def METHOD_NAME(self):
    """
    Test for columns with forbidden filenames
    """
    X, y = datasets.make_regression(n_samples=100, n_features=5)
    X = pd.DataFrame(X, columns=[f"f_{i}" for i in range(X.shape[1])])
    X.rename({"f_0": "ff*", "f_1": "fg/"}, axis=1, inplace=True)
    y = pd.Series(y, name="class")
    results_path = self.automl_dir
    EDA.extensive_eda(X, y, results_path)
    result_files = os.listdir(results_path)
    for col in X.columns:
        self.assertTrue(EDA.plot_fname(f"{col}_target") in result_files)
    self.assertTrue("heatmap.png" in result_files)
    self.assertTrue("Extensive_EDA.md" in result_files)
    self.tearDown()