expect_no_error() loses traceback #2334

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1. hadley commented on Sep 14, 2026

   

   hadley

   on Sep 14, 2026

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   Here's a reprex:

   library(testthat)
   
   f <- function() g()
   g <- function() stop("boom")
   
   # I want this:
   test_that("test", { 
     f()
   })
   # ── Error: test ───────────────
   # Error in `g()`: boom
   # Backtrace:
   #     ▆
   #  1. └─global f()
   #  2.   └─global g()
   
   # But I get this 
   test_that("test", { 
     expect_no_error(f())
   })
   # Expected `f()` not to throw any errors.
   # Actually got a <simpleError> with message:
   #  boom