Avoid shadowing message in autoprint tests (#7446)

* Avoid shadowing message in autoprint tests

  Comparing ‘autoprint.Rout’ to ‘autoprint.Rout.save’ ...4,10d3
<
< Attaching package: 'data.table'
<
< The following object is masked from 'package:base':
<
<     %notin%
<

* Suppress conflict messages on new enough R-devel

Unfortunately, require(data.table, exclude="%notin") requires R >= 3.6.

* Just disable warn.conflicts for now

* link issue directly

* link issue directly

---------

Co-authored-by: Michael Chirico <[email protected]>

Author: aitap

tests/autoprint.R

@@ -1,4 +1,5 @@
-require(data.table)
+# TODO(#7453): re-enable warn.conflicts
+require(data.table, warn.conflicts=FALSE)
 # Tests the suppression of := output
 # Since this tests autoprinting at the console, it needs to use the .Rout.save mechanism in R CMD check
 DT = data.table(a=1:2)                # Should print at console?

tests/autoprint.Rout.save

@@ -15,8 +15,8 @@ Type 'demo()' for some demos, 'help()' for on-line help, or
 'help.start()' for an HTML browser interface to help.
 Type 'q()' to quit R.
 
-> require(data.table)
-Loading required package: data.table
+> # TODO(#7453): re-enable warn.conflicts
+> require(data.table, warn.conflicts=FALSE)
 > # Tests the suppression of := output
 > # Since this tests autoprinting at the console, it needs to use the .Rout.save mechanism in R CMD check
 > DT = data.table(a=1:2)                # Should print at console?