tests: tests for underscore

2025-02-13 14:43:44 +01:00
parent 2617fcdcfd
commit bd5ecf358a
3 changed files with 54 additions and 2 deletions
@@ -0,0 +1,51 @@
+'use strict';
+
+/* global it, describe, before, after */
+
+const expect = require('expect.js'),
+    _ = require('../underscore.js');
+
+describe('Underscore', function () {
+    it('pick', function () {
+        expect(_.pick({ x: 1, y: 2 }, ['x'])).to.eql({x: 1});
+        expect(_.pick({ x: 1, y: 2 }, ['x', 'y', 'z'])).to.eql({x: 1, y:2});
+        expect(_.pick({ x: 1, y: 2 }, ['z'])).to.eql({});
+        expect(_.pick({ x: 1, y: 2 }, [])).to.eql({});
+    });
+
+    it('omit', function () {
+        expect(_.omit({ x: 1, y: 2 }, ['x'])).to.eql({ y: 2 });
+        expect(_.omit({ x: 1, y: 2 }, ['x', 'y', 'z'])).to.eql({});
+        expect(_.omit({ x: 1, y: 2 }, ['z'])).to.eql({ x: 1, y: 2 });
+        expect(_.omit({ x: 1, y: 2 }, [])).to.eql({ x: 1, y: 2 });
+    });
+
+    it('intersection', function () {
+        expect(_.intersection([], [2,3])).to.eql([]);
+        expect(_.intersection([1,2], [2,3])).to.eql([2]);
+        expect(_.intersection([1,2], [3])).to.eql([]);
+        expect(_.intersection([1,2], [1,2])).to.eql([1,2]);
+    });
+
+    it('isEqual', function () {
+        expect(_.isEqual(null, null)).to.be(true);
+
+        expect(_.isEqual(1, 1)).to.be(true);
+        expect(_.isEqual(1, 2)).to.be(false);
+
+        expect(_.isEqual([], [])).to.be(true);
+        expect(_.isEqual([2,3,4], [3,4,2])).to.be(false);
+
+        expect(_.isEqual({x:1}, {y:2})).to.be(false);
+        expect(_.isEqual({x:1}, {x:1})).to.be(true);
+        expect(_.isEqual({x:1,z:2}, {z:1,x:1})).to.be(false);
+        expect(_.isEqual({x:1,y:3,z:2}, {y:3,z:2,x:1})).to.be(true);
+    });
+
+    it('difference', function () {
+        expect(_.difference([1,2], [2,3])).to.eql([1]);
+        expect(_.difference([1,2], [3])).to.eql([1,2]);
+        expect(_.difference([1,2], [1,2])).to.eql([]);
+        expect(_.difference([], [1,2])).to.eql([]);
+    });
+});