You can read it to understand better what has changed.

## Tests { #tests }

Make sure you have [tests](../tutorial/testing.md) for your app and you run them on continuous integration (CI).

This way, you can do the upgrade and make sure everything is still working as expected.

## `bump-pydantic` { #bump-pydantic }

      Comparator<?> comparator = set.comparator();
      if (Ordering.<C>natural().equals(comparator) || comparator == null) {
        return closed(set.first(), set.last());
      }
    }
    Iterator<C> valueIterator = values.iterator();
    C min = checkNotNull(valueIterator.next());
    C max = min;
    while (valueIterator.hasNext()) {
      C value = checkNotNull(valueIterator.next());

If you have quite some technical knowledge (coroutines, threads, blocking, etc.) and are curious about how FastAPI handles `async def` vs normal `def`, go ahead.

///

### Path operation functions { #path-operation-functions }

When you declare a *path operation function* with normal `def` instead of `async def`, it is run in an external threadpool that is then awaited, instead of being called directly (as it would block the server).

        }
    }

    @Nested
    @DisplayName("WriteBytesWireFormat Tests")
    class WriteBytesWireFormatTests {

        @Test
        @DisplayName("Should always return 0 for write operation")
        void testWriteBytesWireFormat() {
            byte[] buffer = new byte[64];
            int result = notification.writeBytesWireFormat(buffer, 0);
            assertEquals(0, result);

        original.put("type", "operation");
        original.put("name", "reindex");
        original.put("status", "running");
        original.put("createdTime", 1234567890L);

        final String json = coordinatorHelper.toJson(original);
        final Map<String, Object> parsed = coordinatorHelper.parseJson(json);

        assertEquals("operation", parsed.get("type"));

                    // Missing trailing slash -> should complain about directory ending
                    Arguments.of("smb://server/share", "/share", true),
                    // Not a server root -> invalid list operation
                    Arguments.of("smb://server/share/", "/share/", false));
        }

        @ParameterizedTest(name = "invalid path: {0}")
        @MethodSource("invalidShareEnumCases")

    assertEquals(ITERATIONS / 2, map.size());
    assertEquals(nonZeroKeys, map.asMap().keySet());
  }

  public void testClear() {
    AtomicLongMap<Object> map = AtomicLongMap.create();
    for (int i = 0; i < ITERATIONS; i++) {
      map.put(new Object(), i);
    }
    assertEquals(ITERATIONS, map.size());

    map.clear();
    assertEquals(0, map.size());
    assertTrue(map.isEmpty());
  }

     * changing any bin. The operations must not take any action that could even momentarily
     * cause a concurrent read operation to see inconsistent data. This is made easier by the
     * nature of the read operations in Map. For example, no operation can reveal that the table
     * has grown but the threshold has not yet been updated, so there are no atomicity requirements
     * for this with respect to reads.

                    boolean notified = false;
                    final Iterator<Entry<Long, Response>> iterator = this.response_map.entrySet().iterator();
                    while (iterator.hasNext()) {
                        final Response resp = iterator.next().getValue();
                        resp.exception(ex);
                        iterator.remove();
                        notified = true;

                    }

    assertEquals(ITERATIONS / 2, map.size());
    assertEquals(nonZeroKeys, map.asMap().keySet());
  }

  public void testClear() {
    AtomicLongMap<Object> map = AtomicLongMap.create();
    for (int i = 0; i < ITERATIONS; i++) {
      map.put(new Object(), i);
    }
    assertEquals(ITERATIONS, map.size());

    map.clear();
    assertEquals(0, map.size());
    assertTrue(map.isEmpty());
  }