void nameBasedFilterTxt(String name, boolean expected) throws Exception {
        SmbFilenameFilter filter = (dir, n) -> n != null && n.toLowerCase().endsWith(".txt");

        boolean result = filter.accept(mockDir, name);

        assertEquals(expected, result, "Filter should evaluate .txt suffix correctly");
        verifyNoInteractions(mockDir);
    }

    /**

			for _, sz := range test.sizes {
				h.add(sz)
			}
			got := h.toMap()
			exp := test.want
			// what is in exp is in got
			for k := range exp {
				if exp[k] != got[k] {
					t.Fatalf("interval %s: Expected %d values but got %d values\n", k, exp[k], got[k])
				}
			}
			// what is absent in exp is absent in got too
			for k := range got {
				if _, ok := exp[k]; !ok && got[k] > 0 {

			if err != nil && !testCase.expectErr {
				t.Fatalf("unexpected err; %v", err)
			}
			if testCase.expectErr && err == nil {
				t.Fatal("expected to fail but err is nil")
			}
			if !reflect.DeepEqual(iostats, testCase.expectedIOStats) {
				t.Fatalf("expected iostats: %v but got %v", testCase.expectedIOStats, iostats)
			}
		})
	}

        else -> testData.base!!.toHttpUrl().resolve(testData.input!!)
      }

    if (testData.expectParseFailure()) {
      assertThat(url, "Expected URL to fail parsing").isNull()
      return
    }

    assertThat(url, "Expected URL to parse successfully, but was null")
      .isNotNull()
    val effectivePort =
      when {
        url!!.port != defaultPort(url.scheme) -> Integer.toString(url.port)

    try {
      entrySet.add((Entry<K, V>) entryToAdd);
      fail("Expected UnsupportedOperationException or NullPointerException.");
    } catch (UnsupportedOperationException | NullPointerException e) {
      // Expected.
    }
    assertInvariants(map);

    try {
      entrySet.addAll(singleton((Entry<K, V>) entryToAdd));
      fail("Expected UnsupportedOperationException or NullPointerException.");

<!--- Provide a general summary of the issue in the Title above -->

## Expected Behavior
<!--- If you're describing a bug, tell us what should happen -->
<!--- If you're suggesting a change/improvement, tell us how it should work -->

## Current Behavior
<!--- If describing a bug, tell us what happens instead of the expected behavior -->
<!--- If suggesting a change/improvement, explain the difference from current behavior -->

    void testGetErrorString(int errorClass, int errorCode, String expectedMessage) {
        assertEquals(expectedMessage, NbtException.getErrorString(errorClass, errorCode),
                "The error string should match the expected message for given error class and code");
    }

    /**
     * Provides arguments for the testGetErrorString parameterized test.
     * Covers all defined error classes and codes, including default cases.
     */

        @MethodSource("flagsProvider")
        void verifiesCreateDisposition(int flags, int expected) {
            SmbComNTCreateAndX req = createRequest(flags, 0);
            // Use reflection to read the private field createDisposition
            int actual = (int) getPrivateField(req, "createDisposition");
            assertEquals(expected, actual, "createDisposition should match");
        }
    }

    @Test

      throw new AssertionError(
          "expected to throw " + expectedThrowable.getSimpleName() + " but threw " + t, t);
    }
    if (userPassedSupplier) {
      throw new AssertionError(
          "expected to throw "
              + expectedThrowable.getSimpleName()
              + " but returned result: "
              + result);
    } else {
      throw new AssertionError("expected to throw " + expectedThrowable.getSimpleName());

      throw new AssertionError(
          "expected to throw " + expectedThrowable.getSimpleName() + " but threw " + t, t);
    }
    if (userPassedSupplier) {
      throw new AssertionError(
          "expected to throw "
              + expectedThrowable.getSimpleName()
              + " but returned result: "
              + result);
    } else {
      throw new AssertionError("expected to throw " + expectedThrowable.getSimpleName());