Parse dashboard operators independently of quoted filter values

tests/test_dashboard_regressions.py

@@ -0,0 +1,32 @@
+from typing import Any
+
+import pytest
+
+from great_ai.deploy.routes.dashboard.get_filter_from_datatable import (
+    get_filter_from_datatable,
+)
+
+
+@pytest.mark.parametrize(
+    "expression, operator, value",
+    [
+        ('{value} contains "a=b"', "contains", "a=b"),
+        ("{value} eq 7", "=", 7),
+        ("{value} ge 2.5", ">=", 2.5),
+        ('{value} contains ""', "contains", ""),
+        (r"{value} contains 'it\'s > 2'", "contains", "it's > 2"),
+    ],
+)
+def test_dashboard_filter_grammar(expression: str, operator: str, value: Any) -> None:
+    result = get_filter_from_datatable(expression)
+    assert result is not None
+    assert result.property == "value"
+    assert result.operator == operator
+    assert result.value == value
+
+
+@pytest.mark.parametrize(
+    "expression", ["{value} > ", '{value} contains "unfinished', "invalid"]
+)
+def test_incomplete_filters_are_ignored(expression: str) -> None:
+    assert get_filter_from_datatable(expression) is None