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Diffstat (limited to 'android/guava-tests/test/com/google/common/primitives/UnsignedBytesTest.java')
-rw-r--r--android/guava-tests/test/com/google/common/primitives/UnsignedBytesTest.java373
1 files changed, 0 insertions, 373 deletions
diff --git a/android/guava-tests/test/com/google/common/primitives/UnsignedBytesTest.java b/android/guava-tests/test/com/google/common/primitives/UnsignedBytesTest.java
deleted file mode 100644
index 352c8f439..000000000
--- a/android/guava-tests/test/com/google/common/primitives/UnsignedBytesTest.java
+++ /dev/null
@@ -1,373 +0,0 @@
-/*
- * Copyright (C) 2008 The Guava Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.google.common.primitives;
-
-import com.google.common.collect.testing.Helpers;
-import com.google.common.testing.NullPointerTester;
-import com.google.common.testing.SerializableTester;
-import java.util.Arrays;
-import java.util.Comparator;
-import java.util.List;
-import java.util.Random;
-import junit.framework.TestCase;
-
-/**
- * Unit test for {@link UnsignedBytes}.
- *
- * @author Kevin Bourrillion
- * @author Louis Wasserman
- */
-public class UnsignedBytesTest extends TestCase {
- private static final byte LEAST = 0;
- private static final byte GREATEST = (byte) 255;
-
- // Only in this class, VALUES must be strictly ascending
- private static final byte[] VALUES = {LEAST, 127, (byte) 128, (byte) 129, GREATEST};
-
- public void testToInt() {
- assertEquals(0, UnsignedBytes.toInt((byte) 0));
- assertEquals(1, UnsignedBytes.toInt((byte) 1));
- assertEquals(127, UnsignedBytes.toInt((byte) 127));
- assertEquals(128, UnsignedBytes.toInt((byte) -128));
- assertEquals(129, UnsignedBytes.toInt((byte) -127));
- assertEquals(255, UnsignedBytes.toInt((byte) -1));
- }
-
- public void testCheckedCast() {
- for (byte value : VALUES) {
- assertEquals(value, UnsignedBytes.checkedCast(UnsignedBytes.toInt(value)));
- }
- assertCastFails(256L);
- assertCastFails(-1L);
- assertCastFails(Long.MAX_VALUE);
- assertCastFails(Long.MIN_VALUE);
- }
-
- public void testSaturatedCast() {
- for (byte value : VALUES) {
- assertEquals(value, UnsignedBytes.saturatedCast(UnsignedBytes.toInt(value)));
- }
- assertEquals(GREATEST, UnsignedBytes.saturatedCast(256L));
- assertEquals(LEAST, UnsignedBytes.saturatedCast(-1L));
- assertEquals(GREATEST, UnsignedBytes.saturatedCast(Long.MAX_VALUE));
- assertEquals(LEAST, UnsignedBytes.saturatedCast(Long.MIN_VALUE));
- }
-
- private static void assertCastFails(long value) {
- try {
- UnsignedBytes.checkedCast(value);
- fail("Cast to byte should have failed: " + value);
- } catch (IllegalArgumentException ex) {
- assertTrue(
- value + " not found in exception text: " + ex.getMessage(),
- ex.getMessage().contains(String.valueOf(value)));
- }
- }
-
- public void testCompare() {
- // This is the only ordering for primitives that does not have a
- // corresponding Comparable wrapper in java.lang.
- for (int i = 0; i < VALUES.length; i++) {
- for (int j = 0; j < VALUES.length; j++) {
- byte x = VALUES[i];
- byte y = VALUES[j];
- // note: spec requires only that the sign is the same
- assertEquals(
- x + ", " + y,
- Math.signum(UnsignedBytes.compare(x, y)),
- Math.signum(Ints.compare(i, j)));
- }
- }
- }
-
- public void testMax_noArgs() {
- try {
- UnsignedBytes.max();
- fail();
- } catch (IllegalArgumentException expected) {
- }
- }
-
- public void testMax() {
- assertEquals(LEAST, UnsignedBytes.max(LEAST));
- assertEquals(GREATEST, UnsignedBytes.max(GREATEST));
- assertEquals(
- (byte) 255, UnsignedBytes.max((byte) 0, (byte) -128, (byte) -1, (byte) 127, (byte) 1));
- }
-
- public void testMin_noArgs() {
- try {
- UnsignedBytes.min();
- fail();
- } catch (IllegalArgumentException expected) {
- }
- }
-
- public void testMin() {
- assertEquals(LEAST, UnsignedBytes.min(LEAST));
- assertEquals(GREATEST, UnsignedBytes.min(GREATEST));
- assertEquals(
- (byte) 0, UnsignedBytes.min((byte) 0, (byte) -128, (byte) -1, (byte) 127, (byte) 1));
- assertEquals(
- (byte) 0, UnsignedBytes.min((byte) -1, (byte) 127, (byte) 1, (byte) -128, (byte) 0));
- }
-
- private static void assertParseFails(String value) {
- try {
- UnsignedBytes.parseUnsignedByte(value);
- fail();
- } catch (NumberFormatException expected) {
- }
- }
-
- private static void assertParseFails(String value, int radix) {
- try {
- UnsignedBytes.parseUnsignedByte(value, radix);
- fail();
- } catch (NumberFormatException expected) {
- }
- }
-
- public void testParseUnsignedByte() {
- // We can easily afford to test this exhaustively.
