changeset 7802:3a341b419f9b

Unit tests to verify wrapper classes for Collection at least override default methods
author henryjen
date Tue, 02 Apr 2013 23:29:12 -0700
parents 10ec7fa058dd
children b6a9eaeb0f16
files test/java/util/CollectionExtensionMethods/Wrappers.java
diffstat 1 files changed, 131 insertions(+), 0 deletions(-) [+]
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/java/util/CollectionExtensionMethods/Wrappers.java	Tue Apr 02 23:29:12 2013 -0700
@@ -0,0 +1,131 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * @test
+ * @run testng Wrappers
+ * @summary Unit tests for wrapping classes should delegate default methods
+ */
+
+import java.lang.reflect.Method;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Objects;
+import java.util.TreeMap;
+import java.util.TreeSet;
+
+import org.testng.annotations.Test;
+import org.testng.annotations.DataProvider;
+
+import static org.testng.Assert.assertFalse;
+
+@Test(groups = "unit")
+public class Wrappers {
+    static Object[][] collections;
+
+    @DataProvider(name="collections")
+    public static Object[][] collectionCases() {
+        if (collections != null) {
+            return collections;
+        }
+
+        List<Object[]> cases = new ArrayList<>();
+        LinkedList<Integer> seedList = new LinkedList<>();
+        TreeSet<Integer> seedSet = new TreeSet<>();
+        TreeMap<Integer, Integer> seedMap = new TreeMap<>();
+
+        for (int i = 1; i <= 10; i++) {
+            seedList.add(i);
+            seedSet.add(i);
+            seedMap.put(i, i);
+        }
+
+        cases.add(new Object[] { Collections.unmodifiableCollection(seedList) });
+        cases.add(new Object[] { Collections.unmodifiableList(seedList) });
+        cases.add(new Object[] { Collections.unmodifiableSet(seedSet) });
+        cases.add(new Object[] { Collections.unmodifiableSortedSet(seedSet) });
+
+        // As sets from map also need to be unmodifiable, thus a wrapping
+        // layer exist and should not have default methods
+        cases.add(new Object[] { Collections.unmodifiableMap(seedMap).entrySet() });
+        cases.add(new Object[] { Collections.unmodifiableMap(seedMap).keySet() });
+        cases.add(new Object[] { Collections.unmodifiableMap(seedMap).values() });
+        cases.add(new Object[] { Collections.unmodifiableSortedMap(seedMap).entrySet() });
+        cases.add(new Object[] { Collections.unmodifiableSortedMap(seedMap).keySet() });
+        cases.add(new Object[] { Collections.unmodifiableSortedMap(seedMap).values() });
+
+        // Synchronized
+        cases.add(new Object[] { Collections.synchronizedCollection(seedList) });
+        cases.add(new Object[] { Collections.synchronizedList(seedList) });
+        cases.add(new Object[] { Collections.synchronizedSet(seedSet) });
+        cases.add(new Object[] { Collections.synchronizedSortedSet(seedSet) });
+
+        // As sets from map also need to be synchronized on the map, thus a
+        // wrapping layer exist and should not have default methods
+        cases.add(new Object[] { Collections.synchronizedMap(seedMap).entrySet() });
+        cases.add(new Object[] { Collections.synchronizedMap(seedMap).keySet() });
+        cases.add(new Object[] { Collections.synchronizedMap(seedMap).values() });
+        cases.add(new Object[] { Collections.synchronizedSortedMap(seedMap).entrySet() });
+        cases.add(new Object[] { Collections.synchronizedSortedMap(seedMap).keySet() });
+        cases.add(new Object[] { Collections.synchronizedSortedMap(seedMap).values() });
+
+        // Checked
+        cases.add(new Object[] { Collections.checkedCollection(seedList, Integer.class) });
+        cases.add(new Object[] { Collections.checkedList(seedList, Integer.class) });
+        cases.add(new Object[] { Collections.checkedSet(seedSet, Integer.class) });
+        cases.add(new Object[] { Collections.checkedSortedSet(seedSet, Integer.class) });
+        cases.add(new Object[] { Collections.checkedQueue(seedList, Integer.class) });
+
+        // asLifoQueue is another wrapper
+        cases.add(new Object[] { Collections.asLifoQueue(seedList) });
+
+        collections = cases.toArray(new Object[0][]);
+        return collections;
+    }
+
+    static Method[] defaultMethods;
+
+    static {
+        ArrayList<Method> list = new ArrayList<>();
+        Method[] methods = Collection.class.getMethods();
+        for (Method m: methods) {
+            if (m.isDefault()) {
+                list.add(m);
+            }
+        }
+        defaultMethods = list.toArray(new Method[0]);
+    }
+
+    @Test(dataProvider = "collections")
+    public static void testAllDefaultMethodsOverrided(Collection c) throws NoSuchMethodException {
+        Class cls = c.getClass();
+        for (Method m: defaultMethods) {
+            Method m2 = cls.getMethod(m.getName(), m.getParameterTypes());
+            // default had been override
+            assertFalse(m2.isDefault(), cls.getCanonicalName());
+        }
+    }
+}
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