100% coverage for pythonexpr.py

src/zope/tales/tests/test_pythonexpr.py

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+##############################################################################
+#
+# Copyright (c) 2017 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+
+import unittest
+
+from zope.tales.engine import Engine
+from zope.tales.tales import Context
+
+from zope.tales.pythonexpr import PythonExpr
+from zope.tales.pythonexpr import ExprTypeProxy
+
+class TestPythonExpr(unittest.TestCase):
+
+    def setUp(self):
+        self.context = Context(Engine, {})
+        self.engine = Engine
+
+    def test_repr_str(self):
+        expr = PythonExpr(None, 'a', None)
+        self.assertEqual('Python expression "(a)"', str(expr))
+        self.assertEqual('<PythonExpr (a)>', repr(expr))
+
+    def test_bind_not_dict(self):
+        expr = PythonExpr(None, 'test_bind_not_dict', None)
+        names = expr._bind_used_names(self.context, type(self))
+
+        # It found it in type(self).__dict__, so it only added
+        # __builtins__ to the names
+        self.assertEqual(names,
+                         {'__builtins__': type(self).__dict__})
+
+    def test_bind_as_expression(self):
+        expr = PythonExpr(None, 'string("abc")', None)
+        names = expr._bind_used_names(self.context, {})
+
+        string = names['string']
+        self.assertIsInstance(string, ExprTypeProxy)
+
+        self.assertEqual(expr(self.context), "abc")