- for (int i = 0; i <= 0xff; i++) {
- assertEquals((byte) i, UnsignedBytes.parseUnsignedByte(Integer.toString(i)));
- }
- assertParseFails("1000");
- assertParseFails("-1");
- assertParseFails("-128");
- assertParseFails("256");
- }
-
- public void testMaxValue() {
- assertTrue(
- UnsignedBytes.compare(UnsignedBytes.MAX_VALUE, (byte) (UnsignedBytes.MAX_VALUE + 1)) > 0);
- }
-
- public void testParseUnsignedByteWithRadix() throws NumberFormatException {
- // We can easily afford to test this exhaustively.
- for (int radix = Character.MIN_RADIX; radix <= Character.MAX_RADIX; radix++) {
- for (int i = 0; i <= 0xff; i++) {
- assertEquals((byte) i, UnsignedBytes.parseUnsignedByte(Integer.toString(i, radix), radix));
- }
- assertParseFails(Integer.toString(1000, radix), radix);
- assertParseFails(Integer.toString(-1, radix), radix);
- assertParseFails(Integer.toString(-128, radix), radix);
- assertParseFails(Integer.toString(256, radix), radix);
- }
- }
-
- public void testParseUnsignedByteThrowsExceptionForInvalidRadix() {
- // Valid radix values are Character.MIN_RADIX to Character.MAX_RADIX,
- // inclusive.
- try {
- UnsignedBytes.parseUnsignedByte("0", Character.MIN_RADIX - 1);
- fail();
- } catch (NumberFormatException expected) {
- }
-
- try {
- UnsignedBytes.parseUnsignedByte("0", Character.MAX_RADIX + 1);
- fail();
- } catch (NumberFormatException expected) {
- }
-
- // The radix is used as an array index, so try a negative value.
- try {
- UnsignedBytes.parseUnsignedByte("0", -1);
- fail();
- } catch (NumberFormatException expected) {
- }
- }
-
- public void testToString() {
- // We can easily afford to test this exhaustively.
- for (int i = 0; i <= 0xff; i++) {
- assertEquals(Integer.toString(i), UnsignedBytes.toString((byte) i));
- }
- }
-
- public void testToStringWithRadix() {
- // We can easily afford to test this exhaustively.
- for (int radix = Character.MIN_RADIX; radix <= Character.MAX_RADIX; radix++) {
- for (int i = 0; i <= 0xff; i++) {
- assertEquals(Integer.toString(i, radix), UnsignedBytes.toString((byte) i, radix));
- }
- }
- }
-
- public void testJoin() {
- assertEquals("", UnsignedBytes.join(",", new byte[] {}));
- assertEquals("1", UnsignedBytes.join(",", new byte[] {(byte) 1}));
- assertEquals("1,2", UnsignedBytes.join(",", (byte) 1, (byte) 2));
- assertEquals("123", UnsignedBytes.join("", (byte) 1, (byte) 2, (byte) 3));
- assertEquals("128,255", UnsignedBytes.join(",", (byte) 128, (byte) -1));
- }
-
- private static String unsafeComparatorClassName() {
- return UnsignedBytes.LexicographicalComparatorHolder.class.getName() + "$UnsafeComparator";
- }
-
- private static boolean unsafeComparatorAvailable() {
- // See Java Puzzler #44
- // Use reflection instead of catching NoClassDefFoundError
- try {
- Class.forName(unsafeComparatorClassName());
- return true;
- } catch (Error | ClassNotFoundException tolerable) {
- /*
- * We're probably running on Android.
- *
- * A note on exception types:
- *
- * Android API level 10 throws ExceptionInInitializerError the first time and
- * ClassNotFoundException thereafter.
- *
- * Android API level 26 and JVM8 both let our Error propagate directly the first time and
- * throw NoClassDefFoundError thereafter. This is the proper behavior according to the spec.
- * See https://docs.oracle.com/javase/specs/jls/se8/html/jls-12.html#jls-12.4.2 (steps #11 and
- * #5).
- *
- * Note that that "first time" might happen in a test other than
- * testLexicographicalComparatorChoice!
- */
- return false;
- }
- }
-
- public void testLexicographicalComparatorChoice() throws Exception {
- Comparator<byte[]> defaultComparator = UnsignedBytes.lexicographicalComparator();
- assertNotNull(defaultComparator);
- assertSame(defaultComparator, UnsignedBytes.lexicographicalComparator());
- if (unsafeComparatorAvailable()) {
- assertSame(defaultComparator.getClass(), Class.forName(unsafeComparatorClassName()));
- } else {
- assertSame(defaultComparator, UnsignedBytes.lexicographicalComparatorJavaImpl());
- }
- }
-
- public void testLexicographicalComparator() {
- List<byte[]> ordered =
- Arrays.asList(
- new byte[] {},
- new byte[] {LEAST},
- new byte[] {LEAST, LEAST},
- new byte[] {LEAST, (byte) 1},
- new byte[] {(byte) 1},
- new byte[] {(byte) 1, LEAST},
- new byte[] {GREATEST, GREATEST - (byte) 1},
- new byte[] {GREATEST, GREATEST},
- new byte[] {GREATEST, GREATEST, GREATEST});
-
- // The Unsafe implementation if it's available. Otherwise, the Java implementation.
