Initial commit

venv/lib/python3.8/site-packages/tests/unittest_utils.py

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+# Copyright (c) 2008-2010, 2013 LOGILAB S.A. (Paris, FRANCE) <contact@logilab.fr>
+# Copyright (c) 2014 Google, Inc.
+# Copyright (c) 2015-2016, 2018 Claudiu Popa <pcmanticore@gmail.com>
+# Copyright (c) 2016 Ceridwen <ceridwenv@gmail.com>
+# Copyright (c) 2016 Dave Baum <dbaum@google.com>
+# Copyright (c) 2019 Ashley Whetter <ashley@awhetter.co.uk>
+
+# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html
+# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER
+
+import unittest
+
+from astroid import builder
+from astroid import InferenceError
+from astroid import nodes
+from astroid import node_classes
+from astroid import util as astroid_util
+
+
+class InferenceUtil(unittest.TestCase):
+    def test_not_exclusive(self):
+        module = builder.parse(
+            """
+        x = 10
+        for x in range(5):
+            print (x)
+
+        if x > 0:
+            print ('#' * x)
+        """,
+            __name__,
+            __file__,
+        )
+        xass1 = module.locals["x"][0]
+        assert xass1.lineno == 2
+        xnames = [n for n in module.nodes_of_class(nodes.Name) if n.name == "x"]
+        assert len(xnames) == 3
+        assert xnames[1].lineno == 6
+        self.assertEqual(node_classes.are_exclusive(xass1, xnames[1]), False)
+        self.assertEqual(node_classes.are_exclusive(xass1, xnames[2]), False)
+
+    def test_if(self):
+        module = builder.parse(
+            """
+        if 1:
+            a = 1
+            a = 2
+        elif 2:
+            a = 12
+            a = 13
+        else:
+            a = 3
+            a = 4
+        """
+        )
+        a1 = module.locals["a"][0]
+        a2 = module.locals["a"][1]
+        a3 = module.locals["a"][2]
+        a4 = module.locals["a"][3]
+        a5 = module.locals["a"][4]
+        a6 = module.locals["a"][5]
+        self.assertEqual(node_classes.are_exclusive(a1, a2), False)
+        self.assertEqual(node_classes.are_exclusive(a1, a3), True)
+        self.assertEqual(node_classes.are_exclusive(a1, a5), True)
+        self.assertEqual(node_classes.are_exclusive(a3, a5), True)
+        self.assertEqual(node_classes.are_exclusive(a3, a4), False)
+        self.assertEqual(node_classes.are_exclusive(a5, a6), False)
+
+    def test_try_except(self):
+        module = builder.parse(
+            """
+        try:
+            def exclusive_func2():
+                "docstring"
+        except TypeError:
+            def exclusive_func2():
+                "docstring"
+        except:
+            def exclusive_func2():
+                "docstring"
+        else:
+            def exclusive_func2():
+                "this one redefine the one defined line 42"
+        """
+        )
+        f1 = module.locals["exclusive_func2"][0]
+        f2 = module.locals["exclusive_func2"][1]
+        f3 = module.locals["exclusive_func2"][2]
+        f4 = module.locals["exclusive_func2"][3]
+        self.assertEqual(node_classes.are_exclusive(f1, f2), True)
+        self.assertEqual(node_classes.are_exclusive(f1, f3), True)
+        self.assertEqual(node_classes.are_exclusive(f1, f4), False)
+        self.assertEqual(node_classes.are_exclusive(f2, f4), True)
+        self.assertEqual(node_classes.are_exclusive(f3, f4), True)
+        self.assertEqual(node_classes.are_exclusive(f3, f2), True)
+
+        self.assertEqual(node_classes.are_exclusive(f2, f1), True)
+        self.assertEqual(node_classes.are_exclusive(f4, f1), False)
+        self.assertEqual(node_classes.are_exclusive(f4, f2), True)
+
+    def test_unpack_infer_uninferable_nodes(self):
+        node = builder.extract_node(
+            """
+        x = [A] * 1
+        f = [x, [A] * 2]
+        f
+        """
+        )
+        inferred = next(node.infer())
+        unpacked = list(node_classes.unpack_infer(inferred))
+        self.assertEqual(len(unpacked), 3)
+        self.assertTrue(all(elt is astroid_util.Uninferable for elt in unpacked))
+
+    def test_unpack_infer_empty_tuple(self):
+        node = builder.extract_node(
+            """
+        ()
+        """
+        )
+        inferred = next(node.infer())
+        with self.assertRaises(InferenceError):
+            list(node_classes.unpack_infer(inferred))
+
+
+if __name__ == "__main__":
+    unittest.main()