Do not depend on Plots.jl for testing

[giordano]

Plots.jl is a huge dependency. As far as I can see, in test/unit_plot.jl you are not even testing anything. I recommend you to look at what I do in Measurements.jl to test plotting functionalities simply using RecipesBase.jl, so that you can remove Plots.jl and actually test something meaningful.

[mforets]

Thanks for the tip @giordano, we'll consider it. In this library a full run of CI usually takes like ~40minutes on Travis 😫 So if this can reduce such runtimes while having some tests for the plotting stuff it would already be a win.

[schillic]

We also need Plots for the documentation. I am not sure that this would resolve #2098 (I just commented there).

[giordano]

In this library a full run of CI usually takes like ~40minutes on Travis tired_face So if this can reduce such runtimes while having some tests for the plotting stuff it would already be a win.

Well, not sure if it'll reduce sensibly from 40 minutes, but in a smaller project I was able to shave off 3 minutes per job by moving from Plots to RecipesBase

We also need Plots for the documentation.

That's one job out of the 5 total, no?

[giordano]

Also, consider caching artifacts in CI: https://discourse.julialang.org/t/recommendation-cache-julia-artifacts-in-ci-services/35484. That would help in jobs for Julia v1.3+

[mforets]

thanks @giordano for all the tips 💯