wip: code formatting nits continued

test/mapKeys-and-mapValues.spec.js

@@ -0,0 +1,35 @@
+import lodashStable from 'lodash';
+import { _, falsey, stubObject, noop } from './utils';
+
+describe('mapKeys and mapValues', () => {
+    lodashStable.each(['mapKeys', 'mapValues'], (methodName) => {
+        const func = _[methodName];
+        const object = { a: 1, b: 2 };
+
+        it(`\`_.${methodName}\` should iterate over own string keyed properties of objects`, () => {
+            function Foo() {
+                this.a = 'a';
+            }
+            Foo.prototype.b = 'b';
+
+            const actual = func(new Foo(), (value, key) => key);
+            expect(actual).toEqual({ a: 'a' });
+        });
+
+        it(`\`_.${methodName}\` should accept a falsey \`object\``, () => {
+            const expected = lodashStable.map(falsey, stubObject);
+
+            const actual = lodashStable.map(falsey, (object, index) => {
+                try {
+                    return index ? func(object) : func();
+                } catch (e) {}
+            });
+
+            expect(actual).toEqual(expected);
+        });
+
+        it(`\`_.${methodName}\` should return a wrapped value when chaining`, () => {
+            expect(_(object)[methodName](noop) instanceof _);
+        });
+    });
+});