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SnappyTest Class — netty Architecture

Architecture documentation for the SnappyTest class in SnappyTest.java from the netty codebase.

Class java

Entity Profile

Dependency Diagram

graph TD
  1a449087_fef9_c1b9_33e3_88b8aff8d675["SnappyTest"]
  bf1509f4_d261_8811_4f6f_30655cd4d9d4["SnappyTest.java"]
  1a449087_fef9_c1b9_33e3_88b8aff8d675 -->|defined in| bf1509f4_d261_8811_4f6f_30655cd4d9d4
  5ec04737_91c7_954e_7a9d_3468263851c2["resetSnappy()"]
  1a449087_fef9_c1b9_33e3_88b8aff8d675 -->|method| 5ec04737_91c7_954e_7a9d_3468263851c2
  3cce76a5_5e44_b75c_c13c_16adda23ff58["testDecodeLiteral()"]
  1a449087_fef9_c1b9_33e3_88b8aff8d675 -->|method| 3cce76a5_5e44_b75c_c13c_16adda23ff58
  c64dffd6_6e9a_3fe9_9e9d_3ee6b6bdc366["testDecodeCopyWith1ByteOffset()"]
  1a449087_fef9_c1b9_33e3_88b8aff8d675 -->|method| c64dffd6_6e9a_3fe9_9e9d_3ee6b6bdc366
  2df7d882_496d_d522_22c3_9e2882e0575e["testDecodeCopyWithTinyOffset()"]
  1a449087_fef9_c1b9_33e3_88b8aff8d675 -->|method| 2df7d882_496d_d522_22c3_9e2882e0575e
  2156b37a_98ff_4b8a_1421_e6971f5a2b56["testDecodeCopyWithOffsetBeforeChunk()"]
  1a449087_fef9_c1b9_33e3_88b8aff8d675 -->|method| 2156b37a_98ff_4b8a_1421_e6971f5a2b56
  99377582_dc85_4444_3b07_96b987e49114["testDecodeWithOverlyLongPreamble()"]
  1a449087_fef9_c1b9_33e3_88b8aff8d675 -->|method| 99377582_dc85_4444_3b07_96b987e49114
  c490ee33_1dc2_0a79_931f_442d43405bc8["encodeShortTextIsLiteral()"]
  1a449087_fef9_c1b9_33e3_88b8aff8d675 -->|method| c490ee33_1dc2_0a79_931f_442d43405bc8
  640ea35f_21d9_0736_f78c_94a1829e9b38["encodeAndDecodeLongTextUsesCopy()"]
  1a449087_fef9_c1b9_33e3_88b8aff8d675 -->|method| 640ea35f_21d9_0736_f78c_94a1829e9b38
  5d465e89_2ca2_d8a9_3cdf_1bb6e39a6c07["testCalculateChecksum()"]
  1a449087_fef9_c1b9_33e3_88b8aff8d675 -->|method| 5d465e89_2ca2_d8a9_3cdf_1bb6e39a6c07
  110f182b_bc33_ee0a_d09b_8aef6248de95["testMaskChecksum()"]
  1a449087_fef9_c1b9_33e3_88b8aff8d675 -->|method| 110f182b_bc33_ee0a_d09b_8aef6248de95
  47bb0a2f_bb93_b7ce_4819_7f3edc35b6dc["testValidateChecksumMatches()"]
  1a449087_fef9_c1b9_33e3_88b8aff8d675 -->|method| 47bb0a2f_bb93_b7ce_4819_7f3edc35b6dc
  f0f13b16_5685_de0f_654e_b9c107f539ad["testValidateChecksumFails()"]
  1a449087_fef9_c1b9_33e3_88b8aff8d675 -->|method| f0f13b16_5685_de0f_654e_b9c107f539ad
  ac7399f9_c466_ca76_a8b0_a11039093c26["testEncodeLiteralAndDecodeLiteral()"]
  1a449087_fef9_c1b9_33e3_88b8aff8d675 -->|method| ac7399f9_c466_ca76_a8b0_a11039093c26

Relationship Graph

Source Code

codec-compression/src/test/java/io/netty/handler/codec/compression/SnappyTest.java lines 32–360

public class SnappyTest {
    private final Snappy snappy = new Snappy();

    @AfterEach
    public void resetSnappy() {
        snappy.reset();
    }

    @Test
    public void testDecodeLiteral() throws Exception {
        ByteBuf in = Unpooled.wrappedBuffer(new byte[] {
            0x05, // preamble length
            0x04 << 2, // literal tag + length
            0x6e, 0x65, 0x74, 0x74, 0x79 // "netty"
        });
        ByteBuf out = Unpooled.buffer(5);
        snappy.decode(in, out);

        // "netty"
        ByteBuf expected = Unpooled.wrappedBuffer(new byte[] {
            0x6e, 0x65, 0x74, 0x74, 0x79
        });
        assertEquals(expected, out, "Literal was not decoded correctly");

        in.release();
        out.release();
        expected.release();
    }

    @Test
    public void testDecodeCopyWith1ByteOffset() throws Exception {
        ByteBuf in = Unpooled.wrappedBuffer(new byte[] {
            0x0a, // preamble length
            0x04 << 2, // literal tag + length
            0x6e, 0x65, 0x74, 0x74, 0x79, // "netty"
            0x01 << 2 | 0x01, // copy with 1-byte offset + length
            0x05 // offset
        });
        ByteBuf out = Unpooled.buffer(10);
        snappy.decode(in, out);

        // "nettynetty" - we saved a whole byte :)
        ByteBuf expected = Unpooled.wrappedBuffer(new byte[] {
            0x6e, 0x65, 0x74, 0x74, 0x79, 0x6e, 0x65, 0x74, 0x74, 0x79
        });
        assertEquals(expected, out, "Copy was not decoded correctly");

        in.release();
        out.release();
        expected.release();
    }

    @Test
    public void testDecodeCopyWithTinyOffset() {
        final ByteBuf in = Unpooled.wrappedBuffer(new byte[] {
            0x0b, // preamble length
            0x04 << 2, // literal tag + length
            0x6e, 0x65, 0x74, 0x74, 0x79, // "netty"
            0x05 << 2 | 0x01, // copy with 1-byte offset + length
            0x00 // INVALID offset (< 1)
        });
        final ByteBuf out = Unpooled.buffer(10);
        try {
            assertThrows(DecompressionException.class, new Executable() {
                @Override
                public void execute() {
                    snappy.decode(in, out);
                }
            });
        } finally {
            in.release();
            out.release();
        }
    }

    @Test
    public void testDecodeCopyWithOffsetBeforeChunk() {
        final ByteBuf in = Unpooled.wrappedBuffer(new byte[] {
            0x0a, // preamble length
            0x04 << 2, // literal tag + length
            0x6e, 0x65, 0x74, 0x74, 0x79, // "netty"

Defined In

Source

Frequently Asked Questions

What is the SnappyTest class?
SnappyTest is a class in the netty codebase, defined in codec-compression/src/test/java/io/netty/handler/codec/compression/SnappyTest.java.
Where is SnappyTest defined?
SnappyTest is defined in codec-compression/src/test/java/io/netty/handler/codec/compression/SnappyTest.java at line 32.

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