localStorage - changed stored model

test/app/logic/localStorage.test.js

@@ -0,0 +1,73 @@
+import {
+  PEOPLE_MODE,
+  VEHICLE_MODE,
+  SPACESHIPS_MODE,
+} from '../../../src/app/modes';
+import { getScores, saveScore } from '../../../src/app/logic/localStorageScore';
+
+describe('LocalStorageScore saveScore() and getScore()', () => {
+  describe.each([
+    [PEOPLE_MODE, 'Bob', 100, 10, 1],
+    [VEHICLE_MODE, 'Beth', 31, 10, 1],
+    [SPACESHIPS_MODE, 'Penny', 12, 10, 1],
+    ['invalidMode', 'Spencer', 64, 10, 0],
+    [SPACESHIPS_MODE, 'Josh', -12, 10, 0],
+  ])(
+    'Adding score when no entries',
+    (mode, nickname, correctNumber, questionsNumber, expected) => {
+      beforeEach(() => {
+        localStorage.clear();
+      });
+
+      test(`Score table in mode ${mode} has ${expected} entries`, () => {
+        saveScore(mode, nickname, correctNumber, questionsNumber);
+        expect(getScores(mode).length).toBe(expected);
+      });
+
+      test(`Sum of all tables entries equals ${expected}`, () => {
+        saveScore(mode, nickname, correctNumber, questionsNumber);
+        expect(
+          getScores(PEOPLE_MODE).length +
+            getScores(VEHICLE_MODE).length +
+            getScores(SPACESHIPS_MODE).length,
+        ).toBe(expected);
+      });
+    },
+  );
+
+  test('Should throw an error if correctNumber is not type of number', () => {
+    expect(() => {
+      saveScore(PEOPLE_MODE, 'Lucy', '12', 12);
+    }).toThrow('score shall be of type "number"');
+  });
+
+  test('Add multiple scores', () => {
+    const mode = PEOPLE_MODE;
+
+    saveScore(mode, 'Bob', 12, 30);
+    saveScore(mode, 'Nancy', 10, 30);
+    saveScore(mode, 'Nandor', 17, 30);
+    saveScore(mode, 'Lucy', 15, 30);
+
+    const scores = getScores(mode);
+
+    expect(scores.length === 3);
+    expect(
+      scores[0].nickname === 'Lucy' &&
+        scores[0].correctNumber === 17 &&
+        scores[0].questionsNumber === 30 &&
+        scores[0].percentage === (100 * 17) / 30,
+    );
+    expect(
+      scores[1].nickname === 'Nandor' &&
+        scores[1].correctNumber === 17 &&
+        scores[1].questionsNumber === 30 &&
+        scores[1].percentage === (100 * 17) / 30,
+    );
+    expect(
+      scores[2].nickname === 'Bob' &&
+        scores[2].correctNumber === 12 &&
+        scores[2].percentage === (100 * 12) / 30,
+    );
+  });
+});