test_flash_signal() — flask Function Reference

Architecture documentation for the test_flash_signal() function in test_signals.py from the flask codebase.

Function python ApplicationCore AppLifeCycle

Entity Profile

ApplicationCore→ AppLifeCycle→ test_flash_signal() — flask Function Reference

Dependency Diagram

graph TD
  3912594e_71f3_11a4_15b8_4d437f238f75["test_flash_signal()"]
  a3094b63_9b33_613c_f8a0_440ab19800e5["test_signals.py"]
  3912594e_71f3_11a4_15b8_4d437f238f75 -->|defined in| a3094b63_9b33_613c_f8a0_440ab19800e5
  style 3912594e_71f3_11a4_15b8_4d437f238f75 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

tests/test_signals.py lines 139–160

def test_flash_signal(app):
    @app.route("/")
    def index():
        flask.flash("This is a flash message", category="notice")
        return flask.redirect("/other")

    recorded = []

    def record(sender, message, category):
        recorded.append((message, category))

    flask.message_flashed.connect(record, app)
    try:
        client = app.test_client()
        with client.session_transaction():
            client.get("/")
            assert len(recorded) == 1
            message, category = recorded[0]
            assert message == "This is a flash message"
            assert category == "notice"
    finally:
        flask.message_flashed.disconnect(record, app)