checkPublicSuffix("test.ck", null)
    checkPublicSuffix("b.test.ck", "b.test.ck")
    checkPublicSuffix("a.b.test.ck", "b.test.ck")
    checkPublicSuffix("www.ck", "www.ck")
    checkPublicSuffix("www.www.ck", "www.ck")
    // US K12.
    checkPublicSuffix("us", null)
    checkPublicSuffix("test.us", "test.us")
    checkPublicSuffix("www.test.us", "test.us")
    checkPublicSuffix("ak.us", null)

    }

    @Test
    void testGetInformationLevel() {
        // Test getInformationLevel method
        response = new Trans2QueryFSInformationResponse(config, FileSystemInformation.FS_SIZE_INFO);

        assertEquals(FileSystemInformation.FS_SIZE_INFO, response.getInformationLevel());
    }

    @Test
    void testGetInfo() {
        // Test getInfo method when info is null

		},
		// Test Case - 7.
		// Test case with invalid region.
		{
			inputCredentialStr: generateCredentialStr(
				"Z7IXGOO6BZ0REAN1Q26I",
				UTCNow().Format(yyyymmdd),
				"us-west-2",
				"s3",
				"aws4_request"),
			expectedCredentials: credentialHeader{},
			expectedErrCode:     ErrAuthorizationHeaderMalformed,
		},
		// Test Case - 8.
		// Test case with invalid request version.

		expectedErr    error
		// Flag indicating whether the test is expected to pass or not.
		shouldPass bool
	}{
		// Test cases with invalid bucket names ( Test number 1-4 ).
		{".test", "", "", "", "", 0, ListMultipartsInfo{}, BucketNameInvalid{Bucket: ".test"}, false},
		{"Test", "", "", "", "", 0, ListMultipartsInfo{}, BucketNameInvalid{Bucket: "Test"}, false},

        // Test with no file path mappings
        assertEquals("test/path", emptyGenerator.expandPath("test/path"));
        assertNull(emptyGenerator.expandPath(null));

        // Test with file path mappings
        emptyGenerator.filePathMap.put("${path}/test", "/usr/bin/test");
        assertEquals("/usr/bin/test", emptyGenerator.expandPath("${path}/test"));

  }

  /**
   * This test checks an implementation dependent feature. It tests that the method {@code addEdge}
   * will silently add the missing nodes to the graph, then add the edge connecting them. We are not
   * using the proxy methods here as we want to test {@code addEdge} when the end-points are not
   * elements of the graph.
   */
  @Test
  public void addEdge_nodesNotInGraph() {

        // Test with different server
        auth.setServer("otherhost");
        assertFalse(auth.matches("ftp://hostname:21/test/aaa.html"));
        assertTrue(auth.matches("ftp://otherhost:21/test/aaa.html"));

        // Test with IP address
        auth.setServer("192.168.1.1");
        assertTrue(auth.matches("ftp://192.168.1.1:21/test/aaa.html"));
        assertTrue(auth.matches("ftp://192.168.1.1/test/aaa.html"));

  }

  /**
   * This test checks an implementation dependent feature. It tests that the method {@code addEdge}
   * will silently add the missing nodes to the graph, then add the edge connecting them. We are not
   * using the proxy methods here as we want to test {@code addEdge} when the end-points are not
   * elements of the graph.
   */
  @Test
  public void addEdge_nodesNotInGraph() {

        // Then
        assertEquals(3, maxReferralLevel);
    }

    @Test
    @DisplayName("Test with various filename formats")
    void testVariousFilenameFormats() {
        // Test UNC path
        assertDoesNotThrow(() -> new Trans2GetDfsReferral(mockConfig, "\\\\server\\share"));

        // Test forward slashes
        assertDoesNotThrow(() -> new Trans2GetDfsReferral(mockConfig, "//server/share"));

import org.junit.jupiter.api.RepeatedTest;
import org.junit.jupiter.api.Test;

/**
 * Unit tests for SimpleCircuitBreaker
 */
public class SimpleCircuitBreakerTest {

    private SimpleCircuitBreaker circuitBreaker;

    @BeforeEach
    void setUp() {
        circuitBreaker = new SimpleCircuitBreaker("test", 3, 2, 100);
    }

    @Test
    @DisplayName("Test initial state is CLOSED")
    void testInitialState() {