The command mix test --cover --export-coverage XXX exports the coverage data when using the default coverage tool of Elixir, but does not export anything when ExCoveralls is in use. This PR fixes this behavior. It makes ExCoverall work just like the standard Elixir tool.
Coverage: 89.184% (-1.4%) from 90.559% when pulling 6257f787a84eeb4bc207e658f3ac2ac6ec87c8b9 on sandorbedo:master into 4ab3cec634ebe18cd923f4552cd53e9d50349314 on parroty:master.
The command
mix test --cover --export-coverage XXX
exports the coverage data when using the default coverage tool of Elixir, but does not export anything when ExCoveralls is in use. This PR fixes this behavior. It makes ExCoverall work just like the standard Elixir tool.