Bug 1270213 - Add UUIDUtil.isUUID. r=sebastian

MozReview-Commit-ID: S5BbzEVEka

--HG--
extra : rebase_source : 6ae0a62d4747cb2fd9df23a0604918461c5359b1

mobile/android/base/java/org/mozilla/gecko/util/UUIDUtil.java

@@ -0,0 +1,19 @@
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+package org.mozilla.gecko.util;
+
+import java.util.regex.Pattern;
+
+/**
+ * Utilities for UUIDs.
+ */
+public class UUIDUtil {
+    private UUIDUtil() {}
+
+    public static final String UUID_REGEX = "[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}";
+    public static final Pattern UUID_PATTERN = Pattern.compile(UUID_REGEX);
+}

mobile/android/base/moz.build

@@ -126,6 +126,7 @@ gujar.sources += ['java/org/mozilla/gecko/' + x for x in [
     'util/StringUtils.java',
     'util/ThreadUtils.java',
     'util/UIAsyncTask.java',
+    'util/UUIDUtil.java',
     'util/WeakReferenceHandler.java',
     'util/WebActivityMapper.java',
     'util/WindowUtils.java',

mobile/android/tests/background/junit4/src/org/mozilla/gecko/util/TestUUIDUtil.java

@@ -0,0 +1,51 @@
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+package org.mozilla.gecko.util;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mozilla.gecko.background.testhelpers.TestRunner;
+
+import static org.junit.Assert.*;
+
+/**
+ * Tests for uuid utils.
+ */
+@RunWith(TestRunner.class)
+public class TestUUIDUtil {
+    private static final String[] validUUIDs = {
+        "904cd9f8-af63-4525-8ce0-b9127e5364fa",
+        "8d584bd2-00ea-4043-a617-ed4ce7018ed0",
+        "3abad327-2669-4f68-b9ef-7ace8c5314d6",
+    };
+
+    private static final String[] invalidUUIDs = {
+        "its-not-a-uuid-mate",
+        "904cd9f8-af63-4525-8ce0-b9127e5364falol",
+        "904cd9f8-af63-4525-8ce0-b9127e5364f",
+    };
+
+    @Test
+    public void testUUIDRegex() {
+        for (final String uuid : validUUIDs) {
+            assertTrue("Valid UUID matches UUID-regex", uuid.matches(UUIDUtil.UUID_REGEX));
+        }
+        for (final String uuid : invalidUUIDs) {
+            assertFalse("Invalid UUID does not match UUID-regex", uuid.matches(UUIDUtil.UUID_REGEX));
+        }
+    }
+
+    @Test
+    public void testUUIDPattern() {
+        for (final String uuid : validUUIDs) {
+            assertTrue("Valid UUID matches UUID-regex", UUIDUtil.UUID_PATTERN.matcher(uuid).matches());
+        }
+        for (final String uuid : invalidUUIDs) {
+            assertFalse("Invalid UUID does not match UUID-regex", UUIDUtil.UUID_PATTERN.matcher(uuid).matches());
+        }
+    }
+}