Add coverage of adding srcref info to traceback

Author: thomasp85

tests/testthat/_snaps/hooks.md

@@ -29,12 +29,12 @@
       ERROR non-numeric argument to binary operator
     Code
       writeLines(eval_outside("log_errors(traceback = TRUE)",
-        "f<-function() stop(\"TEST\"); f()"))
+        "source(\"helper.R\", keep.source = TRUE)", "function_that_fails()"))
     Output
-      ERROR TEST
+      ERROR I'm failing
       ERROR Traceback:
-      ERROR 2: stop("TEST")
-      ERROR 1: f()
+      ERROR 2: stop("I'm failing") at helper.R #41
+      ERROR 1: function_that_fails()
 
 # shiny input initialization is detected
 

tests/testthat/helper.R

@@ -35,3 +35,8 @@ eval_outside <- function(...) {
   suppressWarnings(system2(path, input, stdout = TRUE, stderr = TRUE))
   readLines(output)
 }
+
+# This function is needed to test traceback logging
+function_that_fails <- function() {
+  stop("I'm failing")
+}

tests/testthat/test-hooks.R

@@ -15,7 +15,7 @@ test_that("log_errors", {
     writeLines(eval_outside("log_errors()", "stop(42)"))
     writeLines(eval_outside("log_errors()", "foobar"))
     writeLines(eval_outside("log_errors()", 'f<-function(x) {42 * "foobar"}; f()'))
-    writeLines(eval_outside("log_errors(traceback = TRUE)", 'f<-function() stop("TEST"); f()'))
+    writeLines(eval_outside("log_errors(traceback = TRUE)", 'source("helper.R", keep.source = TRUE)', "function_that_fails()"))
   })
 })