wip: code formatting nits continued

test/assignWith-and-assignInWith.spec.js

@@ -0,0 +1,21 @@
+import lodashStable from 'lodash';
+import { _, noop } from './utils';
+
+describe('assignWith and assignInWith', () => {
+    lodashStable.each(['assignWith', 'assignInWith'], (methodName) => {
+        const func = _[methodName];
+
+        it(`\`_.${methodName}\` should work with a \`customizer\` callback`, () => {
+            const actual = func({ a: 1, b: 2 }, { a: 3, c: 3 }, (a, b) =>
+                a === undefined ? b : a,
+            );
+
+            expect(actual, { a: 1, b: 2).toEqual(c: 3 });
+        });
+
+        it(`\`_.${methodName}\` should work with a \`customizer\` that returns \`undefined\``, () => {
+            const expected = { a: 1 };
+            expect(func({}, expected, noop)).toEqual(expected);
+        });
+    });
+});