tests/test_runner.sh: remove some redundancies

This wrapper doesn't need to load anything from helpers.bash, because
the various .bats files already do so on their own.

Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>

rpm/buildah.spec

@@ -133,6 +133,7 @@ export BUILDTAGS+=" btrfs_noversion exclude_graphdriver_btrfs"
 %gobuild -o bin/imgtype ./tests/imgtype
 %gobuild -o bin/copy ./tests/copy
 %gobuild -o bin/tutorial ./tests/tutorial
+%gobuild -o bin/inet ./tests/inet
 %{__make} docs
 
 %install

tests/inet/inet.go

@@ -149,6 +149,7 @@ func main() {
 			cmd := exec.Command(args[0], args[1:]...)
 			cmd.Stdin = stdinReader
 			cmd.Stdout = stdoutWriter
+			cmd.Stderr = os.Stderr
 			if err := cmd.Start(); err != nil {
 				logrus.Errorf("starting %v: %v", args, err)
 				closeCloser(stdinReader)

tests/test_runner.sh

@@ -7,16 +7,10 @@ cd "$(dirname "$(readlink -f "$BASH_SOURCE")")"
 # labels than /tmp, which is often on tmpfs.
 export TMPDIR=${TMPDIR:-/var/tmp}
 
-# Load the helpers.
-. helpers.bash
-
 function execute() {
 	>&2 echo "++ $@"
 	eval "$@"
 }
 
-# Tests to run. Defaults to all.
-TESTS=${@:-.}
-
 # Run the tests.
-execute time bats --tap $TESTS
+execute time bats --tap "${@:-.}"