Add test that just imports everything.

tests/test_import.py

@@ -0,0 +1,64 @@
+# This file is part of drp_tasks.
+#
+# LSST Data Management System
+# This product includes software developed by the
+# LSST Project (http://www.lsst.org/).
+# See COPYRIGHT file at the top of the source tree.
+#
+# 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 LSST License Statement and
+# the GNU General Public License along with this program.  If not,
+# see <https://www.lsstcorp.org/LegalNotices/>.
+
+import importlib.resources
+import os.path
+import unittest
+
+from lsst.utils import doImport
+
+
+class ImportTestCase(unittest.TestCase):
+    """Test that every file can be imported.
+
+    drp_tasks does not import all the task code by default and not
+    every file will always have a test.
+    """
+
+    def test_import(self):
+        self.assertImport("lsst.drp.tasks")
+
+    def test_import_script(self):
+        self.assertImport("lsst.drp.tasks.script")
+
+    def test_import_dataFrameActions(self):
+        self.assertImport("lsst.drp.tasks.dataFrameActions")
+
+    def test_import_configurableActions(self):
+        self.assertImport("lsst.drp.tasks.configurableActions")
+
+    def assertImport(self, root_pkg):
+        for file in importlib.resources.contents(root_pkg):
+            if not file.endswith(".py"):
+                continue
+            if file.startswith("__"):
+                continue
+            root, ext = os.path.splitext(file)
+            module_name = f"{root_pkg}.{root}"
+            with self.subTest(module=module_name):
+                try:
+                    doImport(module_name)
+                except ImportError as e:
+                    raise AssertionError(f"Error importing module {module_name}: {e}") from e
+
+
+if __name__ == "__main__":
+    unittest.main()