Adds e2e tests

Author: JackieBinya

tests/e2e/specs/DropdownStep.js

@@ -0,0 +1,19 @@
+module.exports = {
+    '@tags': ['ds'],
+    'DropdownStep'(browser) {
+        browser
+            .init()
+            .assert.elementPresent('.control-label > span')
+            .click('.control-label > span')
+            .assert.not.cssClassPresent('.pagination-next', 'disabled')
+            .click('.pagination-next')
+            .assert.elementPresent('.select > select')
+            .click('.select > select')
+            .click('option[value="CC0 1.0"]')
+            .assert.not.cssClassPresent('.pagination-next', 'disabled')
+            .click('.pagination-next')
+            .assert.visible('.step-description')
+            .assert.containsText('div.step-description', 'CC0 1.0 Universal')
+            .end()
+    }
+}