tests(pyargus): add tests for parsing expressions

pyargus/tests/test_expr.py

@@ -0,0 +1,16 @@
+import logging
+
+from hypothesis import given
+
+import argus
+
+from .utils.expr_gen import argus_expr
+
+
+@given(spec=argus_expr())
+def test_correct_expr(spec: str) -> None:
+    try:
+        _ = argus.parse_expr(spec)
+    except ValueError as e:
+        logging.critical(f"unable to parse expr: {spec}")
+        raise e