Build PTY test image

.circleci/config.yml

@@ -36,6 +36,7 @@ jobs:
       - run: ./build.sh ubuntu-systemd-xenial
       - run: ./build.sh no-entrypoint
       - run: ./build.sh ignore-signals
+      - run: ./build.sh pty
   ci-builder:
     docker:
       - image: docker:17.05.0-ce-git

executor/mock/standalone/standalone_test.go

@@ -61,6 +61,10 @@ var (
 		name: "titusoss/ignore-signals",
 		tag:  "20180501-1525157636",
 	}
+	pty = testImage{
+		name: "titusoss/pty",
+		tag:  "20180507-1525733149",
+	}
 )
 
 // This file still uses log as opposed to using the testing library's built-in logging framework.
@@ -88,6 +92,7 @@ func TestStandalone(t *testing.T) {
 		testMetadataProxyInjection,
 		testMetdataProxyDefaultRoute,
 		testTerminateTimeout,
+		testMakesPTY,
 	}
 	for _, fun := range testFunctions {
 		fullName := runtime.FuncForPC(reflect.ValueOf(fun).Pointer()).Name()
@@ -208,6 +213,18 @@ func testDefaultCapabilities(t *testing.T, jobID string) {
 	}
 }
 
+func testMakesPTY(t *testing.T, jobID string) {
+	ji := &mock.JobInput{
+		ImageName:  pty.name,
+		Version:    pty.tag,
+		Entrypoint: "/bin/bash -c '/usr/bin/unbuffer /usr/bin/tty | grep /dev/pts'",
+		JobID:      jobID,
+	}
+	if !mock.RunJobExpectingSuccess(ji, false) {
+		t.Fail()
+	}
+}
+
 func testStdoutGoesToLogFile(t *testing.T, jobID string) {
 	message := fmt.Sprintf("Some message with ID=%s, and a suffix.", uuid.New())
 	cmd := fmt.Sprintf(`sh -c 'echo "%[1]s" && sleep 1 && grep "%[1]s" /logs/stdout'`, message)

hack/test-images/pty/Dockerfile

@@ -0,0 +1,2 @@
+FROM ubuntu:xenial
+RUN apt-get update && apt-get install -y expect coreutils