diff -r 000000000000 -r 6474c204b198 mobile/android/tests/background/junit3/src/helpers/DBHelpers.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mobile/android/tests/background/junit3/src/helpers/DBHelpers.java	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,84 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+package org.mozilla.gecko.background.helpers;
+
+import android.database.Cursor;
+import android.database.sqlite.SQLiteDatabase;
+import junit.framework.Assert;
+
+public class DBHelpers {
+
+  /*
+   * Works for strings and int-ish values.
+   */
+  public static void assertCursorContains(Object[][] expected, Cursor actual) {
+    Assert.assertEquals(expected.length, actual.getCount());
+    int i = 0, j = 0;
+    Object[] row;
+
+    do {
+      row = expected[i];
+      for (j = 0; j < row.length; ++j) {
+        Object atIndex = row[j];
+        if (atIndex == null) {
+          continue;
+        }
+        if (atIndex instanceof String) {
+          Assert.assertEquals(atIndex, actual.getString(j));
+        } else {
+          Assert.assertEquals(atIndex, actual.getInt(j));
+        }
+      }
+      ++i;
+    } while (actual.moveToPosition(i));
+  }
+
+  public static int getRowCount(SQLiteDatabase db, String table) {
+    return getRowCount(db, table, null, null);
+  }
+
+  public static int getRowCount(SQLiteDatabase db, String table, String selection, String[] selectionArgs) {
+    final Cursor c = db.query(table, null, selection, selectionArgs, null, null, null);
+    try {
+      return c.getCount();
+    } finally {
+      c.close();
+    }
+  }
+
+  /**
+   * Returns an ID that is non-existent in the given sqlite table. Assumes that a column named
+   * "id" exists.
+   */
+  public static int getNonExistentID(SQLiteDatabase db, String table) {
+    // XXX: We should use selectionArgs to concatenate table, but sqlite throws a syntax error on
+    // "?" because it wants to ensure id is a valid column in table.
+    final Cursor c = db.rawQuery("SELECT MAX(id) + 1 FROM " + table, null);
+    try {
+      if (!c.moveToNext()) {
+        return 0;
+      }
+      return c.getInt(0);
+    } finally {
+      c.close();
+    }
+  }
+
+  /**
+   * Returns an ID that exists in the given sqlite table. Assumes that a column named * "id"
+   * exists.
+   */
+  public static long getExistentID(SQLiteDatabase db, String table) {
+    final Cursor c = db.query(table, new String[] {"id"}, null, null, null, null, null, "1");
+    try {
+      if (!c.moveToNext()) {
+        throw new IllegalStateException("Given table does not contain any entries.");
+      }
+      return c.getInt(0);
+    } finally {
+      c.close();
+    }
+  }
+
+}