test_before_render_template() — flask Function Reference

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

Function python ApplicationCore AppLifeCycle

Entity Profile

ApplicationCore→ AppLifeCycle→ test_before_render_template() — flask Function Reference

Dependency Diagram

graph TD
  e5f5dac7_7690_dcb2_1ac0_afac298e40bb["test_before_render_template()"]
  a3094b63_9b33_613c_f8a0_440ab19800e5["test_signals.py"]
  e5f5dac7_7690_dcb2_1ac0_afac298e40bb -->|defined in| a3094b63_9b33_613c_f8a0_440ab19800e5
  style e5f5dac7_7690_dcb2_1ac0_afac298e40bb fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

tests/test_signals.py lines 25–47

def test_before_render_template():
    app = flask.Flask(__name__)

    @app.route("/")
    def index():
        return flask.render_template("simple_template.html", whiskey=42)

    recorded = []

    def record(sender, template, context):
        context["whiskey"] = 43
        recorded.append((template, context))

    flask.before_render_template.connect(record, app)
    try:
        rv = app.test_client().get("/")
        assert len(recorded) == 1
        template, context = recorded[0]
        assert template.name == "simple_template.html"
        assert context["whiskey"] == 43
        assert rv.data == b"<h1>43</h1>"
    finally:
        flask.before_render_template.disconnect(record, app)