Add LockSettingsStorage tests

Bug: 18163444
Change-Id: I563276e6d445d43d05bf0d3c633440a8e0109b69

1 files changed, 330 insertions, 0 deletions

diff --git a/services/tests/servicestests/src/com/android/server/LockSettingsStorageTests.java b/services/tests/servicestests/src/com/android/server/LockSettingsStorageTests.java
new file mode 100644
index 0000000..bf0e75d
--- /dev/null
+++ b/services/tests/servicestests/src/com/android/server/LockSettingsStorageTests.java
@@ -0,0 +1,330 @@
+/*
+ * Copyright (C) 2014 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
+ */
+
+package com.android.server;
+
+import android.content.Context;
+import android.content.ContextWrapper;
+import android.content.pm.UserInfo;
+import android.database.sqlite.SQLiteDatabase;
+import android.os.FileUtils;
+import android.os.UserManager;
+import android.test.AndroidTestCase;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.concurrent.CountDownLatch;
+
+public class LockSettingsStorageTests extends AndroidTestCase {
+    LockSettingsStorage mStorage;
+    File mStorageDir;
+
+    private File mDb;
+
+    @Override
+    protected void setUp() throws Exception {
+        super.setUp();
+        mStorageDir = new File(getContext().getFilesDir(), "locksettings");
+        mDb = getContext().getDatabasePath("locksettings.db");
+
+        assertTrue(mStorageDir.exists() || mStorageDir.mkdirs());
+        assertTrue(FileUtils.deleteContents(mStorageDir));
+        assertTrue(!mDb.exists() || mDb.delete());
+
+        final Context ctx = getContext();
+        setContext(new ContextWrapper(ctx) {
+            @Override
+            public Object getSystemService(String name) {
+                if (USER_SERVICE.equals(name)) {
+                    return new UserManager(ctx, null) {
+                        @Override
+                        public UserInfo getProfileParent(int userHandle) {
+                            if (userHandle == 2) {
+                                // User 2 is a profile of user 1.
+                                return new UserInfo(1, "name", 0);
+                            }
+                            if (userHandle == 3) {
+                                // User 3 is a profile of user 0.
+                                return new UserInfo(0, "name", 0);
+                            }
+                            return null;
+                        }
+                    };
+                }
+                return super.getSystemService(name);
+            }
+        });
+
+        mStorage = new LockSettingsStorage(getContext(), new LockSettingsStorage.Callback() {
+            @Override
+            public void initialize(SQLiteDatabase db) {
+                mStorage.writeKeyValue(db, "initializedKey", "initialValue", 0);
+            }
+        }) {
+            @Override
+            String getLockPatternFilename(int userId) {
+                return new File(mStorageDir,
+                        super.getLockPatternFilename(userId).replace('/', '-')).getAbsolutePath();
+            }
+
+            @Override
+            String getLockPasswordFilename(int userId) {
+                return new File(mStorageDir,
+                        super.getLockPasswordFilename(userId).replace('/', '-')).getAbsolutePath();
+            }
+        };
+    }
+
+    @Override
+    protected void tearDown() throws Exception {
+        super.tearDown();
+        mStorage.closeDatabase();
+    }
+
+    public void testKeyValue_InitializeWorked() {
+        assertEquals("initialValue", mStorage.readKeyValue("initializedKey", "default", 0));
+        mStorage.clearCache();
+        assertEquals("initialValue", mStorage.readKeyValue("initializedKey", "default", 0));
+    }
+
+    public void testKeyValue_WriteThenRead() {
+        mStorage.writeKeyValue("key", "value", 0);
+        assertEquals("value", mStorage.readKeyValue("key", "default", 0));
+        mStorage.clearCache();
+        assertEquals("value", mStorage.readKeyValue("key", "default", 0));
+    }
+
+    public void testKeyValue_DefaultValue() {
+        assertEquals("default", mStorage.readKeyValue("unititialized key", "default", 0));
+        assertEquals("default2", mStorage.readKeyValue("unititialized key", "default2", 0));
+    }
+
+    public void testKeyValue_Concurrency() {
+        final Object monitor = new Object();
+        List<Thread> threads = new ArrayList<>();
+        for (int i = 0; i < 100; i++) {
+            final int threadId = i;
+            threads.add(new Thread() {
+                @Override
