test_app_url_processors() — flask Function Reference

Architecture documentation for the test_app_url_processors() function in test_blueprints.py from the flask codebase.

Function python ApplicationCore AppLifeCycle

Entity Profile

ApplicationCore→ AppLifeCycle→ test_app_url_processors() — flask Function Reference

Dependency Diagram

graph TD
  f5bd6678_5292_f90b_5f74_096c7e3f390f["test_app_url_processors()"]
  4366a441_d387_52f9_ec8d_1c41c71c00a8["test_blueprints.py"]
  f5bd6678_5292_f90b_5f74_096c7e3f390f -->|defined in| 4366a441_d387_52f9_ec8d_1c41c71c00a8
  style f5bd6678_5292_f90b_5f74_096c7e3f390f fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

tests/test_blueprints.py lines 847–871

def test_app_url_processors(app, client):
    bp = flask.Blueprint("bp", __name__)

    # Register app-wide url defaults and preprocessor on blueprint
    @bp.app_url_defaults
    def add_language_code(endpoint, values):
        values.setdefault("lang_code", flask.g.lang_code)

    @bp.app_url_value_preprocessor
    def pull_lang_code(endpoint, values):
        flask.g.lang_code = values.pop("lang_code")

    # Register route rules at the app level
    @app.route("/<lang_code>/")
    def index():
        return flask.url_for("about")

    @app.route("/<lang_code>/about")
    def about():
        return flask.url_for("index")

    app.register_blueprint(bp)

    assert client.get("/de/").data == b"/de/about"
    assert client.get("/de/about").data == b"/de/"