- Comparator<byte[]> comparator = UnsignedBytes.lexicographicalComparator();
- Helpers.testComparator(comparator, ordered);
- assertSame(comparator, SerializableTester.reserialize(comparator));
-
- // The Java implementation.
- Comparator<byte[]> javaImpl = UnsignedBytes.lexicographicalComparatorJavaImpl();
- Helpers.testComparator(javaImpl, ordered);
- assertSame(javaImpl, SerializableTester.reserialize(javaImpl));
- }
-
- @SuppressWarnings("unchecked")
- public void testLexicographicalComparatorLongInputs() {
- Random rnd = new Random();
- for (Comparator<byte[]> comparator :
- Arrays.asList(
- UnsignedBytes.lexicographicalComparator(),
- UnsignedBytes.lexicographicalComparatorJavaImpl())) {
- for (int trials = 10; trials-- > 0; ) {
- byte[] left = new byte[1 + rnd.nextInt(32)];
- rnd.nextBytes(left);
- byte[] right = left.clone();
- assertTrue(comparator.compare(left, right) == 0);
- int i = rnd.nextInt(left.length);
- left[i] ^= (byte) (1 + rnd.nextInt(255));
- assertTrue(comparator.compare(left, right) != 0);
- assertEquals(
- comparator.compare(left, right) > 0, UnsignedBytes.compare(left[i], right[i]) > 0);
- }
- }
- }
-
- public void testSort() {
- testSort(new byte[] {}, new byte[] {});
- testSort(new byte[] {2}, new byte[] {2});
- testSort(new byte[] {2, 1, 0}, new byte[] {0, 1, 2});
- testSort(new byte[] {2, GREATEST, 1, LEAST}, new byte[] {LEAST, 1, 2, GREATEST});
- }
-
- static void testSort(byte[] input, byte[] expected) {
- input = Arrays.copyOf(input, input.length);
- UnsignedBytes.sort(input);
- assertTrue(Arrays.equals(expected, input));
- }
-
- static void testSort(byte[] input, int from, int to, byte[] expected) {
- input = Arrays.copyOf(input, input.length);
- UnsignedBytes.sort(input, from, to);
- assertTrue(Arrays.equals(expected, input));
- }
-
- public void testSortIndexed() {
- testSort(new byte[] {}, 0, 0, new byte[] {});
- testSort(new byte[] {2}, 0, 1, new byte[] {2});
- testSort(new byte[] {2, 1, 0}, 0, 2, new byte[] {1, 2, 0});
- testSort(new byte[] {2, GREATEST, 1, LEAST}, 1, 4, new byte[] {2, LEAST, 1, GREATEST});
- }
-
- public void testSortDescending() {
- testSortDescending(new byte[] {}, new byte[] {});
- testSortDescending(new byte[] {1}, new byte[] {1});
- testSortDescending(new byte[] {1, 2}, new byte[] {2, 1});
- testSortDescending(new byte[] {1, 3, 1}, new byte[] {3, 1, 1});
- testSortDescending(
- new byte[] {GREATEST - 1, 1, GREATEST - 2, 2},
- new byte[] {GREATEST - 1, GREATEST - 2, 2, 1});
- }
-
- private static void testSortDescending(byte[] input, byte[] expectedOutput) {
- input = Arrays.copyOf(input, input.length);
- UnsignedBytes.sortDescending(input);
- assertTrue(Arrays.equals(expectedOutput, input));
- }
-
- private static void testSortDescending(
- byte[] input, int fromIndex, int toIndex, byte[] expectedOutput) {
- input = Arrays.copyOf(input, input.length);
- UnsignedBytes.sortDescending(input, fromIndex, toIndex);
- assertTrue(Arrays.equals(expectedOutput, input));
- }
-
- public void testSortDescendingIndexed() {
- testSortDescending(new byte[] {}, 0, 0, new byte[] {});
- testSortDescending(new byte[] {1}, 0, 1, new byte[] {1});
- testSortDescending(new byte[] {1, 2}, 0, 2, new byte[] {2, 1});
- testSortDescending(new byte[] {1, 3, 1}, 0, 2, new byte[] {3, 1, 1});
- testSortDescending(new byte[] {1, 3, 1}, 0, 1, new byte[] {1, 3, 1});
- testSortDescending(
- new byte[] {GREATEST - 1, 1, GREATEST - 2, 2},
- 1,
- 3,
- new byte[] {GREATEST - 1, GREATEST - 2, 1, 2});
- }
-
- public void testNulls() {
- new NullPointerTester().testAllPublicStaticMethods(UnsignedBytes.class);
- }
-}
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