12679af141523fc96e446656e41bd877ac7108ab,linearmodels/tests/panel/test_firstdifference_ols.py,,test_firstdifference_ols_weighted,#Any#,55

Before Change

    dx = dx.loc[~drop]
    sw = sw.loc[~drop]

    res2 = IV2SLS(dy, dx, None, None, weights=sw).fit("unadjusted")
    assert_results_equal(res, res2)


def test_first_difference_errors(data):

After Change

    dx = dx.loc[~drop]
    sw = sw.loc[~drop]

    ols_mod = IV2SLS(dy, dx, None, None, weights=sw)
    ols_res = ols_mod.fit("unadjusted")
    assert_results_equal(res, ols_res)

    res = mod.fit(cov_type="robust")
    ols_res = ols_mod.fit("robust")
    assert_results_equal(res, ols_res)

    clusters = mod.dependent.dataframe.copy()
    for entity in mod.dependent.entities:
        clusters.loc[entity] = np.random.randint(9)

    ols_clusters = clusters.copy()
    index = mod.dependent.first_difference().dataframe.index
    ols_clusters = ols_clusters.loc[index]

    res = mod.fit(cov_type="clustered", clusters=clusters)
    ols_res = ols_mod.fit(cov_type="clustered", clusters=ols_clusters)
    assert_results_equal(res, ols_res)


def test_first_difference_errors(data):

Instances