test/hotspot/jtreg/testlibrary_tests/AssertsTest.java
changeset 47216 71c04702a3d5
parent 40631 ed82623d7831
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/testlibrary_tests/AssertsTest.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,238 @@
+/*
+ * Copyright (c) 2013, 2016, 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.
+ */
+
+import static jdk.test.lib.Asserts.*;
+
+/* @test
+ * @summary Tests the different assertions in the Assert class
+ * @modules java.base/jdk.internal.misc
+ * @library /test/lib
+ */
+public class AssertsTest {
+    private static class Foo implements Comparable<Foo> {
+        final int id;
+        public Foo(int id) {
+            this.id = id;
+        }
+
+        public int compareTo(Foo f) {
+            return new Integer(id).compareTo(new Integer(f.id));
+        }
+    }
+
+    public static void main(String[] args) throws Exception {
+        testLessThan();
+        testLessThanOrEqual();
+        testEquals();
+        testGreaterThanOrEqual();
+        testGreaterThan();
+        testNotEquals();
+        testNull();
+        testNotNull();
+        testTrue();
+        testFalse();
+    }
+
+    private static void testLessThan() throws Exception {
+        expectPass(Assertion.LT, 1, 2);
+
+        expectFail(Assertion.LT, 2, 2);
+        expectFail(Assertion.LT, 2, 1);
+        expectFail(Assertion.LT, null, 2);
+        expectFail(Assertion.LT, 2, null);
+    }
+
+    private static void testLessThanOrEqual() throws Exception {
+        expectPass(Assertion.LTE, 1, 2);
+        expectPass(Assertion.LTE, 2, 2);
+
+        expectFail(Assertion.LTE, 3, 2);
+        expectFail(Assertion.LTE, null, 2);
+        expectFail(Assertion.LTE, 2, null);
+    }
+
+    private static void testEquals() throws Exception {
+        expectPass(Assertion.EQ, 1, 1);
+        expectPass(Assertion.EQ, null, null);
+
+        Foo f1 = new Foo(1);
+        expectPass(Assertion.EQ, f1, f1);
+
+        Foo f2 = new Foo(1);
+        expectFail(Assertion.EQ, f1, f2);
+        expectFail(Assertion.LTE, null, 2);
+        expectFail(Assertion.LTE, 2, null);
+    }
+
+    private static void testGreaterThanOrEqual() throws Exception {
+        expectPass(Assertion.GTE, 1, 1);
+        expectPass(Assertion.GTE, 2, 1);
+
+        expectFail(Assertion.GTE, 1, 2);
+        expectFail(Assertion.GTE, null, 2);
+        expectFail(Assertion.GTE, 2, null);
+    }
+
+    private static void testGreaterThan() throws Exception {
+        expectPass(Assertion.GT, 2, 1);
+
+        expectFail(Assertion.GT, 1, 1);
+        expectFail(Assertion.GT, 1, 2);
+        expectFail(Assertion.GT, null, 2);
+        expectFail(Assertion.GT, 2, null);
+    }
+
+    private static void testNotEquals() throws Exception {
+        expectPass(Assertion.NE, null, 1);
+        expectPass(Assertion.NE, 1, null);
+
+        Foo f1 = new Foo(1);
+        Foo f2 = new Foo(1);
+        expectPass(Assertion.NE, f1, f2);
+
+        expectFail(Assertion.NE, null, null);
+        expectFail(Assertion.NE, f1, f1);
+        expectFail(Assertion.NE, 1, 1);
+    }
+
+    private static void testNull() throws Exception {
+        expectPass(Assertion.NULL, null);
+
+        expectFail(Assertion.NULL, 1);
+    }
+
+    private static void testNotNull() throws Exception {
+        expectPass(Assertion.NOTNULL, 1);
+
+        expectFail(Assertion.NOTNULL, null);
+    }
+
+    private static void testTrue() throws Exception {
+        expectPass(Assertion.TRUE, true);
+
+        expectFail(Assertion.TRUE, false);
+    }
+
+    private static void testFalse() throws Exception {
+        expectPass(Assertion.FALSE, false);
+
+        expectFail(Assertion.FALSE, true);
+    }
+
+    private static <T extends Comparable<T>> void expectPass(Assertion assertion, T ... args)
+        throws Exception {
+        Assertion.run(assertion, args);
+    }
+
+    private static <T extends Comparable<T>> void expectFail(Assertion assertion, T ... args)
+        throws Exception {
+        try {
+            Assertion.run(assertion, args);
+        } catch (RuntimeException e) {
+            return;
+        }
+        throw new Exception("Expected " + Assertion.format(assertion, (Object[]) args) +
+                            " to throw a RuntimeException");
+    }
+
+}
+
+enum Assertion {
+    LT, LTE, EQ, GTE, GT, NE, NULL, NOTNULL, FALSE, TRUE;
+
+    public static <T extends Comparable<T>> void run(Assertion assertion, T ... args) {
+        String msg = "Expected " + format(assertion, args) + " to pass";
+        switch (assertion) {
+            case LT:
+                assertLessThan(args[0], args[1], msg);
+                break;
+            case LTE:
+                assertLessThanOrEqual(args[0], args[1], msg);
+                break;
+            case EQ:
+                assertEquals(args[0], args[1], msg);
+                break;
+            case GTE:
+                assertGreaterThanOrEqual(args[0], args[1], msg);
+                break;
+            case GT:
+                assertGreaterThan(args[0], args[1], msg);
+                break;
+            case NE:
+                assertNotEquals(args[0], args[1], msg);
+                break;
+            case NULL:
+                assertNull(args == null ? args : args[0], msg);
+                break;
+            case NOTNULL:
+                assertNotNull(args == null ? args : args[0], msg);
+                break;
+            case FALSE:
+                assertFalse((Boolean) args[0], msg);
+                break;
+            case TRUE:
+                assertTrue((Boolean) args[0], msg);
+                break;
+            default:
+                // do nothing
+        }
+    }
+
+    public static String format(Assertion assertion, Object ... args) {
+        switch (assertion) {
+            case LT:
+                return asString("assertLessThan", args);
+            case LTE:
+                return asString("assertLessThanOrEqual", args);
+            case EQ:
+                return asString("assertEquals", args);
+            case GTE:
+                return asString("assertGreaterThanOrEquals", args);
+            case GT:
+                return asString("assertGreaterThan", args);
+            case NE:
+                return asString("assertNotEquals", args);
+            case NULL:
+                return asString("assertNull", args);
+            case NOTNULL:
+                return asString("assertNotNull", args);
+            case FALSE:
+                return asString("assertFalse", args);
+            case TRUE:
+                return asString("assertTrue", args);
+            default:
+                return "";
+        }
+    }
+
+    private static String asString(String assertion, Object ... args) {
+        if (args == null) {
+            return String.format("%s(null)", assertion);
+        }
+        if (args.length == 1) {
+            return String.format("%s(%s)", assertion, args[0]);
+        } else {
+            return String.format("%s(%s, %s)", assertion, args[0], args[1]);
+        }
+    }
+}