Add a "FakeCssMaker" for CSS resources similar to FakeMessagesMaker.
Review at http://gwt-code-reviews.appspot.com/1604804
Review by: skybrian@google.com
git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@10768 8db76d5a-ed1c-0410-87a9-c151d255dfc7
diff --git a/user/src/com/google/gwt/junit/FakeCssMaker.java b/user/src/com/google/gwt/junit/FakeCssMaker.java
new file mode 100644
index 0000000..a726305
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+++ b/user/src/com/google/gwt/junit/FakeCssMaker.java
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2011 Google Inc.
+ *
+ * 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.google.gwt.junit;
+
+import com.google.gwt.resources.client.CssResource;
+
+import java.lang.reflect.InvocationHandler;
+import java.lang.reflect.Method;
+import java.lang.reflect.Proxy;
+
+/**
+ * Helper to make a fake implementation of any {@link CssResource} interface via
+ * reflection, for use in JUnit tests. (This will not work in GWTTestCase.) All
+ * calls to the returned object return the method name.
+ * <p>
+ * Sample use:
+ *
+ * <pre>interface MyCss extends CssResource {
+ * String myStyleName();
+ * }
+ *
+ * public void testSimple() {
+ * MyCss myCss = FakeCssMaker.create(MyCss.class);
+ * assertEquals("myStyleName", messages.myMessage());
+ * }
+ * </pre>
+ */
+public class FakeCssMaker implements InvocationHandler {
+ public static <T extends CssResource> T create(Class<T> cssClass) {
+ return cssClass.cast(Proxy.newProxyInstance(
+ FakeCssMaker.class.getClassLoader(), new Class[] {cssClass},
+ new FakeCssMaker()));
+ }
+
+ public Object invoke(Object proxy, Method method, Object[] args)
+ throws Throwable {
+ return method.getName();
+ }
+}
diff --git a/user/test/com/google/gwt/junit/FakeCssMakerTest.java b/user/test/com/google/gwt/junit/FakeCssMakerTest.java
new file mode 100644
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--- /dev/null
+++ b/user/test/com/google/gwt/junit/FakeCssMakerTest.java
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2011 Google Inc.
+ *
+ * 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.google.gwt.junit;
+
+import com.google.gwt.resources.client.CssResource;
+
+import junit.framework.TestCase;
+
+/**
+ * Tests of FakeCssMaker.
+ */
+public class FakeCssMakerTest extends TestCase {
+ interface MyCss extends CssResource {
+ String myFirstStyleName();
+ String mySecondStyleName();
+ }
+
+ public void testCreate() {
+ MyCss css = FakeCssMaker.create(MyCss.class);
+ assertEquals("myFirstStyleName", css.myFirstStyleName());
+ assertEquals("mySecondStyleName", css.mySecondStyleName());
+ }
+}
