[test] toxify tests

- move tests to root directory
- split tests in different subdirectories
- setup a small package with common test dependencies in /testing/test_soledad
- add tox.ini that will:
  - install the test_soledad package and other test dependencies
  - install soledad common, client, server from the repository
  - run tests contianed in /testing/tests directory using pytest

This commit also removes all oauth code from tests, as we have removed the
u1db dependency (by importing it into the repo and naming it l2db) and don't
neet oauth at all right now.

1 files changed, 705 insertions, 0 deletions

diff --git a/testing/tests/client/test_sqlcipher.py b/testing/tests/client/test_sqlcipher.py
new file mode 100644
index 00000000..11472d46
--- /dev/null
+++ b/testing/tests/client/test_sqlcipher.py
@@ -0,0 +1,705 @@
+# -*- coding: utf-8 -*-
+# test_sqlcipher.py
+# Copyright (C) 2013 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+"""
+Test sqlcipher backend internals.
+"""
+import os
+import time
+import threading
+import tempfile
+import shutil
+
+from pysqlcipher import dbapi2
+from testscenarios import TestWithScenarios
+
+# l2db stuff.
+from leap.soledad.common.l2db import errors
+from leap.soledad.common.l2db import query_parser
+from leap.soledad.common.l2db.backends.sqlite_backend \
+    import SQLitePartialExpandDatabase
+
+# soledad stuff.
+from leap.soledad.common import soledad_assert
+from leap.soledad.common.document import SoledadDocument
+from leap.soledad.client.sqlcipher import SQLCipherDatabase
+from leap.soledad.client.sqlcipher import SQLCipherOptions
+from leap.soledad.client.sqlcipher import DatabaseIsNotEncrypted
+
+# u1db tests stuff.
+from test_soledad import u1db_tests as tests
+from test_soledad.u1db_tests import test_backends
+from test_soledad.u1db_tests import test_open
+from test_soledad.util import SQLCIPHER_SCENARIOS
+from test_soledad.util import PASSWORD
+from test_soledad.util import BaseSoledadTest
+
+
+def sqlcipher_open(path, passphrase, create=True, document_factory=None):
+    return SQLCipherDatabase(
+        SQLCipherOptions(path, passphrase, create=create))
+
+
+# -----------------------------------------------------------------------------
+# The following tests come from `u1db.tests.test_common_backend`.
+# -----------------------------------------------------------------------------
+
+class TestSQLCipherBackendImpl(tests.TestCase):
+
+    def test__allocate_doc_id(self):
+        db = sqlcipher_open(':memory:', PASSWORD)
+        doc_id1 = db._allocate_doc_id()
+        self.assertTrue(doc_id1.startswith('D-'))
+        self.assertEqual(34, len(doc_id1))
+        int(doc_id1[len('D-'):], 16)
+        self.assertNotEqual(doc_id1, db._allocate_doc_id())
+        db.close()
+
+
+# -----------------------------------------------------------------------------
+# The following tests come from `u1db.tests.test_backends`.
+# -----------------------------------------------------------------------------
+
+class SQLCipherTests(TestWithScenarios, test_backends.AllDatabaseTests):
+    scenarios = SQLCIPHER_SCENARIOS
+
+
+class SQLCipherDatabaseTests(TestWithScenarios,
+                             test_backends.LocalDatabaseTests):
+    scenarios = SQLCIPHER_SCENARIOS
+
+
+class SQLCipherValidateGenNTransIdTests(
+        TestWithScenarios,
+        test_backends.LocalDatabaseValidateGenNTransIdTests):
+    scenarios = SQLCIPHER_SCENARIOS
+
+
+class SQLCipherValidateSourceGenTests(
+        TestWithScenarios,
+        test_backends.LocalDatabaseValidateSourceGenTests):
+    scenarios = SQLCIPHER_SCENARIOS
+
+
+class SQLCipherWithConflictsTests(
+        TestWithScenarios,
+        test_backends.LocalDatabaseWithConflictsTests):
+    scenarios = SQLCIPHER_SCENARIOS
+
+
+class SQLCipherIndexTests(
+        TestWithScenarios, test_backends.DatabaseIndexTests):
+    scenarios = SQLCIPHER_SCENARIOS
+
+
+# -----------------------------------------------------------------------------
+# The following tests come from `u1db.tests.test_sqlite_backend`.
