fix: answer range format validation and error message in Numerical input

src/editors/containers/ProblemEditor/components/EditProblemView/AnswerWidget/AnswerOption.jsx

@@ -17,6 +17,7 @@ import { FeedbackBox } from './components/Feedback';
 import * as hooks from './hooks';
 import { ProblemTypeKeys } from '../../../../../data/constants/problem';
 import ExpandableTextArea from '../../../../../sharedComponents/ExpandableTextArea';
+import { answerRangeFormatRegex } from '../../../data/OLXParser';
 
 export const AnswerOption = ({
   answer,
@@ -39,6 +40,11 @@ export const AnswerOption = ({
   const setUnselectedFeedback = hooks.setUnselectedFeedback({ answer, hasSingleAnswer, dispatch });
   const { isFeedbackVisible, toggleFeedback } = hooks.useFeedback(answer);
 
+  const validateAnswerTitle = (value) => {
+    const cleanedValue = value.replace(/^\s+|\s+$/g, '');
+    return !cleanedValue.length || answerRangeFormatRegex.test(cleanedValue);
+  };
+
   const getInputArea = () => {
     if ([ProblemTypeKeys.SINGLESELECT, ProblemTypeKeys.MULTISELECT].includes(problemType)) {
       return (
@@ -64,8 +70,9 @@ export const AnswerOption = ({
       );
     }
     // Return Answer Range View
+    const isValidValue = validateAnswerTitle(answer.title);
     return (
-      <div>
+      <Form.Group isInvalid={!isValidValue}>
         <Form.Control
           as="textarea"
           className="answer-option-textarea text-gray-500 small"
@@ -75,11 +82,15 @@ export const AnswerOption = ({
           onChange={setAnswerTitle}
           placeholder={intl.formatMessage(messages.answerRangeTextboxPlaceholder)}
         />
+        {!isValidValue && (
+          <Form.Control.Feedback type="invalid">
+            <FormattedMessage {...messages.answerRangeErrorText} />
+          </Form.Control.Feedback>
+        )}
         <div className="pgn__form-switch-helper-text">
           <FormattedMessage {...messages.answerRangeHelperText} />
         </div>
-      </div>
-
+      </Form.Group>
     );
   };
 

src/editors/containers/ProblemEditor/components/EditProblemView/AnswerWidget/AnswerOption.test.jsx

@@ -34,7 +34,7 @@ describe('AnswerOption', () => {
   };
   const answerRange = {
     id: 'A',
-    title: 'Answer 1',
+    title: '[2,5]',
     correct: true,
     selectedFeedback: 'selected feedback',
     unselectedFeedback: 'unselected feedback',
@@ -62,6 +62,9 @@ describe('AnswerOption', () => {
     test('snapshot: renders correct option with numeric input problem and answer range', () => {
       expect(shallow(<AnswerOption {...props} problemType="numericalresponse" answer={answerRange} />).snapshot).toMatchSnapshot();
     });
+    test('snapshot: renders incorrect option with numeric input problem and answer range', () => {
+      expect(shallow(<AnswerOption {...props} problemType="numericalresponse" answer={{ ...answerRange, title: '[2.5]' }} />).snapshot).toMatchSnapshot();
+    });
   });
 
   describe('mapStateToProps', () => {

src/editors/containers/ProblemEditor/components/EditProblemView/AnswerWidget/__snapshots__/AnswerOption.test.jsx.snap