+                public void run() {
+                    synchronized (monitor) {
+                        try {
+                            monitor.wait();
+                        } catch (InterruptedException e) {
+                            return;
+                        }
+                        mStorage.writeKeyValue("key", "1 from thread " + threadId, 0);
+                        mStorage.readKeyValue("key", "default", 0);
+                        mStorage.writeKeyValue("key", "2 from thread " + threadId, 0);
+                        mStorage.readKeyValue("key", "default", 0);
+                        mStorage.writeKeyValue("key", "3 from thread " + threadId, 0);
+                        mStorage.readKeyValue("key", "default", 0);
+                        mStorage.writeKeyValue("key", "4 from thread " + threadId, 0);
+                        mStorage.readKeyValue("key", "default", 0);
+                        mStorage.writeKeyValue("key", "5 from thread " + threadId, 0);
+                        mStorage.readKeyValue("key", "default", 0);
+                    }
+                }
+            });
+            threads.get(i).start();
+        }
+        mStorage.writeKeyValue("key", "initalValue", 0);
+        synchronized (monitor) {
+            monitor.notifyAll();
+        }
+        for (int i = 0; i < threads.size(); i++) {
+            try {
+                threads.get(i).join();
+            } catch (InterruptedException e) {
+            }
+        }
+        assertEquals('5', mStorage.readKeyValue("key", "default", 0).charAt(0));
+        mStorage.clearCache();
+        assertEquals('5', mStorage.readKeyValue("key", "default", 0).charAt(0));
+    }
+
+    public void testKeyValue_CacheStarvedWriter() {
+        final CountDownLatch latch = new CountDownLatch(1);
+        List<Thread> threads = new ArrayList<>();
+        for (int i = 0; i < 100; i++) {
+            final int threadId = i;
+            threads.add(new Thread() {
+                @Override
+                public void run() {
+                    try {
+                        latch.await();
+                    } catch (InterruptedException e) {
+                        return;
+                    }
+                    if (threadId == 50) {
+                        mStorage.writeKeyValue("starvedWriterKey", "value", 0);
+                    } else {
+                        mStorage.readKeyValue("starvedWriterKey", "default", 0);
+                    }
+                }
+            });
+            threads.get(i).start();
+        }
+        latch.countDown();
+        for (int i = 0; i < threads.size(); i++) {
+            try {
+                threads.get(i).join();
+            } catch (InterruptedException e) {
+            }
+        }
+        String cached = mStorage.readKeyValue("key", "default", 0);
+        mStorage.clearCache();
+        String storage = mStorage.readKeyValue("key", "default", 0);
+        assertEquals("Cached value didn't match stored value", storage, cached);
+    }
+
+    public void testRemoveUser() {
+        mStorage.writeKeyValue("key", "value", 0);
+        mStorage.writePasswordHash(new byte[]{1}, 0);
+        mStorage.writePatternHash(new byte[]{2}, 0);
+
+        mStorage.writeKeyValue("key", "value", 1);
+        mStorage.writePasswordHash(new byte[]{1}, 1);
+        mStorage.writePatternHash(new byte[]{2}, 1);
+
+        mStorage.removeUser(0);
+
+        assertEquals("value", mStorage.readKeyValue("key", "default", 1));
+        assertEquals("default", mStorage.readKeyValue("key", "default", 0));
+        assertNotNull(mStorage.readPasswordHash(1));
+        assertNull(mStorage.readPasswordHash(0));
+        assertNotNull(mStorage.readPatternHash(1));
+        assertNull(mStorage.readPatternHash(0));
+    }
+
+    public void testPassword_Default() {
+        assertNull(mStorage.readPasswordHash(0));
+    }
+
+    public void testPassword_Write() {
+        mStorage.writePasswordHash("thepassword".getBytes(), 0);
+
+        assertArrayEquals("thepassword".getBytes(), mStorage.readPasswordHash(0));
+        mStorage.clearCache();
+        assertArrayEquals("thepassword".getBytes(), mStorage.readPasswordHash(0));
+    }
+
+    public void testPassword_WriteProfileWritesParent() {
+        mStorage.writePasswordHash("parentpasswordd".getBytes(), 1);
+        mStorage.writePasswordHash("profilepassword".getBytes(), 2);
+
+        assertArrayEquals("profilepassword".getBytes(), mStorage.readPasswordHash(1));
