assertThat(Files.fileTraverser().breadthFirst(rootDir)).containsExactly(rootDir);
  }

  public void testFileTraverser_nonExistingFile() throws Exception {
    File file = new File(rootDir, "file-that-doesnt-exist");

    assertThat(Files.fileTraverser().breadthFirst(file)).containsExactly(file);
  }

  public void testFileTraverser_file() throws Exception {
    File file = newFile("some-file");

    start();
  }

  /*
   * TODO: b/318391980 - Once we test only under Java 20 and higher, avoid calling Thread.stop. As
   * of Java 20, it always throws an exception, and as of Java 26, the method does not even exist.
   * For now, we continue using it to clean up under older JDKs.
   *
   * Our usages should at least be *relatively* safe: Typically, threads started by a test are dying

        directoryLeaseManager.requestDirectoryLease(directoryPath, DirectoryLeaseState.DIRECTORY_READ_HANDLE,
                DirectoryCacheScope.IMMEDIATE_CHILDREN);

        // Now cache entry should exist
        DirectoryCacheEntry entry = directoryLeaseManager.getCacheEntry(directoryPath);
        assertNotNull(entry);
        assertEquals(directoryPath, entry.getDirectoryPath());
    }

    @Test

            assertTrue("Constructor with required parameters exists", true);
        } catch (final NoSuchMethodException e) {
            fail("Constructor with RequestManager, UserMessagesCreator, and Class[] parameters should exist");
        }
    }

    @Test
    public void test_classStructure() {
        // Verify the class is generic

    }
  }

  public void testNoNullValues() {
    for (StandardSystemProperty property : StandardSystemProperty.values()) {
      // Even though the contract in System.getProperties() specifies that a value will exist for
      // all of the listed keys, for some reason the "java.compiler" key returns null in some JVMs.
      if (property == JAVA_COMPILER) {
        continue;
      }
      // Removed in Java 9:

        // Then
        assertNotNull(type3);
        // Note: // Note: getType() method does not exist method does not exist in Type3Message
        assertEquals(domain, type3.getDomain());
        assertEquals(username, type3.getUser());
        assertEquals(workstation, type3.getWorkstation());
    }

    @Test

# (error on undefined variables). This ensures that (a) every TFCI variable
# has an explicit default value, and (b) no script can accidentally use a
# variable that doesn't exist. Please keep this list in alphabetical order.
#
# Find usage in scripts with e.g.:
#   cd ci/official
#   ls *.sh utilities/*.sh | xargs grep -H --color=always TFCI_ARG_HERE
# You may also get an overview, e.g.:

   *
   * <p>Under Android VMs, the methods for retrieving type-use annotations don't exist. This means
   * that {@link NullPointerTester} may misbehave under Android when used on classes that rely on
   * type-use annotations.
   *
   * <p>Under j2objc, the necessary APIs exist, but some (perhaps all) return stub values, like

    assertThat(MoreFiles.fileTraverser().breadthFirst(rootDir)).containsExactly(rootDir);
  }

  public void testFileTraverser_nonExistingFile() throws Exception {
    Path file = rootDir.resolve("file-that-doesnt-exist");

    assertThat(MoreFiles.fileTraverser().breadthFirst(file)).containsExactly(file);
  }

  public void testFileTraverser_file() throws Exception {
    Path file = newFile("some-file");

    Method closeMethod;
    try {
      closeMethod = wrapper.getClass().getMethod("close");
    } catch (NoSuchMethodException e) {
      assertThat(isAndroid() || isBeforeJava19()).isTrue();
      return; // close() doesn't exist, so we can't test it.
    }
    closeMethod.invoke(wrapper);
    assertThat(delegate.isTerminated()).isTrue();
  }

  private static boolean isAndroid() {