pytest-ast-transformer

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pytest-ast-transformer

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AST Transformer for tests integrated with py.test.

pytest-ast-transformer 최신버젼 다운로드

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## About
AST Transformer integrated with py.test.

Useful for debug, refactoring, 'clean asserts' (see [examples/replace_asserts](examples/replace_asserts))

Support options
---------------
| Options                  | Description                    |
| -----------              | -----------                    |
| `--show-code`            | show generated code            |
| `--disable-transforms`   | disable all ast transformers   |

## Install
```bash
pip install pytest-ast-transformer
```

## Usage

* Write ast transformer
    ```python
    # transformer.py
    import ast

from pytest_ast_transformer.ast_transformer import PytestTransformer

def my_assert(test_result, msg=''):
        print(f'my assert: {test_result} {msg}')
        assert test_result, msg

class AssertTransformer(PytestTransformer):
        context = {
            'my_assert': my_assert
        }

def visit_Assert(self, node: ast.Assert) -> ast.Expr:
            func_name = ast.Name(id='my_assert', ctx=ast.Load())
            call_func = ast.Call(func=func_name, args=[node.test, node.msg], keywords=[])
            expr = ast.Expr(value=call_func)

return ast.fix_missing_locations(expr)
    ```
* Register new ast transformer
    ```python
    # conftest.py
    from pytest_ast_transformer.ast_manager import ASTManager
    from tests.transformer import AssertTransformer
    
    
    def pytest_register_ast_transformer(ast_manager: ASTManager):
        ast_manager.add_transformer(AssertTransformer())
    ```

pytest-ast-transformer

pytest-ast-transformer 최신버젼 다운로드

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