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36 lines
1.0 KiB
Python
36 lines
1.0 KiB
Python
"""Test global NaN/Inf JSON protection."""
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import json
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import math
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def test_nan_becomes_null(app):
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"""NaN values must be serialized as null (RFC 8259 compliance)."""
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with app.app_context():
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raw = app.json.dumps({"a": float("nan")})
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parsed = json.loads(raw)
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assert parsed["a"] is None
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def test_inf_becomes_null(app):
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with app.app_context():
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raw = app.json.dumps({"b": float("inf"), "c": float("-inf")})
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parsed = json.loads(raw)
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assert parsed["b"] is None
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assert parsed["c"] is None
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def test_normal_floats_preserved(app):
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with app.app_context():
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raw = app.json.dumps({"x": 42.5, "y": 0.0})
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parsed = json.loads(raw)
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assert parsed["x"] == 42.5
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assert parsed["y"] == 0.0
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def test_nested_nan(app):
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with app.app_context():
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raw = app.json.dumps({"list": [1, float("nan"), 3], "nested": {"v": float("inf")}})
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parsed = json.loads(raw)
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assert parsed["list"] == [1, None, 3]
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assert parsed["nested"]["v"] is None
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