Add method for updating values from a sample dataset

* gn3/db/traits.py (update_sample_data): New function.
* tests/unit/db/test_traits.py: New test cases for ^^.

1 files changed, 37 insertions, 0 deletions

diff --git a/tests/unit/db/test_traits.py b/tests/unit/db/test_traits.py
new file mode 100644
index 0000000..0e69bbe
--- /dev/null
+++ b/tests/unit/db/test_traits.py
@@ -0,0 +1,37 @@
+"""Tests for db/traits.py"""
+from unittest import TestCase
+from unittest import mock
+
+from gn3.db.traits import update_sample_data
+
+
+class TestTraitsSqlMethods(TestCase):
+    """Test cases for sql operations that affect traits"""
+    def test_update_sample_data(self):
+        """Test that the SQL queries when calling update_sample_data are called with
+        the right calls.
+
+        """
+        db_mock = mock.MagicMock()
+
+        STRAIN_ID_SQL: str = "UPDATE Strain SET Name = '%s' WHERE Id = %s"
+        PUBLISH_DATA_SQL: str = ("UPDATE PublishData SET value = %s "
+                                 "WHERE StrainId = %s AND DataId = %s")
+        PUBLISH_SE_SQL: str = ("UPDATE PublishSE SET error = %s "
+                               "WHERE StrainId = %s AND DataId = %s")
+        N_STRAIN_SQL: str = ("UPDATE NStrain SET count = '%s' "
+                             "WHERE StrainId = %s AND DataId = %s")
+
+        with db_mock.cursor() as cursor:
+            type(cursor).rowcount = 1
+            self.assertEqual(update_sample_data(
+                conn=db_mock, strain_name="BXD11",
+                strain_id=10, publish_data_id=8967049,
+                value=18.7, error=2.3, count=2),
+                             (1, 1, 1, 1))
+            cursor.execute.assert_has_calls(
+                [mock.call(STRAIN_ID_SQL, ('BXD11', 10)),
+                 mock.call(PUBLISH_DATA_SQL, (18.7, 10, 8967049)),
+                 mock.call(PUBLISH_SE_SQL, (2.3, 10, 8967049)),
+                 mock.call(N_STRAIN_SQL, (2, 10, 8967049))]
+            )