+# -----------------------------------------------------------------------------
+
+class TestSQLCipherDatabase(tests.TestCase):
+    """
+    Tests from u1db.tests.test_sqlite_backend.TestSQLiteDatabase.
+    """
+
+    def test_atomic_initialize(self):
+        # This test was modified to ensure that db2.close() is called within
+        # the thread that created the database.
+        tmpdir = self.createTempDir()
+        dbname = os.path.join(tmpdir, 'atomic.db')
+
+        t2 = None  # will be a thread
+
+        class SQLCipherDatabaseTesting(SQLCipherDatabase):
+            _index_storage_value = "testing"
+
+            def __init__(self, dbname, ntry):
+                self._try = ntry
+                self._is_initialized_invocations = 0
+                SQLCipherDatabase.__init__(
+                    self,
+                    SQLCipherOptions(dbname, PASSWORD))
+
+            def _is_initialized(self, c):
+                res = \
+                    SQLCipherDatabase._is_initialized(self, c)
+                if self._try == 1:
+                    self._is_initialized_invocations += 1
+                    if self._is_initialized_invocations == 2:
+                        t2.start()
+                        # hard to do better and have a generic test
+                        time.sleep(0.05)
+                return res
+
+        class SecondTry(threading.Thread):
+
+            outcome2 = []
+
+            def run(self):
+                try:
+                    db2 = SQLCipherDatabaseTesting(dbname, 2)
+                except Exception, e:
+                    SecondTry.outcome2.append(e)
+                else:
+                    SecondTry.outcome2.append(db2)
+
+        t2 = SecondTry()
+        db1 = SQLCipherDatabaseTesting(dbname, 1)
+        t2.join()
+
+        self.assertIsInstance(SecondTry.outcome2[0], SQLCipherDatabaseTesting)
+        self.assertTrue(db1._is_initialized(db1._get_sqlite_handle().cursor()))
+        db1.close()
+
+
+class TestSQLCipherPartialExpandDatabase(tests.TestCase):
+    """
+    Tests from u1db.tests.test_sqlite_backend.TestSQLitePartialExpandDatabase.
+    """
+
+    # The following tests had to be cloned from u1db because they all
+    # instantiate the backend directly, so we need to change that in order to
+    # our backend be instantiated in place.
+
+    def setUp(self):
+        self.db = sqlcipher_open(':memory:', PASSWORD)
+
+    def tearDown(self):
+        self.db.close()
+
+    def test_default_replica_uid(self):
+        self.assertIsNot(None, self.db._replica_uid)
+        self.assertEqual(32, len(self.db._replica_uid))
+        int(self.db._replica_uid, 16)
+
+    def test__parse_index(self):
+        g = self.db._parse_index_definition('fieldname')
+        self.assertIsInstance(g, query_parser.ExtractField)
+        self.assertEqual(['fieldname'], g.field)
+
+    def test__update_indexes(self):
+        g = self.db._parse_index_definition('fieldname')
+        c = self.db._get_sqlite_handle().cursor()
+        self.db._update_indexes('doc-id', {'fieldname': 'val'},
+                                [('fieldname', g)], c)
+        c.execute('SELECT doc_id, field_name, value FROM document_fields')
+        self.assertEqual([('doc-id', 'fieldname', 'val')],
+                         c.fetchall())
+
+    def test_create_database(self):
+        raw_db = self.db._get_sqlite_handle()
+        self.assertNotEqual(None, raw_db)
+
+    def test__set_replica_uid(self):
+        # Start from scratch, so that replica_uid isn't set.
+        self.assertIsNot(None, self.db._real_replica_uid)
+        self.assertIsNot(None, self.db._replica_uid)
+        self.db._set_replica_uid('foo')
+        c = self.db._get_sqlite_handle().cursor()
+        c.execute("SELECT value FROM u1db_config WHERE name='replica_uid'")
+        self.assertEqual(('foo',), c.fetchone())
+        self.assertEqual('foo', self.db._real_replica_uid)
+        self.assertEqual('foo', self.db._replica_uid)
+        self.db._close_sqlite_handle()
+        self.assertEqual('foo', self.db._replica_uid)
+
+    def test__open_database(self):
+        # SQLCipherDatabase has no _open_database() method, so we just pass
+        # (and test for the same funcionality on test_open_database_existing()
+        # below).
