}

  @J2ktIncompatible
  @GwtIncompatible // NullPointerTester
  public void testNullPointers() {
    NullPointerTester tester = new NullPointerTester();
    tester.testAllPublicStaticMethods(ImmutableMultiset.class);
  }

  @J2ktIncompatible
  @GwtIncompatible // SerializableTester
  public void testSerialization_empty() {

### Testy

* Pomóż mi sprawdzić, czy PR ma **testy**.

* Sprawdź, czy testy **nie przechodzą** przed PR. 🚨

* Następnie sprawdź, czy testy **przechodzą** po PR. ✅

* Wiele PR-ów nie ma testów, możesz **przypomnieć** im o dodaniu testów, a nawet **zaproponować** samemu jakieś testy. To jedna z rzeczy, które pochłaniają najwięcej czasu i możesz w tym bardzo pomóc.

        assertEquals(expected, props2);
    }

    /**
     * <p>
     * Test getting property.
     * </p>
     *
     * @throws Exception
     */
    @Test
    public void testGettingProperty() throws Exception {
        Object o2 = properties.get("test");
        assertEquals("test", o2);
    }

    @Test
    public void testLoadSave() throws IOException {

            attributes.put("snippetsPath", "snippets");
            // Make sure the 'raw' location of the samples is available in all AsciidoctorTasks to access files with expected outputs in the 'tests' folder for inclusion in READMEs
            attributes.put("samplesPath", extension.getUserManual().getStagingRoot().dir("raw/samples").get().getAsFile());
            task.attributes(attributes);
        });

You also get error checks for incorrect type operations:

<img src="/img/tutorial/body/image04.png">

This is not by chance, the whole framework was built around that design.

And it was thoroughly tested at the design phase, before any implementation, to ensure it would work with all the editors.

There were even some changes to Pydantic itself to support this.

  @CheckForNull private Throwable thrown;

  @VisibleForTesting
  Closer(Suppressor suppressor) {
    this.suppressor = checkNotNull(suppressor); // checkNotNull to satisfy null tests
  }

  /**
   * Registers the given {@code closeable} to be closed when this {@code Closer} is {@linkplain
   * #close closed}.
   *
   * @return the given {@code closeable}
   */

   * if previous calls have initialized the {@code PermissionSupplier} fields.
   *
   * <p>This lets us test the effects of different values of the {@code user.name} system property
   * without needing a separate VM or classloader.
   */
  @IgnoreJRERequirement // used only when Path is available (and only from tests)
  @VisibleForTesting
  static void testMakingUserPermissionsFromScratch() throws IOException {

          }

          @Override
          protected void verify(List<Integer> elements) {
            assertEquals(newHashSet(elements), multimap.get("foo"));
          }
        };

    tester.test();
  }

  private enum Color {
    BLUE,
    RED,
    YELLOW,
    GREEN
  }

  private abstract static class CountingSupplier<E> implements Supplier<E>, Serializable {
    int count;

    assertThat((long) arraysDim1 * arraysDim2).isNotEqualTo((long) (arraysDim1 * arraysDim2));

    byte[][] arrays = new byte[arraysDim1][];
    // it's shared to avoid using too much memory in tests
    byte[] sharedArray = new byte[arraysDim2];
    Arrays.fill(arrays, sharedArray);

    try {
      Bytes.concat(arrays);
      fail();
    } catch (IllegalArgumentException expected) {
    }
  }

              SmbResource c = new SmbFile(r, "test?#foo") ) {
            assertEquals("test?#foo", c.getName());
            try ( SmbFile t = new SmbFile(c.getLocator().getURL(), getContext()) ) {
                assertEquals("test%3f#foo", t.getName());
            }
        }
    }


    @Test
    public void testBindingAddress () throws DcerpcException, MalformedURLException, CIFSException, IOException {