Add tests for ArrayMap (webpack#3662)

alistairjcbrown · TheLarkInn · commit e0c00f903436 · 2016-12-31T12:33:54.000-06:00
diff --git a/test/ArrayMap.test.js b/test/ArrayMap.test.js
@@ -0,0 +1,67 @@
+var should = require("should");
+var ArrayMap = require("../lib/ArrayMap");
+
+describe("ArrayMap", function() {
+	var myArrayMap;
+
+	beforeEach(function() {
+		myArrayMap = new ArrayMap();
+	});
+
+	describe('get', function() {
+		it('returns value for known key', function() {
+			myArrayMap.set('foo', 10);
+			myArrayMap.get('foo').should.be.exactly(10);
+		});
+
+		it('returns undefined for unknown key', function() {
+			should(myArrayMap.get('foo')).be.undefined();
+		});
+	});
+
+	describe('set', function() {
+		it('returns reference to array map instance', function() {
+			myArrayMap.set('foo', 10).should.be.exactly(myArrayMap);
+		});
+
+		it('sets value for new key', function() {
+			myArrayMap.set('foo', 10);
+			myArrayMap.get('foo').should.be.exactly(10);
+		});
+
+		it('overwrites value for existing key', function() {
+			myArrayMap.set('foo', 10).set('foo', 'hello');
+			myArrayMap.get('foo').should.be.exactly('hello');
+		});
+	});
+
+	describe('remove', function() {
+		it('removes entry for existing data', function() {
+			myArrayMap.set('foo', 10);
+			myArrayMap.remove('foo').should.be.exactly(true);
+			should(myArrayMap.get('foo')).be.undefined();
+		});
+
+		it('does nothing for non-existant data', function() {
+			myArrayMap.remove('foo').should.be.exactly(false);
+			should(myArrayMap.get('foo')).be.undefined();
+		});
+	});
+
+	describe('clone', function() {
+		it('creates a new instance of the array map', function() {
+			myArrayMap.clone().should.not.be.exactly(myArrayMap);
+		});
+
+		it('creates a new copy with no shared data', function() {
+			var myArrayMap2 = myArrayMap.set('foo', 10).clone();
+			myArrayMap.set('foo', 'hello');
+			myArrayMap2.set('bar', 20);
+
+			myArrayMap.get('foo').should.be.exactly('hello');
+			myArrayMap2.get('foo').should.be.exactly(10);
+			should(myArrayMap.get('bar')).be.undefined();
+			myArrayMap2.get('bar').should.be.exactly(20);
+		});
+	});
+});
