Adding old unit tests to test suite.

These tests are copied straight over. They'll still run, but they're
using the old system.

Change-Id: If494519e52ddf858a9febfc55bdae830468cb3c8
diff --git a/test/021-string2/src/Main.java b/test/021-string2/src/Main.java
new file mode 100644
index 0000000..87e4baf
--- /dev/null
+++ b/test/021-string2/src/Main.java
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2007 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.
+ */
+
+import junit.framework.Assert;
+
+/**
+ * more string tests
+ */
+public class Main {
+    public static void main(String args[]) {
+        String test = "0123456789";
+        String test1 = new String("0123456789");    // different object
+        String test2 = new String("0123456780");    // different value
+        String offset = new String("xxx0123456789yyy");
+        String sub = offset.substring(3, 13);
+        Object blah = new Object();
+
+        Assert.assertTrue(test.equals(test));
+        Assert.assertTrue(test.equals(test1));
+        Assert.assertFalse(test.equals(test2));
+
+        Assert.assertEquals(test.compareTo(test1), 0);
+        Assert.assertTrue(test1.compareTo(test2) > 0);
+        Assert.assertTrue(test2.compareTo(test1) < 0);
+
+        /* compare string with a nonzero offset, in left/right side */
+        Assert.assertEquals(test.compareTo(sub), 0);
+        Assert.assertEquals(sub.compareTo(test), 0);
+        Assert.assertTrue(test.equals(sub));
+        Assert.assertTrue(sub.equals(test));
+        /* same base, one is a substring */
+        Assert.assertFalse(offset.equals(sub));
+        Assert.assertFalse(sub.equals(offset));
+        /* wrong class */
+        Assert.assertFalse(test.equals(blah));
+
+        /* null ptr - throw */
+        try {
+            test.compareTo(null);
+            Assert.fail("didn't get expected npe");
+        } catch (NullPointerException npe) {
+            System.out.println("Got expected npe");
+        }
+        /* null ptr - ok */
+        Assert.assertFalse(test.equals(null));
+
+        test = test.substring(1);
+        Assert.assertTrue(test.equals("123456789"));
+        Assert.assertFalse(test.equals(test1));
+
+        test = test.substring(1);
+        Assert.assertTrue(test.equals("23456789"));
+
+        test = test.substring(1);
+        Assert.assertTrue(test.equals("3456789"));
+
+        test = test.substring(1);
+        Assert.assertTrue(test.equals("456789"));
+
+        test = test.substring(3,5);
+        Assert.assertTrue(test.equals("78"));
+
+        test = "this/is/a/path";
+        String[] strings = test.split("/");
+        Assert.assertEquals(4, strings.length);
+
+        Assert.assertEquals("this is a path", test.replaceAll("/", " "));
+        Assert.assertEquals("this is a path", test.replace("/", " "));
+    }
+}