zero division error in get_std_error

[mdkbmi]

=================================================== test session starts ===================================================
platform darwin -- Python 3.13.1, pytest-8.3.4, pluggy-1.5.0 -- /Users/danishkarlin/miniforge3/envs/tidylinreg/bin/python
cachedir: .pytest_cache
rootdir: /Users/danishkarlin/Library/CloudStorage/OneDrive-UBC/MDS/4-524 Collaborative Software Development/tidylinreg
configfile: pyproject.toml
plugins: cov-6.0.0, anyio-4.8.0
collected 59 items                                                                                                        

tests/test_get_ci.py::test_is_model_fitted PASSED                                                                   [  1%]
tests/test_get_ci.py::test_error_empty_x PASSED                                                                     [  3%]
tests/test_get_ci.py::test_error_empty_y PASSED                                                                     [  5%]
tests/test_get_ci.py::test_alpha_is_zero PASSED                                                                     [  6%]
tests/test_get_ci.py::test_alpha_is_one PASSED                                                                      [  8%]
tests/test_get_ci.py::test_alpha_below_zero PASSED                                                                  [ 10%]
tests/test_get_ci.py::test_alpha_above_one PASSED                                                                   [ 11%]
tests/test_get_ci.py::test_ci_values PASSED                                                                         [ 13%]
tests/test_get_std_error.py::test_is_model_fitted PASSED                                                            [ 15%]
tests/test_get_std_error.py::test_empty_x PASSED                                                                    [ 16%]
tests/test_get_std_error.py::test_empty_y PASSED                                                                    [ 18%]
tests/test_get_std_error.py::test_calculate_std_error PASSED                                                        [ 20%]
tests/test_get_std_error.py::test_calculate_std_error_zero PASSED                                                   [ 22%]
tests/test_summary.py::test_summary_no_fit PASSED                                                                   [ 23%]
tests/test_summary.py::test_summary_basic PASSED                                                                    [ 25%]
tests/test_summary.py::test_summary_with_ci PASSED                                                                  [ 27%]
tests/test_summary.py::test_summary_output_without_ci PASSED                                                        [ 28%]
tests/test_summary.py::test_summary_invalid_alpha PASSED                                                            [ 30%]
tests/test_summary.py::test_summary_values PASSED                                                                   [ 32%]
tests/test_tidylinreg.py::test_fit_params[X0-y0-expected_params0] PASSED                                            [ 33%]
tests/test_tidylinreg.py::test_fit_params[X1-y1-expected_params1] PASSED                                            [ 35%]
tests/test_tidylinreg.py::test_fit_params[X2-y2-expected_params2] PASSED                                            [ 37%]
tests/test_tidylinreg.py::test_fit_params[X3-y3-expected_params3] PASSED                                            [ 38%]
tests/test_tidylinreg.py::test_fit_params[X4-y4-expected_params4] PASSED                                            [ 40%]
tests/test_tidylinreg.py::test_fit_params[X5-y5-expected_params5] PASSED                                            [ 42%]
tests/test_tidylinreg.py::test_fit_params[X6-y6-expected_params6] PASSED                                            [ 44%]
tests/test_tidylinreg.py::test_fit_params[X7-y7-expected_params7] PASSED                                            [ 45%]
tests/test_tidylinreg.py::test_fit_throw_error[X0-y0-TypeError] PASSED                                              [ 47%]
tests/test_tidylinreg.py::test_fit_throw_error[X1-y1-TypeError] PASSED                                              [ 49%]
tests/test_tidylinreg.py::test_fit_throw_error[X2-y2-ValueError] PASSED                                             [ 50%]
