cmsdk: Add classpathtests.

Change-Id: I78f21934046a8a8917dc59f5423986a7077f4531

tests/src/org/cyanogenmod/tests/versioning/unit/ClassPathException.java

@@ -0,0 +1,26 @@
+/**
+ * Copyright (c) 2015, The CyanogenMod 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.
+ */
+package org.cyanogenmod.tests.versioning.unit;
+
+/**
+ * Created by Adnan on 9/25/15.
+ */
+public class ClassPathException extends Exception {
+
+    public ClassPathException(String message) {
+        super("should not have " + message + " !");
+    }
+}

tests/src/org/cyanogenmod/tests/versioning/unit/ClassPathTest.java

@@ -0,0 +1,158 @@
+/**
+ * Copyright (c) 2015, The CyanogenMod 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.
+ */
+
+package org.cyanogenmod.tests.versioning.unit;
+
+import android.test.AndroidTestCase;
+import android.test.suitebuilder.annotation.LargeTest;
+import android.test.suitebuilder.annotation.SmallTest;
+import dalvik.system.DexFile;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Enumeration;
+
+/**
+ * Created by adnan on 9/22/15.
+ */
+public class ClassPathTest extends AndroidTestCase {
+
+    private static final String CYANOGENMOD_NAMESPACE = "cyanogenmod";
+    private static final String PATH_TO_SYSTEM_FRAMEWORK = "/system/framework";
+
+    private ArrayList<String> mKnownSdkClasses;
+
+    @Override
+    protected void setUp() throws Exception {
+        super.setUp();
+        mKnownSdkClasses = getLoadedClasses();
+    }
+
+    @SmallTest
+    public void testClassLoaderGivesSDKClasses() {
+        /**
+         * Verify we can retrieve our sdk classes from this package
+         */
+        assertNotNull(mKnownSdkClasses);
+        assertTrue(mKnownSdkClasses.size() > 0);
+    }
+
+    @LargeTest
+    public void testBootClassPathIsClean() {
+        File path = new File(PATH_TO_SYSTEM_FRAMEWORK);
+        File[] files = path.listFiles();
+        assertNotNull(files);
+
+        /**
+         * Everything in the in the boot class path needs to not
+         * contain the sdk. Verify integrity of runtime below.
+         */
+        final String bootClassPath = System.getenv("BOOTCLASSPATH");
+
+        ArrayList<String> classPathJars = new ArrayList<String>();
+
+        if (bootClassPath != null) {
+            String[] bootClassPathElements = bootClassPath.split(":");
+            for (String element : bootClassPathElements) {
+                classPathJars.add(element);
+            }
+        } else {
+            throw new AssertionError("No BOOTCLASSPATH defined! ");
+        }
+
+        for (String classPathJar : classPathJars) {
+            try {
+                File jar = new File(classPathJar);
+                DexFile dexFile = new DexFile(jar);
+                assertTrue(isJarClean(dexFile));
+            } catch (IOException e) {
+                throw new AssertionError("Unable to find jar! " + classPathJar +
+                        "\nException " + e.toString());
+            }
+        }
+    }
+
+    @SmallTest
+    public void testSystemServerClassPathIsClean() {
+        /**
+         * Everything in the in the system server class path shouldn't have oat files
+         * it doesn't matter if it contains the sdk or not since the classes won't be loaded
+         * as part of the system class loader
+         */
+        final String systemserverclasspath = System.getenv("SYSTEMSERVERCLASSPATH");
+
+        ArrayList<String> classPathJars = new ArrayList<String>();
+
+        if (systemserverclasspath != null) {
+            String[] bootClassPathElements = systemserverclasspath.split(":");
+            for (String element : bootClassPathElements) {
+                classPathJars.add(element);
+            }
+        } else {
+            throw new AssertionError("No SYSTEMSERVERCLASSPATH defined! ");
+        }
+
+        for (String classPathJar : classPathJars) {
+            try {
+                File jar = new File(classPathJar);
+                DexFile dexFile = new DexFile(jar);
+                fail("IOException should have been thrown, dex file "
+                        + dexFile.getName() + " should not have an oat file");
+            } catch (IOException expected) {
+                expected.printStackTrace();
+            }
+        }
+    }
+
+    private ArrayList<String> getLoadedClasses() {
+        ArrayList<String> listOfClasses = new ArrayList<String>();
+        try {
+            DexFile dexFile = new DexFile(new File(mContext.getPackageCodePath()));
+            Enumeration<String> enumeration = dexFile.entries();
+
+            while (enumeration.hasMoreElements()){
+                String className = enumeration.nextElement();
+                if (className.startsWith(CYANOGENMOD_NAMESPACE)) {
+                    listOfClasses.add(className);
+                }
+            }
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return listOfClasses;
+    }
+
+    private void processAndCompare(String name) throws ClassPathException {
+        if (mKnownSdkClasses.contains(name)) {
+            throw new ClassPathException(name);
+        }
+    }
+
+    private boolean isJarClean(DexFile dexFile) throws AssertionError {
+        Enumeration<String> enumeration = dexFile.entries();
+
+        while (enumeration.hasMoreElements()) {
+            try {
+                processAndCompare(enumeration.nextElement());
+            } catch (ClassPathException e) {
+                throw new AssertionError("Jar file "
+                        + dexFile.getName() + " " + e.getMessage());
+            }
+        }
+        return true;
+    }
+}