Better implementation to test if connection to db is active

[richardxia]

Hi @cbliard and @booleanbetrayal, I hope you don't mind me submitting a pull request for a commit that you added, @cbliard. I was running into the same issue as #814, and in fact am running into the problem described in #814 (comment) regarding Postgres. I'd greatly appreciate it if we could merge this into master so that I don't have to set up a real Postgres database in my Docker image building environment, which is the only way I can currently work around the issue.

[emcgee]

Quick 👍 bump. Any chance this could get merged?

[booleanbetrayal]

Thanks @richardxia

[AbdullahAli]

Can you please make a release for this? The latest release is back in May and does not include this change

[zachfeldman]

@lynndylanhurley is working on it

[chandranshu12]

Our team has been running into this issue for a while now with MySql. Basically the ActiveRecord::NoDatabaseError in case of MySql is only raised if the user is authorized to connect but the db is not found. On the build server where the Docker image is built, there is no mysql server to even connect to and the exception raised is an instance of MySql2::Error which is of course not handled in the current version. This merge request handles that as well. Please merge.

[zachfeldman]

Hey @chandranshu12 this has been merged. You can use the master branch instead of what's on Rubygems if you'd like