/*
* Copyright 2007 Google Inc.
*
* 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.gwt.emultest.java.lang;
import com.google.gwt.junit.client.GWTTestCase;
/**
* TODO: document me.
*/
public class LongTest extends GWTTestCase {
@Override
public String getModuleName() {
return "com.google.gwt.emultest.EmulSuite";
}
public void testBinaryString() {
assertEquals("10001111101101101111011110001100100000000",
Long.toBinaryString(1234500000000L));
assertEquals("0", Long.toBinaryString(0L));
assertEquals(
"1111111111111111111111101110000010010010000100001110011100000000",
Long.toBinaryString(-1234500000000L));
}
public void testBitCount() {
assertEquals(0, Long.bitCount(0));
assertEquals(1, Long.bitCount(1));
assertEquals(64, Long.bitCount(-1));
assertEquals(63, Long.bitCount(Long.MAX_VALUE));
assertEquals(1, Long.bitCount(Long.MIN_VALUE));
}
public void testConstants() {
assertEquals(64, Long.SIZE);
assertEquals(0x7fffffffffffffffL, Long.MAX_VALUE);
assertEquals(0x8000000000000000L, Long.MIN_VALUE);
}
public void testHighestOneBit() {
assertEquals(0, Long.highestOneBit(0));
assertEquals(Long.MIN_VALUE, Long.highestOneBit(-1));
assertEquals(Long.MIN_VALUE, Long.highestOneBit(-256));
assertEquals(1, Long.highestOneBit(1));
assertEquals(0x80, Long.highestOneBit(0x88));
assertEquals(0x4000000000000000L, Long.highestOneBit(Long.MAX_VALUE));
}
public void testLowestOneBit() {
assertEquals(0, Long.lowestOneBit(0));
assertEquals(1, Long.lowestOneBit(-1));
assertEquals(0x100, Long.lowestOneBit(-256));
assertEquals(1, Long.lowestOneBit(1));
assertEquals(0x80, Long.lowestOneBit(0x780));
assertEquals(Long.MIN_VALUE, Long.lowestOneBit(Long.MIN_VALUE));
}
public void testNumberOfLeadingZeros() {
assertEquals(64, Long.numberOfLeadingZeros(0));
assertEquals(63, Long.numberOfLeadingZeros(1));
assertEquals(0, Long.numberOfLeadingZeros(-1));
assertEquals(32, Long.numberOfLeadingZeros(0x80000000L));
assertEquals(1, Long.numberOfLeadingZeros(Long.MAX_VALUE));
assertEquals(0, Long.numberOfLeadingZeros(Long.MIN_VALUE));
assertEquals(0, Long.numberOfLeadingZeros(-0x80000000L));
}
public void testNumberOfTrailingZeros() {
assertEquals(64, Long.numberOfTrailingZeros(0));
assertEquals(0, Long.numberOfTrailingZeros(1));
assertEquals(0, Long.numberOfTrailingZeros(-1));
assertEquals(31, Long.numberOfTrailingZeros(0x80000000L));
assertEquals(0, Long.numberOfTrailingZeros(Long.MAX_VALUE));
assertEquals(63, Long.numberOfTrailingZeros(Long.MIN_VALUE));
assertEquals(20, Long.numberOfTrailingZeros(-0x7ff00000L));
}
public void testParse() {
assertEquals(0L, Long.parseLong("0"));
assertEquals(100000000000L, Long.parseLong("100000000000"));
assertEquals(-100000000000L, Long.parseLong("-100000000000"));
assertEquals(10L, Long.parseLong("010"));
try {
Long.parseLong("10L");
fail("expected NumberFormatException");
} catch (NumberFormatException ex) {
// expected
}
try {
Long.parseLong("");
fail("expected NumberFormatException");
} catch (NumberFormatException ex) {
// expected
}
try {
// Issue 2636
new Long("");
fail("expected NumberFormatException");
} catch (NumberFormatException ex) {
// expected
}
try {
// issue 3647
Long.parseLong("-");
fail("expected NumberFormatException");
} catch (NumberFormatException ex) {
// expected
}
try {
// issue 3647
new Long("-");
fail("expected NumberFormatException");
} catch (NumberFormatException ex) {
// expected
}
try {
Long.parseLong(" -");
fail("expected NumberFormatException");
} catch (NumberFormatException ex) {
// expected
}
try {
