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# Copyright (C) 2008, 2009 Michael Trier (mtrier@gmail.com) and contributors
# This module is part of GitPython and is released under the
# 3-Clause BSD License: https://opensource.org/license/bsd-3-clause/
from io import BytesIO
import os.path as osp
from pathlib import Path
import subprocess
import pytest
from git.objects import Blob, Tree
from git.repo import Repo
from git.util import cwd
from test.lib import TestBase, with_rw_directory
from .lib.helper import PathLikeMock, with_rw_repo
class TestTree(TestBase):
    def test_serializable(self):
        # Tree at the given commit contains a submodule as well.
        roottree = self.rorepo.tree("6c1faef799095f3990e9970bc2cb10aa0221cf9c")
        for item in roottree.traverse(ignore_self=False):
            if item.type != Tree.type:
                continue
            # END skip non-trees
            tree = item
            # Trees have no dict.
            self.assertRaises(AttributeError, setattr, tree, "someattr", 1)
            orig_data = tree.data_stream.read()
            orig_cache = tree._cache
            stream = BytesIO()
            tree._serialize(stream)
            assert stream.getvalue() == orig_data
            stream.seek(0)
            testtree = Tree(self.rorepo, Tree.NULL_BIN_SHA, 0, "")
            testtree._deserialize(stream)
            assert testtree._cache == orig_cache
            # Replaces cache, but we make sure of it.
            del testtree._cache
            testtree._deserialize(stream)
        # END for each item in tree
    @with_rw_directory
    def _get_git_ordered_files(self, rw_dir):
        """Get files as git orders them, to compare in test_tree_modifier_ordering."""
        # Create directory contents.
        Path(rw_dir, "file").mkdir()
        for filename in (
            "bin",
            "bin.d",
            "file.to",
            "file.toml",
            "file.toml.bin",
            "file0",
            Path(rw_dir, filename).touch()
        Path(rw_dir, "file", "a").touch()
        with cwd(rw_dir):
            # Prepare the repository.
            subprocess.run(["git", "init", "-q"], check=True)
            subprocess.run(["git", "add", "."], check=True)
            subprocess.run(["git", "commit", "-m", "c1"], check=True)
            # Get git output from which an ordered file list can be parsed.
            rev_parse_command = ["git", "rev-parse", "HEAD^{tree}"]
            tree_hash = subprocess.check_output(rev_parse_command).decode().strip()
            cat_file_command = ["git", "cat-file", "-p", tree_hash]
            cat_file_output = subprocess.check_output(cat_file_command).decode()
        return [line.split()[-1] for line in cat_file_output.split("\n") if line]
    def test_tree_modifier_ordering(self):
        """TreeModifier.set_done() sorts files in the same order git does."""
        git_file_names_in_order = self._get_git_ordered_files()
        hexsha = "6c1faef799095f3990e9970bc2cb10aa0221cf9c"
        roottree = self.rorepo.tree(hexsha)
        blob_mode = Tree.blob_id << 12
        tree_mode = Tree.tree_id << 12
        files_in_desired_order = [
            (blob_mode, "bin"),
            (blob_mode, "bin.d"),
            (blob_mode, "file.to"),
            (blob_mode, "file.toml"),
            (blob_mode, "file.toml.bin"),
            (blob_mode, "file0"),
            (tree_mode, "file"),
        mod = roottree.cache
        for file_mode, file_name in files_in_desired_order:
            mod.add(hexsha, file_mode, file_name)
        # end for each file
        def file_names_in_order():
            return [t[1] for t in files_in_desired_order]
        def names_in_mod_cache():
            a = [t[2] for t in mod._cache]
            here = file_names_in_order()
            return [e for e in a if e in here]
        mod.set_done()
        assert names_in_mod_cache() == git_file_names_in_order, "set_done() performs git-sorting"
    def test_traverse(self):
        root = self.rorepo.tree("0.1.6")
        num_recursive = 0
        all_items = []
        for obj in root.traverse():
            if "/" in obj.path:
                num_recursive += 1
            assert isinstance(obj, (Blob, Tree))
            all_items.append(obj)
        # END for each object
        assert all_items == root.list_traverse()
