test_url_processors() — flask Function Reference

Architecture documentation for the test_url_processors() function in test_basic.py from the flask codebase.

Function python ApplicationCore AppLifeCycle calls 1

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ApplicationCore→ AppLifeCycle→ test_url_processors() — flask Function Reference

Dependency Diagram

graph TD
  bdae1a48_2cba_3cd0_b2f4_4a44e829c6ac["test_url_processors()"]
  85bc4fb5_d1d7_a135_020d_69e052c12c0f["test_basic.py"]
  bdae1a48_2cba_3cd0_b2f4_4a44e829c6ac -->|defined in| 85bc4fb5_d1d7_a135_020d_69e052c12c0f
  6ea1611d_2801_3cb5_a5b9_5b6403cc0537["index()"]
  bdae1a48_2cba_3cd0_b2f4_4a44e829c6ac -->|calls| 6ea1611d_2801_3cb5_a5b9_5b6403cc0537
  style bdae1a48_2cba_3cd0_b2f4_4a44e829c6ac fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

tests/test_basic.py lines 1621–1647

def test_url_processors(app, client):
    @app.url_defaults
    def add_language_code(endpoint, values):
        if flask.g.lang_code is not None and app.url_map.is_endpoint_expecting(
            endpoint, "lang_code"
        ):
            values.setdefault("lang_code", flask.g.lang_code)

    @app.url_value_preprocessor
    def pull_lang_code(endpoint, values):
        flask.g.lang_code = values.pop("lang_code", None)

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

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

    @app.route("/foo")
    def something_else():
        return flask.url_for("about", lang_code="en")

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