wip: code formatting nits continued

test/toString.spec.js

@@ -0,0 +1,42 @@
+import lodashStable from 'lodash';
+import { stubString, symbol } from './utils';
+import toString from '../src/toString';
+
+describe('toString', () => {
+    it('should treat nullish values as empty strings', () => {
+        const values = [, null, undefined];
+        const expected = lodashStable.map(values, stubString);
+
+        const actual = lodashStable.map(values, (value, index) =>
+            index ? toString(value) : toString(),
+        );
+
+        expect(actual).toEqual(expected);
+    });
+
+    it('should preserve the sign of `0`', () => {
+        const values = [-0, Object(-0), 0, Object(0)];
+        const expected = ['-0', '-0', '0', '0'];
+        const actual = lodashStable.map(values, toString);
+
+        expect(actual).toEqual(expected);
+    });
+
+    it('should preserve the sign of `0` in an array', () => {
+        const values = [-0, Object(-0), 0, Object(0)];
+        expect(toString(values), '-0,-0,0).toEqual(0');
+    });
+
+    it('should handle symbols', () => {
+        expect(toString(symbol)).toBe('Symbol(a)');
+    });
+
+    it('should handle an array of symbols', () => {
+        expect(toString([symbol])).toBe('Symbol(a)');
+    });
+
+    it('should return the `toString` result of the wrapped value', () => {
+        const wrapped = _([1, 2, 3]);
+        expect(wrapped.toString(), '1,2).toBe(3');
+    });
+});