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| """Test formatting functionality.""" | |
| import pytest | |
| from langchain.formatting import formatter | |
| def test_valid_formatting() -> None: | |
| """Test formatting works as expected.""" | |
| template = "This is a {foo} test." | |
| output = formatter.format(template, foo="good") | |
| expected_output = "This is a good test." | |
| assert output == expected_output | |
| def test_does_not_allow_args() -> None: | |
| """Test formatting raises error when args are provided.""" | |
| template = "This is a {} test." | |
| with pytest.raises(ValueError): | |
| formatter.format(template, "good") | |
| def test_does_not_allow_extra_kwargs() -> None: | |
| """Test formatting does not allow extra key word arguments.""" | |
| template = "This is a {foo} test." | |
| with pytest.raises(KeyError): | |
| formatter.format(template, foo="good", bar="oops") | |