diff --git a/requirements.txt b/requirements.txt
index ecb021cd..6f4a22fb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,6 +2,7 @@ coverage
 psutil
 pycryptodome
 PyQt5;python_version>="3.7"
+mock;python_version<="2.7"
 python_prctl;platform_system=="Linux"
 six
 xvfbwrapper;platform_system=="Linux"
diff --git a/src/tests/test_helper_sql.py b/src/tests/test_helper_sql.py
new file mode 100644
index 00000000..036bd2c9
--- /dev/null
+++ b/src/tests/test_helper_sql.py
@@ -0,0 +1,131 @@
+"""Test cases for helper_sql"""
+
+import unittest
+
+try:
+    # Python 3
+    from unittest.mock import patch
+except ImportError:
+    # Python 2
+    from mock import patch
+
+import pybitmessage.helper_sql as helper_sql
+
+
+class TestHelperSql(unittest.TestCase):
+    """Test class for helper_sql"""
+
+    @classmethod
+    def setUpClass(cls):
+        helper_sql.sql_available = True
+
+    @patch("pybitmessage.helper_sql.sqlSubmitQueue.put")
+    @patch("pybitmessage.helper_sql.sqlReturnQueue.get")
+    def test_sqlquery_no_args(self, mock_sqlreturnqueue_get, mock_sqlsubmitqueue_put):
+        """Test sqlQuery with no additional arguments"""
+        mock_sqlreturnqueue_get.return_value = ("dummy_result", None)
+        result = helper_sql.sqlQuery(
+            "SELECT msgid FROM inbox where folder='inbox' ORDER BY received"
+        )
+        self.assertEqual(mock_sqlsubmitqueue_put.call_count, 2)
+        self.assertEqual(result, "dummy_result")
+
+    @patch("pybitmessage.helper_sql.sqlSubmitQueue.put")
+    @patch("pybitmessage.helper_sql.sqlReturnQueue.get")
+    def test_sqlquery_with_args(self, mock_sqlreturnqueue_get, mock_sqlsubmitqueue_put):
+        """Test sqlQuery with additional arguments"""
+        mock_sqlreturnqueue_get.return_value = ("dummy_result", None)
+        result = helper_sql.sqlQuery(
+            "SELECT address FROM addressbook WHERE address=?", "PB-5yfds868gbkj"
+        )
+        self.assertEqual(mock_sqlsubmitqueue_put.call_count, 2)
+        self.assertEqual(result, "dummy_result")
+
+    @patch("pybitmessage.helper_sql.sqlSubmitQueue.put")
+    @patch("pybitmessage.helper_sql.sqlReturnQueue.get")
+    def test_sqlexecute(self, mock_sqlreturnqueue_get, mock_sqlsubmitqueue_put):
+        """Test sqlExecute with valid arguments"""
+        mock_sqlreturnqueue_get.return_value = (None, 1)
+        rowcount = helper_sql.sqlExecute(
+            "UPDATE sent SET status = 'msgqueued'"
+            "WHERE ackdata = ? AND folder = 'sent'",
+            "1710652313",
+        )
+        self.assertEqual(mock_sqlsubmitqueue_put.call_count, 3)
+        self.assertEqual(rowcount, 1)
+
+    @patch("pybitmessage.helper_sql.SqlBulkExecute.execute")
+    def test_sqlexecute_script(self, mock_execute):
+        """Test sqlExecuteScript with a SQL script"""
+        helper_sql.sqlExecuteScript(
+            "CREATE TABLE test (id INTEGER); INSERT INTO test VALUES (1);"
+        )
+        self.assertTrue(mock_execute.assert_called)
+
+    @patch("pybitmessage.helper_sql.sqlSubmitQueue.put")
+    @patch(
+        "pybitmessage.helper_sql.sqlReturnQueue.get",
+    )
+    def test_sqlexecute_chunked(self, mock_sqlreturnqueue_get, mock_sqlsubmitqueue_put):
+        """Test sqlExecuteChunked with valid arguments"""
+        # side_effect is list of return value (_, rowcount)
+        # of sqlReturnQueue.get for each chunk
+        CHUNK_COUNT = 6
+        CHUNK_SIZE = 999
+        ID_COUNT = CHUNK_COUNT * CHUNK_SIZE
+        CHUNKS_ROWCOUNT_LIST = [50, 29, 28, 18, 678, 900]
+        TOTAL_ROW_COUNT = sum(CHUNKS_ROWCOUNT_LIST)
+        mock_sqlreturnqueue_get.side_effect = [(None, rowcount) for rowcount in CHUNKS_ROWCOUNT_LIST]
+        args = []
+        for i in range(0, ID_COUNT):
+            args.append("arg{}".format(i))
+        total_row_count_return = helper_sql.sqlExecuteChunked(
+            "INSERT INTO table VALUES {}", ID_COUNT, *args
+        )
+        self.assertEqual(TOTAL_ROW_COUNT, total_row_count_return)
+        self.assertTrue(mock_sqlsubmitqueue_put.called)
+        self.assertTrue(mock_sqlreturnqueue_get.called)
+
+    @patch("pybitmessage.helper_sql.sqlSubmitQueue.put")
+    @patch("pybitmessage.helper_sql.sqlReturnQueue.get")
+    def test_sqlexecute_chunked_with_idcount_zero(
+        self, mock_sqlreturnqueue_get, mock_sqlsubmitqueue_put
+    ):
+        """Test sqlExecuteChunked with id count 0"""
+        ID_COUNT = 0
+        args = list()
+        for i in range(0, ID_COUNT):
+            args.append("arg{}".format(i))
+        total_row_count = helper_sql.sqlExecuteChunked(
+            "INSERT INTO table VALUES {}", ID_COUNT, *args
+        )
+        self.assertEqual(total_row_count, 0)
+        self.assertFalse(mock_sqlsubmitqueue_put.called)
+        self.assertFalse(mock_sqlreturnqueue_get.called)
+
+    @patch("pybitmessage.helper_sql.sqlSubmitQueue.put")
+    @patch("pybitmessage.helper_sql.sqlReturnQueue.get")
+    def test_sqlexecute_chunked_with_args_less(
+        self, mock_sqlreturnqueue_get, mock_sqlsubmitqueue_put
+    ):
+        """Test sqlExecuteChunked with length of args less than idcount"""
+        ID_COUNT = 12
+        args = ["args0", "arg1"]
+        total_row_count = helper_sql.sqlExecuteChunked(
+            "INSERT INTO table VALUES {}", ID_COUNT, *args
+        )
+        self.assertEqual(total_row_count, 0)
+        self.assertFalse(mock_sqlsubmitqueue_put.called)
+        self.assertFalse(mock_sqlreturnqueue_get.called)
+
+    @patch("pybitmessage.helper_sql.sqlSubmitQueue.put")
+    @patch("pybitmessage.helper_sql.sqlSubmitQueue.task_done")
+    def test_sqlstored_procedure(self, mock_task_done, mock_sqlsubmitqueue_put):
+        """Test sqlStoredProcedure with a stored procedure name"""
+        helper_sql.sqlStoredProcedure("exit")
+        self.assertTrue(mock_task_done.called_once)
+        mock_sqlsubmitqueue_put.assert_called_with("terminate")
+
+    @classmethod
+    def tearDownClass(cls):
+        helper_sql.sql_available = False