test_errorhandler_precedence() — flask Function Reference

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

Function python ApplicationCore AppLifeCycle

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ApplicationCore→ AppLifeCycle→ test_errorhandler_precedence() — flask Function Reference

Dependency Diagram

graph TD
  bfeae510_2aac_0eac_532d_6af24e691211["test_errorhandler_precedence()"]
  85bc4fb5_d1d7_a135_020d_69e052c12c0f["test_basic.py"]
  bfeae510_2aac_0eac_532d_6af24e691211 -->|defined in| 85bc4fb5_d1d7_a135_020d_69e052c12c0f
  style bfeae510_2aac_0eac_532d_6af24e691211 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

tests/test_basic.py lines 999–1029

def test_errorhandler_precedence(app, client):
    class E1(Exception):
        pass

    class E2(Exception):
        pass

    class E3(E1, E2):
        pass

    @app.errorhandler(E2)
    def handle_e2(e):
        return "E2"

    @app.errorhandler(Exception)
    def handle_exception(e):
        return "Exception"

    @app.route("/E1")
    def raise_e1():
        raise E1

    @app.route("/E3")
    def raise_e3():
        raise E3

    rv = client.get("/E1")
    assert rv.data == b"Exception"

    rv = client.get("/E3")
    assert rv.data == b"E2"