Add a test importing all submodules of scikit-decide

tests/test_import_all_submodules.py

@@ -0,0 +1,43 @@
+#  Copyright (c) 2022 AIRBUS and its affiliates.
+#  This source code is licensed under the MIT license found in the
+#  LICENSE file in the root directory of this source tree.
+
+import importlib
+import logging
+import pkgutil
+
+logger = logging.getLogger(__name__)
+
+
+def find_abs_modules(package):
+    """Find names of all submodules in the package."""
+    path_list = []
+    for modinfo in pkgutil.walk_packages(package.__path__, f"{package.__name__}."):
+        if not modinfo.ispkg:
+            path_list.append(modinfo.name)
+    return path_list
+
+
+def try_importing_all_submodules(package):
+    modules_with_errors = []
+    for m in find_abs_modules(package):
+        try:
+            importlib.import_module(m)
+        except Exception as e:
+            modules_with_errors.append(m)
+            print(f"{m}: {e.__class__.__name__}: {e}")
+    if len(modules_with_errors) > 0:
+        raise ImportError(
+            f"{len(modules_with_errors)} submodules of {package.__name__} cannot be imported\n"
+            + f"{modules_with_errors}"
+        )
+
+
+def test_importing_all_submodules():
+    import skdecide
+
+    try_importing_all_submodules(skdecide)
+
+
+if __name__ == "__main__":
+    test_importing_all_submodules()