public void testCombineUnordered() { HashCode hash31 = HashCodes.fromInt(31); HashCode hash32 = HashCodes.fromInt(32); assertEquals(hash32, Hashing.combineUnordered(ImmutableList.of(hash32))); assertEquals(HashCodes.fromInt(64), Hashing.combineUnordered(ImmutableList.of(hash32, hash32))); assertEquals( HashCodes.fromInt(96), Hashing.combineUnordered(ImmutableList.of(hash32, hash32, hash32))); assertEquals( Hashing.combineUnordered(ImmutableList.of(hash31, hash32)), Hashing.combineUnordered(ImmutableList.of(hash32, hash31))); }
public void testCombineOrdered() { HashCode hash31 = HashCodes.fromInt(31); HashCode hash32 = HashCodes.fromInt(32); assertEquals(hash32, Hashing.combineOrdered(ImmutableList.of(hash32))); assertEquals( HashCodes.fromBytes(new byte[] {(byte) 0x80, 0, 0, 0}), Hashing.combineOrdered(ImmutableList.of(hash32, hash32))); assertEquals( HashCodes.fromBytes(new byte[] {(byte) 0xa0, 0, 0, 0}), Hashing.combineOrdered(ImmutableList.of(hash32, hash32, hash32))); assertFalse( Hashing.combineOrdered(ImmutableList.of(hash31, hash32)) .equals(Hashing.combineOrdered(ImmutableList.of(hash32, hash31)))); }
public void testCombineUnordered_differentBitLengths() { try { Hashing.combineUnordered(ImmutableList.of(HashCodes.fromInt(32), HashCodes.fromLong(32L))); fail(); } catch (IllegalArgumentException expected) { } }
public void testConsistentHash_ofHashCode() { checkSameResult(HashCodes.fromLong(1), 1); checkSameResult(HashCodes.fromLong(0x9999999999999999L), 0x9999999999999999L); checkSameResult(HashCodes.fromInt(0x99999999), 0x0000000099999999L); }
public void testPadToLong() { assertEquals(0x1111111111111111L, Hashing.padToLong(HashCodes.fromLong(0x1111111111111111L))); assertEquals(0x9999999999999999L, Hashing.padToLong(HashCodes.fromLong(0x9999999999999999L))); assertEquals(0x0000000011111111L, Hashing.padToLong(HashCodes.fromInt(0x11111111))); assertEquals(0x0000000099999999L, Hashing.padToLong(HashCodes.fromInt(0x99999999))); }