Function test_new_version_changes_subdirectory

tests/test_subdirectory.py:277–336

(
    tmp_path_factory: pytest.TempPathFactory,
)

def test_new_version_changes_subdirectory(
    tmp_path_factory: pytest.TempPathFactory,
) -> None:
    # Template in v3 changes from one subdirectory to another.
    # Some file evolves also. Sub-project evolves separately.
    # Sub-project is updated. Does that work as expected?
    src, dst = map(tmp_path_factory.mktemp, ("src", "dst"))

    # First, create the template with an initial subdirectory and README inside it
    build_file_tree(
        {
            (src / "copier.yml"): "_subdirectory: subdir1\n",
            (src / "subdir1" / "[[_copier_conf.answers_file]].tmpl"): (
                "[[_copier_answers|to_nice_yaml]]\n"
            ),
            (src / "subdir1" / "README.md"): "upstream version 1\n",
        }
    )
    with local.cwd(src):
        git_init("hello template")

    # Generate the project a first time, assert the README exists
    copier.run_copy(str(src), dst, defaults=True, overwrite=True)
    assert (dst / "README.md").exists()

    # Start versioning the generated project
    with local.cwd(dst):
        git_init("hello project")

        # After first commit, change the README, commit again
        Path("README.md").write_text("downstream version 1\n")
        git("commit", "-am", "updated readme")

    # Now change the template
    with local.cwd(src):
        # Update the README
        Path("subdir1", "README.md").write_text("upstream version 2\n")

        # Rename the subdirectory
        Path("subdir1").rename("subdir2")

        # Update copier.yml to reflect this change
        Path("copier.yml").write_text("_subdirectory: subdir2\n")

        # Commit the changes
        git("add", ".", "-A")
        git("commit", "-m", "changed from subdir1 to subdir2")

    # Finally, update the generated project
    copier.run_copy(
        str(src), dst, defaults=True, overwrite=True, skip_if_exists=["README.md"]
    )

    # Assert that the README still exists, and was NOT force updated
    assert (dst / "README.md").exists()
    assert (dst / "README.md").read_text() == "downstream version 1\n"

    # Also assert the subdirectories themselves were not rendered