feat(numericalInput): fix input types tests

Author: jesusbalderramawgu

xmodule/capa/inputtypes.py

@@ -1302,15 +1302,20 @@ def preview_formcalc(self, get):
         # TODO add references to valid variables and functions
         # At some point, we might want to mark invalid variables as red
         # or something, and this is where we would need to pass those in.
-        from xmodule.capa_block import ProblemBlock
-        numeric_result = ProblemBlock.preview_numeric_input(formula)
-        # Map results into the correct format
-        result["preview"] = numeric_result["preview"]
-        if numeric_result["error"]:
-            result["error"] = numeric_result["error"]
-        # if formula is invalid return formula
-        if not numeric_result["is_valid"]:
-            result["formula"] = formula
+        try:
+            from xmodule.capa_block import ProblemBlock
+            numeric_result = ProblemBlock.preview_numeric_input(formula)
+            # Map results into the correct format
+            result["preview"] = numeric_result["preview"]
+            if numeric_result["error"]:
+                result["error"] = numeric_result["error"]
+            # if formula is invalid return formula
+            if not numeric_result["is_valid"]:
+                result["formula"] = formula
+        except Exception:  # lint-amnesty, pylint: disable=broad-except
+            log.warning("Error while previewing formula", exc_info=True)
+            result["error"] = _("Error while rendering preview")
+            return result
 
         return result
 

xmodule/capa/tests/test_inputtypes.py

@@ -1361,7 +1361,7 @@ def test_ajax_parse_err(self):
         With parse errors, FormulaEquationInput should give an error message
         """
         # Simulate answering a problem that raises the exception
-        with patch("xmodule.capa.inputtypes.latex_preview") as mock_preview:
+        with patch('xmodule.capa_block.ProblemBlock.preview_numeric_input') as mock_preview:
             mock_preview.side_effect = ParseException("Oopsie")
             response = self.the_input.handle_ajax(
                 "preview_formcalc",
@@ -1379,7 +1379,7 @@ def test_ajax_other_err(self, mock_log):
         """
         With other errors, test that FormulaEquationInput also logs it
         """
-        with patch("xmodule.capa.inputtypes.latex_preview") as mock_preview:
+        with patch('xmodule.capa_block.ProblemBlock.preview_numeric_input') as mock_preview:
             mock_preview.side_effect = Exception()
             response = self.the_input.handle_ajax(
                 "preview_formcalc",