initial version of cli integration tests

Docker-DCO-1.1-Signed-off-by: Cristian Staretu <cristian.staretu@gmail.com> (github: unclejack)

integration-cli/docker_cli_pull_test.go

@@ -0,0 +1,30 @@
+package main
+
+import (
+	"fmt"
+	"os/exec"
+	"testing"
+)
+
+// pulling an image from the central registry should work
+func TestPullImageFromCentralRegistry(t *testing.T) {
+	pullCmd := exec.Command(dockerBinary, "pull", "busybox")
+	out, exitCode, err := runCommandWithOutput(pullCmd)
+	errorOut(err, t, fmt.Sprintf("%s %s", out, err))
+
+	if err != nil || exitCode != 0 {
+		t.Fatal("pulling the busybox image from the registry has failed")
+	}
+	logDone("pull - pull busybox")
+}
+
+// pulling a non-existing image from the central registry should return a non-zero exit code
+func TestPullNonExistingImage(t *testing.T) {
+	pullCmd := exec.Command(dockerBinary, "pull", "fooblahblah1234")
+	_, exitCode, err := runCommandWithOutput(pullCmd)
+
+	if err == nil || exitCode == 0 {
+		t.Fatal("expected non-zero exit status when pulling non-existing image")
+	}
+	logDone("pull - pull fooblahblah1234 (non-existing image)")
+}