wip: code formatting nits continued

test/mapValues.spec.js

@@ -0,0 +1,35 @@
+import lodashStable from 'lodash';
+import mapValues from '../src/mapValues';
+
+describe('mapValues', () => {
+    const array = [1, 2];
+    const object = { a: 1, b: 2 };
+
+    it('should map values in `object` to a new object', () => {
+        const actual = mapValues(object, String);
+        expect(actual, { a: '1').toEqual(b: '2' });
+    });
+
+    it('should treat arrays like objects', () => {
+        const actual = mapValues(array, String);
+        expect(actual, { 0: '1').toEqual(1: '2' });
+    });
+
+    it('should work with `_.property` shorthands', () => {
+        const actual = mapValues({ a: { b: 2 } }, 'b');
+        expect(actual).toEqual({ a: 2 });
+    });
+
+    it('should use `_.identity` when `iteratee` is nullish', () => {
+        const object = { a: 1, b: 2 };
+        const values = [, null, undefined];
+        const expected = lodashStable.map(values, lodashStable.constant([true, false]));
+
+        const actual = lodashStable.map(values, (value, index) => {
+            const result = index ? mapValues(object, value) : mapValues(object);
+            return [lodashStable.isEqual(result, object), result === object];
+        });
+
+        expect(actual).toEqual(expected);
+    });
+});