def test_get_lookup_fields_fetches_json_from_url(fake_requests_get):
#arrange
input = "https://fake-url.com/data.txt"
#act
result = utils.get_lookup_fields(input)
#assert
fake_requests_get.assert_called_once_with(url=input)
def test_get_lookup_fields_loads_file_when_input_not_url(
fake_get_lookup_fields_from_url):
#arrange
input = "https://fake-url.com/data.txt"
#act
result = utils.get_lookup_fields(input)
#assert
assert fake_get_lookup_fields_from_url.called
def test_get_lookup_fields_fetches_json_from_url():
#arrange
input = "data.txt"
data = {"foo": "bar"}
json_text = json.dumps(data)
#act
with patch('builtins.open', mock_open(read_data=json_text), create=True):
result = utils.get_lookup_fields(input)
#assert
assert result["foo"] == data["foo"]
def test_get_lookup_fields_raises_exception_when_empty_string_passed_in():
#arrange
input = ""
#act
# with pytest.raises(ValueError) as excinfo:
# utils.get_lookup_fields(input)
# #assert
# assert "is_url input is empty string!" in str(excinfo.value)
result = utils.get_lookup_fields(input)
assert result == None
def test_get_lookup_fields_raises_exception_when_number_passed_in():
#arrange
input = 124
# #act
# with pytest.raises(ValueError) as excinfo:
# utils.get_lookup_fields(input)
# #assert
# assert "is_url input is numeric! Must be string" in str(excinfo.value)
result = utils.get_lookup_fields(input)
assert result == None
def test_get_lookup_fields_should_only_accept_strings():
#arrange
def input():
print("a fake method")
# #act
# with pytest.raises(ValueError) as excinfo:
# utils.get_lookup_fields(input)
# #assert
# assert "is_url input must be string" in str(excinfo.value)
result = utils.get_lookup_fields(input)
assert result == None