@@ -169,7 +169,7 @@ exports[`AnswerOption render snapshot: renders correct option with numeric input
           "id": "A",
           "isAnswerRange": true,
           "selectedFeedback": "selected feedback",
-          "title": "Answer 1",
+          "title": "[2,5]",
           "unselectedFeedback": "unselected feedback",
         }
       }
@@ -181,15 +181,17 @@ exports[`AnswerOption render snapshot: renders correct option with numeric input
   <div
     className="ml-1 flex-grow-1"
   >
-    <div>
+    <Form.Group
+      isInvalid={false}
+    >
       <Form.Control
         as="textarea"
         autoResize={true}
         className="answer-option-textarea text-gray-500 small"
         onChange={[Function]}
         placeholder="Enter an answer range"
         rows={1}
-        value="Answer 1"
+        value="[2,5]"
       />
       <div
         className="pgn__form-switch-helper-text"
@@ -200,7 +202,7 @@ exports[`AnswerOption render snapshot: renders correct option with numeric input
           id="authoring.answerwidget.answer.answerRangeHelperText"
         />
       </div>
-    </div>
+    </Form.Group>
     <Body>
       <injectIntl(ShimmedIntlComponent)
         answer={
@@ -209,7 +211,7 @@ exports[`AnswerOption render snapshot: renders correct option with numeric input
             "id": "A",
             "isAnswerRange": true,
             "selectedFeedback": "selected feedback",
-            "title": "Answer 1",
+            "title": "[2,5]",
             "unselectedFeedback": "unselected feedback",
           }
         }
@@ -322,3 +324,106 @@ exports[`AnswerOption render snapshot: renders correct option with selected unse
   </div>
 </Advanced>
 `;
+
+exports[`AnswerOption render snapshot: renders incorrect option with numeric input problem and answer range 1`] = `
+<Advanced
+  className="answer-option d-flex flex-row justify-content-between flex-nowrap pb-2 pt-2"
+  onToggle={[Function]}
+  open={false}
+>
+  <div
+    className="mr-1 d-flex"
+  >
+    <Checker
+      answer={
+        {
+          "correct": true,
+          "id": "A",
+          "isAnswerRange": true,
+          "selectedFeedback": "selected feedback",
+          "title": "[2.5]",
+          "unselectedFeedback": "unselected feedback",
+        }
+      }
+      disabled={true}
+      hasSingleAnswer={false}
+      setAnswer={[Function]}
+    />
+  </div>
+  <div
+    className="ml-1 flex-grow-1"
+  >
+    <Form.Group
+      isInvalid={true}
+    >
+      <Form.Control
+        as="textarea"
+        autoResize={true}
+        className="answer-option-textarea text-gray-500 small"
+        onChange={[Function]}
+        placeholder="Enter an answer range"
+        rows={1}
+        value="[2.5]"
+      />
+      <Form.Control.Feedback
+        type="invalid"
+      >
+        <FormattedMessage
+          defaultMessage="Error: Invalid range format. Use brackets or parentheses with values separated by a comma."
+          description="Error text describing wrong format of answer ranges"
+          id="authoring.answerwidget.answer.answerRangeErrorText"
+        />
+      </Form.Control.Feedback>
+      <div
+        className="pgn__form-switch-helper-text"
+      >
+        <FormattedMessage
+          defaultMessage="Enter min and max values separated by a comma. Use a bracket to include the number next to it in the range, or a parenthesis to exclude the number. For example, to identify the correct answers as 5, 6, or 7, but not 8, specify [5,8)."
+          description="Helper text describing usage of answer ranges"
+          id="authoring.answerwidget.answer.answerRangeHelperText"
+        />
+      </div>
+    </Form.Group>
+    <Body>
+      <injectIntl(ShimmedIntlComponent)
+        answer={
+          {
+            "correct": true,
+            "id": "A",
+            "isAnswerRange": true,
+            "selectedFeedback": "selected feedback",
+            "title": "[2.5]",
+            "unselectedFeedback": "unselected feedback",
+          }
+        }
+        intl={
+          {
+            "formatMessage": [Function],
+          }
+        }
+        problemType="numericalresponse"
+        setSelectedFeedback={[Function]}
+        setUnselectedFeedback={[Function]}
+      />
+    </Body>
+  </div>
+  <div
+    className="d-flex flex-row flex-nowrap"
+  >
+    <Trigger
+      aria-label="Toggle feedback"
+      className="btn-icon btn-icon-primary btn-icon-md align-items-center"
+    >
+      <Icon
+        alt="Toggle feedback"
+      />
+    </Trigger>
+    <IconButton
+      alt="Delete answer"
+      iconAs="Icon"
+      onClick={[Function]}
+      variant="primary"
+    />
+  </div>
+</Advanced>
+`;

src/editors/containers/ProblemEditor/components/EditProblemView/AnswerWidget/messages.js

@@ -72,6 +72,11 @@ const messages = defineMessages({
     defaultMessage: 'Enter min and max values separated by a comma. Use a bracket to include the number next to it in the range, or a parenthesis to exclude the number. For example, to identify the correct answers as 5, 6, or 7, but not 8, specify [5,8).',
     description: 'Helper text describing usage of answer ranges',
   },
+  answerRangeErrorText: {
+    id: 'authoring.answerwidget.answer.answerRangeErrorText',
+    defaultMessage: 'Error: Invalid range format. Use brackets or parentheses with values separated by a comma.',
+    description: 'Error text describing wrong format of answer ranges',
+  },
 });
 
 export default messages;

src/editors/containers/ProblemEditor/data/OLXParser.js

@@ -50,6 +50,8 @@ export const responseKeys = [
   'choicetextresponse',
 ];
 
+export const answerRangeFormatRegex = /^[([]\s*\d+(\.\d+)?\s*,\s*\d+(\.\d+)?\s*[)\]]$/m;
+
 export const stripNonTextTags = ({ input, tag }) => {
   const stripedTags = {};
   Object.entries(input).forEach(([key, value]) => {
@@ -418,7 +420,7 @@ export class OLXParser {
         [type]: defaultValue,
       };
     }
-    const isAnswerRange = /[([]\s*\d*,\s*\d*\s*[)\]]/gm.test(numericalresponse['@_answer']);
+    const isAnswerRange = answerRangeFormatRegex.test(numericalresponse['@_answer']);
     answers.push({
       id: indexToLetterMap[answers.length],
       title: numericalresponse['@_answer'],

src/editors/containers/ProblemEditor/data/ReactStateOLXParser.js

@@ -413,16 +413,18 @@
             const lowerBoundFloat = Number(numerator) / Number(denominator);
             lowerBoundInt = lowerBoundFloat;
           } else {
-            // these regex replaces remove everything that is not a decimal or positive/negative numer
+            // these regex replaces remove everything that is not a decimal or positive/negative number
             lowerBoundInt = Number(rawLowerBound.replace(/[^0-9-.]/gm, ''));
           }
-          if (rawUpperBound.includes('/')) {
+          if (!rawUpperBound) {
+            upperBoundInt = lowerBoundInt;
+          } else if (rawUpperBound.includes('/')) {
             upperBoundFraction = rawUpperBound.replace(/[^0-9-/]/gm, '');
             const [numerator, denominator] = upperBoundFraction.split('/');
             const upperBoundFloat = Number(numerator) / Number(denominator);
             upperBoundInt = upperBoundFloat;
           } else {
-            // these regex replaces remove everything that is not a decimal or positive/negative numer
+            // these regex replaces remove everything that is not a decimal or positive/negative number
             upperBoundInt = Number(rawUpperBound.replace(/[^0-9-.]/gm, ''));
           }
           if (lowerBoundInt > upperBoundInt) {