def test_view_mixin_copies_data(adata, array_type: type, attr):
    N = 100
    adata = ad.AnnData(
        obs=pd.DataFrame(index=np.arange(N)), var=pd.DataFrame(index=np.arange(N))
    )

    X = array_type(sparse.eye(N, N).multiply(np.arange(1, N + 1)))
    if attr == "X":
        adata.X = X
    else:
        getattr(adata, attr)["arr"] = X

    view = adata[:50]

    if attr == "X":
        arr_view = view.X
    else:
        arr_view = getattr(view, attr)["arr"]

    arr_view_copy = arr_view.copy()

    if sparse.issparse(X):
        assert not np.shares_memory(arr_view.indices, arr_view_copy.indices)
        assert not np.shares_memory(arr_view.indptr, arr_view_copy.indptr)
        assert not np.shares_memory(arr_view.data, arr_view_copy.data)

        arr_view_copy.data[0] = -5
        assert not np.array_equal(arr_view_copy.data, arr_view.data)
    else:
        assert not np.shares_memory(arr_view, arr_view_copy)

        arr_view_copy[0, 0] = -5
        assert not np.array_equal(arr_view_copy, arr_view)
def _donormalize(patterns, default, root, cwd, auditor, warn):
    """Convert 'kind:pat' from the patterns list to tuples with kind and
    normalized and rooted patterns and with listfiles expanded."""
    kindpats = []
    for kind, pat in [_patsplit(p, default) for p in patterns]:
        if kind in cwdrelativepatternkinds:
            pat = pathutil.canonpath(root, cwd, pat, auditor)
        elif kind in ("relglob", "path", "rootfilesin"):
            pat = util.normpath(pat)
        elif kind in ("listfile", "listfile0"):
            try:
                files = decodeutf8(util.readfile(pat))
                if kind == "listfile0":
                    files = files.split("\0")
                else:
                    files = files.splitlines()
                files = [f for f in files if f]
            except EnvironmentError:
                raise error.Abort(_("unable to read file list (%s)") % pat)
            for k, p, source in _donormalize(files, default, root, cwd, auditor, warn):
                kindpats.append((k, p, pat))
            continue
        elif kind == "include":
            try:
                fullpath = os.path.join(root, util.localpath(pat))
                includepats = readpatternfile(fullpath, warn)
                for k, p, source in _donormalize(
                    includepats, default, root, cwd, auditor, warn
                ):
                    kindpats.append((k, p, source or pat))
            except error.Abort as inst:
                raise error.Abort("%s: %s" % (pat, inst[0]))
            except IOError as inst:
                if warn:
                    warn(
                        _("skipping unreadable pattern file '%s': %s\n")
                        % (pat, inst.strerror)
                    )
            continue
        # else: re or relre - which cannot be normalized
        kindpats.append((kind, pat, ""))
    return kindpats