def test_all_of_describes_first_failing_match_if_match_fails():
class Rectangle(object):
pass
expected_output = []
is_a(Rectangle).matches("Rectangle", expected_output)
mismatch_output = []
matcher = all_of(any_value(), is_a(Rectangle), has_attr(width=20))
matcher.matches("Rectangle", mismatch_output)
assert_equals(expected_output, mismatch_output)
def test_any_of_str_is_disjunction_of_passed_matchers():
class Rectangle(object):
pass
is_a_rectangle = is_a(Rectangle)
is_20_wide = has_attr(width=20)
matcher = any_of(is_a_rectangle, is_20_wide)
assert_equals("(%s) or (%s)" % (is_a_rectangle, is_20_wide), str(matcher))
def test_has_attr_can_use_matchers():
class Person(object):
def __init__(self, name):
self.name = name
matcher = has_attr(name=is_a(str))
assert matcher.matches(Person("Bob"), [])
assert not matcher.matches(Person(42), [])
def test_all_of_does_not_write_to_mismatch_output_if_it_matches():
class Rectangle(object):
def __init__(self, width, height):
self.width = width
self.height = height
mismatch_description = []
matcher = all_of(is_a(Rectangle), has_attr(width=20))
assert matcher.matches(Rectangle(20, 40), mismatch_description)
assert not mismatch_description
def test_adds_error_if_production_rule_is_never_used(context):
errors = []
parse("$SENTENCE -> \n$RUDE_ADJ -> ugly", RuleSet(), errors);
assert_that(errors, m.contains_exactly(m.all_of(
m.has_attr(message="Production rule with start symbol $RUDE_ADJ is never used (line 2)",
line_number=2, start="RUDE_ADJ"),
m.is_a(RuleNeverUsed)
)))
def test_adds_error_if_sentence_has_no_production_rule(context):
errors = []
parse("", RuleSet(), errors);
assert_that(errors, m.contains_exactly(m.all_of(
m.has_attr(message="No production rule for non-terminal $SENTENCE",
non_terminal="SENTENCE"),
m.is_a(NoProductionRule)
)))
def test_adds_error_if_non_terminal_is_used_with_no_matching_production_rule(context):
errors = []
parse("\n\n$SENTENCE -> $INSULT\n\n", RuleSet(), errors);
assert_that(errors, m.contains_exactly(m.all_of(
m.has_attr(message="No production rule for non-terminal $INSULT (line 3, character 14)",
line_number=3, character_number=14, non_terminal="INSULT"),
m.is_a(NoProductionRule)
)))
def test_adds_error_with_line_number_if_closing_brace_for_second_variable_is_missing(context):
errors = []
parse("\n\n$SENTENCE -> You're ${RUDE_ADJ}er than ${OBJ\n" +
"$SENTENCE ->\n\n",
RuleSet(),
errors)
assert_that(errors, m.contains_exactly(m.all_of(
m.has_attr(message="Missing closing brace on line 3 (opening brace at character 41)",
line_number=3, opening_brace_character_number=41),
m.is_a(MissingClosingBrace)
)))
def test_any_of_passes_if_any_matchers_satisfied():
class Rectangle(object):
def __init__(self, width, height):
self.width = width
self.height = height
class NotARectangle(object):
def __init__(self, width):
self.width = width
matcher = any_of(is_a(Rectangle), has_attr(width=20))
assert matcher.matches(Rectangle(20, 40), [])
assert matcher.matches(NotARectangle(20), [])
assert matcher.matches(Rectangle(30, 40), [])
assert not matcher.matches("Rectangle", [])
def test_adds_error_with_line_number_if_arrow_is_missing(context):
rule_set = context.mock(RuleSet)
allows(rule_set).add
errors = []
parse("\n\n$SENTENCE - You're ${RUDE_ADJ}er than I thought\n" +
"$RUDE_ADJ ->\n" +
"$SENTENCE -> $RUDE_ADJ",
rule_set,
errors)
assert_that(errors, m.contains_exactly(m.all_of(
m.has_attr(message="Missing symbol on line 3: ->", line_number=3),
m.is_a(MissingArrow)
)))
def test_is_a_does_not_show_module_if_type_is_builtin():
assert_equals("<value of type: int>", str(is_a(int)))
def test_is_a_writes_type_of_value_if_it_does_not_match():
class SomeClass(object):
pass
mismatch_output = []
is_a(str).matches(SomeClass(), mismatch_output)
assert_equals(["got <value of type: test.funk.test_matchers.SomeClass>"], mismatch_output)
def test_is_a_does_not_write_to_mismatch_output_if_it_matches():
mismatch_output = []
assert is_a(type).matches(str, mismatch_output)
assert is_a(str).matches("foo", mismatch_output)
assert not mismatch_output
def test_is_a_str_shows_type():
class SomeClass(object):
pass
assert_equals(str(is_a(SomeClass)), "<value of type: test.funk.test_matchers.SomeClass>")
def test_is_a_matches_on_type():
assert is_a(type).matches(str, [])
assert is_a(str).matches("foo", [])
assert is_a(object).matches("foo", [])
assert not is_a(str).matches(4, [])