test_default_error_handler() — flask Function Reference

Architecture documentation for the test_default_error_handler() function in test_user_error_handler.py from the flask codebase.

Function python ApplicationCore AppLifeCycle

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ApplicationCore→ AppLifeCycle→ test_default_error_handler() — flask Function Reference

Dependency Diagram

graph TD
  f3070812_5410_0b9e_f347_7e04d10e1e63["test_default_error_handler()"]
  f3be1606_1a20_1a1b_2703_48b5b295bc8d["test_user_error_handler.py"]
  f3070812_5410_0b9e_f347_7e04d10e1e63 -->|defined in| f3be1606_1a20_1a1b_2703_48b5b295bc8d
  style f3070812_5410_0b9e_f347_7e04d10e1e63 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

tests/test_user_error_handler.py lines 163–214

def test_default_error_handler():
    bp = flask.Blueprint("bp", __name__)

    @bp.errorhandler(HTTPException)
    def bp_exception_handler(e):
        assert isinstance(e, HTTPException)
        assert isinstance(e, NotFound)
        return "bp-default"

    @bp.errorhandler(Forbidden)
    def bp_forbidden_handler(e):
        assert isinstance(e, Forbidden)
        return "bp-forbidden"

    @bp.route("/undefined")
    def bp_registered_test():
        raise NotFound()

    @bp.route("/forbidden")
    def bp_forbidden_test():
        raise Forbidden()

    app = flask.Flask(__name__)

    @app.errorhandler(HTTPException)
    def catchall_exception_handler(e):
        assert isinstance(e, HTTPException)
        assert isinstance(e, NotFound)
        return "default"

    @app.errorhandler(Forbidden)
    def catchall_forbidden_handler(e):
        assert isinstance(e, Forbidden)
        return "forbidden"

    @app.route("/forbidden")
    def forbidden():
        raise Forbidden()

    @app.route("/slash/")
    def slash():
        return "slash"

    app.register_blueprint(bp, url_prefix="/bp")

    c = app.test_client()
    assert c.get("/bp/undefined").data == b"bp-default"
    assert c.get("/bp/forbidden").data == b"bp-forbidden"
    assert c.get("/undefined").data == b"default"
    assert c.get("/forbidden").data == b"forbidden"
    # Don't handle RequestRedirect raised when adding slash.
    assert c.get("/slash", follow_redirects=True).data == b"slash"