Add the QTI associate interaction plugin

contentcuration/contentcuration/frontend/channelEdit/pages/qtiDemoData.js

@@ -215,6 +215,50 @@ export const ORDERING_ITEM_XML = `<?xml version="1.0" encoding="UTF-8"?>
   </qti-item-body>
 </qti-assessment-item>`;
 
+/**
+ * Demo item 7: associate interaction — learner connects countries to capitals.
+ * Uses cardinality="multiple" and base-type="pair" per QTI 3.0 §3.2.13.
+ */
+export const ASSOCIATE_ITEM_XML = `<?xml version="1.0" encoding="UTF-8"?>
+<qti-assessment-item
+  xmlns="http://www.imsglobal.org/xsd/imsqtiasi_v3p0"
+  identifier="item-associate"
+  title="Match each country with its capital city"
+  adaptive="false"
+  time-dependent="false"
+  xml:lang="en"
+>
+  <qti-response-declaration
+    identifier="RESPONSE"
+    cardinality="multiple"
+    base-type="pair"
+  >
+    <qti-correct-response>
+      <qti-value>choice_kenya choice_nairobi</qti-value>
+      <qti-value>choice_japan choice_tokyo</qti-value>
+      <qti-value>choice_brazil choice_brasilia</qti-value>
+    </qti-correct-response>
+  </qti-response-declaration>
+
+  <qti-item-body>
+    <qti-associate-interaction
+      response-identifier="RESPONSE"
+      shuffle="true"
+      max-associations="3"
+    >
+      <qti-prompt><p>Match each country with its capital city:</p></qti-prompt>
+      <qti-simple-associable-choice identifier="choice_kenya" match-max="1">Kenya</qti-simple-associable-choice>
+      <qti-simple-associable-choice identifier="choice_nairobi" match-max="1">Nairobi</qti-simple-associable-choice>
+      <qti-simple-associable-choice identifier="choice_japan" match-max="1">Japan</qti-simple-associable-choice>
+      <qti-simple-associable-choice identifier="choice_tokyo" match-max="1">Tokyo</qti-simple-associable-choice>
+      <qti-simple-associable-choice identifier="choice_brazil" match-max="1">Brazil</qti-simple-associable-choice>
+      <qti-simple-associable-choice identifier="choice_brasilia" match-max="1">Brasília</qti-simple-associable-choice>
+      <qti-simple-associable-choice identifier="choice_mombasa" match-max="1">Mombasa</qti-simple-associable-choice>
+      <qti-simple-associable-choice identifier="choice_osaka" match-max="1">Osaka</qti-simple-associable-choice>
+    </qti-associate-interaction>
+  </qti-item-body>
+</qti-assessment-item>`;
+
 /**
  * Hardcoded items covering different states:
  *  - item-1: single-select choice interaction
@@ -223,6 +267,7 @@ export const ORDERING_ITEM_XML = `<?xml version="1.0" encoding="UTF-8"?>
  *  - item-text-entry: string text-entry with case-sensitive answers
  *  - item-free-response: free-response text-entry (no correct answer)
  *  - item-ordering: ordering interaction (planets by distance from the Sun)
+ *  - item-associate: associate interaction (countries to capitals, with distractors)
  */
 export const INITIAL_ASSESSMENTS = [
   {
@@ -255,4 +300,9 @@ export const INITIAL_ASSESSMENTS = [
     type: AssessmentItemTypes.QTI,
     raw_data: ORDERING_ITEM_XML,
   },
+  {
+    assessment_id: 'demo-item-associate',
+    type: AssessmentItemTypes.QTI,
+    raw_data: ASSOCIATE_ITEM_XML,
+  },
 ];

contentcuration/contentcuration/frontend/shared/views/QTIEditor/components/QTIItemEditor/__tests__/QTIItemEditor.spec.js

@@ -12,6 +12,7 @@ import {
   NO_INTERACTION_ITEM_DOCUMENT,
   CHOICE_ITEM_DOCUMENT_WITH_HINTS,
   NO_INTERACTION_ITEM_WITH_HINTS,
+  VALID_ASSOCIATE_ITEM_DOCUMENT,
 } from '../../../utils/testingFixtures';
 
 jest.mock('shared/views/TipTapEditor/TipTapEditor/TipTapEditor');
@@ -29,6 +30,9 @@ const {
   unsupportedItemMessage$,
   incompleteItemIndicatorLabel$,
   hintsLabel$,
+  associateLabel$,
+  unknownTypeLabel$,
+  responsePoolLabel$,
 } = qtiEditorStrings;
 
 const defaultProps = {
@@ -291,6 +295,29 @@ describe('QTIItemEditor', () => {
     });
   });
 
