Selenium: after file upload can not get file size

Question

I use Selenium to test web app behaviour on file upload page. The goal of test is to check application validations on file selection.

I use webDriver.SendKeys (C#) on file input to simulate file upload, file is selected successfully, but fileInput.files[0].size (js) is always 0 (or undefined?) and app shows error "Do not upload empty files". File size is correct on manual testing.

Any suggestions, on how to solve the problem?

UPDATE Code details:

HTML

<input id="file-path" type="file" data-bind="attr: { accept: mimeTypes }, event: { change: onFileSelect }" />
<small id="file-path-error" class="field-validation-error" data-bind="validationMessage: file"></small>

JS (file edit model uses knockout)

this.file = ko.observable().extend({
    validation: [
      {
        validator: function(file) {
          // valid if no file or file size < 5Mb
          return !file || file.size < 5242880;
        },
        message: 'File size should be less than 5Mb'
      }, {
        validator: function(file) {
          // valid if no file or file size > 0
          return !file || file.size > 0;
        },
        message: 'Do not upload empty files'
      }
    ]
  });
this.onFileSelect = function(model, event) {
    var fileInput;    
    fileInput = event.target;
    if ((fileInput.files != null) && fileInput.files.length > 0) {
      _this.file(fileInput.files[0]);          
    } else {
      _this.file(null);
    }
  };

C#

webDriver.FindElement(By.Id("file-path")).SendKeys("C:\testFile.txt");
Assert.AreEqual(webDriver.FindElement(By.Id("file-path-error").Text,"");

Assertion always fails because file-path-error contains "Do not upload empty files" - that is the problem.

Selenium by itself cannot handle file uploads. Please show your code how you are doing this. — SiKing, Jul 23 '14 at 15:46

score 0 · Accepted Answer · edited May 23 '17 at 11:50

0

I was misleaded by answers on How to automate file upload in Internet Explorer using Selenium?

Discusstion on How to set a value to a file input in HTML? says that actually we can not upload files programmatically.

So there was no sence in expecting decent behaviour for such test.

edited May 23 '17 at 11:50

Community

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answered Jul 30 '14 at 09:52

blazkovicz

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Selenium: after file upload can not get file size

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