+        pass
+
+    def test__open_database_with_factory(self):
+        # SQLCipherDatabase has no _open_database() method.
+        pass
+
+    def test__open_database_non_existent(self):
+        temp_dir = self.createTempDir(prefix='u1db-test-')
+        path = temp_dir + '/non-existent.sqlite'
+        self.assertRaises(errors.DatabaseDoesNotExist,
+                          sqlcipher_open,
+                          path, PASSWORD, create=False)
+
+    def test__open_database_during_init(self):
+        # The purpose of this test is to ensure that _open_database() parallel
+        # db initialization behaviour is correct. As SQLCipherDatabase does
+        # not have an _open_database() method, we just do not implement this
+        # test.
+        pass
+
+    def test__open_database_invalid(self):
+        # This test was modified to ensure that an empty database file will
+        # raise a DatabaseIsNotEncrypted exception instead of a
+        # dbapi2.OperationalError exception.
+        temp_dir = self.createTempDir(prefix='u1db-test-')
+        path1 = temp_dir + '/invalid1.db'
+        with open(path1, 'wb') as f:
+            f.write("")
+        self.assertRaises(DatabaseIsNotEncrypted,
+                          sqlcipher_open, path1,
+                          PASSWORD)
+        with open(path1, 'wb') as f:
+            f.write("invalid")
+        self.assertRaises(dbapi2.DatabaseError,
+                          sqlcipher_open, path1,
+                          PASSWORD)
+
+    def test_open_database_existing(self):
+        # In the context of SQLCipherDatabase, where no _open_database()
+        # method exists and thus there's no call to _which_index_storage(),
+        # this test tests for the same functionality as
+        # test_open_database_create() below. So, we just pass.
+        pass
+
+    def test_open_database_with_factory(self):
+        # SQLCipherDatabase's constructor has no factory parameter.
+        pass
+
+    def test_open_database_create(self):
+        # SQLCipherDatabas has no open_database() method, so we just test for
+        # the actual database constructor effects.
+        temp_dir = self.createTempDir(prefix='u1db-test-')
+        path = temp_dir + '/new.sqlite'
+        db1 = sqlcipher_open(path, PASSWORD, create=True)
+        db2 = sqlcipher_open(path, PASSWORD, create=False)
+        self.assertIsInstance(db2, SQLCipherDatabase)
+        db1.close()
+        db2.close()
+
+    def test_create_database_initializes_schema(self):
+        # This test had to be cloned because our implementation of SQLCipher
+        # backend is referenced with an index_storage_value that includes the
+        # word "encrypted". See u1db's sqlite_backend and our
+        # sqlcipher_backend for reference.
+        raw_db = self.db._get_sqlite_handle()
+        c = raw_db.cursor()
+        c.execute("SELECT * FROM u1db_config")
+        config = dict([(r[0], r[1]) for r in c.fetchall()])
+        replica_uid = self.db._replica_uid
+        self.assertEqual({'sql_schema': '0', 'replica_uid': replica_uid,
+                          'index_storage': 'expand referenced encrypted'},
+                         config)
+
+    def test_store_syncable(self):
+        doc = self.db.create_doc_from_json(tests.simple_doc)
+        # assert that docs are syncable by default
+        self.assertEqual(True, doc.syncable)
+        # assert that we can store syncable = False
+        doc.syncable = False
+        self.db.put_doc(doc)
+        self.assertEqual(False, self.db.get_doc(doc.doc_id).syncable)
+        # assert that we can store syncable = True
+        doc.syncable = True
+        self.db.put_doc(doc)
+        self.assertEqual(True, self.db.get_doc(doc.doc_id).syncable)
+
+    def test__close_sqlite_handle(self):
+        raw_db = self.db._get_sqlite_handle()
+        self.db._close_sqlite_handle()
+        self.assertRaises(dbapi2.ProgrammingError,
+                          raw_db.cursor)
+
+    def test__get_generation(self):
+        self.assertEqual(0, self.db._get_generation())
+
+    def test__get_generation_info(self):
+        self.assertEqual((0, ''), self.db._get_generation_info())
+
+    def test_create_index(self):
+        self.db.create_index('test-idx', "key")
+        self.assertEqual([('test-idx', ["key"])], self.db.list_indexes())
+
+    def test_create_index_multiple_fields(self):
+        self.db.create_index('test-idx', "key", "key2")
+        self.assertEqual([('test-idx', ["key", "key2"])],
+                         self.db.list_indexes())
+
+    def test__get_index_definition(self):
+        self.db.create_index('test-idx', "key", "key2")
+        # TODO: How would you test that an index is getting used for an SQL
+        #       request?