+  describe('associate interaction', () => {
+    const renderAssociateItem = () =>
+      renderComponent({
+        item: {
+          assessment_id: 'test-item-id',
+          type: AssessmentItemTypes.QTI,
+          raw_data: VALID_ASSOCIATE_ITEM_DOCUMENT,
+        },
+      });
+
+    test('names the associate question type rather than falling back to unknown', async () => {
+      renderAssociateItem();
+      expect(await screen.findByText(associateLabel$(), { exact: false })).toBeInTheDocument();
+      expect(screen.queryByText(unknownTypeLabel$(), { exact: false })).not.toBeInTheDocument();
+    });
+
+    test('renders the associate editor for the parsed interaction', async () => {
+      renderAssociateItem();
+      expect(await screen.findByText(responsePoolLabel$())).toBeInTheDocument();
+      expect(screen.getByText('Antonio')).toBeInTheDocument();
+    });
+  });
+
   describe('toolbarActions slot', () => {
     test('renders content injected into the toolbarActions slot', () => {
       renderComponent({}, { toolbarActions: '<button>Edit</button>' });

contentcuration/contentcuration/frontend/shared/views/QTIEditor/components/QTIItemEditor/index.vue

@@ -182,6 +182,7 @@
           [QuestionType.TEXT_ENTRY]: qtiEditorStrings.textEntryLabel$,
           [QuestionType.FREE_RESPONSE]: qtiEditorStrings.freeResponseLabel$,
           [QuestionType.ORDERING]: qtiEditorStrings.orderingLabel$,
+          [QuestionType.ASSOCIATE]: qtiEditorStrings.associateLabel$,
         };
         return (QUESTION_TYPE_LABELS[type] ?? unknownTypeLabel$)();
       });

contentcuration/contentcuration/frontend/shared/views/QTIEditor/composables/__tests__/useAssociateInteraction.spec.js

@@ -0,0 +1,122 @@
+import { ref } from 'vue';
+import { useAssociateInteraction } from '../useAssociateInteraction';
+import { ASSOCIATE_XML, ASSOCIATE_DECL_XML } from '../../utils/testingFixtures';
+import { parseXML } from '../../serialization/xml';
+import { QuestionType } from '../../constants';
+
+const GENERATED_ID = /^choice_[a-z0-9]{8}$/;
+
+const contentsOf = pairs => pairs.map(pair => pair.map(choice => choice.content));
+
+const maxAssociations = bodyXml =>
+  parseXML(bodyXml).documentElement.getAttribute('max-associations');
+
+describe('useAssociateInteraction', () => {
+  function setup(bodyXml = ASSOCIATE_XML, declarationXml = ASSOCIATE_DECL_XML) {
+    const questionType = ref(QuestionType.ASSOCIATE);
+    return useAssociateInteraction(
+      { bodyXml, responseDeclarations: [declarationXml] },
+      questionType,
+    );
+  }
+
+  describe('initial state', () => {
+    it('parses pairs and distractors from the fixture XML', () => {
+      const { state } = setup();
+      expect(contentsOf(state.value.pairs)).toEqual([
+        ['Antonio', 'Prospero'],
+        ['Capulet', 'Montague'],
+      ]);
+      expect(state.value.distractors.map(d => d.content)).toEqual(['Lysander']);
+    });
+  });
+
+  describe('addPair()', () => {
+    it('appends a pair of two blank choices with distinct generated ids', () => {
+      const { state, addPair } = setup();
+      addPair();
+      expect(contentsOf(state.value.pairs)).toEqual([
+        ['Antonio', 'Prospero'],
+        ['Capulet', 'Montague'],
+        ['', ''],
+      ]);
+      const [first, second] = state.value.pairs[2];
+      expect(first.id).toMatch(GENERATED_ID);
+      expect(second.id).toMatch(GENERATED_ID);
+      expect(first.id).not.toBe(second.id);
+    });
+
+    it('rebuilds bodyXml with the new max-associations', () => {
+      const { bodyXml, addPair } = setup();
+      addPair();
+      expect(maxAssociations(bodyXml.value)).toBe('3');
+    });
+  });
+
+  describe('removePair()', () => {
+    it('drops the pair at the given index and keeps the rest in order', () => {
+      const { state, removePair } = setup();
+      removePair(0);
+      expect(contentsOf(state.value.pairs)).toEqual([['Capulet', 'Montague']]);
+    });
+
+    it('is a no-op when only one pair remains', () => {
+      const { state, removePair } = setup();
+      removePair(0);
+      removePair(0);
+      expect(contentsOf(state.value.pairs)).toEqual([['Capulet', 'Montague']]);
+    });
+
+    it('drops the pair from the emitted correct response', () => {
+      const { responseDeclarations, removePair } = setup();
+      removePair(0);
+      expect(responseDeclarations.value[0]).not.toContain('choice_aaa11111');
+    });
+  });
+
+  describe('setPair()', () => {
+    it('replaces only the pair at the given index', () => {
+      const { state, setPair } = setup();
+      const [first, second] = state.value.pairs[0];
+      setPair(0, [{ ...first, content: '<p>Updated</p>' }, second]);
+      expect(contentsOf(state.value.pairs)).toEqual([
+        ['<p>Updated</p>', 'Prospero'],
+        ['Capulet', 'Montague'],
+      ]);
+    });
+  });
+
+  describe('addDistractor()', () => {
+    it('appends one blank choice with a generated id', () => {
+      const { state, addDistractor } = setup();
+      addDistractor();
+      expect(state.value.distractors).toHaveLength(2);
+      expect(state.value.distractors[1].content).toBe('');
+      expect(state.value.distractors[1].id).toMatch(GENERATED_ID);
+    });
+
+    it('appends the given content when the distractor is written before it is added', () => {
+      const { state, addDistractor } = setup();
+      addDistractor('<p>Demetrius</p>');
+      expect(state.value.distractors[1].content).toBe('<p>Demetrius</p>');
+      expect(state.value.distractors[1].id).toMatch(GENERATED_ID);
+    });
+  });
+
+  describe('removeDistractor()', () => {
+    it('drops the distractor at the given index', () => {
+      const { state, removeDistractor } = setup();
+      removeDistractor(0);
+      expect(state.value.distractors).toEqual([]);
+    });
+  });
+
+  describe('setDistractorContent()', () => {
+    it('updates only the targeted distractor', () => {
+      const { state, addDistractor, setDistractorContent } = setup();
+      addDistractor();
+      setDistractorContent(1, '<p>Updated</p>');
+      expect(state.value.distractors.map(d => d.content)).toEqual(['Lysander', '<p>Updated</p>']);
+    });
+  });
+});

