basic tests of exec script help messages

tests/exec_test.py

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+# Copyright 2021 Agnostiq Inc.
+#
+# This file is part of Covalent.
+#
+# Licensed under the Apache License 2.0 (the "License"). A copy of the
+# License may be obtained with this software package or at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Use of this file is prohibited except in compliance with the License.
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Tests for the @electron task execution script that runs on the SLURM cluster"""
+
+from unittest import mock
+
+import filelock
+import pytest
+
+
+def test_setup_import_error():
+    """Test error message correctly reported in case of ImportError"""
+    patched_import_covalent = mock.patch(
+        "covalent_slurm_plugin.exec._import_covalent",
+        side_effect=ImportError()
+    )
+
+    with patched_import_covalent:
+        with pytest.raises(
+            RuntimeError,
+            match="The covalent SDK is not installed in the Slurm job environment."
+        ):
+            from covalent_slurm_plugin import exec
+            exec._check_setup()
+
+
+def test_setup_filelock_timeout_error():
+    """Test error message correctly reported in case of filelock Timeout error"""
+    patched_import_covalent = mock.patch(
+        "covalent_slurm_plugin.exec._import_covalent",
+        side_effect=filelock._error.Timeout("nonexistent_lock_file")
+    )
+
+    with patched_import_covalent:
+        with pytest.raises(
+            RuntimeError,
+            match="Failed to acquire file lock"
+        ):
+            from covalent_slurm_plugin import exec
+            exec._check_setup()