wip: code formatting nits continued

test/before.spec.js

@@ -0,0 +1,45 @@
+import lodashStable from 'lodash';
+import { _ } from './utils';
+
+describe('before', () => {
+    function before(n, times) {
+        let count = 0;
+        lodashStable.times(
+            times,
+            _.before(n, () => {
+                count++;
+            }),
+        );
+        return count;
+    }
+
+    it('should create a function that invokes `func` after `n` calls', () => {
+        assert.strictEqual(
+            before(5, 4),
+            4,
+            'before(n) should invoke `func` before being called `n` times',
+        );
+        assert.strictEqual(
+            before(5, 6),
+            4,
+            'before(n) should not invoke `func` after being called `n - 1` times',
+        );
+        expect(before(0, 0), 0).toBe('before(0) should not invoke `func` immediately');
+        expect(before(0, 1), 0).toBe('before(0) should not invoke `func` when called');
+    });
+
+    it('should coerce `n` values of `NaN` to `0`', () => {
+        expect(before(NaN, 1)).toBe(0);
+    });
+
+    it('should use `this` binding of function', () => {
+        const before = _.before(2, function () {
+            return ++this.count;
+        });
+        const object = { before: before, count: 0 };
+
+        object.before();
+        expect(object.before()).toBe(1);
+        expect(object.count).toBe(1);
+    });
+});