Fix flaky TestStackRemove test.

Signed-off-by: Daniel Nephin <dnephin@docker.com>

integration-cli/docker_cli_stack_test.go

@@ -11,6 +11,7 @@ import (
 
 	"github.com/docker/docker/api/types/swarm"
 	"github.com/docker/docker/integration-cli/checker"
+	icmd "github.com/docker/docker/pkg/testutil/cmd"
 	"github.com/go-check/check"
 )
 
@@ -111,18 +112,24 @@ func (s *DockerSwarmSuite) TestStackRemove(c *check.C) {
 		"--compose-file", "fixtures/deploy/remove.yaml",
 		stackName,
 	}
-	out, err := d.Cmd(stackArgs...)
+	result := icmd.RunCmd(d.Command(stackArgs...))
-	c.Assert(err, checker.IsNil, check.Commentf(out))
+	result.Assert(c, icmd.Expected{
+		Err: icmd.None,
+		Out: "Creating service testdeploy_web",
+	})
 
-	out, err = d.Cmd("stack", "ps", stackName)
+	result = icmd.RunCmd(d.Command("service", "ls"))
-	c.Assert(err, checker.IsNil)
+	result.Assert(c, icmd.Success)
-	c.Assert(strings.Split(strings.TrimSpace(out), "\n"), checker.HasLen, 2)
+	c.Assert(
+		strings.Split(strings.TrimSpace(result.Stdout()), "\n"),
+		checker.HasLen, 2)
 
-	out, err = d.Cmd("stack", "rm", stackName)
+	result = icmd.RunCmd(d.Command("stack", "rm", stackName))
-	c.Assert(err, checker.IsNil, check.Commentf(out))
+	result.Assert(c, icmd.Success)
-	c.Assert(out, checker.Contains, "Removing service testdeploy_web")
+	stderr := result.Stderr()
-	c.Assert(out, checker.Contains, "Removing network testdeploy_default")
+	c.Assert(stderr, checker.Contains, "Removing service testdeploy_web")
-	c.Assert(out, checker.Contains, "Removing secret testdeploy_special")
+	c.Assert(stderr, checker.Contains, "Removing network testdeploy_default")
+	c.Assert(stderr, checker.Contains, "Removing secret testdeploy_special")
 }
 
 type sortSecrets []swarm.SecretReference

integration-cli/fixtures/deploy/remove.yaml

@@ -2,7 +2,7 @@
 version: "3.1"
 services:
   web:
-    image: busybox@sha256:e4f93f6ed15a0cdd342f5aae387886fba0ab98af0a102da6276eaf24d6e6ade0
+    image: busybox:latest
     command: top
     secrets:
       - special