+        self.assertEqual(["key", "key2"],
+                         self.db._get_index_definition('test-idx'))
+
+    def test_list_index_mixed(self):
+        # Make sure that we properly order the output
+        c = self.db._get_sqlite_handle().cursor()
+        # We intentionally insert the data in weird ordering, to make sure the
+        # query still gets it back correctly.
+        c.executemany("INSERT INTO index_definitions VALUES (?, ?, ?)",
+                      [('idx-1', 0, 'key10'),
+                       ('idx-2', 2, 'key22'),
+                       ('idx-1', 1, 'key11'),
+                       ('idx-2', 0, 'key20'),
+                       ('idx-2', 1, 'key21')])
+        self.assertEqual([('idx-1', ['key10', 'key11']),
+                          ('idx-2', ['key20', 'key21', 'key22'])],
+                         self.db.list_indexes())
+
+    def test_no_indexes_no_document_fields(self):
+        self.db.create_doc_from_json(
+            '{"key1": "val1", "key2": "val2"}')
+        c = self.db._get_sqlite_handle().cursor()
+        c.execute("SELECT doc_id, field_name, value FROM document_fields"
+                  " ORDER BY doc_id, field_name, value")
+        self.assertEqual([], c.fetchall())
+
+    def test_create_extracts_fields(self):
+        doc1 = self.db.create_doc_from_json('{"key1": "val1", "key2": "val2"}')
+        doc2 = self.db.create_doc_from_json('{"key1": "valx", "key2": "valy"}')
+        c = self.db._get_sqlite_handle().cursor()
+        c.execute("SELECT doc_id, field_name, value FROM document_fields"
+                  " ORDER BY doc_id, field_name, value")
+        self.assertEqual([], c.fetchall())
+        self.db.create_index('test', 'key1', 'key2')
+        c.execute("SELECT doc_id, field_name, value FROM document_fields"
+                  " ORDER BY doc_id, field_name, value")
+        self.assertEqual(sorted(
+            [(doc1.doc_id, "key1", "val1"),
+             (doc1.doc_id, "key2", "val2"),
+             (doc2.doc_id, "key1", "valx"),
+             (doc2.doc_id, "key2", "valy"), ]), sorted(c.fetchall()))
+
+    def test_put_updates_fields(self):
+        self.db.create_index('test', 'key1', 'key2')
+        doc1 = self.db.create_doc_from_json(
+            '{"key1": "val1", "key2": "val2"}')
+        doc1.content = {"key1": "val1", "key2": "valy"}
+        self.db.put_doc(doc1)
+        c = self.db._get_sqlite_handle().cursor()
+        c.execute("SELECT doc_id, field_name, value FROM document_fields"
+                  " ORDER BY doc_id, field_name, value")
+        self.assertEqual([(doc1.doc_id, "key1", "val1"),
+                          (doc1.doc_id, "key2", "valy"), ], c.fetchall())
+
+    def test_put_updates_nested_fields(self):
+        self.db.create_index('test', 'key', 'sub.doc')
+        doc1 = self.db.create_doc_from_json(tests.nested_doc)
+        c = self.db._get_sqlite_handle().cursor()
+        c.execute("SELECT doc_id, field_name, value FROM document_fields"
+                  " ORDER BY doc_id, field_name, value")
+        self.assertEqual([(doc1.doc_id, "key", "value"),
+                          (doc1.doc_id, "sub.doc", "underneath"), ],
+                         c.fetchall())
+
+    def test__ensure_schema_rollback(self):
+        temp_dir = self.createTempDir(prefix='u1db-test-')
+        path = temp_dir + '/rollback.db'
+
+        class SQLitePartialExpandDbTesting(SQLCipherDatabase):
+
+            def _set_replica_uid_in_transaction(self, uid):
+                super(SQLitePartialExpandDbTesting,
+                      self)._set_replica_uid_in_transaction(uid)
+                if fail:
+                    raise Exception()
+
+        db = SQLitePartialExpandDbTesting.__new__(SQLitePartialExpandDbTesting)
