Implement "Element Attribute Value Should Be"

[php-coder]

Element Attribute Value Should Be is implemented in Python version and it would be great to have this implemented in this library as well.

Related to #59

[YauheniPo]

I can develop this implementation or You can use getElementAttribute and validate on the test stage

[YauheniPo]

maybe this method will help you - 'waitUntilElementAttributeValueContains' from Element class

[php-coder]

maybe this method will help you - 'waitUntilElementAttributeValueContains' from Element class

Thanks, but as far I understand, I can't use it in the tests as this isn't a keyword.

[YauheniPo]

9844ad4#diff-915bf959e6977f82be056672ba12c8cf

This keyword was merged to develop branch, but it does not exist in the last maven dependency ((

[Hi-Fi]

That's true, latest release was made around one month before that merge. Reason why it's not at release (only SNAPSHOT) version is that there're some other fixes that I thought that could come to same release. And still do, so trying to find time to make those couple of fixes.

[Hi-Fi]

Keyword mentioned by @YauheniPo is included in 3.141.59.26535, and just also taken to Selenium 4 branch by rebasing (not released yet).