paradox error on upgrade data.table

[mattdowle]

With 1.12.8 paradox passes cleanly. With 1.12.9, it fails as follows:

$ Rdevel CMD check paradox_0.3.0.tar.gz 
* using log directory ‘/home/mdowle/build/revdeplib/paradox.Rcheck’
* using R Under development (unstable) (2020-07-14 r78854)
* using platform: x86_64-pc-linux-gnu (64-bit)
* using session charset: UTF-8
* checking for file ‘paradox/DESCRIPTION’ ... OK
* checking extension type ... Package
* this is package ‘paradox’ version ‘0.3.0’
* package encoding: UTF-8
* checking package namespace information ... OK
* checking package dependencies ... OK
* checking if this is a source package ... OK
* checking if there is a namespace ... OK
* checking for executable files ... OK
* checking for hidden files and directories ... OK
* checking for portable file names ... OK
* checking for sufficient/correct file permissions ... OK
* checking whether package ‘paradox’ can be installed ... OK
* checking installed package size ... OK
* checking package directory ... OK
* checking DESCRIPTION meta-information ... OK
* checking top-level files ... OK
* checking for left-over files ... OK
* checking index information ... OK
* checking package subdirectories ... OK
* checking R files for non-ASCII characters ... OK
* checking R files for syntax errors ... OK
* checking whether the package can be loaded ... OK
* checking whether the package can be loaded with stated dependencies ... OK
* checking whether the package can be unloaded cleanly ... OK
* checking whether the namespace can be loaded with stated dependencies ... OK
* checking whether the namespace can be unloaded cleanly ... OK
* checking loading without being on the library search path ... OK
* checking dependencies in R code ... OK
* checking S3 generic/method consistency ... OK
* checking replacement functions ... OK
* checking foreign function calls ... OK
* checking R code for possible problems ... OK
* checking Rd files ... OK
* checking Rd metadata ... OK
* checking Rd cross-references ... OK
* checking for missing documentation entries ... OK
* checking for code/documentation mismatches ... OK
* checking Rd \usage sections ... OK
* checking Rd contents ... OK
* checking for unstated dependencies in examples ... OK
* checking examples ... OK
* checking for unstated dependencies in ‘tests’ ... OK
* checking tests ...
  Running ‘testthat.R’
 ERROR
Running the tests in ‘tests/testthat.R’ failed.
Last 13 lines of output:
  > if (requireNamespace("testthat", quietly = TRUE)) {
  +   library(testthat)
  +   library(paradox)
  +   test_check("paradox")
  + }
  ── 1. Failure: values (@test_param_vals.R#21)  ─────────────────────────────────
  `print\(ps2\)` does not match "d.*<NoDefault>.*0.5".
  Actual value: "<ParamSet>\\n   id    class lower upper levels        default value\\n1:  d ParamDbl     0     1        <NoDefault\[3\]>   0\.5\\n2:  i ParamInt     1     3        <NoDefault\[3\]>      "
  
  ══ testthat results  ═══════════════════════════════════════════════════════════
  [ OK: 735 | SKIPPED: 0 | WARNINGS: 0 | FAILED: 1 ]
  1. Failure: values (@test_param_vals.R#21) 
  
  Error: testthat unit tests failed
  Execution halted
* checking PDF version of manual ... OK
* DONE

Status: 1 ERROR
See
  ‘/home/mdowle/build/revdeplib/paradox.Rcheck/00check.log’
for details.

[MichaelChirico]

This is a broken test due to the change in printing behavior of list columns in #3671

Fixing now downstream

[MichaelChirico]

Filed downstream PR: mlr-org/paradox#291