+        db._db_handle = dbapi2.connect(path)  # db is there but not yet init-ed
+        fail = True
+        self.assertRaises(Exception, db._ensure_schema)
+        fail = False
+        db._initialize(db._db_handle.cursor())
+
+    def test_open_database_non_existent(self):
+        temp_dir = self.createTempDir(prefix='u1db-test-')
+        path = temp_dir + '/non-existent.sqlite'
+        self.assertRaises(errors.DatabaseDoesNotExist,
+                          sqlcipher_open, path, "123",
+                          create=False)
+
+    def test_delete_database_existent(self):
+        temp_dir = self.createTempDir(prefix='u1db-test-')
+        path = temp_dir + '/new.sqlite'
+        db = sqlcipher_open(path, "123", create=True)
+        db.close()
+        SQLCipherDatabase.delete_database(path)
+        self.assertRaises(errors.DatabaseDoesNotExist,
+                          sqlcipher_open, path, "123",
+                          create=False)
+
+    def test_delete_database_nonexistent(self):
+        temp_dir = self.createTempDir(prefix='u1db-test-')
+        path = temp_dir + '/non-existent.sqlite'
+        self.assertRaises(errors.DatabaseDoesNotExist,
+                          SQLCipherDatabase.delete_database, path)
+
+    def test__get_indexed_fields(self):
+        self.db.create_index('idx1', 'a', 'b')
+        self.assertEqual(set(['a', 'b']), self.db._get_indexed_fields())
+        self.db.create_index('idx2', 'b', 'c')
+        self.assertEqual(set(['a', 'b', 'c']), self.db._get_indexed_fields())
+
+    def test_indexed_fields_expanded(self):
+        self.db.create_index('idx1', 'key1')
+        doc1 = self.db.create_doc_from_json('{"key1": "val1", "key2": "val2"}')
+        self.assertEqual(set(['key1']), self.db._get_indexed_fields())
+        c = self.db._get_sqlite_handle().cursor()
+        c.execute("SELECT doc_id, field_name, value FROM document_fields"
+                  " ORDER BY doc_id, field_name, value")
+        self.assertEqual([(doc1.doc_id, 'key1', 'val1')], c.fetchall())
+
+    def test_create_index_updates_fields(self):
+        doc1 = self.db.create_doc_from_json('{"key1": "val1", "key2": "val2"}')
+        self.db.create_index('idx1', 'key1')
+        self.assertEqual(set(['key1']), self.db._get_indexed_fields())
+        c = self.db._get_sqlite_handle().cursor()
+        c.execute("SELECT doc_id, field_name, value FROM document_fields"
+                  " ORDER BY doc_id, field_name, value")
+        self.assertEqual([(doc1.doc_id, 'key1', 'val1')], c.fetchall())
+
+    def assertFormatQueryEquals(self, exp_statement, exp_args, definition,
+                                values):
+        statement, args = self.db._format_query(definition, values)
+        self.assertEqual(exp_statement, statement)
+        self.assertEqual(exp_args, args)
+
+    def test__format_query(self):
+        self.assertFormatQueryEquals(
+            "SELECT d.doc_id, d.doc_rev, d.content, count(c.doc_rev) FROM "
+            "document d, document_fields d0 LEFT OUTER JOIN conflicts c ON "
+            "c.doc_id = d.doc_id WHERE d.doc_id = d0.doc_id AND d0.field_name "
+            "= ? AND d0.value = ? GROUP BY d.doc_id, d.doc_rev, d.content "
+            "ORDER BY d0.value;", ["key1", "a"],
+            ["key1"], ["a"])
+
+    def test__format_query2(self):
+        self.assertFormatQueryEquals(
+            'SELECT d.doc_id, d.doc_rev, d.content, count(c.doc_rev) FROM '
+            'document d, document_fields d0, document_fields d1, '
+            'document_fields d2 LEFT OUTER JOIN conflicts c ON c.doc_id = '
+            'd.doc_id WHERE d.doc_id = d0.doc_id AND d0.field_name = ? AND '