tests/test_tidylinreg.py::test_fit_throw_error[X3-y3-ValueError] PASSED                                             [ 52%]
tests/test_tidylinreg.py::test_fit_throw_error[X4-y4-ValueError] PASSED                                             [ 54%]
tests/test_tidylinreg.py::test_fit_throw_error[X5-y5-ValueError] PASSED                                             [ 55%]
tests/test_tidylinreg.py::test_fit_throw_error[X6-y6-ValueError] PASSED                                             [ 57%]
tests/test_tidylinreg.py::test_fit_throw_error[X7-y7-ValueError] PASSED                                             [ 59%]
tests/test_tidylinreg.py::test_fit_throw_error[X8-y8-ValueError] PASSED                                             [ 61%]
tests/test_tidylinreg.py::test_fit_throw_error[X9-y9-ValueError] PASSED                                             [ 62%]
tests/test_tidylinreg.py::test_fit_throw_error[X10-y10-ValueError] PASSED                                           [ 64%]
tests/test_tidylinreg.py::test_predict[X_fit0-y_fit0-X_test0-expected_predictions0] PASSED                          [ 66%]
tests/test_tidylinreg.py::test_predict[X_fit1-y_fit1-X_test1-expected_predictions1] PASSED                          [ 67%]
tests/test_tidylinreg.py::test_predict[X_fit2-y_fit2-X_test2-expected_predictions2] PASSED                          [ 69%]
tests/test_tidylinreg.py::test_predict[X_fit3-y_fit3-X_test3-expected_predictions3] PASSED                          [ 71%]
tests/test_tidylinreg.py::test_predict_throw_error PASSED                                                           [ 72%]
tests/test_tidylinreg.py::test_get_test_statistic[params0-sd0-expected_t0] PASSED                                   [ 74%]
tests/test_tidylinreg.py::test_get_test_statistic[params1-sd1-expected_t1] PASSED                                   [ 76%]
tests/test_tidylinreg.py::test_get_test_statistic[params2-sd2-expected_t2] PASSED                                   [ 77%]
tests/test_tidylinreg.py::test_get_test_statistic[params3-sd3-expected_t3] PASSED                                   [ 79%]
tests/test_tidylinreg.py::test_get_test_statistic[params4-sd4-expected_t4] PASSED                                   [ 81%]
tests/test_tidylinreg.py::test_get_test_statistic[params5-sd5-expected_t5] PASSED                                   [ 83%]
tests/test_tidylinreg.py::test_get_test_statistic_error[params0-sd0-ValueError] PASSED                              [ 84%]
tests/test_tidylinreg.py::test_get_test_statistic_error[params1-sd1-ValueError] PASSED                              [ 86%]
tests/test_tidylinreg.py::test_get_test_statistic_error[params2-sd2-ValueError] PASSED                              [ 88%]
tests/test_tidylinreg.py::test_get_pvalues[test_statistic0-20-expected_p0] PASSED                                   [ 89%]
tests/test_tidylinreg.py::test_get_pvalues[test_statistic1-1000-expected_p1] PASSED                                 [ 91%]
tests/test_tidylinreg.py::test_get_pvalues[test_statistic2-20-expected_p2] PASSED                                   [ 93%]
tests/test_tidylinreg.py::test_get_pvalues[test_statistic3-4-expected_p3] PASSED                                    [ 94%]
tests/test_tidylinreg.py::test_get_pvalues[test_statistic4-1000000-expected_p4] PASSED                              [ 96%]
tests/test_tidylinreg.py::test_get_pvalues_error[test_statistic0-2-3-ValueError] PASSED                             [ 98%]
tests/test_tidylinreg.py::test_get_pvalues_error[None-20-2-TypeError] PASSED                                        [100%]

==================================================== warnings summary =====================================================
tests/test_summary.py::test_summary_basic
tests/test_summary.py::test_summary_with_ci
tests/test_summary.py::test_summary_output_without_ci
tests/test_summary.py::test_summary_values
  /Users/danishkarlin/Library/CloudStorage/OneDrive-UBC/MDS/4-524 Collaborative Software Development/tidylinreg/src/tidylinreg/tidylinreg.py:175: RuntimeWarning: divide by zero encountered in divide
    self.std_error = np.sqrt(mean_sq_error / sum_sq_deviation_x)

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
============================================= 59 passed, 4 warnings in 0.79s ==============================================