DefaultHttp3SettingsFrameTest Class — netty Architecture

Source Code

codec-http3/src/test/java/io/netty/handler/codec/http3/DefaultHttp3SettingsFrameTest.java lines 36–162

class DefaultHttp3SettingsFrameTest {

    @Test
    void testDefaultFrameHasEmptySettings() {
        DefaultHttp3SettingsFrame frame = new DefaultHttp3SettingsFrame();

        assertNotNull(frame.settings());
        assertFalse(frame.iterator().hasNext());
        assertNull(frame.get(Http3SettingIdentifier.HTTP3_SETTINGS_QPACK_MAX_TABLE_CAPACITY.id()));
    }

    @Test
    void testPutAndGetDelegatesToSettings() {
        DefaultHttp3SettingsFrame frame = new DefaultHttp3SettingsFrame();

        frame.put(Http3SettingIdentifier.HTTP3_SETTINGS_QPACK_MAX_TABLE_CAPACITY.id(), 256L);
        frame.put(Http3SettingIdentifier.HTTP3_SETTINGS_QPACK_BLOCKED_STREAMS.id(), 8L);

        assertEquals(256L, frame.settings().qpackMaxTableCapacity());
        assertEquals(8L, frame.settings().qpackBlockedStreams());
        assertEquals(8L, frame.get(Http3SettingIdentifier.HTTP3_SETTINGS_QPACK_BLOCKED_STREAMS.id()));
    }

    @Test
    void testPutRejectsReservedHttp2Settings() {
        DefaultHttp3SettingsFrame frame = new DefaultHttp3SettingsFrame();
        assertThrows(IllegalArgumentException.class, () -> frame.put(0x4, 10L)); // HTTP/2 reserved key
    }

    @Test
    void testSettingsReferenceIsRetained() {
        Http3Settings settings = new Http3Settings().qpackMaxTableCapacity(512);
        DefaultHttp3SettingsFrame frame = new DefaultHttp3SettingsFrame(settings);

        assertSame(settings, frame.settings());
        assertEquals(512L, frame.settings().qpackMaxTableCapacity());

        // Modify settings externally and verify frame sees update
        settings.qpackBlockedStreams(3);
        assertEquals(3L, frame.get(Http3SettingIdentifier.HTTP3_SETTINGS_QPACK_BLOCKED_STREAMS.id()));
    }

    @Test
    void testEqualsAndHashCodeCompareSettings() {
        Http3Settings s1 = new Http3Settings().qpackMaxTableCapacity(128);
        Http3Settings s2 = new Http3Settings().qpackMaxTableCapacity(128);

        DefaultHttp3SettingsFrame f1 = new DefaultHttp3SettingsFrame(s1);
        DefaultHttp3SettingsFrame f2 = new DefaultHttp3SettingsFrame(s2);

        assertEquals(f1, f2);
        assertEquals(f1.hashCode(), f2.hashCode());
    }

    @Test
    void testIteratorReflectsSettingsEntries() {
        Http3Settings settings = new Http3Settings()
                .qpackMaxTableCapacity(64)
                .qpackBlockedStreams(2);
        DefaultHttp3SettingsFrame frame = new DefaultHttp3SettingsFrame(settings);

        Iterator<Map.Entry<Long, Long>> it = frame.iterator();
        int count = 0;
        while (it.hasNext()) {
            Map.Entry<Long, Long> entry = it.next();
            assertNotNull(entry.getKey());
            assertNotNull(entry.getValue());
            count++;
        }
        assertTrue(count >= 2);
    }

    @Test
    void testToStringIncludesSettings() {
        Http3Settings settings = new Http3Settings()
                .qpackMaxTableCapacity(1)
                .enableConnectProtocol(true);

        DefaultHttp3SettingsFrame frame = new DefaultHttp3SettingsFrame(settings);
        String output = frame.toString();