Merge pull request #9 from WordPress/add/setup-jest

Test: Setup unit testing using Jest

Author: omarreiss

.gitignore

@@ -3,3 +3,5 @@ node_modules/
 /packages/*/build/
 /packages/*/build-module/
 /packages/*/build-browser/
+
+coverage/

package.json

@@ -6,12 +6,15 @@
     "babel-preset-env": "^1.5.2",
     "chalk": "^1.1.3",
     "glob": "^7.1.2",
+    "jest": "^20.0.4",
     "lerna": "^2.0.0-rc.5",
     "mkdirp": "^0.5.1",
     "rimraf": "^2.6.1"
   },
   "scripts": {
     "build-clean": "rimraf ./packages/*/build ./packages/*/build-browser ./packages/*/build-module",
-    "build": "node ./scripts/build.js"
+    "build": "node ./scripts/build.js",
+    "test": "jest",
+    "watch": "jest --watch"
   }
 }

packages/url/src/test/index.test.js

@@ -0,0 +1,20 @@
+/**
+ * Internal Dependencies
+ */
+import { addQueryArgs } from '../';
+
+describe( 'addQueryArgs', () => {
+	test( 'should append args to an URL without query string', () => {
+		const url = 'https://andalouses.com/beach';
+		const args = { sun: 'true', sand: 'false' };
+
+		expect( addQueryArgs( url, args ) ).toBe( 'https://andalouses.com/beach?sun=true&sand=false' );
+	} );
+
+	test( 'should append args to an URL with query string', () => {
+		const url = 'https://andalouses.com/beach?night=false';
+		const args = { sun: 'true', sand: 'false' };
+
+		expect( addQueryArgs( url, args ) ).toBe( 'https://andalouses.com/beach?night=false&sun=true&sand=false' );
+	} );
+} );