def test_input_string_not_a_string_throw():
with pytest.raises(TypeError) as err_info:
context = Context({'key1': 'value1'})
input_string = 77
context.get_formatted_string(input_string)
assert repr(err_info.value) == (
"TypeError(\"can only format on strings. 77 is a <class 'int'> "
"instead.\",)")
def test_input_string_tag_not_in_context_should_throw():
with pytest.raises(KeyNotInContextError) as err_info:
context = Context({'key1': 'value1'})
input_string = '{key1} this is {key2} string'
context.get_formatted_string(input_string)
assert repr(err_info.value) == (
"KeyNotInContextError(\"Unable to format '{key1} this is "
"{key2} string' with {key2}, because context['key2'] doesn't "
"exist\",)")
def test_input_string_interpolate_sic():
context = Context({'key1': 'down', 'key2': 'valleys', 'key3': 'value3'})
input_string = '[sic]"Piping {key1} the {key2} wild"'
output = context.get_formatted_string(input_string)
assert output == "Piping {key1} the {key2} wild", (
"string interpolation incorrect")
def test_input_string_interpolate_works():
context = Context({'key1': 'down', 'key2': 'valleys', 'key3': 'value3'})
input_string = 'Piping {key1} the {key2} wild'
output = context.get_formatted_string(input_string)
assert output == 'Piping down the valleys wild', (
"string interpolation incorrect")
