Replace com.android.internal.util.Predicate with java.util.function.Predicate

Bug: 35089332
Bug: 30188076
Test: make checkbuild
Merged-In: I0a5b4bf520fc39b59d8d790b01e9cff0d54e6d21
Change-Id: I58e4e35e7b7315033d893748f7c79e1ba6732f39

1 files changed, 74 insertions, 0 deletions

diff --git a/test-runner/tests/src/com/android/internal/util/PredicatesTest.java b/test-runner/tests/src/com/android/internal/util/PredicatesTest.java
new file mode 100644
index 000000000000..c46ff051dd33
--- /dev/null
+++ b/test-runner/tests/src/com/android/internal/util/PredicatesTest.java
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2008 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 com.android.internal.util;
+
+import junit.framework.TestCase;
+
+import java.util.ArrayList;
+import java.util.Collections;
+
+public class PredicatesTest extends TestCase {
+
+    private static final Predicate<Object> TRUE = new Predicate<Object>() {
+        public boolean apply(Object o) {
+            return true;
+        }
+    };
+
+    private static final Predicate<Object> FALSE = new Predicate<Object>() {
+        public boolean apply(Object o) {
+            return false;
+        }
+    };
+
+    public void testAndPredicate_AllConditionsTrue() throws Exception {
+        assertTrue(Predicates.and(newArrayList(TRUE)).apply(null));
+        assertTrue(Predicates.and(newArrayList(TRUE, TRUE)).apply(null));
+    }
+
+    public void testAndPredicate_AtLeastOneConditionIsFalse() throws Exception {
+        assertFalse(Predicates.and(newArrayList(FALSE, TRUE, TRUE)).apply(null));
+        assertFalse(Predicates.and(newArrayList(TRUE, FALSE, TRUE)).apply(null));
+        assertFalse(Predicates.and(newArrayList(TRUE, TRUE, FALSE)).apply(null));
+    }
+
+    public void testOrPredicate_AllConditionsTrue() throws Exception {
+        assertTrue(Predicates.or(newArrayList(TRUE, TRUE, TRUE)).apply(null));
+    }
+
+    public void testOrPredicate_AllConditionsFalse() throws Exception {
+        assertFalse(Predicates.or(newArrayList(FALSE, FALSE, FALSE)).apply(null));
+    }
+
+    public void testOrPredicate_AtLeastOneConditionIsTrue() throws Exception {
+        assertTrue(Predicates.or(newArrayList(TRUE, FALSE, FALSE)).apply(null));
+        assertTrue(Predicates.or(newArrayList(FALSE, TRUE, FALSE)).apply(null));
+        assertTrue(Predicates.or(newArrayList(FALSE, FALSE, TRUE)).apply(null));
+    }
+
+    public void testNotPredicate() throws Exception {
+        assertTrue(Predicates.not(FALSE).apply(null));
+        assertFalse(Predicates.not(TRUE).apply(null));
+    }
+
+    private static <E> ArrayList<E> newArrayList(E... elements) {
+        ArrayList<E> list = new ArrayList<E>();
+        Collections.addAll(list, elements);
+        return list;
+    }
+
+}