Overhaul of our check-in features (#1647)

src/tests/helpers/test_jsonlogic.py

@@ -0,0 +1,34 @@
+import json
+import os
+
+import pytest
+
+from pretix.helpers.jsonlogic import Logic
+
+with open(os.path.join(os.path.dirname(__file__), 'jsonlogic-tests.json'), 'r') as f:
+    data = json.load(f)
+    params = [r for r in data if isinstance(r, list)]
+
+params += [
+    ({"==": [True, True]}, {}, True),
+    ({"==": [True, False]}, {}, False),
+    ({"<": [0, "foo"]}, {}, False),
+    ({"+": [3.4, "0.1"]}, {}, 3.5),
+    ({"missing_some": [0, {'var': ''}]}, {}, []),
+]
+
+
+@pytest.mark.parametrize("logic,data,expected", params)
+def test_shared_tests(logic, data, expected):
+    assert Logic().apply(logic, data) == expected
+
+
+def test_unknown_operator():
+    with pytest.raises(ValueError):
+        assert Logic().apply({'unknownOp': []}, {})
+
+
+def test_custom_operation():
+    logic = Logic()
+    logic.add_operation('double', lambda a: a * 2)
+    assert logic.apply({'double': [{'var': 'value'}]}, {'value': 3}) == 6