new Long(" -");
fail("expected NumberFormatException");
} catch (NumberFormatException ex) {
// expected
}
try {
Long.parseLong("- ");
fail("expected NumberFormatException");
} catch (NumberFormatException ex) {
// expected
}
try {
new Long("- ");
fail("expected NumberFormatException");
} catch (NumberFormatException ex) {
// expected
}
try {
Long.parseLong("deadbeefbeef");
fail("expected NumberFormatException");
} catch (NumberFormatException ex) {
// expected
}
try {
Long.parseLong("123456789ab123456789ab123456789ab123456789ab", 12);
fail("expected NumberFormatException");
} catch (NumberFormatException ex) {
// expected
}
assertEquals(0L, Long.parseLong("0", 12));
assertEquals(73686780563L, Long.parseLong("123456789ab", 12));
assertEquals(-73686780563L, Long.parseLong("-123456789ab", 12));
try {
Long.parseLong("c", 12);
fail("expected NumberFormatException");
} catch (NumberFormatException ex) {
// expected
}
assertEquals(0L, Long.parseLong("0", 16));
assertEquals(-1L, Long.parseLong("-1", 16));
assertEquals(1L, Long.parseLong("1", 16));
assertEquals(0xdeadbeefdeadL, Long.parseLong("deadbeefdead", 16));
assertEquals(-0xdeadbeefdeadL, Long.parseLong("-deadbeefdead", 16));
try {
Long.parseLong("deadbeefdeadbeefdeadbeefdeadbeef", 16);
fail("expected NumberFormatException");
} catch (NumberFormatException ex) {
// expected
}
try {
Long.parseLong("g", 16);
fail("expected NumberFormatException");
} catch (NumberFormatException ex) {
// expected
}
}
public void testReverse() {
assertEquals(0L, Long.reverse(0L));
assertEquals(-1L, Long.reverse(-1L));
assertEquals(Long.MIN_VALUE, Long.reverse(1L));
assertEquals(1L, Long.reverse(Long.MIN_VALUE));
assertEquals(0xaaaaaaaaaaaaaaaaL, Long.reverse(0x5555555555555555L));
assertEquals(0xaaaaaaaa00000000L, Long.reverse(0x55555555L));
assertEquals(0xaa00aa00aa00aa00L, Long.reverse(0x0055005500550055L));
assertEquals(0x5555555555555555L, Long.reverse(0xaaaaaaaaaaaaaaaaL));
assertEquals(0x55555555L, Long.reverse(0xaaaaaaaa00000000L));
assertEquals(0x0055005500550055L, Long.reverse(0xaa00aa00aa00aa00L));
}
public void testReverseBytes() {
assertEquals(0, Long.reverseBytes(0));
assertEquals(-1, Long.reverseBytes(-1));
assertEquals(0x80L, Long.reverseBytes(Long.MIN_VALUE));
assertEquals(Long.MIN_VALUE, Long.reverseBytes(0x80L));
assertEquals(0xf0debc9a78563412L, Long.reverseBytes(0x123456789abcdef0L));
}
public void testRotateLeft() {
assertEquals(0, Long.rotateLeft(0, 4));
assertEquals(0x2, Long.rotateLeft(1, 1));
assertEquals(0x10, Long.rotateLeft(1, 4));
assertEquals(-1, Long.rotateLeft(-1, 4));
assertEquals(Long.MIN_VALUE, Long.rotateLeft(0x4000000000000000L, 1));
assertEquals(1, Long.rotateLeft(Long.MIN_VALUE, 1));
}
public void testRotateRight() {
assertEquals(0, Long.rotateRight(0, 4));
assertEquals(Long.MIN_VALUE, Long.rotateRight(1, 1));
assertEquals(0x1000000000000000L, Long.rotateRight(1, 4));
assertEquals(-1, Long.rotateRight(-1, 4));
}
public void testSignum() {
assertEquals(0, Long.signum(0));
assertEquals(1, Long.signum(1));
assertEquals(-1, Long.signum(-1));
assertEquals(1, Long.signum(Long.MAX_VALUE));
assertEquals(-1, Long.signum(Long.MIN_VALUE));
}
public void testStaticValueOf() {
assertEquals(Long.MIN_VALUE, Long.valueOf(Long.MIN_VALUE).longValue());
assertEquals(Long.MAX_VALUE, Long.valueOf(Long.MAX_VALUE).longValue());
}
public void testToHexString() {
assertEquals("1234500000000", Long.toHexString(0x1234500000000L));
assertEquals("fff1234500000000", Long.toHexString(0xFFF1234500000000L));
}
}