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 testCombineUnordered_randomHashCodes() { Random random = new Random(); List<HashCode> hashCodes = Lists.newArrayList(); for (int i = 0; i < 10; i++) { hashCodes.add(HashCodes.fromLong(random.nextLong())); } HashCode hashCode1 = Hashing.combineUnordered(hashCodes); Collections.shuffle(hashCodes); HashCode hashCode2 = Hashing.combineUnordered(hashCodes); assertEquals(hashCode1, hashCode2); }
public void testCombineUnordered_differentBitLengths() { try { Hashing.combineUnordered(ImmutableList.of(HashCodes.fromInt(32), HashCodes.fromLong(32L))); fail(); } catch (IllegalArgumentException expected) { } }
public void testCombineUnordered_empty() { try { Hashing.combineUnordered(Collections.<HashCode>emptySet()); fail(); } catch (IllegalArgumentException expected) { } }
public void testCombineUnordered_null() { try { Hashing.combineUnordered(null); fail(); } catch (NullPointerException expected) { } }
private String generateHash(@Nonnull List<TableRow> rows) { List<HashCode> rowHashes = Lists.newArrayList(); for (TableRow row : rows) { List<String> cellsInOneRow = Lists.newArrayList(); for (TableCell cell : row.getF()) { cellsInOneRow.add(Objects.toString(cell.getV())); Collections.sort(cellsInOneRow); } rowHashes.add(Hashing.sha1().hashString(cellsInOneRow.toString(), StandardCharsets.UTF_8)); } return Hashing.combineUnordered(rowHashes).toString(); }