+            'd0.value = ? AND d.doc_id = d1.doc_id AND d1.field_name = ? AND '
+            'd1.value = ? AND d.doc_id = d2.doc_id AND d2.field_name = ? AND '
+            'd2.value = ? GROUP BY d.doc_id, d.doc_rev, d.content ORDER BY '
+            'd0.value, d1.value, d2.value;',
+            ["key1", "a", "key2", "b", "key3", "c"],
+            ["key1", "key2", "key3"], ["a", "b", "c"])
+
+    def test__format_query_wildcard(self):
+        self.assertFormatQueryEquals(
+            'SELECT d.doc_id, d.doc_rev, d.content, count(c.doc_rev) FROM '
+            'document d, document_fields d0, document_fields d1, '
+            'document_fields d2 LEFT OUTER JOIN conflicts c ON c.doc_id = '
+            'd.doc_id WHERE d.doc_id = d0.doc_id AND d0.field_name = ? AND '
+            'd0.value = ? AND d.doc_id = d1.doc_id AND d1.field_name = ? AND '
+            'd1.value GLOB ? AND d.doc_id = d2.doc_id AND d2.field_name = ? '
+            'AND d2.value NOT NULL GROUP BY d.doc_id, d.doc_rev, d.content '
+            'ORDER BY d0.value, d1.value, d2.value;',
+            ["key1", "a", "key2", "b*", "key3"], ["key1", "key2", "key3"],
+            ["a", "b*", "*"])
+
+    def assertFormatRangeQueryEquals(self, exp_statement, exp_args, definition,
+                                     start_value, end_value):
+        statement, args = self.db._format_range_query(
+            definition, start_value, end_value)
+        self.assertEqual(exp_statement, statement)
+        self.assertEqual(exp_args, args)
+
+    def test__format_range_query(self):
+        self.assertFormatRangeQueryEquals(
+            'SELECT d.doc_id, d.doc_rev, d.content, count(c.doc_rev) FROM '
+            'document d, document_fields d0, document_fields d1, '
+            'document_fields d2 LEFT OUTER JOIN conflicts c ON c.doc_id = '
+            'd.doc_id WHERE d.doc_id = d0.doc_id AND d0.field_name = ? AND '
+            'd0.value >= ? AND d.doc_id = d1.doc_id AND d1.field_name = ? AND '
+            'd1.value >= ? AND d.doc_id = d2.doc_id AND d2.field_name = ? AND '
+            'd2.value >= ? AND d.doc_id = d0.doc_id AND d0.field_name = ? AND '
+            'd0.value <= ? AND d.doc_id = d1.doc_id AND d1.field_name = ? AND '
+            'd1.value <= ? AND d.doc_id = d2.doc_id AND d2.field_name = ? AND '
+            'd2.value <= ? GROUP BY d.doc_id, d.doc_rev, d.content ORDER BY '
+            'd0.value, d1.value, d2.value;',
+            ['key1', 'a', 'key2', 'b', 'key3', 'c', 'key1', 'p', 'key2', 'q',
+             'key3', 'r'],
+            ["key1", "key2", "key3"], ["a", "b", "c"], ["p", "q", "r"])
+
+    def test__format_range_query_no_start(self):
+        self.assertFormatRangeQueryEquals(
+            'SELECT d.doc_id, d.doc_rev, d.content, count(c.doc_rev) FROM '
+            'document d, document_fields d0, document_fields d1, '
+            'document_fields d2 LEFT OUTER JOIN conflicts c ON c.doc_id = '
+            'd.doc_id WHERE d.doc_id = d0.doc_id AND d0.field_name = ? AND '
+            'd0.value <= ? AND d.doc_id = d1.doc_id AND d1.field_name = ? AND '
+            'd1.value <= ? AND d.doc_id = d2.doc_id AND d2.field_name = ? AND '
+            'd2.value <= ? GROUP BY d.doc_id, d.doc_rev, d.content ORDER BY '
+            'd0.value, d1.value, d2.value;',
+            ['key1', 'a', 'key2', 'b', 'key3', 'c'],
+            ["key1", "key2", "key3"], None, ["a", "b", "c"])
+
+    def test__format_range_query_no_end(self):
+        self.assertFormatRangeQueryEquals(
+            'SELECT d.doc_id, d.doc_rev, d.content, count(c.doc_rev) FROM '
+            'document d, document_fields d0, document_fields d1, '
+            'document_fields d2 LEFT OUTER JOIN conflicts c ON c.doc_id = '
+            'd.doc_id WHERE d.doc_id = d0.doc_id AND d0.field_name = ? AND '
