Class BitFieldTest

src/test/java/org/apache/commons/lang3/BitFieldTest.java:29–286

Tests BitField constructed with int masks.

 * Tests {@link BitField} constructed with int masks.
 */
class BitFieldTest extends AbstractLangTest {

    private static final BitField BF_MULTI = new BitField(0x3F80);

    private static final BitField BF_SINGLE = new BitField(0x4000);

    private static final BitField BF_ZERO = new BitField(0);

    @Test
    void testByteBoolean() {
        assertEquals(0, new BitField(0).setByteBoolean((byte) 0, true));
        assertEquals(1, new BitField(1).setByteBoolean((byte) 0, true));
        assertEquals(2, new BitField(2).setByteBoolean((byte) 0, true));
        assertEquals(4, new BitField(4).setByteBoolean((byte) 0, true));
        assertEquals(8, new BitField(8).setByteBoolean((byte) 0, true));
        assertEquals(16, new BitField(16).setByteBoolean((byte) 0, true));
        assertEquals(32, new BitField(32).setByteBoolean((byte) 0, true));
        assertEquals(64, new BitField(64).setByteBoolean((byte) 0, true));
        assertEquals(-128, new BitField(128).setByteBoolean((byte) 0, true));
        assertEquals(1, new BitField(0).setByteBoolean((byte) 1, false));
        assertEquals(0, new BitField(1).setByteBoolean((byte) 1, false));
        assertEquals(0, new BitField(2).setByteBoolean((byte) 2, false));
        assertEquals(0, new BitField(4).setByteBoolean((byte) 4, false));
        assertEquals(0, new BitField(8).setByteBoolean((byte) 8, false));
        assertEquals(0, new BitField(16).setByteBoolean((byte) 16, false));
        assertEquals(0, new BitField(32).setByteBoolean((byte) 32, false));
        assertEquals(0, new BitField(64).setByteBoolean((byte) 64, false));
        assertEquals(0, new BitField(128).setByteBoolean((byte) 128, false));
        assertEquals(-2, new BitField(1).setByteBoolean((byte) 255, false));
        final byte clearedBit = new BitField(0x40).setByteBoolean((byte) -63, false);
        assertFalse(new BitField(0x40).isSet(clearedBit));
    }

    /**
     * Tests the {@link BitField#clear()} method.
     */
    @Test
    void testClearInt() {
        assertEquals(BF_MULTI.clear(-1), 0xFFFFC07F);
        assertEquals(BF_SINGLE.clear(-1), 0xFFFFBFFF);
        assertEquals(BF_ZERO.clear(-1), 0xFFFFFFFF);
    }

    /**
     * Tests the {@link BitField#clear()} method.
     */
    @Test
    void testClearLong() {
        assertEquals(BF_MULTI.clear(-1L), 0xFFFFC07F);
        assertEquals(BF_SINGLE.clear(-1L), 0xFFFFBFFF);
        assertEquals(BF_ZERO.clear(-1L), 0xFFFFFFFF);
    }

    /**
     * Tests the {@link BitField#clearShort()} method.
     */
    @Test
    void testClearShort() {