test_template_filter() — flask Function Reference

Architecture documentation for the test_template_filter() function in test_blueprints.py from the flask codebase.

Function python ApplicationCore AppLifeCycle

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ApplicationCore→ AppLifeCycle→ test_template_filter() — flask Function Reference

Dependency Diagram

graph TD
  d9f355df_6913_0e96_cc90_477c664adc81["test_template_filter()"]
  4366a441_d387_52f9_ec8d_1c41c71c00a8["test_blueprints.py"]
  d9f355df_6913_0e96_cc90_477c664adc81 -->|defined in| 4366a441_d387_52f9_ec8d_1c41c71c00a8
  style d9f355df_6913_0e96_cc90_477c664adc81 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

tests/test_blueprints.py lines 362–396

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

    @bp.app_template_filter()
    def my_reverse(s):
        return s[::-1]

    @bp.app_template_filter
    def my_reverse_2(s):
        return s[::-1]

    @bp.app_template_filter("my_reverse_custom_name_3")
    def my_reverse_3(s):
        return s[::-1]

    @bp.app_template_filter(name="my_reverse_custom_name_4")
    def my_reverse_4(s):
        return s[::-1]

    app.register_blueprint(bp, url_prefix="/py")
    assert "my_reverse" in app.jinja_env.filters.keys()
    assert app.jinja_env.filters["my_reverse"] == my_reverse
    assert app.jinja_env.filters["my_reverse"]("abcd") == "dcba"

    assert "my_reverse_2" in app.jinja_env.filters.keys()
    assert app.jinja_env.filters["my_reverse_2"] == my_reverse_2
    assert app.jinja_env.filters["my_reverse_2"]("abcd") == "dcba"

    assert "my_reverse_custom_name_3" in app.jinja_env.filters.keys()
    assert app.jinja_env.filters["my_reverse_custom_name_3"] == my_reverse_3
    assert app.jinja_env.filters["my_reverse_custom_name_3"]("abcd") == "dcba"

    assert "my_reverse_custom_name_4" in app.jinja_env.filters.keys()
    assert app.jinja_env.filters["my_reverse_custom_name_4"] == my_reverse_4
    assert app.jinja_env.filters["my_reverse_custom_name_4"]("abcd") == "dcba"