Fix sandbox chroot

Sandbox was setting chroot, but was not chaging the working
dir. Added test to ensure this doesn't happen in the future.

PiperOrigin-RevId: 215676270
Change-Id: I14352d3de64a4dcb90e50948119dc8328c9c15e1

1 files changed, 5 insertions, 9 deletions

diff --git a/runsc/test/image/image_test.go b/runsc/test/image/image_test.go
index 71d992115..341bdc1d5 100644
--- a/runsc/test/image/image_test.go
+++ b/runsc/test/image/image_test.go
@@ -12,17 +12,13 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-// Package image provides end-to-end image tests for runsc. These tests require
-// docker and runsc to be installed on the machine. To set it up, run:
-//
-//     ./runsc/test/install.sh [--runtime <name>]
-//
-// The tests expect the runtime name to be provided in the RUNSC_RUNTIME
-// environment variable (default: runsc-test).
-//
+// Package image provides end-to-end image tests for runsc.
+
 // Each test calls docker commands to start up a container, and tests that it is
 // behaving properly, like connecting to a port or looking at the output. The
 // container is killed and deleted at the end.
+//
+// Setup instruction in runsc/test/README.md.
 package image
 
 import (
@@ -307,7 +303,7 @@ func TestRuby(t *testing.T) {
 	}
 }
 
-func MainTest(m *testing.M) {
+func TestMain(m *testing.M) {
 	testutil.EnsureSupportedDockerVersion()
 	os.Exit(m.Run())
 }