);
    return testers;
  }

  @Override
  public TestSuite createTestSuite() {
    if (!getFeatures().contains(KNOWN_ORDER)) {
      List<Feature<?>> features = copyToList(getFeatures());
      features.add(KNOWN_ORDER);
      withFeatures(features);
    }
    return super.createTestSuite();
  }

  @Override

for whl_tag in $TFCI_INSTALLER_WHL_TAGS; do
  echo "Generating a PyPI upload compatible wheel for ${whl_tag}"
  echo ""
  # Unpacking a wheel creates a directory named
  # {distribution}-{version}.dist-info which contains the metadata files. We
  # replace the old tag in the WHEEL file in this directory with the new tag we
  # have in ${whl_tag}. Replace the line in WHEEL that starts with "Tag:" with
  # "Tag: <new whl tag>"

    assertTrue(map.entrySet().contains(immutableEntry(TypeToken.of(Integer.class), null)));
    assertThat(map.get(TypeToken.of(Integer.class))).isNull();
    assertThat(map.getInstance(Integer.class)).isNull();

    map.putInstance(Long.class, null);
    assertTrue(map.containsKey(TypeToken.of(Long.class)));
    assertTrue(map.entrySet().contains(immutableEntry(TypeToken.of(Long.class), null)));

  }

  public void testContains() {
    assertThat(Ints.contains(EMPTY, (int) 1)).isFalse();
    assertThat(Ints.contains(ARRAY1, (int) 2)).isFalse();
    assertThat(Ints.contains(ARRAY234, (int) 1)).isFalse();
    assertThat(Ints.contains(new int[] {(int) -1}, (int) -1)).isTrue();
    assertThat(Ints.contains(ARRAY234, (int) 2)).isTrue();
    assertThat(Ints.contains(ARRAY234, (int) 3)).isTrue();

            // Note: There's a typo in the original code - "Opblock" instead of "Oplock"
            assertTrue(result.startsWith("Smb2OpblockBreakNotification["));
            assertTrue(result.contains("oplockLevel=" + oplockLevel));
            assertTrue(result.contains("fileId=" + Hexdump.toHexString(fileId)));
            assertTrue(result.endsWith("]"));
        }

        @Test
        @DisplayName("Should handle null fileId in toString")

            smbComTreeDisconnect = new SmbComTreeDisconnect(null);
        });

        // Verify the exception message indicates the config is null
        assertTrue(exception.getMessage().contains("config"));
    }

    /**
     * Test constructor with mock configuration
     */
    @Test
    @DisplayName("Test constructor with mock configuration")
    public void testConstructorWithMockConfig() {

```

</details>

## 什么是容器 { #what-is-a-container }

容器（主要是 Linux 容器）是一种非常**轻量**的方式，用来打包应用及其所有依赖和必要文件，并让它们与同一系统中的其他容器（其他应用或组件）相互隔离。

Linux 容器复用宿主机（物理机、虚拟机、云服务器等）的同一个 Linux 内核。这意味着它们非常轻量（相较于模拟整个操作系统的完整虚拟机）。

因此，容器消耗的**资源很少**，大致相当于直接运行进程（而虚拟机会多很多）。

容器还拥有各自**隔离**的运行进程（通常只有一个）、文件系统和网络，简化了部署、安全、开发等。

## 什么是容器镜像 { #what-is-a-container-image }

**容器**是从**容器镜像**运行的。