test_IntegerBuffer.java

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package org.custommonkey.xmlunit.util;

import junit.framework.TestCase;

/**
 * Tests for IntegerBuffer
 */
public class test_IntegerBuffer extends TestCase {

    public void testToArrayEmpty() {
        assertNotNull((new IntegerBuffer()).toIntArray());
        assertEquals(0, (new IntegerBuffer()).toIntArray().length);
    }

    public void testSingleIntAppend() {
        IntegerBuffer b = new IntegerBuffer();
        b.append(1);
        assertNotNull(b.toIntArray());
        assertEquals(1, b.toIntArray().length);
        assertEquals(1, b.toIntArray()[0]);
    }

    public void testArrayAppend() {
        IntegerBuffer b = new IntegerBuffer();
        b.append(new int[] {1, 2});
        assertNotNull(b.toIntArray());
        assertEquals(2, b.toIntArray().length);
        for (int i = 0; i < 2; i++) {
            assertEquals(i + 1, b.toIntArray()[i]);
        }
    }

    public void testSingleIntAppendWithGrowth() {
        IntegerBuffer b = new IntegerBuffer(1);
        for (int i = 0; i < 2; i++) {
            b.append(i);
        }
        assertNotNull(b.toIntArray());
        assertEquals(2, b.toIntArray().length);
        for (int i = 0; i < 2; i++) {
            assertEquals(i, b.toIntArray()[i]);
        }
    }

    public void testArrayAppendWithGrowth() {
        IntegerBuffer b = new IntegerBuffer(1);
        b.append(new int[] {1, 2});
        assertNotNull(b.toIntArray());
        assertEquals(2, b.toIntArray().length);
        for (int i = 0; i < 2; i++) {
            assertEquals(i + 1, b.toIntArray()[i]);
        }
    }

    public void testSize() {
        IntegerBuffer b = new IntegerBuffer();
        assertEquals(0, b.size());
        b.append(0);
        assertEquals(1, b.size());
        b.append(new int[] {1, 2});
        assertEquals(3, b.size());
    }

    public void testCapacity() {
        IntegerBuffer b = new IntegerBuffer(1);
        assertEquals(1, b.capacity());
        b.append(0);
        assertEquals(1, b.capacity());
        b.append(0);
        assertTrue(b.capacity() > 1);
    }

    public void testIndexOfSimple() {
        IntegerBuffer b = new IntegerBuffer();
        int[] test = new int[] {1, 2, 3};
        assertEquals(-1, b.indexOf(test));
        b.append(test);
        assertEquals(0, b.indexOf(test));
        b.append(test);
        assertEquals(0, b.indexOf(test));
    }

    public void testIndexOfWithOffset() {
        IntegerBuffer b = new IntegerBuffer();
        int[] test = new int[] {1, 2, 3};
        b.append(0);
        assertEquals(-1, b.indexOf(test));
        b.append(test);
        assertEquals(1, b.indexOf(test));
    }

    public void testIndexOfWithRepeatedInts() {
        IntegerBuffer b = new IntegerBuffer();
        int[] test = new int[] {1, 2, 3};
        b.append(1);
        assertEquals(-1, b.indexOf(test));
        b.append(test);
        assertEquals(1, b.indexOf(test));
    }

    public void testIndexOfSupSequenceIsThere() {
        IntegerBuffer b = new IntegerBuffer();
        int[] test = new int[] {1, 2, 3};
        b.append(new int[] {1, 2});
        b.append(4);
        assertEquals(-1, b.indexOf(test));
    }        

    public void testAllBytes() {
        IntegerBuffer buf = new IntegerBuffer();
        for (byte b = Byte.MIN_VALUE; b < Byte.MAX_VALUE; b++) {
            buf.append(b);
        }
        buf.append(Byte.MAX_VALUE);
        int[] is = buf.toIntArray();
        for (int i = Byte.MIN_VALUE; i <= Byte.MAX_VALUE; i++) {
            assertEquals((byte) i, is[i + Math.abs(Byte.MIN_VALUE)]);
        }
    }

    public void testAllChars() {
        IntegerBuffer buf = new IntegerBuffer();
        for (char c = Character.MIN_VALUE; c < Character.MAX_VALUE; c++) {
            buf.append(c);
        }
        buf.append(Character.MAX_VALUE);
        int[] is = buf.toIntArray();
        for (int i = Character.MIN_VALUE; i <= Character.MAX_VALUE; i++) {
            assertEquals((char) i, is[i + Math.abs(Character.MIN_VALUE)]);
        }
    }
}