Make test case more precise

Co-authored-by: Théophane Hufschmitt <regnat@users.noreply.github.com>
NixOS · Nov 9, 2020 · e3fe5c6 · e3fe5c6
1 parent 4f14917
commit e3fe5c6
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/tests/nix-shell.sh b/tests/nix-shell.sh
@@ -58,7 +58,7 @@ output=$($TEST_ROOT/shell.shebang.rb abc ruby)
 
 # Test 'nix develop'.
 nix develop -f shell.nix shellDrv -c bash -c '[[ -n $stdenv ]]'
-echo foo | nix develop -f shell.nix shellDrv -c cat  # preserve stdin with `-c`
+echo foo | nix develop -f shell.nix shellDrv -c cat  # preserve stdin with `-c` | grep -q foo
 
 # Test 'nix print-dev-env'.
 source <(nix print-dev-env -f shell.nix shellDrv)