I have some Go tests that depend on some external code which has init() methods that registers mysql drivers. My code also needs to register mysql drivers and I therefore end up with a panic and the error "Register called twice for driver mysql" when running my tests.
It seems that the repo I'm dependent on has a vendors directory with the driver in it ("vendors/github.com/go-sql-driver/mysql"). It seems that when I run my tests the init() methods in the driver are called and registers the mysql driver causing the clash.
The best option I can see would be to copy the dependency to my own vendors directory and remove the mysql driver from the dependency's vendor directory. However I'm not keen on this as it involves duplicating my dependency and then modifying it by deleting files. Also, I'm only dependent on this for running tests so I'm not sure I should be moving it to my vendors directory any way.
Is there a way to prevent init() being called on a dependency's vendor dependencies?