Add missing function that

checks if element is not visible

selenium/test/oauth/with-idp-down/landing.js

@@ -26,7 +26,7 @@ describe('When UAA is down', function () {
 
   it('should not be presented with a login button to log in', async function () {
     await homePage.isLoaded()
-    assert.equal(false, await homePage.isLoginButtonVisible())    
+    assert.ok(await homePage.isLoginButtonNotVisible())
   })
 
   after(async function () {

selenium/test/pageobjects/BasePage.js

@@ -163,6 +163,27 @@ module.exports = class BasePage {
       })
       */
   }
+  
+  async isPopupWarningNotDisplayed() {
+    return this.isElementNotVisible(FORM_POPUP)
+  }
+
+  async isElementNotVisible(locator) {
+    try {
+      await this.driver.wait(async() => {
+        try {
+          const element = await this.driver.findElement(locator)
+          const visible = await element.isDisplayed()
+          return !visible
+        } catch (error) {
+          return true
+        }
+      }, this.timeout)
+      return true
+    } catch (error) {
+      return false
+    }
+  }
   async getPopupWarning() {
     let element = await driver.findElement(FORM_POPUP)
     return this.driver.wait(until.elementIsVisible(element), this.timeout,

selenium/test/pageobjects/SSOHomePage.js

@@ -51,6 +51,9 @@ module.exports = class SSOHomePage extends BasePage {
   async getOAuthResourceOptions () {
     return this.getSelectableOptions(SELECT_RESOURCES)
   }
+  async isLoginButtonNotVisible() {
+    return this.isElementNotVisible(OAUTH2_LOGIN_BUTTON)
+  }
   async isLoginButtonVisible() {
     try {
       await this.waitForDisplayed(OAUTH2_LOGIN_BUTTON)