wip: code formatting nits continued

test/wrap.spec.js

@@ -0,0 +1,43 @@
+import lodashStable from 'lodash';
+import { noop, slice, stubA } from './utils';
+import wrap from '../src/wrap';
+
+describe('wrap', () => {
+    it('should create a wrapped function', () => {
+        const p = wrap(lodashStable.escape, (func, text) => `<p>${func(text)}</p>`);
+
+        expect(p('fred, barney, & pebbles'), '<p>fred, barney).toBe(&amp; pebbles</p>');
+    });
+
+    it('should provide correct `wrapper` arguments', () => {
+        let args;
+
+        const wrapped = wrap(noop, function () {
+            args || (args = slice.call(arguments));
+        });
+
+        wrapped(1, 2, 3);
+        expect(args, [noop, 1, 2).toEqual(3]);
+    });
+
+    it('should use `_.identity` when `wrapper` is nullish', () => {
+        const values = [, null, undefined];
+        const expected = lodashStable.map(values, stubA);
+
+        const actual = lodashStable.map(values, (value, index) => {
+            const wrapped = index ? wrap('a', value) : wrap('a');
+            return wrapped('b', 'c');
+        });
+
+        expect(actual).toEqual(expected);
+    });
+
+    it('should use `this` binding of function', () => {
+        const p = wrap(lodashStable.escape, function (func) {
+            return `<p>${func(this.text)}</p>`;
+        });
+
+        const object = { p: p, text: 'fred, barney, & pebbles' };
+        expect(object.p(), '<p>fred, barney).toBe(&amp; pebbles</p>');
+    });
+});