v4.7.0: isExisting shouldn't raise an error for a nonexistent element

[selenetelenav]

The problem

I use the element.isExisting() method to test whether an element exists without having to catch an error, as described in the docs http://webdriver.io/api/state/isExisting.html .

After updating to Webdriverio v4.7.0, isExisting() raises an error when called on a nonexistent element.

Environment

• WebdriverIO version: New in 4.7.0. Not present in 4.6.2.
• Node.js version: v6.2.0
• wdio testrunner in synchronous mode
• Additional wdio packages used (if applicable):
  • wdio-dot-reporter@0.0.6
  • wdio-jasmine-framework@0.2.19
  • wdio-junit-reporter@0.1.0
  • wdio-selenium-standalone-service@0.0.6

Details

Sample test

describe('test isExisting', function () {
  it ('should not raise an error for nonexistent element', function () {
    expect(browser.element('#nonexistent').isExisting()).toBeFalsy();
  });
});

Test results on v4.7.0:

F

0 passing (5.00s)
1 failing

1) test isExistingsuite1 should not raise an error for nonexistent element:
Failed: An element could not be located on the page using the given search parameters ("#nonexistent").
running chrome
Error: An element could not be located on the page using the given search parameters ("#nonexistent").
    at isExisting() - at Object.<anonymous> (spec.js:3:44)

Test results on v4.6.2:

․

1 passing (4.60s)

Link to Selenium/WebdriverIO logs

https://gist.github.com/selenetelenav/74ba5f0df9684b0d35fff8f51c56572f

Code To Reproduce Issue [ Good To Have ]

(included in details)

[selenetelenav]

Looking into this some more, it seems like the issue is actually in browser.element(). In 4.6.2 it did not raise an error for a nonexistent selector, so calling .isExisting() worked. In 4.7.0 it seems to raise an error so .isExisting() never gets called.

[christian-bromann]

@selenetelenav thanks for reporting. The error lies here. Lemme try to fix this.

[christian-bromann]

@selenetelenav fixed issue. Publish v4.7.1 if I get a green build

[christian-bromann]

Fixed and published in v4.7.1. Thanks for reporting!