added test for issue #233

glom/test/test_regressions.py

@@ -0,0 +1,46 @@
+
+def test_frictionless_compat():
+    '''
+    This was a subtle one involving the frictionless library.
+    https://github.com/mahmoud/glom/issues/233
+    '''
+    class Schema(dict):
+        '''minimal stand-in for frictionless.Schema'''
+        def __getattr__(self, name):
+            if name in self:
+                return [self[name]]
+            return []
+
+    from glom import glom, Assign
+
+    fields = [
+        {"name": "id", "type": "number"},
+        {"name": "foo", "type": "datetime"},
+        {"name": "bar", "type": "string"},
+        {"name": "baz", "type": "boolean"},
+    ]
+    schema = Schema(fields=fields, missing_values="NA")
+
+    # access
+    assert schema.primary_key == []
+    assert glom(schema, "primary_key") == []  # fails with KeyError
+
+    # expected
+    try:
+        assert schema["primaryKey"]
+    except KeyError:
+        pass
+
+    # expected
+    try:
+        assert glom(schema, "primaryKey")
+    except KeyError:
+        pass
+
+    # assign
+    glom(schema, Assign("primary_key", "foo"))
+    assert schema.primary_key == ["foo"]
+    assert schema["primaryKey"] == "foo"
+
+    glom(schema, Assign("primaryKey", "id"))  # fails with AttributeError
+    assert schema["primaryKey"] == "id"