| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * 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 libcore.java.util.function; |
| |
| import junit.framework.TestCase; |
| |
| import java.util.concurrent.atomic.AtomicBoolean; |
| import java.util.function.IntPredicate; |
| |
| public class IntPredicateTest extends TestCase { |
| |
| public void testAnd() throws Exception { |
| int arg = 5; |
| |
| AtomicBoolean alwaysTrueInvoked = new AtomicBoolean(false); |
| AtomicBoolean alwaysTrue2Invoked = new AtomicBoolean(false); |
| AtomicBoolean alwaysFalseInvoked = new AtomicBoolean(false); |
| AtomicBoolean alwaysFalse2Invoked = new AtomicBoolean(false); |
| AtomicBoolean[] invocationState = { |
| alwaysTrueInvoked, alwaysTrue2Invoked, alwaysFalseInvoked, alwaysFalse2Invoked }; |
| |
| IntPredicate alwaysTrue = |
| x -> { alwaysTrueInvoked.set(true); assertEquals(x, arg); return true; }; |
| IntPredicate alwaysTrue2 = |
| x -> { alwaysTrue2Invoked.set(true); assertEquals(x, arg); return true; }; |
| IntPredicate alwaysFalse = |
| x -> { alwaysFalseInvoked.set(true); assertEquals(x, arg); return false; }; |
| IntPredicate alwaysFalse2 = |
| x -> { alwaysFalse2Invoked.set(true); assertEquals(x, arg); return false; }; |
| |
| // true && true |
| resetToFalse(invocationState); |
| assertTrue(alwaysTrue.and(alwaysTrue2).test(arg)); |
| assertTrue(alwaysTrueInvoked.get() && alwaysTrue2Invoked.get()); |
| |
| // true && false |
| resetToFalse(invocationState); |
| assertFalse(alwaysTrue.and(alwaysFalse).test(arg)); |
| assertTrue(alwaysTrueInvoked.get() && alwaysFalseInvoked.get()); |
| |
| // false && false |
| resetToFalse(invocationState); |
| assertFalse(alwaysFalse.and(alwaysFalse2).test(arg)); |
| assertTrue(alwaysFalseInvoked.get() && !alwaysFalse2Invoked.get()); |
| |
| // false && true |
| resetToFalse(invocationState); |
| assertFalse(alwaysFalse.and(alwaysTrue).test(arg)); |
| assertTrue(alwaysFalseInvoked.get() && !alwaysTrueInvoked.get()); |
| } |
| |
| public void testAnd_null() throws Exception { |
| IntPredicate alwaysTrue = x -> true; |
| try { |
| alwaysTrue.and(null); |
| fail(); |
| } catch (NullPointerException expected) {} |
| } |
| |
| public void testNegate() throws Exception { |
| int arg = 5; |
| IntPredicate alwaysTrue = x -> { assertEquals(x, arg); return true; }; |
| assertFalse(alwaysTrue.negate().test(arg)); |
| |
| IntPredicate alwaysFalse = x -> { assertEquals(x, arg); return false; }; |
| assertTrue(alwaysFalse.negate().test(arg)); |
| } |
| |
| public void testOr() throws Exception { |
| int arg = 5; |
| |
| AtomicBoolean alwaysTrueInvoked = new AtomicBoolean(false); |
| AtomicBoolean alwaysTrue2Invoked = new AtomicBoolean(false); |
| AtomicBoolean alwaysFalseInvoked = new AtomicBoolean(false); |
| AtomicBoolean alwaysFalse2Invoked = new AtomicBoolean(false); |
| AtomicBoolean[] invocationState = { |
| alwaysTrueInvoked, alwaysTrue2Invoked, alwaysFalseInvoked, alwaysFalse2Invoked }; |
| |
| IntPredicate alwaysTrue = |
| x -> { alwaysTrueInvoked.set(true); assertEquals(x, arg); return true; }; |
| IntPredicate alwaysTrue2 = |
| x -> { alwaysTrue2Invoked.set(true); assertEquals(x, arg); return true; }; |
| IntPredicate alwaysFalse = |
| x -> { alwaysFalseInvoked.set(true); assertEquals(x, arg); return false; }; |
| IntPredicate alwaysFalse2 = |
| x -> { alwaysFalse2Invoked.set(true); assertEquals(x, arg); return false; }; |
| |
| // true || true |
| resetToFalse(invocationState); |
| assertTrue(alwaysTrue.or(alwaysTrue2).test(arg)); |
| assertTrue(alwaysTrueInvoked.get() && !alwaysTrue2Invoked.get()); |
| |
| // true || false |
| resetToFalse(invocationState); |
| assertTrue(alwaysTrue.or(alwaysFalse).test(arg)); |
| assertTrue(alwaysTrueInvoked.get() && !alwaysFalseInvoked.get()); |
| |
| // false || false |
| resetToFalse(invocationState); |
| assertFalse(alwaysFalse.or(alwaysFalse2).test(arg)); |
| assertTrue(alwaysFalseInvoked.get() && alwaysFalse2Invoked.get()); |
| |
| // false || true |
| resetToFalse(invocationState); |
| assertTrue(alwaysFalse.or(alwaysTrue).test(arg)); |
| assertTrue(alwaysFalseInvoked.get() && alwaysTrueInvoked.get()); |
| } |
| |
| public void testOr_null() throws Exception { |
| IntPredicate alwaysTrue = x -> true; |
| try { |
| alwaysTrue.or(null); |
| fail(); |
| } catch (NullPointerException expected) {} |
| } |
| |
| private static void resetToFalse(AtomicBoolean... toResets) { |
| for (AtomicBoolean toReset : toResets) { |
| toReset.set(false); |
| } |
| } |
| } |