Avoid using star import in __init__.py

1 files changed, 34 insertions, 0 deletions

diff --git a/tests/test_imports.py b/tests/test_imports.py
new file mode 100644
index 0000000..7692483
--- /dev/null
+++ b/tests/test_imports.py
@@ -0,0 +1,34 @@
+import re
+import adblock
+
+
+def get_added_classes():
+    """
+    Try to get the names of all classes that we added to the Python module
+    from Rust. As always, we unfortunately don't have access to the Rust AST
+    so we have to make do with regular expressions.
+    """
+    classes = []
+    with open("src/lib.rs", "r", encoding="utf-8") as rs_f:
+        for line in rs_f:
+            match = re.match(r"m\.add_class::<(.+)>\(\)\?;", line.strip())
+            if match is not None:
+                classes.append(match.group(1))
+    return classes
+
+
+def test_added_classes():
+    """
+    Make sure that there's no class that we added in Rust but didn't import in
+    `__init__.py` and vice versa.
+    """
+    added_classes = get_added_classes()
+    assert added_classes == list(adblock.__all__)
+
+
+def test_dunder_all_classes_imported():
+    """
+    Make sure that there's no class in `__all__` that we haven't imported.
+    """
+    for c in adblock.__all__:
+        assert hasattr(adblock, c)