| /* |
| * Copyright 2019 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; |
| import com.google.gwt.testing.TestUtils; |
| |
| /** Tests (incorrect) equals semantics for Double. */ |
| public final class DoubleEqualsSemanticsTest extends GWTTestCase { |
| |
| @Override |
| public String getModuleName() { |
| return "com.google.gwt.emultest.EmulSuite"; |
| } |
| |
| public void testEquals() { |
| // Semantics don't match JVM. |
| if (TestUtils.isJvm()) { |
| return; |
| } |
| |
| // Should be assertTrue(Double.valueOf(Double.NaN).equals(Double.NaN)); |
| assertFalse(Double.valueOf(Double.NaN).equals(Double.NaN)); |
| // Should be assertFalse(Double.valueOf(0.0d).equals(-0.0d)); |
| assertTrue(Double.valueOf(0.0d).equals(-0.0d)); |
| |
| // Also make sure the behavior doesn't change when Object trampoline is used. |
| Object o; |
| o = Double.NaN; |
| // Should be assertTrue(o.equals(Double.NaN)); |
| assertFalse(o.equals(Double.NaN)); |
| o = 0.0d; |
| // Should be assertFalse |
| assertTrue(o.equals(-0.0d)); |
| } |
| } |