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testSize4Varint() — netty Function Reference

Architecture documentation for the testSize4Varint() function in ProtobufVarint32LengthFieldPrependerTest.java from the netty codebase.

Function java Buffer Allocators

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Dependency Diagram

graph TD
  a0e8cfba_48fd_051d_1689_75f9ac061d9b["testSize4Varint()"]
  6eaee290_afed_8a50_d035_25ef3cea2e1f["ProtobufVarint32LengthFieldPrependerTest"]
  a0e8cfba_48fd_051d_1689_75f9ac061d9b -->|defined in| 6eaee290_afed_8a50_d035_25ef3cea2e1f
  style a0e8cfba_48fd_051d_1689_75f9ac061d9b fill:#6366f1,stroke:#818cf8,color:#fff

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Source Code

codec-protobuf/src/test/java/io/netty/handler/codec/protobuf/ProtobufVarint32LengthFieldPrependerTest.java lines 131–166

    @Test
    public void testSize4Varint() {
        final int size = 4;
        final int num = 0x200000;
        assertEquals(size, ProtobufVarint32LengthFieldPrepender.computeRawVarint32Size(num));
        final byte[] buf = new byte[size + num];
        /**
         * 8    0    8    0    8    0    0    1
         * 1000 0000 1000 0000 1000 0000 0000 0001
         * 0000 0000 0000 0000 0000 0000 0000 0001
         * 0000 0001 0000 0000 0000 0000 0000 0000
         *  000 0001  000 0000  000 0000  000 0000
         *
         *    0000 0010 0000 0000 0000 0000 0000
         *    0    2    0    0    0    0    0
         *
         */

        buf[0] = (byte) (0x80 & 0xFF);
        buf[1] = (byte) (0x80 & 0xFF);
        buf[2] = (byte) (0x80 & 0xFF);
        buf[3] = 0x01;
        for (int i = size; i < num + size; ++i) {
            buf[i] = 1;
        }
        assertTrue(ch.writeOutbound(wrappedBuffer(buf, size, buf.length - size)));

        ByteBuf expected = wrappedBuffer(buf);
        ByteBuf actual = ch.readOutbound();

        assertEquals(expected, actual);
        assertFalse(ch.finish());

        expected.release();
        actual.release();
    }

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Frequently Asked Questions

What does testSize4Varint() do?
testSize4Varint() is a function in the netty codebase, defined in codec-protobuf/src/test/java/io/netty/handler/codec/protobuf/ProtobufVarint32LengthFieldPrependerTest.java.
Where is testSize4Varint() defined?
testSize4Varint() is defined in codec-protobuf/src/test/java/io/netty/handler/codec/protobuf/ProtobufVarint32LengthFieldPrependerTest.java at line 131.

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