def test_symbolic_expression_matcher_pymbolic_import_error(self):
with mock.patch.dict(sys.modules, {'pymbolic': None}):
expected_warning = ("some_where: unable to check symbolic "
"expression")
mock_vctx = mock.MagicMock()
SymbolicExpressionMatcher(mock_vctx, "some_where", "abcd")
self.assertEqual(mock_vctx.add_warning.call_count, 1)
self.assertIn(expected_warning,
mock_vctx.add_warning.call_args[0][1])
# no validation context
SymbolicExpressionMatcher(None, "", "abcd")
def test_symbolic_expression_matcher_validation_error(self):
with mock.patch("pymbolic.parse") as mock_pymbolic_parse:
expected_error_msg = "some error"
mock_pymbolic_parse.side_effect = ValueError(expected_error_msg)
with self.assertRaises(ValidationError) as cm:
SymbolicExpressionMatcher(None, "", "abcd")
self.assertIn(expected_error_msg, str(cm.exception))
def test_symbolic_expression_matcher_validate(self):
pattern = "1/A"
matcher = SymbolicExpressionMatcher(None, "", pattern)
matcher.validate("A^(-1)")
with self.assertRaises(forms.ValidationError) as cm:
matcher.validate("A^^(-1)")
self.assertIn(
"ParseError: terminal expected, bitwisexor found "
"instead at index 2: ...^(-1)...']", str(cm.exception))
self.assertEqual(matcher.correct_answer_text(), pattern)
def test_symbolic_expression_matcher_validate(self):
pattern = "1/A"
matcher = SymbolicExpressionMatcher(None, "", pattern)
matcher.validate("A^(-1)")
with self.assertRaises(forms.ValidationError) as cm:
matcher.validate("A^^(-1)")
self.assertIn("ParseError: terminal expected, bitwisexor found "
"instead at index 2: ...^(-1)...']",
str(cm.exception))
self.assertEqual(matcher.correct_answer_text(), pattern)
def test_symbolic_expression_matcher_grade(self):
matcher = SymbolicExpressionMatcher(None, "", "1/A")
self.assertEqual(matcher.grade("A**(-1)"), 1)
# case sensitive
self.assertEqual(matcher.grade("a**(-1)"), 0)
self.assertEqual(matcher.grade("A**(-2)"), 0)
# parse_sympy error
self.assertEqual(matcher.grade("A^^(-2)"), 0)
# simplify error
with mock.patch("sympy.simplify") as mock_simplify:
mock_simplify.side_effect = ValueError("my simplify error")
self.assertEqual(matcher.grade("abcd"), 0)
def test_symbolic_expression_matcher_grade(self):
matcher = SymbolicExpressionMatcher(None, "", "1/A")
self.assertEqual(matcher.grade("A**(-1)"), 1)
# case sensitive
self.assertEqual(matcher.grade("a**(-1)"), 0)
self.assertEqual(matcher.grade("A**(-2)"), 0)
# parse_sympy error
self.assertEqual(matcher.grade("A^^(-2)"), 0)
# simplify error
with mock.patch("sympy.simplify") as mock_simplify:
mock_simplify.side_effect = ValueError("my simplify error")
self.assertEqual(matcher.grade("abcd"), 0)