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testCompareTo() — netty Function Reference

Architecture documentation for the testCompareTo() function in AbstractByteBufTest.java from the netty codebase.

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Dependency Diagram

graph TD
  42c3b98a_2383_781d_4199_30a293916108["testCompareTo()"]
  6540f2d1_cdad_6705_dd1d_9a24e2e53242["AbstractByteBufTest"]
  42c3b98a_2383_781d_4199_30a293916108 -->|defined in| 6540f2d1_cdad_6705_dd1d_9a24e2e53242
  style 42c3b98a_2383_781d_4199_30a293916108 fill:#6366f1,stroke:#818cf8,color:#fff

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Source Code

buffer/src/test/java/io/netty/buffer/AbstractByteBufTest.java lines 2216–2261

    @Test
    public void testCompareTo() {
        try {
            buffer.compareTo(null);
            fail();
        } catch (NullPointerException e) {
            // Expected
        }

        // Fill the random stuff
        byte[] value = new byte[32];
        random.nextBytes(value);
        // Prevent overflow / underflow
        if (value[0] == 0) {
            value[0] ++;
        } else if (value[0] == -1) {
            value[0] --;
        }

        buffer.setIndex(0, value.length);
        buffer.setBytes(0, value);

        assertEquals(0, buffer.compareTo(wrappedBuffer(value)));
        assertEquals(0, buffer.compareTo(wrappedBuffer(value).order(LITTLE_ENDIAN)));

        value[0] ++;
        assertTrue(buffer.compareTo(wrappedBuffer(value)) < 0);
        assertTrue(buffer.compareTo(wrappedBuffer(value).order(LITTLE_ENDIAN)) < 0);
        value[0] -= 2;
        assertTrue(buffer.compareTo(wrappedBuffer(value)) > 0);
        assertTrue(buffer.compareTo(wrappedBuffer(value).order(LITTLE_ENDIAN)) > 0);
        value[0] ++;

        assertTrue(buffer.compareTo(wrappedBuffer(value, 0, 31)) > 0);
        assertTrue(buffer.compareTo(wrappedBuffer(value, 0, 31).order(LITTLE_ENDIAN)) > 0);
        assertTrue(buffer.slice(0, 31).compareTo(wrappedBuffer(value)) < 0);
        assertTrue(buffer.slice(0, 31).compareTo(wrappedBuffer(value).order(LITTLE_ENDIAN)) < 0);

        ByteBuf retainedSlice = buffer.retainedSlice(0, 31);
        assertTrue(retainedSlice.compareTo(wrappedBuffer(value)) < 0);
        retainedSlice.release();

        retainedSlice = buffer.retainedSlice(0, 31);
        assertTrue(retainedSlice.compareTo(wrappedBuffer(value).order(LITTLE_ENDIAN)) < 0);
        retainedSlice.release();
    }

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Defined In

Source

Frequently Asked Questions

What does testCompareTo() do?
testCompareTo() is a function in the netty codebase, defined in buffer/src/test/java/io/netty/buffer/AbstractByteBufTest.java.
Where is testCompareTo() defined?
testCompareTo() is defined in buffer/src/test/java/io/netty/buffer/AbstractByteBufTest.java at line 2216.

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