Enhance expect exception tests

[peter279k]

Description

Changed log

• To support future PHPUnit 8.x versions about deprecated @expectedException warning message, using the expectException and expectExceptionMessage instead.
• Removing unused @throws annotation.
• Upgrading the PHPUnit 7.x version and it requires php-7.1 version at least.

The deprecated warning message is as follows:

 with data set "empty string" ('')
The @expectedException, @expectedExceptionCode, @expectedExceptionMessage, and @expectedExceptionMessageRegExp annotations are deprecated. They will be removed in PHPUnit 9. Refactor your test to use expectException(), expectExceptionCode(), expectExceptionMessage(), or expectExceptionMessageRegExp() instead.

The related issue is available here.

Manual testing scenarios

• Travis CI build will be passed.

Contribution checklist

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages

[shiftedreality]

Hello @peter279k

Thank you for your contribution! I've created internal task https://magento2.atlassian.net/browse/MAGECLOUD-4556 to process and merge your PR

[shiftedreality]

@peter279k PR overall looks good!

Please merge 1.0 branch and fix a conflict, so I can proceed with merging.

[peter279k]

@peter279k PR overall looks good!

Please merge 1.0 branch and fix a conflict, so I can proceed with merging.

Hi @shiftedreality, thanks for your reply.

Now I've resolved composer.json conflict from the 1.0 branch.

[shiftedreality]

Thanks a lot for your contribution!