test_background_tasks() — fastapi Function Reference

Architecture documentation for the test_background_tasks() function in test_dependency_contextmanager.py from the fastapi codebase.

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Dependency Diagram

graph TD
  386e2cb4_aaa8_6f87_03aa_9fdf6175273e["test_background_tasks()"]
  952bbb41_0c47_a7fe_aee8_884380d032f7["test_dependency_contextmanager.py"]
  386e2cb4_aaa8_6f87_03aa_9fdf6175273e -->|defined in| 952bbb41_0c47_a7fe_aee8_884380d032f7
  style 386e2cb4_aaa8_6f87_03aa_9fdf6175273e fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

tests/test_dependency_contextmanager.py lines 281–293

def test_background_tasks():
    response = client.get("/context_b_bg")
    data = response.json()
    assert data["context_b"] == "started b"
    assert data["context_a"] == "started a"
    assert data["bg"] == "not set"
    middleware_state = json.loads(response.headers["x-state"])
    assert middleware_state["context_b"] == "started b"
    assert middleware_state["context_a"] == "started a"
    assert middleware_state["bg"] == "not set"
    assert state["context_b"] == "finished b with a: started a"
    assert state["context_a"] == "finished a"
    assert state["bg"] == "bg set - b: started b - a: started a"