def test_float_matcher_grade_neither_rtol_nor_atol(self):
matcher = FloatMatcher(None, "",
dict_to_struct(
{"type": "float",
"value": "20.1",
}))
self.assertEqual(matcher.grade(""), 0)
self.assertEqual(matcher.grade("abcd"), 0)
self.assertEqual(matcher.grade(20000), 1)
self.assertEqual(matcher.grade(-2), 1)
def test_float_matcher_grade_inf(self):
matcher = FloatMatcher(None, "",
dict_to_struct(
{"type": "float",
"value": "inf",
"rtol": 0.01
}))
self.assertEqual(matcher.grade(float("nan")), 0)
self.assertEqual(matcher.grade(float("inf")), 1)
self.assertEqual(matcher.grade(float("20.5")), 0)
def test_float_matcher_value_error(self):
expected_error_msg = "'value' does not provide a valid float literal"
with self.assertRaises(ValidationError) as cm:
FloatMatcher(None, "",
dict_to_struct({
"type": "float",
"value": "abcd"
}))
self.assertIn(expected_error_msg, str(cm.exception))
def test_float_matcher_grade_rtol(self):
matcher = FloatMatcher(None, "",
dict_to_struct(
{"type": "float",
"value": "100.1",
"rtol": 0.01
}))
self.assertEqual(matcher.grade(""), 0)
self.assertEqual(matcher.grade(0), 0)
self.assertEqual(matcher.grade("abcd"), 0)
self.assertEqual(matcher.grade(100), 1)
self.assertEqual(matcher.grade(100.9), 1)
self.assertEqual(matcher.grade(101.11), 0)
self.assertEqual(matcher.correct_answer_text(), str(100.1))
self.assertEqual(matcher.grade(float("nan")), 0)
self.assertEqual(matcher.grade(float("inf")), 0)
def test_float_matcher_neither_atol_nor_rtol_present_warning(self):
mock_vctx = mock.MagicMock()
expected_warning = ("Float match should have either rtol or atol--"
"otherwise it will match any number")
FloatMatcher(mock_vctx, "some where",
dict_to_struct(
{"type": "float",
"value": "1"}))
self.assertIn(expected_warning, mock_vctx.add_warning.call_args[0])
def test_float_matcher_value_zero_rtol_zero_error(self):
expected_error_msg = "'rtol' not allowed when 'value' is zero"
with self.assertRaises(ValidationError) as cm:
FloatMatcher(None, "",
dict_to_struct(
{"type": "float",
"value": "0",
"rtol": "0"}))
self.assertIn(expected_error_msg, str(cm.exception))
def test_float_matcher_value_zero_atol_not_present_warning(self):
mock_vctx = mock.MagicMock()
expected_warning = ("Float match for 'value' zero should have "
"atol--otherwise it will match any number")
FloatMatcher(mock_vctx, "some where",
dict_to_struct(
{"type": "float",
"value": "0"}))
self.assertIn(expected_warning, mock_vctx.add_warning.call_args[0])
def test_float_matcher_grade_atol(self):
matcher = FloatMatcher(None, "",
dict_to_struct(
{"type": "float",
"value": "1",
"atol": 0.01
}))
self.assertEqual(matcher.grade(""), 0)
self.assertEqual(matcher.grade(0), 0)
self.assertEqual(matcher.grade("abcd"), 0)
self.assertEqual(matcher.grade(1), 1)
self.assertEqual(matcher.grade(1.005), 1)
self.assertEqual(matcher.grade(1.02), 0)
self.assertEqual(matcher.grade(float("nan")), 0)
self.assertEqual(matcher.grade(float("inf")), 0)
def test_float_matcher_grade_neither_rtol_nor_atol(self):
matcher = FloatMatcher(
None, "", dict_to_struct({
"type": "float",
"value": "20.1",
}))
self.assertEqual(matcher.grade(""), 0)
self.assertEqual(matcher.grade("abcd"), 0)
self.assertEqual(matcher.grade(20000), 1)
self.assertEqual(matcher.grade(-2), 1)
def test_float_matcher_validate(self):
matcher = FloatMatcher(None, "",
dict_to_struct(
{"type": "float",
"value": "1",
"atol": 0.01
}))
matcher.validate(1.1)
expected_error_msg = "TypeError: can\'t convert expression to float"
with self.assertRaises(forms.ValidationError) as cm:
matcher.validate("abcd")
self.assertIn(expected_error_msg, str(cm.exception))
def test_float_matcher_struct_validation_error(self):
# make sure validate_struct is called
expected_error_msg = "not a key-value map"
with self.assertRaises(ValidationError) as cm:
FloatMatcher(None, "", "abcd")
self.assertIn(expected_error_msg, str(cm.exception))