        # Limit recursion level to 0 - should be same as default iteration.
        assert all_items
        assert "CHANGES" in root
        assert len(list(root)) == len(list(root.traverse(depth=1)))
        # Only choose trees.
        def trees_only(i, _d):
            return i.type == "tree"
        trees = list(root.traverse(predicate=trees_only))
        assert len(trees) == len([i for i in root.traverse() if trees_only(i, 0)])
        # Test prune.
        def lib_folder(t, _d):
            return t.path == "lib"
        pruned_trees = list(root.traverse(predicate=trees_only, prune=lib_folder))
        assert len(pruned_trees) < len(trees)
        # Trees and blobs.
        assert len(set(trees) | set(root.trees)) == len(trees)
        assert len({b for b in root if isinstance(b, Blob)} | set(root.blobs)) == len(root.blobs)
        subitem = trees[0][0]
        assert "/" in subitem.path
        assert subitem.name == osp.basename(subitem.path)
        # Check that at some point the traversed paths have a slash in them.
        found_slash = False
        for item in root.traverse():
            assert osp.isabs(item.abspath)
            if "/" in item.path:
                found_slash = True
            # END check for slash
            # Slashes in paths are supported as well.
            # NOTE: On Python 3, / doesn't work with strings anymore...
            assert root[item.path] == item == root / item.path
        # END for each item
        assert found_slash
    @with_rw_repo("0.3.2.1")
    def test_repo_lookup_string_path(self, rw_repo):
        repo = Repo(rw_repo.git_dir)
        blob = repo.tree() / ".gitignore"
        assert isinstance(blob, Blob)
        assert blob.hexsha == "787b3d442a113b78e343deb585ab5531eb7187fa"
    @with_rw_repo("0.3.2.1")
    def test_repo_lookup_pathlike_path(self, rw_repo):
        repo = Repo(rw_repo.git_dir)
        blob = repo.tree() / PathLikeMock(".gitignore")
        assert isinstance(blob, Blob)
        assert blob.hexsha == "787b3d442a113b78e343deb585ab5531eb7187fa"
    @with_rw_repo("0.3.2.1")
    def test_repo_lookup_invalid_string_path(self, rw_repo):
        repo = Repo(rw_repo.git_dir)
        with pytest.raises(KeyError):
            repo.tree() / "doesnotexist"
    @with_rw_repo("0.3.2.1")
    def test_repo_lookup_invalid_pathlike_path(self, rw_repo):
        repo = Repo(rw_repo.git_dir)
        with pytest.raises(KeyError):
            repo.tree() / PathLikeMock("doesnotexist")
    @with_rw_repo("0.3.2.1")
    def test_repo_lookup_nested_string_path(self, rw_repo):
        repo = Repo(rw_repo.git_dir)
        blob = repo.tree() / "git/__init__.py"
        assert isinstance(blob, Blob)
        assert blob.hexsha == "d87dcbdbb65d2782e14eea27e7f833a209c052f3"
    @with_rw_repo("0.3.2.1")
    def test_repo_lookup_nested_pathlike_path(self, rw_repo):
        repo = Repo(rw_repo.git_dir)
        blob = repo.tree() / PathLikeMock("git/__init__.py")
        assert isinstance(blob, Blob)
        assert blob.hexsha == "d87dcbdbb65d2782e14eea27e7f833a209c052f3"
    @with_rw_repo("0.3.2.1")
    def test_repo_lookup_folder_string_path(self, rw_repo):
        repo = Repo(rw_repo.git_dir)
        tree = repo.tree() / "git"
        assert isinstance(tree, Tree)
        assert tree.hexsha == "ec8ae429156d65afde4bbb3455570193b56f0977"
    @with_rw_repo("0.3.2.1")
    def test_repo_lookup_folder_pathlike_path(self, rw_repo):
        repo = Repo(rw_repo.git_dir)
        tree = repo.tree() / PathLikeMock("git")
        assert isinstance(tree, Tree)
        assert tree.hexsha == "ec8ae429156d65afde4bbb3455570193b56f0977"
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