setValue method in Nightwatch is not working

问题

I am trying to setup a new Nightwatch project for the purpose of automating a simple Google search page. My assert for searchbox present on page passes, but I am not able to perform any mouse/keyboard action on the elements (Searchbox, or SearchButton)

Note: I am running Nightwatch version 1.0.

Test case:

module.exports = {
  before : function(browser) {
   browser.globals.waitForConditionTimeout = 5000;
  },
    tags: ['google'],
    'Demo test Google' : function (browser) {
         browser 
         .url('http://www.google.com') // Go to a url
         .waitForElementVisible('body', 10000) // wait till page loads
         .pause(2000)
         .assert.title('Google') // Make sure Site title matches
         .assert.visible('input[name=q]') 
         .setValue('input[name=q]', 'nightwatchjs') // send values
         .click('button[name=btnG]') // click on search box
         .pause(1000)
         .end()
       },
};

I have also tried with this approach:

var setValue =  function(sel, value) {
  $(sel).val(value).change();
};

module.exports = {
  before : function(browser) {
       browser.globals.waitForConditionTimeout = 5000;
  },
    tags: ['google'],
    'Demo test Google' : function (browser) {
         browser 
         .url('http://www.google.com') // Go to a url
         .waitForElementVisible('body', 10000) // wait till page loads
         .pause(2000)
         .assert.title('Google') // Make sure Site title matches
         .assert.visible('input[name=q]') 
         .execute(setValue, ['input[name=q]', 'nightwatchjs'])
         .click('button[name=btnG]') // click on search box
         .pause(1000)
         .end()
       },
};

This is the output log:

[Google] Test Suite

Running: Demo test Google

• √ Element was visible after 133 milliseconds.
• √ Testing if the page title equals "Google" - 18 ms.
• √ Testing if element is visible - 61 ms.

Error log:

Error while running .setElementValue() protocol action: unknown error: call function result missing 'value'

TimeoutError: An error occurred while running .setValue() command on : {"status":-1, "state":"", "value": {"message":"unknown error: call function result missing 'value'", "error":[" (Session info: chrome=77.0.3865.120)"," (Driver info: chromedriver=2.33.506120 (e3e53437346286c0bc2d2dc9aa4915ba81d9023f),platform=Windows NT 10.0.17763 x86_64)"]},"errorStatus":13,"error":"unknown error: call function result missing 'value'","httpStatusCode":200} at process._tickCallback (internal/process/next_tick.js:68:7) NoSuchElementError: An error occurred while running .click() command on : at process._tickCallback (internal/process/next_tick.js:68:7)

回答1:

Try to click() on input first, and then use setValue(), sometimes it helps

来源：https://stackoverflow.com/questions/58437187/setvalue-method-in-nightwatch-is-not-working