testDoesNotOverRead() — netty Function Reference

Architecture documentation for the testDoesNotOverRead() function in ByteToMessageDecoderTest.java from the netty codebase.

Function java Buffer Allocators calls 1

Entity Profile

Buffer→ Allocators→ testDoesNotOverRead() — netty Function Reference

Dependency Diagram

graph TD
  0856d66a_7f97_27bf_0f71_a370dbf04e05["testDoesNotOverRead()"]
  b1c999fe_35fb_8b70_a958_296cffb0616a["ByteToMessageDecoderTest"]
  0856d66a_7f97_27bf_0f71_a370dbf04e05 -->|defined in| b1c999fe_35fb_8b70_a958_296cffb0616a
  5082856a_b229_862d_0072_81f9b24f56a3["EmbeddedChannel()"]
  0856d66a_7f97_27bf_0f71_a370dbf04e05 -->|calls| 5082856a_b229_862d_0072_81f9b24f56a3
  style 0856d66a_7f97_27bf_0f71_a370dbf04e05 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

codec-base/src/test/java/io/netty/handler/codec/ByteToMessageDecoderTest.java lines 450–491

    @Test
    public void testDoesNotOverRead() {
        ReadInterceptingHandler interceptor = new ReadInterceptingHandler();

        EmbeddedChannel channel = new EmbeddedChannel();
        channel.config().setAutoRead(false);
        channel.pipeline().addLast(interceptor, new FixedLengthFrameDecoder(3));
        assertEquals(0, interceptor.readsTriggered);

        // 0 complete frames, 1 partial frame: SHOULD trigger a read
        channel.writeInbound(wrappedBuffer(new byte[] { 0, 1 }));
        assertEquals(1, interceptor.readsTriggered);

        // 2 complete frames, 0 partial frames: should NOT trigger a read
        channel.writeInbound(wrappedBuffer(new byte[] { 2 }), wrappedBuffer(new byte[] { 3, 4, 5 }));
        assertEquals(1, interceptor.readsTriggered);

        // 1 complete frame, 1 partial frame: should NOT trigger a read
        channel.writeInbound(wrappedBuffer(new byte[] { 6, 7, 8 }), wrappedBuffer(new byte[] { 9 }));
        assertEquals(1, interceptor.readsTriggered);

        // 1 complete frame, 1 partial frame: should NOT trigger a read
        channel.writeInbound(wrappedBuffer(new byte[] { 10, 11 }), wrappedBuffer(new byte[] { 12 }));
        assertEquals(1, interceptor.readsTriggered);

        // 0 complete frames, 1 partial frame: SHOULD trigger a read
        channel.writeInbound(wrappedBuffer(new byte[] { 13 }));
        assertEquals(2, interceptor.readsTriggered);

        // 1 complete frame, 0 partial frames: should NOT trigger a read
        channel.writeInbound(wrappedBuffer(new byte[] { 14 }));
        assertEquals(2, interceptor.readsTriggered);

        for (int i = 0; i < 5; i++) {
            ByteBuf read = channel.readInbound();
            assertEquals(i * 3 + 0, read.getByte(0));
            assertEquals(i * 3 + 1, read.getByte(1));
            assertEquals(i * 3 + 2, read.getByte(2));
            read.release();
        }
        assertFalse(channel.finish());
    }