fix(audit): updated axe.reset() to reset branding, application, and t…

…agExcludes. (dequelabs#2537)

* Moved brand, application, and tagExclude setting to Init.

This way when reset is called they will also be rest.

* Added the tests for brand and application.

* Finished the test for tagExclude.

* Updated the code to check for arrays to be equal.

* Updated for checking if arrays are equal.

* Fixed the tagExclude test case.

lib/core/base/audit.js

@@ -150,9 +150,6 @@ const mergeFallbackMessage = (a, b) => {
 class Audit {
 	constructor(audit) {
 		// defaults
-		this.brand = 'axe';
-		this.application = 'axeAPI';
-		this.tagExclude = ['experimental'];
 		this.lang = 'en';
 		this.defaultConfig = audit;
 		this.standards = standards;
@@ -298,6 +295,9 @@ class Audit {
 		this.commands = {};
 		this.rules = [];
 		this.checks = {};
+		this.brand = 'axe';
+		this.application = 'axeAPI';
+		this.tagExclude = ['experimental'];
 		unpackToObject(audit.rules, this, 'addRule');
 		unpackToObject(audit.checks, this, 'addCheck');
 		this.data = {};

test/core/base/audit.js

@@ -394,6 +394,35 @@ describe('Audit', function() {
 			audit.resetRulesAndChecks();
 			assert.equal(audit.lang, 'en');
 		});
+		it('should reset brand', function() {
+			var audit = new Audit();
+			assert.equal(audit.brand, 'axe');
+			audit.setBranding({
+				brand: 'test'
+			});
+			assert.equal(audit.brand, 'test');
+			audit.resetRulesAndChecks();
+			assert.equal(audit.brand, 'axe');
+		});
+		it('should reset brand application', function() {
+			var audit = new Audit();
+			assert.equal(audit.application, 'axeAPI');
+			audit.setBranding({
+				application: 'test'
+			});
+			assert.equal(audit.application, 'test');
+			audit.resetRulesAndChecks();
+			assert.equal(audit.application, 'axeAPI');
+		});
+		it('should reset brand tagExlcude', function() {
+			axe._load({});
+			assert.deepEqual(axe._audit.tagExclude, ['experimental']);
+			axe.configure({
+				tagExclude: ['ninjas']
+			});
+			axe._audit.resetRulesAndChecks();
+			assert.deepEqual(axe._audit.tagExclude, ['experimental']);
+		});
 	});
 
 	describe('Audit#addCheck', function() {