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PlatformDependentTest Class — netty Architecture

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

Class java

Entity Profile

Dependency Diagram

graph TD
  ff6bfe0a_3221_685f_da78_ee06b9ccc3c6["PlatformDependentTest"]
  9275ea2f_e019_ea12_b8a3_4d236b7d77fd["PlatformDependentTest.java"]
  ff6bfe0a_3221_685f_da78_ee06b9ccc3c6 -->|defined in| 9275ea2f_e019_ea12_b8a3_4d236b7d77fd
  ceea74ab_d15a_788c_372a_9529b71123d9["testEqualsConsistentTime()"]
  ff6bfe0a_3221_685f_da78_ee06b9ccc3c6 -->|method| ceea74ab_d15a_788c_372a_9529b71123d9
  ae7336a0_d75b_e2a9_38a5_7221ab42cde4["testEquals()"]
  ff6bfe0a_3221_685f_da78_ee06b9ccc3c6 -->|method| ae7336a0_d75b_e2a9_38a5_7221ab42cde4
  29a97445_9d8f_273f_dd64_487afc7c4942["testIsZero()"]
  ff6bfe0a_3221_685f_da78_ee06b9ccc3c6 -->|method| 29a97445_9d8f_273f_dd64_487afc7c4942
  9c1274d9_2a09_e656_a236_b73212949bb4["randomCharInByteRange()"]
  ff6bfe0a_3221_685f_da78_ee06b9ccc3c6 -->|method| 9c1274d9_2a09_e656_a236_b73212949bb4
  46c18ccd_3735_78d8_7e50_d68475399232["testHashCodeAscii()"]
  ff6bfe0a_3221_685f_da78_ee06b9ccc3c6 -->|method| 46c18ccd_3735_78d8_7e50_d68475399232
  0912b2f4_cd2e_20a5_fb5c_051ca34ca2b3["testAllocateWithCapacity0()"]
  ff6bfe0a_3221_685f_da78_ee06b9ccc3c6 -->|method| 0912b2f4_cd2e_20a5_fb5c_051ca34ca2b3
  6883b03c_1254_9c1b_e2fc_149c59f4003b["java25MustHaveCleanerImplAvailable()"]
  ff6bfe0a_3221_685f_da78_ee06b9ccc3c6 -->|method| 6883b03c_1254_9c1b_e2fc_149c59f4003b

Relationship Graph

Source Code

common/src/test/java/io/netty/util/internal/PlatformDependentTest.java lines 34–172

public class PlatformDependentTest {
    private static final Random r = new Random();
    @Test
    public void testEqualsConsistentTime() {
        testEquals(new EqualityChecker() {
            @Override
            public boolean equals(byte[] bytes1, int startPos1, byte[] bytes2, int startPos2, int length) {
                return PlatformDependent.equalsConstantTime(bytes1, startPos1, bytes2, startPos2, length) != 0;
            }
        });
    }

    @Test
    public void testEquals() {
        testEquals(new EqualityChecker() {
            @Override
            public boolean equals(byte[] bytes1, int startPos1, byte[] bytes2, int startPos2, int length) {
                return PlatformDependent.equals(bytes1, startPos1, bytes2, startPos2, length);
            }
        });
    }

    @Test
    public void testIsZero() {
        byte[] bytes = new byte[100];
        assertTrue(PlatformDependent.isZero(bytes, 0, 0));
        assertTrue(PlatformDependent.isZero(bytes, 0, -1));
        assertTrue(PlatformDependent.isZero(bytes, 0, 100));
        assertTrue(PlatformDependent.isZero(bytes, 10, 90));
        bytes[10] = 1;
        assertTrue(PlatformDependent.isZero(bytes, 0, 10));
        assertFalse(PlatformDependent.isZero(bytes, 0, 11));
        assertFalse(PlatformDependent.isZero(bytes, 10, 1));
        assertTrue(PlatformDependent.isZero(bytes, 11, 89));
    }

    private interface EqualityChecker {
        boolean equals(byte[] bytes1, int startPos1, byte[] bytes2, int startPos2, int length);
    }

    private static void testEquals(EqualityChecker equalsChecker) {
        byte[] bytes1 = {'H', 'e', 'l', 'l', 'o', ' ', 'W', 'o', 'r', 'l', 'd'};
        byte[] bytes2 = {'H', 'e', 'l', 'l', 'o', ' ', 'W', 'o', 'r', 'l', 'd'};
        assertNotSame(bytes1, bytes2);
        assertTrue(equalsChecker.equals(bytes1, 0, bytes2, 0, bytes1.length));
        assertTrue(equalsChecker.equals(bytes1, 2, bytes2, 2, bytes1.length - 2));

        bytes1 = new byte[] {1, 2, 3, 4, 5, 6};
        bytes2 = new byte[] {1, 2, 3, 4, 5, 6, 7};
        assertNotSame(bytes1, bytes2);
        assertFalse(equalsChecker.equals(bytes1, 0, bytes2, 1, bytes1.length));
        assertTrue(equalsChecker.equals(bytes2, 0, bytes1, 0, bytes1.length));

        bytes1 = new byte[] {1, 2, 3, 4};
        bytes2 = new byte[] {1, 2, 3, 5};
        assertFalse(equalsChecker.equals(bytes1, 0, bytes2, 0, bytes1.length));
        assertTrue(equalsChecker.equals(bytes1, 0, bytes2, 0, 3));

        bytes1 = new byte[] {1, 2, 3, 4};
        bytes2 = new byte[] {1, 3, 3, 4};
        assertFalse(equalsChecker.equals(bytes1, 0, bytes2, 0, bytes1.length));
        assertTrue(equalsChecker.equals(bytes1, 2, bytes2, 2, bytes1.length - 2));

        bytes1 = new byte[0];
        bytes2 = new byte[0];
        assertNotSame(bytes1, bytes2);
        assertTrue(equalsChecker.equals(bytes1, 0, bytes2, 0, 0));

        bytes1 = new byte[100];
        bytes2 = new byte[100];
        for (int i = 0; i < 100; i++) {
            bytes1[i] = (byte) i;
            bytes2[i] = (byte) i;
        }
        assertTrue(equalsChecker.equals(bytes1, 0, bytes2, 0, bytes1.length));
        bytes1[50] = 0;
        assertFalse(equalsChecker.equals(bytes1, 0, bytes2, 0, bytes1.length));
        assertTrue(equalsChecker.equals(bytes1, 51, bytes2, 51, bytes1.length - 51));
        assertTrue(equalsChecker.equals(bytes1, 0, bytes2, 0, 50));

        bytes1 = new byte[]{1, 2, 3, 4, 5};

Defined In

Source

Frequently Asked Questions

What is the PlatformDependentTest class?
PlatformDependentTest is a class in the netty codebase, defined in common/src/test/java/io/netty/util/internal/PlatformDependentTest.java.
Where is PlatformDependentTest defined?
PlatformDependentTest is defined in common/src/test/java/io/netty/util/internal/PlatformDependentTest.java at line 34.

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