+        assertArrayEquals("profilepassword".getBytes(), mStorage.readPasswordHash(2));
+        mStorage.clearCache();
+        assertArrayEquals("profilepassword".getBytes(), mStorage.readPasswordHash(1));
+        assertArrayEquals("profilepassword".getBytes(), mStorage.readPasswordHash(2));
+    }
+
+    public void testPassword_WriteParentWritesProfile() {
+        mStorage.writePasswordHash("profilepassword".getBytes(), 2);
+        mStorage.writePasswordHash("parentpasswordd".getBytes(), 1);
+
+        assertArrayEquals("parentpasswordd".getBytes(), mStorage.readPasswordHash(1));
+        assertArrayEquals("parentpasswordd".getBytes(), mStorage.readPasswordHash(2));
+        mStorage.clearCache();
+        assertArrayEquals("parentpasswordd".getBytes(), mStorage.readPasswordHash(1));
+        assertArrayEquals("parentpasswordd".getBytes(), mStorage.readPasswordHash(2));
+    }
+
+    public void testPattern_Default() {
+        assertNull(mStorage.readPasswordHash(0));
+    }
+
+    public void testPattern_Write() {
+        mStorage.writePatternHash("thepattern".getBytes(), 0);
+
+        assertArrayEquals("thepattern".getBytes(), mStorage.readPatternHash(0));
+        mStorage.clearCache();
+        assertArrayEquals("thepattern".getBytes(), mStorage.readPatternHash(0));
+    }
+
+    public void testPattern_WriteProfileWritesParent() {
+        mStorage.writePatternHash("parentpatternn".getBytes(), 1);
+        mStorage.writePatternHash("profilepattern".getBytes(), 2);
+
+        assertArrayEquals("profilepattern".getBytes(), mStorage.readPatternHash(1));
+        assertArrayEquals("profilepattern".getBytes(), mStorage.readPatternHash(2));
+        mStorage.clearCache();
+        assertArrayEquals("profilepattern".getBytes(), mStorage.readPatternHash(1));
+        assertArrayEquals("profilepattern".getBytes(), mStorage.readPatternHash(2));
+    }
+
+    public void testPattern_WriteParentWritesProfile() {
+        mStorage.writePatternHash("profilepattern".getBytes(), 2);
+        mStorage.writePatternHash("parentpatternn".getBytes(), 1);
+
+        assertArrayEquals("parentpatternn".getBytes(), mStorage.readPatternHash(1));
+        assertArrayEquals("parentpatternn".getBytes(), mStorage.readPatternHash(2));
+        mStorage.clearCache();
+        assertArrayEquals("parentpatternn".getBytes(), mStorage.readPatternHash(1));
+        assertArrayEquals("parentpatternn".getBytes(), mStorage.readPatternHash(2));
+    }
+
+    public void testPrefetch() {
+        mStorage.writeKeyValue("key", "toBeFetched", 0);
+        mStorage.writePatternHash("pattern".getBytes(), 0);
+        mStorage.writePasswordHash("password".getBytes(), 0);
+
+        mStorage.clearCache();
+        mStorage.prefetchUser(0);
+
+        assertEquals("toBeFetched", mStorage.readKeyValue("key", "default", 0));
+        assertArrayEquals("pattern".getBytes(), mStorage.readPatternHash(0));
+        assertArrayEquals("password".getBytes(), mStorage.readPasswordHash(0));
+    }
+
+    public void testFileLocation_Owner() {
+        LockSettingsStorage storage = new LockSettingsStorage(getContext(), null);
+
+        assertEquals("/data/system/gesture.key", storage.getLockPatternFilename(0));
+        assertEquals("/data/system/password.key", storage.getLockPasswordFilename(0));
+    }
+
+    public void testFileLocation_SecondaryUser() {
+        LockSettingsStorage storage = new LockSettingsStorage(getContext(), null);
+
+        assertEquals("/data/system/users/1/gesture.key", storage.getLockPatternFilename(1));
+        assertEquals("/data/system/users/1/password.key", storage.getLockPasswordFilename(1));
+    }
+
+    public void testFileLocation_ProfileToSecondary() {
+        LockSettingsStorage storage = new LockSettingsStorage(getContext(), null);
+
+        assertEquals("/data/system/users/1/gesture.key", storage.getLockPatternFilename(2));
+        assertEquals("/data/system/users/1/password.key", storage.getLockPasswordFilename(2));
+    }
+
+    public void testFileLocation_ProfileToOwner() {
+        LockSettingsStorage storage = new LockSettingsStorage(getContext(), null);
+
+        assertEquals("/data/system/gesture.key", storage.getLockPatternFilename(3));
+        assertEquals("/data/system/password.key", storage.getLockPasswordFilename(3));
+    }
+
+    private static void assertArrayEquals(byte[] expected, byte[] actual) {
+        if (!Arrays.equals(expected, actual)) {
+            fail("expected:<" + Arrays.toString(expected) +
+                    "> but was:<" + Arrays.toString(actual) + ">");
+        }
+    }
+}