def test_view_of_view(matrix_type, subset_func, subset_func2):
    adata = gen_adata((30, 15), X_type=matrix_type)
    adata.raw = adata
    if subset_func is single_subset:
        pytest.xfail("Other subset generating functions have trouble with this")
    var_s1 = subset_func(adata.var_names, min_size=4)
    var_view1 = adata[:, var_s1]
    var_s2 = subset_func2(var_view1.var_names)
    var_view2 = var_view1[:, var_s2]
    assert var_view2._adata_ref is adata
    obs_s1 = subset_func(adata.obs_names, min_size=4)
    obs_view1 = adata[obs_s1, :]
    obs_s2 = subset_func2(obs_view1.obs_names)
    assert adata[obs_s1, :][:, var_s1][obs_s2, :]._adata_ref is adata

    view_of_actual_copy = adata[:, var_s1].copy()[obs_s1, :].copy()[:, var_s2].copy()

    view_of_view_copy = adata[:, var_s1][obs_s1, :][:, var_s2].copy()

    assert_equal(view_of_actual_copy, view_of_view_copy, exact=True)
def install_links(self):
        """Add symlinks into bin/, lib/ (eg, for other applications)"""
        # Make build log visible - it contains OpenFOAM-specific information
        with working_dir(self.projectdir):
            os.symlink(
                join_path(os.path.relpath(self.install_log_path)),
                join_path('log.' + str(self.foam_arch)))

        if not self.config['link']:
            return

        # ln -s platforms/linux64GccXXX/lib lib
        with working_dir(self.projectdir):
            if os.path.isdir(self.archlib):
                os.symlink(self.archlib, 'lib')

        # (cd bin && ln -s ../platforms/linux64GccXXX/bin/* .)
        with working_dir(join_path(self.projectdir, 'bin')):
            for f in [
                f for f in glob.glob(join_path('..', self.archbin, "*"))
                if os.path.isfile(f)
            ]:
                os.symlink(f, os.path.basename(f))