1 files changed, 121 insertions, 0 deletions
diff --git a/eclipse/plugins/com.android.ide.eclipse.tests/src/com/android/ide/eclipse/tests/EclipseTestCollector.java b/eclipse/plugins/com.android.ide.eclipse.tests/src/com/android/ide/eclipse/tests/EclipseTestCollector.java
new file mode 100644
index 000000000..6bbc955ee
--- /dev/null
+++ b/eclipse/plugins/com.android.ide.eclipse.tests/src/com/android/ide/eclipse/tests/EclipseTestCollector.java
@@ -0,0 +1,121 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Eclipse Public License, Version 1.0 (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.eclipse.org/org/documents/epl-v10.php
+ *
+ * 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.android.ide.eclipse.tests;
+
+import org.eclipse.core.runtime.Plugin;
+
+import java.lang.reflect.Modifier;
+import java.net.URL;
+import java.util.Enumeration;
+
+import junit.framework.TestCase;
+import junit.framework.TestSuite;
+
+/**
+ * Class for collecting all test cases in an eclipse plugin
+ *
+ */
+public class EclipseTestCollector {
+
+    /**
+     * Constructor
+     */
+    public EclipseTestCollector() {
+
+    }
+
+    /**
+     * Searches through given plugin, adding all TestCase classes to given suite
+     * @param suite - TestSuite to add to
+     * @param plugin - Plugin to search for tests
+     * @param expectedPackage - expected package for tests. Only test classes
+     *  that start with this package name will be added to suite
+     */
+    @SuppressWarnings({"cast", "unchecked"})
+    public void addTestCases(TestSuite suite, Plugin plugin, String expectedPackage) {
+        if (plugin != null) {
+            Enumeration<?> entries = plugin.getBundle().findEntries("/", "*.class", true);
+
+            while (entries.hasMoreElements()) {
+                URL entry = (URL)entries.nextElement();
+                String filePath = entry.getPath().replace(".class", "");
+                try {
+                  Class<?> testClass = getClass(filePath, expectedPackage);
+                  if (isTestClass(testClass)) {
+                      // In Eclipse 3.6 RCP Windows-x64, the signature has changed from
+                      //    addTestSuite(Class)
+                      // to:
+                      //    addTestSuite(Class<? extends TestCase>)
+                      // which is enough to create an error. To solve it, we cast into the
+                      // generics expected by the JUnit framework used by 3.6 and suppress the
+                      // warnings generated by the compiler under 3.5
+                      suite.addTestSuite((Class<? extends TestCase>)testClass);
+                  }
+                }
+                catch (ClassNotFoundException e) {
+                  // ignore, this is not the class we're looking for
+                  //sLogger.log(Level.INFO, "Could not load class " + filePath);
+              }
+            }
+        }
+    }
+
+    /**
+     * Returns true if given class should be added to suite
+     */
+    protected boolean isTestClass(Class<?> testClass) {
+        return TestCase.class.isAssignableFrom(testClass) &&
+          Modifier.isPublic(testClass.getModifiers()) &&
+          hasPublicConstructor(testClass);
+    }
+
+    /**
+     * Returns true if given class has a public constructor
+     */
+    @SuppressWarnings({"unchecked", "cast"})
+    protected boolean hasPublicConstructor(Class<?> testClass) {
+        try {
+            // In Eclipse 3.6 RCP Windows-x64, the signature has changed from
+            //    getTestConstructor(Class)
+            // to:
+            //    getTestConstructor(Class<? extends TestCase>)
+            // which is enough to create an error. To solve it, we cast into the
+            // generics expected by the JUnit framework used by 3.6 and suppress the
+            // warnings generated by the compiler under 3.5
+            TestSuite.getTestConstructor((Class<? extends TestCase>) testClass);
+        } catch(NoSuchMethodException e) {
+            return false;
+        }
+        return true;
+    }
+
+    /**
+     * Load the class given by the plugin aka bundle file path
+     * @param filePath - path of class in bundle
+     * @param expectedPackage - expected package of class
+     * @throws ClassNotFoundException
+     */
+    protected Class<?> getClass(String filePath, String expectedPackage) throws ClassNotFoundException {
+        String dotPath = filePath.replace('/', '.');
+        // remove the output folders, by finding where package name starts
+        int index = dotPath.indexOf(expectedPackage);
+        if (index == -1) {
+            throw new ClassNotFoundException();
+        }
+        String packagePath = dotPath.substring(index);
+        return Class.forName(packagePath);
+    }
+}