contentcuration/contentcuration/frontend/shared/views/QTIEditor/composables/useAssociateInteraction.js

@@ -0,0 +1,74 @@
+import { readonly } from 'vue';
+import { associateInteractionDescriptor } from '../interactions/associate/Descriptor';
+import { newChoice } from '../interactions/associate/parse';
+import { useInteraction } from './useInteraction';
+
+/**
+ * Composable for the associate interaction editor.
+ *
+ * @param {{ bodyXml: string, responseDeclarations: string[] }} interactionBlock
+ * @param {import('vue').Ref<string|null>} questionType
+ */
+export function useAssociateInteraction(interactionBlock, questionType) {
+  const base = useInteraction(associateInteractionDescriptor, interactionBlock, questionType);
+  const { state } = base;
+
+  function addPair() {
+    state.value = { ...state.value, pairs: [...state.value.pairs, [newChoice(), newChoice()]] };
+  }
+
+  function removePair(index) {
+    // An associate question is meaningless without a pair to associate.
+    if (state.value.pairs.length <= 1) return;
+    state.value = {
+      ...state.value,
+      pairs: state.value.pairs.filter((_, i) => i !== index),
+    };
+  }
+
+  function setPair(index, newPair) {
+    state.value = {
+      ...state.value,
+      pairs: state.value.pairs.map((pair, i) => (i === index ? newPair : pair)),
+    };
+  }
+
+  function addDistractor(content = '') {
+    state.value = {
+      ...state.value,
+      distractors: [...state.value.distractors, newChoice(content)],
+    };
+  }
+
+  function removeDistractor(index) {
+    state.value = {
+      ...state.value,
+      distractors: state.value.distractors.filter((_, i) => i !== index),
+    };
+  }
+
+  function setDistractorContent(index, html) {
+    state.value = {
+      ...state.value,
+      distractors: state.value.distractors.map((choice, i) =>
+        i === index ? { ...choice, content: html } : choice,
+      ),
+    };
+  }
+
+  function setPrompt(html) {
+    state.value = { ...state.value, prompt: html };
+  }
+
+  return {
+    ...base,
+    state: readonly(state),
+    addPair,
+    removePair,
+    setPair,
+    addDistractor,
+    removeDistractor,
+    setDistractorContent,
+    setPrompt,
+  };
+}

contentcuration/contentcuration/frontend/shared/views/QTIEditor/constants.js

@@ -53,6 +53,7 @@ export const QtiInteraction = Object.freeze({
   CHOICE: 'qti-choice-interaction',
   ORDER: 'qti-order-interaction',
   MATCH: 'qti-match-interaction',
+  ASSOCIATE: 'qti-associate-interaction',
   TEXT_ENTRY: 'qti-text-entry-interaction',
   EXTENDED_TEXT: 'qti-extended-text-interaction',
 });
@@ -82,6 +83,7 @@ export const QuestionType = Object.freeze({
   TEXT_ENTRY: 'textEntry',
   FREE_RESPONSE: 'freeResponse',
   ORDERING: 'ordering',
+  ASSOCIATE: 'associate',
 });
 
 /**
@@ -103,6 +105,9 @@ export const ValidationError = Object.freeze({
   EMPTY_ANSWER_CONTENT: 'EMPTY_ANSWER_CONTENT',
   DUPLICATE_ANSWER_CONTENT: 'DUPLICATE_ANSWER_CONTENT',
   TOO_FEW_CHOICES: 'TOO_FEW_CHOICES',
+  TOO_FEW_PAIRS: 'TOO_FEW_PAIRS',
+  DUPLICATE_PAIR_CONTENT: 'DUPLICATE_PAIR_CONTENT',
+  DUPLICATE_DISTRACTOR_CONTENT: 'DUPLICATE_DISTRACTOR_CONTENT',
 });
 
 export const RESPONSE_IDENTIFIER = 'RESPONSE';