Fix csharp-restsharp user agent header issue

[ttzztztz]

I fixed issue #158 by changing the C# RestSharp API .

As He says, the

request.AddHeader("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:72.0) Gecko/20100101 Firefox/72.0");

doesn't work and will be overwritten to a default UA, the official solution is to use

client.UserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:72.0) Gecko/20100101 Firefox/72.0";

Instead of Add Header.

So I just fix it by checking whether a Header's key equals to User-Agent, If so, output the client.UserAgent = "...", otherwise, output the request.AddHeader(..., ...).

So It will work and fix the issues.

@shreys7 I added an extra unit test for my fix. This is my first time contributing to the open source community, thank you for your guidance!

[shreys7]

Hey @ttzztztz , you need not create a new PR for adding a unit test for the fix. You can add it to your branch and the PR will be updated the latest changes.

[ttzztztz]

Hey @ttzztztz , you need not create a new PR for adding a unit test for the fix. You can add it to your branch and the PR will be updated the latest changes.

Oh, Got it ! Thank you for your notice!

[umeshp7]

Re-run tests.
waiting for tests to pass.

[umeshp7]

@ttzztztz There are some Linting issues. https://travis-ci.com/postmanlabs/postman-code-generators/builds/151242717#L4262

[umeshp7]

Some lint issues found after running tests needs resolving before this can be merged.

Tests failing.

[ttzztztz]

@shreys7 Hello, I updated my codes and it passed the unit test and lint check. Could you please review it again? Thank you!

[shreys7]

Hey @ttzztztz , could you mark @umeshp7's review comments as resolved? It's good to go then.

[ttzztztz]

@shreys7 Already marked. Thank you for your approval.