[Android backup] Restore nothing if signed in user isn't valid

chrome/android/junit/src/org/chromium/chrome/browser/ChromeBackupAgentTest.java

Index: chrome/android/junit/src/org/chromium/chrome/browser/ChromeBackupAgentTest.java
diff --git a/chrome/android/junit/src/org/chromium/chrome/browser/ChromeBackupAgentTest.java b/chrome/android/junit/src/org/chromium/chrome/browser/ChromeBackupAgentTest.java
index 20e1cb013f532fcd83b582f6498eed5792d52d2d..2afb449c9943889056b23745bb30217e09be09fd 100644
--- a/chrome/android/junit/src/org/chromium/chrome/browser/ChromeBackupAgentTest.java
+++ b/chrome/android/junit/src/org/chromium/chrome/browser/ChromeBackupAgentTest.java
@@ -8,6 +8,9 @@ import static org.hamcrest.CoreMatchers.equalTo;
 import static org.hamcrest.CoreMatchers.nullValue;
 import static org.junit.Assert.assertThat;
 
+import android.accounts.Account;
+import android.accounts.AccountManager;
+import android.content.Context;
 import android.content.SharedPreferences;
 import android.preference.PreferenceManager;
 
@@ -32,6 +35,15 @@ public class ChromeBackupAgentTest {
         }
     }
 
+    @Before
+    public void setUp() throws Exception {
+        ContextUtils.initApplicationContextForTests(Robolectric.application);
+        AccountManager manager =
+                (AccountManager) Robolectric.application.getSystemService(Context.ACCOUNT_SERVICE);
+        manager.addAccountExplicitly(new Account("user1", "dummy"), null, null);
+        manager.addAccountExplicitly(new Account("user2", "dummy"), null, null);
+    }
+
     @Test
     public void testOnRestoreFinished() {
         SharedPreferences sharedPrefs =
@@ -53,4 +65,40 @@ public class ChromeBackupAgentTest {
         assertThat(sharedPrefs.getString("first_run_signin_account_name", null), equalTo("user1"));
     }
 
+    @Test
+    public void testOnRestoreFinishedNoUser() {
+        SharedPreferences sharedPrefs =
+                PreferenceManager.getDefaultSharedPreferences(Robolectric.application);
+        SharedPreferences.Editor editor = sharedPrefs.edit();
+        editor.putBoolean("crash_dump_upload", false);
+        editor.putString("junk", "junk");
+        editor.commit();
+
+        new ChromeTestBackupAgent().onRestoreFinished();
+
+        // Check that we haven't restored any preferences
+        assertThat(sharedPrefs.getBoolean("crash_dump_upload", true), equalTo(true));
+        assertThat(sharedPrefs.getString("google.services.username", null), nullValue());
+        assertThat(sharedPrefs.getString("junk", null), nullValue());
+        assertThat(sharedPrefs.getString("first_run_signin_account_name", null), nullValue());
+    }
+
+    @Test
+    public void testOnRestoreFinishedWrongUser() {
+        SharedPreferences sharedPrefs =
+                PreferenceManager.getDefaultSharedPreferences(Robolectric.application);
+        SharedPreferences.Editor editor = sharedPrefs.edit();
+        editor.putBoolean("crash_dump_upload", false);
+        editor.putString("google.services.username", "wrong_user");
+        editor.putString("junk", "junk");
+        editor.commit();
+
+        new ChromeTestBackupAgent().onRestoreFinished();
+
+        // Check that we haven't restored any preferences
+        assertThat(sharedPrefs.getBoolean("crash_dump_upload", true), equalTo(true));
+        assertThat(sharedPrefs.getString("google.services.username", null), nullValue());
+        assertThat(sharedPrefs.getString("junk", null), nullValue());
+        assertThat(sharedPrefs.getString("first_run_signin_account_name", null), nullValue());
+    }
 }