update unit tests after ggplot2 release

[tjmahr]

The change in ggplot2 to use tidy evaluation means quosures are used inside of ggplot2. Thus, this class of unit tests...

g <- mcmc_intervals(arr, rhat = r)
rhat_map <- g$layers[[3]][["mapping"]]
expect_identical(rhat_map$colour, as.name("rhat_rating"))
#> Error: rhat_map$colour not identical to as.name("rhat_rating").
#> target, current differ in having response: FALSE, FALSE

will fail because the former is a quosure and the latter is a name.

rhat_map$colour
#> <quosure>
#>   expr: ^rhat_rating
#>   env:  000000001DE45EF8
as.name("rhat_rating")
#> rhat_rating

But as far as I can tell, we can get the name with

rlang::get_expr(rhat_map$colour)
expect_identical(rlang::get_expr(rhat_map$colour), as.name("rhat_rating"))

---

Here are the first batch of errors...

test-mcmc-intervals.R:89: failure: mcmc_intervals/areas with rhat
rhat_map$colour not identical to as.name("rhat_rating").
target, current differ in having response: FALSE, FALSE

test-mcmc-intervals.R:98: failure: mcmc_intervals/areas with rhat
rhat_map2$fill not identical to as.name("rhat_rating").
target, current differ in having response: FALSE, FALSE

test-mcmc-intervals.R:99: failure: mcmc_intervals/areas with rhat
rhat_map2$colour not identical to as.name("rhat_rating").
target, current differ in having response: FALSE, FALSE

test-mcmc-intervals.R:105: failure: mcmc_intervals/areas with rhat
rhat_map4$colour not identical to as.name("rhat_rating").
target, current differ in having response: FALSE, FALSE

test-mcmc-intervals.R:109: failure: mcmc_intervals/areas with rhat
rhat_map5$colour not identical to as.name("rhat_rating").
target, current differ in having response: FALSE, FALSE

== Terminating early =================================================
Too many failures

[tjmahr]

Running the tests on a fresh install of R locally and got some errors for missing packages: vdiffr (these are skipped on CRAN, so that's okay), arm and hexbin. I'm just making a note here because in case we need to address these package dependencies on CRAN or travis.

[tjmahr]

The failing tests described above have been fixed.