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How to use rewrite_asserts method in Pytest

Best Python code snippet using pytest

_pytest_support.py

Source:_pytest_support.py

...185        from _pytest.assertion.rewrite import rewrite_asserts186        pytest_version = get_pytest_version()187        if pytest_version.release[0] >= 5:188            # TODO: re-create a pseudo code to include the asserts?189            rewrite_asserts(node, b"")190        else:191            rewrite_asserts(node)192        return node193def get_pytest_version():194    return packaging.version.parse(pytest.__version__)195@magics_class196class IPyTestMagics(Magics):197    @cell_magic("run_pytest[clean]")198    def run_pytest_clean(self, line, cell):199        import __main__200        clean_tests(items=__main__.__dict__)201        return self.run_pytest(line, cell)202    @cell_magic203    def run_pytest(self, line, cell):204        # If config.rewrite_asserts is True assertions are being205        # rewritten by default, do not re-rewrite them.206        if not config.rewrite_asserts:207            self.rewrite_asserts(line, cell)208        else:209            self.shell.run_cell(cell)210        import ipytest211        ipytest.exit_code = run(*shlex.split(line), return_exit_code=True)212    @cell_magic213    def rewrite_asserts(self, line, cell):214        """Rewrite asserts with pytest.215        Usage::216            %%rewrite_asserts217            ...218            # new cell:219            from ipytest import run_pytest220            run_pytest()221        """222        if config.rewrite_asserts:223            warnings.warn("skip rewriting as global rewriting is active")224            return225        with RewriteContext(get_ipython()):...

_config.py

Source:_config.py

...103        key: replace_with_default(keep, args[key], current_config.get(key))104        for key in current_config105    }106    if new_config["rewrite_asserts"] != current_config["rewrite_asserts"]:107        configure_rewrite_asserts(new_config["rewrite_asserts"])108    if new_config["magics"] != current_config["magics"]:109        configure_magics(new_config["magics"])110    current_config.update(new_config)111    return dict(current_config)112def configure_rewrite_asserts(enable):113    global _rewrite_transformer114    from IPython import get_ipython115    from ._impl import RewriteAssertTransformer116    shell = get_ipython()117    if enable:118        assert _rewrite_transformer is None119        _rewrite_transformer = RewriteAssertTransformer()120        _rewrite_transformer.register_with_shell(shell)121    else:122        assert _rewrite_transformer is not None123        _rewrite_transformer.unregister_with_shell(shell)124        _rewrite_transformer = None125def configure_magics(enable):126    from IPython import get_ipython...

apptest2.py

Source:apptest2.py

...29                                """(rootdir, source, fname, name):30                import sys31                sys.path.insert(0, rootdir)32                from ast_rewrite import rewrite_asserts, create_module33                co = rewrite_asserts(source, fname)34                mod = create_module(name, co)35                return mod36            """)37        else:38            w_mod = create_module(space, w_name, fname, source)39        mod_dict = w_mod.getdict(space).unwrap(space)40        items = []41        for name, w_obj in mod_dict.items():42            if not name.startswith('test_'):43                continue44            if not isinstance(w_obj, pypy.interpreter.function.Function):45                continue46            items.append(AppTestFunction(name, self, w_obj))47        items.sort(key=lambda item: item.reportinfo()[:2])...

__init__.py

Source:__init__.py

...86    except SyntaxError:87        # Let this pop up again in the real import.88        mod.config._assertstate.trace("failed to parse: %r" % (mod.fspath,))89        return90    rewrite_asserts(tree)91    try:92        co = compile(tree, str(mod.fspath), "exec")93    except SyntaxError:94        # It's possible that this error is from some bug in the assertion95        # rewriting, but I don't know of a fast way to tell.96        mod.config._assertstate.trace("failed to compile: %r" % (mod.fspath,))97        return98    mod._pyc = _write_pyc(co, mod.fspath)99    mod.config._assertstate.trace("wrote pyc: %r" % (mod._pyc,))100def after_module_import(mod):101    if not hasattr(mod, "_pyc"):102        return103    state = mod.config._assertstate104    try:...

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