Iterator<Integer> iterator = bimap.keySet().iterator();
    iterator.next();
    iterator.next();
    iterator.remove();
    iterator.next();
    iterator.remove();
    assertEquals(1, bimap.size());
    assertEquals(1, bimap.inverse().size());
  }

  @SuppressWarnings("IdentityHashMapBoxing") // explicitly testing IdentityHashMap
  public void testIdentityEntrySetIteratorRemove() {
    BiMap<Integer, String> bimap =

    assertEquals("Should be able to peek() at first element", "A", peekingIterator.peek());
    assertEquals(
        "Should be able to peek() first element multiple times", "A", peekingIterator.peek());
    assertEquals(
        "next() should still return first element after peeking", "A", peekingIterator.next());

        NbtAddress[] addresses = (NbtAddress[]) addressArrayField.get(response);

        assertEquals(0, addresses[0].nodeType); // B-node
        assertEquals(1, addresses[1].nodeType); // P-node
        assertEquals(2, addresses[2].nodeType); // M-node
        assertEquals(3, addresses[3].nodeType); // H-node
    }

        assertEquals(100, mockResponse.getGrantedCredits());

        // Verify the method was called
        verify(mockResponse, times(1)).getGrantedCredits();
    }

    @Test
    void testGetErrorCode() {
        // Simulate error code
        when(mockResponse.getErrorCode()).thenReturn(-1);
        assertEquals(-1, mockResponse.getErrorCode());

        // Verify the class is generic
        final java.lang.reflect.TypeVariable<?>[] typeParameters = FessActionValidator.class.getTypeParameters();
        assertEquals("Should have one type parameter", 1, typeParameters.length);
        assertEquals("Type parameter should be MESSAGES", "MESSAGES", typeParameters[0].getName());
    }

    @Test
    public void test_packageStructure() {

        // Verify fields resolved
        assertEquals("alice", s1.getAccountName());
        assertEquals("TESTDOM", s1.getDomainName());
        assertEquals(jcifs.SID.SID_TYPE_USER, s1.getType());

        assertEquals("Domain Users", s2.getAccountName());
        assertEquals("TESTDOM", s2.getDomainName());
        assertEquals(jcifs.SID.SID_TYPE_DOM_GRP, s2.getType());

        UserRoleLoginException exception3 = new UserRoleLoginException(AdminAction.class);

        assertEquals(RootAction.class, exception1.getActionClass());
        assertEquals(TestAction.class, exception2.getActionClass());
        assertEquals(AdminAction.class, exception3.getActionClass());

        // Verify they are all RootAction or subclasses

        int used = nullPathCmd.writeBytesWireFormat(buffer, 0);
        // Should write command byte + null terminator only
        assertEquals(2, used, "Null path should result in command byte + NUL");
        assertEquals(0x04, buffer[0] & 0xFF, "First byte must still be 0x04");
        assertEquals(0, buffer[1], "Second byte must be null terminator");
    }

    @Test
    @DisplayName("writeBytesWireFormat handles empty string gracefully")

      for (RoundingMode mode : asList(HALF_EVEN, HALF_UP, HALF_DOWN)) {
        double x = Math.scalb(Math.sqrt(2) + 0.001, exp);
        double y = Math.scalb(Math.sqrt(2) - 0.001, exp);
        assertEquals(exp + 1, DoubleMath.log2(x, mode));
        assertEquals(exp, DoubleMath.log2(y, mode));
      }
    }
  }

  @GwtIncompatible // DoubleMath.log2(double, RoundingMode)
  public void testRoundLog2Exact() {

        // Verify the correct number of bytes were read (37 bytes total)
        assertEquals(37, bytesRead);

        // Verify values through reflection
        Field totalParamField = response.getClass().getSuperclass().getSuperclass().getDeclaredField("totalParameterCount");
        totalParamField.setAccessible(true);
        assertEquals(1000, totalParamField.get(response));