+            'd0.value >= ? AND d.doc_id = d1.doc_id AND d1.field_name = ? AND '
+            'd1.value >= ? AND d.doc_id = d2.doc_id AND d2.field_name = ? AND '
+            'd2.value >= ? GROUP BY d.doc_id, d.doc_rev, d.content ORDER BY '
+            'd0.value, d1.value, d2.value;',
+            ['key1', 'a', 'key2', 'b', 'key3', 'c'],
+            ["key1", "key2", "key3"], ["a", "b", "c"], None)
+
+    def test__format_range_query_wildcard(self):
+        self.assertFormatRangeQueryEquals(
+            'SELECT d.doc_id, d.doc_rev, d.content, count(c.doc_rev) FROM '
+            'document d, document_fields d0, document_fields d1, '
+            'document_fields d2 LEFT OUTER JOIN conflicts c ON c.doc_id = '
+            'd.doc_id WHERE d.doc_id = d0.doc_id AND d0.field_name = ? AND '
+            'd0.value >= ? AND d.doc_id = d1.doc_id AND d1.field_name = ? AND '
+            'd1.value >= ? AND d.doc_id = d2.doc_id AND d2.field_name = ? AND '
+            'd2.value NOT NULL AND d.doc_id = d0.doc_id AND d0.field_name = ? '
+            'AND d0.value <= ? AND d.doc_id = d1.doc_id AND d1.field_name = ? '
+            'AND (d1.value < ? OR d1.value GLOB ?) AND d.doc_id = d2.doc_id '
+            'AND d2.field_name = ? AND d2.value NOT NULL GROUP BY d.doc_id, '
+            'd.doc_rev, d.content ORDER BY d0.value, d1.value, d2.value;',
+            ['key1', 'a', 'key2', 'b', 'key3', 'key1', 'p', 'key2', 'q', 'q*',
+             'key3'],
+            ["key1", "key2", "key3"], ["a", "b*", "*"], ["p", "q*", "*"])
+
+
+# -----------------------------------------------------------------------------
+# The following tests come from `u1db.tests.test_open`.
+# -----------------------------------------------------------------------------
+
+
+class SQLCipherOpen(test_open.TestU1DBOpen):
+
+    def test_open_no_create(self):
+        self.assertRaises(errors.DatabaseDoesNotExist,
+                          sqlcipher_open, self.db_path,
+                          PASSWORD,
+                          create=False)
+        self.assertFalse(os.path.exists(self.db_path))
+
+    def test_open_create(self):
+        db = sqlcipher_open(self.db_path, PASSWORD, create=True)
+        self.addCleanup(db.close)
+        self.assertTrue(os.path.exists(self.db_path))
+        self.assertIsInstance(db, SQLCipherDatabase)
+
+    def test_open_with_factory(self):
+        db = sqlcipher_open(self.db_path, PASSWORD, create=True,
+                            document_factory=SoledadDocument)
+        self.addCleanup(db.close)
+        doc = db.create_doc({})
+        self.assertTrue(isinstance(doc, SoledadDocument))
+
+    def test_open_existing(self):
+        db = sqlcipher_open(self.db_path, PASSWORD)
+        self.addCleanup(db.close)
+        doc = db.create_doc_from_json(tests.simple_doc)
+        # Even though create=True, we shouldn't wipe the db
+        db2 = sqlcipher_open(self.db_path, PASSWORD, create=True)
+        self.addCleanup(db2.close)
+        doc2 = db2.get_doc(doc.doc_id)
+        self.assertEqual(doc, doc2)
+
+    def test_open_existing_no_create(self):
+        db = sqlcipher_open(self.db_path, PASSWORD)
+        self.addCleanup(db.close)
+        db2 = sqlcipher_open(self.db_path, PASSWORD, create=False)
+        self.addCleanup(db2.close)
+        self.assertIsInstance(db2, SQLCipherDatabase)
+
+
+# -----------------------------------------------------------------------------
+# Tests for actual encryption of the database
+# -----------------------------------------------------------------------------
+
+class SQLCipherEncryptionTests(BaseSoledadTest):
+
+    """
+    Tests to guarantee SQLCipher is indeed encrypting data when storing.
