expect_error fails for java Exceptions

[pfistfl]

since version 2.3.0, tests that check for java Exceptions fail.

On 2.2.0:
remotes::install_version("testthat", "2.2.0")

library(rJava)
library(testthat)
.jinit()
.jnew("hello/world", check = TRUE)
#> Error in .jnew("hello/world", check = TRUE): java.lang.ClassNotFoundException

expect_error(.jnew("hello/world", check = TRUE))

^{Created on 2019-11-08 by the reprex package (v0.3.0)}

On 2.3.0:
remotes::install_version("testthat", "2.3.0")

library(rJava)
library(testthat)
.jinit()
.jnew("hello/world", check = TRUE)
#> Error in .jnew("hello/world", check = TRUE): java.lang.ClassNotFoundException

expect_error(.jnew("hello/world", check = TRUE))
#> Error in ._jobjRef_dollar(x[["jobj"]], name): no field, method or inner class called 'trace'

^{Created on 2019-11-08 by the reprex package (v0.3.0)}

I digged a little deeper, and the reason is most likely that rlang::cnd_entrace used in capture_error tries to access the $trace slot, which does prompt a java Error.

Is there another method intended to test for Exceptions?

[hadley]

This is a known bug and we're hoping to get a fix out next week.

[lionel-]

Fixed by #966.