[Tests] We should have interactive validation of required value for the "input" element
https://bugs.webkit.org/show_bug.cgi?id=95817

Reviewed by Kent Tamura.

This patch adds tests for required attribute handling on form
submission of input types. The test script is parametrized for
input type and expected type. Each test file simply call one test
script in common-interactive-validation-required.js.

The test script checks:
  - Don't submit form when required value isn't presented.
  - Submit form when required value is presented.

* fast/forms/date/date-interactive-validation-required-expected.txt: Added.
* fast/forms/date/date-interactive-validation-required.html: Added.
* fast/forms/datetime/datetime-interactive-validation-required-expected.txt: Added.
* fast/forms/datetime/datetime-interactive-validation-required.html: Added.
* fast/forms/datetimelocal/datetimelocal-interactive-validation-required-expected.txt: Added.
* fast/forms/datetimelocal/datetimelocal-interactive-validation-required.html: Added.
* fast/forms/month/month-interactive-validation-required-expected.txt: Added.
* fast/forms/month/month-interactive-validation-required.html: Added.
* fast/forms/number/number-interactive-validation-required-expected.txt: Added.
* fast/forms/number/number-interactive-validation-required.html: Added.
* fast/forms/resources/common-interactive-validation-required.js: Added.
* fast/forms/time/time-interactive-validation-required-expected.txt: Added.
* fast/forms/time/time-interactive-validation-required.html: Added.
* fast/forms/week/week-interactive-validation-required-expected.txt: Added.
* fast/forms/week/week-interactive-validation-required.html: Added.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@127564 268f45cc-cd09-0410-ab3c-d52691b4dbfc
15 files changed