+    """
+
+    def _delete_dbfiles(self):
+        for dbfile in [self.DB_FILE]:
+            if os.path.exists(dbfile):
+                os.unlink(dbfile)
+
+    def setUp(self):
+        # the following come from BaseLeapTest.setUpClass, because
+        # twisted.trial doesn't support such class methods for setting up
+        # test classes.
+        self.old_path = os.environ['PATH']
+        self.old_home = os.environ['HOME']
+        self.tempdir = tempfile.mkdtemp(prefix="leap_tests-")
+        self.home = self.tempdir
+        bin_tdir = os.path.join(
+            self.tempdir,
+            'bin')
+        os.environ["PATH"] = bin_tdir
+        os.environ["HOME"] = self.tempdir
+        # this is our own stuff
+        self.DB_FILE = os.path.join(self.tempdir, 'test.db')
+        self._delete_dbfiles()
+
+    def tearDown(self):
+        self._delete_dbfiles()
+        # the following come from BaseLeapTest.tearDownClass, because
+        # twisted.trial doesn't support such class methods for tearing down
+        # test classes.
+        os.environ["PATH"] = self.old_path
+        os.environ["HOME"] = self.old_home
+        # safety check! please do not wipe my home...
+        # XXX needs to adapt to non-linuces
+        soledad_assert(
+            self.tempdir.startswith('/tmp/leap_tests-') or
+            self.tempdir.startswith('/var/folder'),
+            "beware! tried to remove a dir which does not "
+            "live in temporal folder!")
+        shutil.rmtree(self.tempdir)
+
+    def test_try_to_open_encrypted_db_with_sqlite_backend(self):
+        """
+        SQLite backend should not succeed to open SQLCipher databases.
+        """
+        db = sqlcipher_open(self.DB_FILE, PASSWORD)
+        doc = db.create_doc_from_json(tests.simple_doc)
+        db.close()
+        try:
+            # trying to open an encrypted database with the regular u1db
+            # backend should raise a DatabaseError exception.
+            SQLitePartialExpandDatabase(self.DB_FILE,
+                                        document_factory=SoledadDocument)
+            raise DatabaseIsNotEncrypted()
+        except dbapi2.DatabaseError:
+            # at this point we know that the regular U1DB sqlcipher backend
+            # did not succeed on opening the database, so it was indeed
+            # encrypted.
+            db = sqlcipher_open(self.DB_FILE, PASSWORD)
+            doc = db.get_doc(doc.doc_id)
+            self.assertEqual(tests.simple_doc, doc.get_json(),
+                             'decrypted content mismatch')
+            db.close()
+
+    def test_try_to_open_raw_db_with_sqlcipher_backend(self):
+        """
+        SQLCipher backend should not succeed to open unencrypted databases.
+        """
+        db = SQLitePartialExpandDatabase(self.DB_FILE,
+                                         document_factory=SoledadDocument)
+        db.create_doc_from_json(tests.simple_doc)
+        db.close()
+        try:
+            # trying to open the a non-encrypted database with sqlcipher
+            # backend should raise a DatabaseIsNotEncrypted exception.
+            db = sqlcipher_open(self.DB_FILE, PASSWORD)
+            db.close()
+            raise dbapi2.DatabaseError(
+                "SQLCipher backend should not be able to open non-encrypted "
+                "dbs.")
+        except DatabaseIsNotEncrypted:
+            pass