def check_positive_must_startswith(regexp, char, strict):
reg = Regexp(regexp, case_sensitive=True, strict=strict)
assert_true(reg.must_startswith(char),
'"{}" MUST start\'s with "{}"'.format(regexp, char))
reg = Regexp(regexp, case_sensitive=False, strict=strict)
char = char.upper()
assert_true(
reg.must_startswith(char),
'"{}" (case insensitive) MUST start\'s with "{}"'.format(regexp, char))
def check_negative_must_startswith(regexp, char, strict):
reg = Regexp(regexp, case_sensitive=True, strict=strict)
assert_false(
reg.must_startswith(char),
'{reg!r} MUST NOT start\'s with {chr!r}'.format(reg=regexp, chr=char))
reg = Regexp(regexp, case_sensitive=False, strict=strict)
char = char.upper()
assert_false(
reg.must_startswith(char),
'{reg!r} (case insensitive) MUST NOT start\'s with {chr!r}'.format(
reg=regexp, chr=char))
