feat: don't show masters-only columns for courses without a masters track

src/data/selectors/grades.js

@@ -92,7 +92,11 @@ export const formatMinAssignmentGrade = (percentGrade, options) => (
  * @param {string} label - assignment filter label
  * @return {string[]} - list of table headers
  */
-export const headingMapper = (category, label = 'All') => {
+export const headingMapper = (
+  category,
+  label = 'All',
+  hasMastersTrack = false,
+) => {
   const filters = {
     all: section => section.label,
     byCategory: section => section.label && section.category === category,
@@ -105,17 +109,25 @@ export const headingMapper = (category, label = 'All') => {
   } else {
     filter = filters.byLabel;
   }
+
   const {
     username,
     fullName,
     email,
     totalGrade,
   } = Headings;
+  let userIdentificationHeadings;
+  if (hasMastersTrack) {
+    userIdentificationHeadings = [username, fullName, email];
+  } else {
+    userIdentificationHeadings = [username];
+  }
+
   const filteredLabels = (entry) => entry.filter(filter).map(s => s.label);
 
   return (entry) => (
     entry
-      ? [username, fullName, email, ...filteredLabels(entry), totalGrade]
+      ? [...userIdentificationHeadings, ...filteredLabels(entry), totalGrade]
       : []
   );
 };

src/data/selectors/grades.test.js

@@ -182,7 +182,7 @@ describe('grades selectors', () => {
   });
 
   describe('headingMapper', () => {
-    const expectedHeaders = (subsectionLabels) => ([
+    const expectedMastersHeaders = (subsectionLabels) => ([
       USERNAME_HEADING,
       FULL_NAME_HEADING,
       EMAIL_HEADING,
@@ -190,27 +190,37 @@ describe('grades selectors', () => {
       TOTAL_COURSE_GRADE_HEADING,
     ]);
 
+    const expectedNonMastersHeaders = (subsectionLabels) => ([
+      USERNAME_HEADING,
+      ...subsectionLabels,
+      TOTAL_COURSE_GRADE_HEADING,
+    ]);
     const rows = genericResultsRows;
     const selector = selectors.headingMapper;
-    it('creates headers for all assignments when no filtering is applied', () => {
-      expect(selector('All')(genericResultsRows)).toEqual(
-        expectedHeaders([rows[0].label, rows[1].label, rows[2].label]),
-      );
-    });
-    it('creates headers for only matching assignment types when type filter is applied', () => {
-      expect(
-        selector('Homework')(genericResultsRows),
-      ).toEqual(
-        expectedHeaders([rows[0].label, rows[1].label]),
-      );
-    });
-    it('creates headers for only matching assignment when label filter is applied', () => {
-      expect(selector('Homework', rows[1].label)(rows)).toEqual(
-        expectedHeaders([rows[1].label]),
-      );
-    });
-    it('returns an empty array when no entries are passed', () => {
-      expect(selector('all')(undefined)).toEqual([]);
+    [true, false].forEach((isMasters) => {
+      const expectedHeaders = isMasters ? expectedMastersHeaders : expectedNonMastersHeaders;
+      describe(isMasters ? 'Masters' : 'Not Masters', () => {
+        it('creates headers for all assignments when no filtering is applied', () => {
+          expect(selector('All', 'All', isMasters)(genericResultsRows)).toEqual(
+            expectedHeaders([rows[0].label, rows[1].label, rows[2].label]),
+          );
+        });
+        it('creates headers for only matching assignment types when type filter is applied', () => {
+          expect(
+            selector('Homework', 'All', isMasters)(genericResultsRows),
+          ).toEqual(
+            expectedHeaders([rows[0].label, rows[1].label]),
+          );
+        });
+        it('creates headers for only matching assignment when label filter is applied', () => {
+          expect(selector('Homework', rows[1].label, isMasters)(rows)).toEqual(
+            expectedHeaders([rows[1].label]),
+          );
+        });
+        it('returns an empty array when no entries are passed', () => {
+          expect(selector('all')(undefined)).toEqual([]);
+        });
+      });
     });
   });
 

src/data/selectors/index.js

@@ -109,6 +109,7 @@ export const formattedGradeLimits = (state) => {
 export const getHeadings = (state) => grades.headingMapper(
   filters.assignmentType(state) || 'All',
   filters.selectedAssignmentLabel(state) || 'All',
+  tracks.stateHasMastersTrack(state),
 )(grades.getExampleSectionBreakdown(state));
 
 /**

src/data/selectors/index.test.js

@@ -295,20 +295,27 @@ describe('root selectors', () => {
     const selector = moduleSelectors.getHeadings;
     beforeEach(() => {
       selectors.grades.headingMapper = jest.fn(
-        (type, label) => (breakdown) => ({ headingMapper: { type, label, breakdown } }),
+        (type, label, hasMastersTrack) => (breakdown) => ({
+          headingMapper: {
+            type, label, hasMastersTrack, breakdown,
+          },
+        }),
       );
       selectors.filters.assignmentType = jest.fn();
       selectors.filters.selectedAssignmentLabel = jest.fn();
+      selectors.tracks.stateHasMastersTrack = jest.fn();
       selectors.grades.getExampleSectionBreakdown = mockFn('getExampleSectionBreakdown');
     });
     describe('no assignmentType or label selected', () => {
       it('maps selected filters into getExampleSectionBreakdown', () => {
         selectors.filters.assignmentType.mockReturnValue(undefined);
         selectors.filters.selectedAssignmentLabel.mockReturnValue(undefined);
+        selectors.tracks.stateHasMastersTrack.mockReturnValue(false);
         expect(selector(testState)).toEqual({
           headingMapper: {
             type: 'All',
             label: 'All',
+            hasMastersTrack: false,
             breakdown: { getExampleSectionBreakdown: testState },
           },
         });
@@ -318,10 +325,27 @@ describe('root selectors', () => {
       it('maps selected filters into getExampleSectionBreakdown', () => {
         selectors.filters.assignmentType.mockReturnValue(mockAssignmentType);
         selectors.filters.selectedAssignmentLabel.mockReturnValue(mockAssignmentLabel);
+        selectors.tracks.stateHasMastersTrack.mockReturnValue(false);
         expect(selector(testState)).toEqual({
           headingMapper: {
             type: mockAssignmentType,
             label: mockAssignmentLabel,
+            hasMastersTrack: false,
+            breakdown: { getExampleSectionBreakdown: testState },
+          },
+        });
+      });
+    });
+    describe('has masters track', () => {
+      it('maps selected filters into getExampleSectionBreakdown', () => {
+        selectors.filters.assignmentType.mockReturnValue(undefined);
+        selectors.filters.selectedAssignmentLabel.mockReturnValue(undefined);
+        selectors.tracks.stateHasMastersTrack.mockReturnValue(true);
+        expect(selector(testState)).toEqual({
+          headingMapper: {
+            type: 'All',
+            label: 'All',
+            hasMastersTrack: true,
             breakdown: { getExampleSectionBreakdown: testState },
           },
         });