DockerCLI/e2e/stack/remove_test.go

90 lines
2.2 KiB
Go

package stack
import (
"fmt"
"strings"
"testing"
"time"
shlex "github.com/flynn-archive/go-shlex"
"github.com/gotestyourself/gotestyourself/golden"
"github.com/gotestyourself/gotestyourself/icmd"
"github.com/stretchr/testify/require"
)
func TestRemove(t *testing.T) {
stackname := "test-stack-remove"
deployFullStack(t, stackname)
defer cleanupFullStack(t, stackname)
result := icmd.RunCmd(shell(t, "docker stack rm %s", stackname))
result.Assert(t, icmd.Expected{Out: icmd.None})
golden.Assert(t, result.Stderr(), "stack-remove-success.golden")
}
func deployFullStack(t *testing.T, stackname string) {
// TODO: this stack should have full options not minimal options
result := icmd.RunCmd(shell(t,
"docker stack deploy --compose-file=./testdata/full-stack.yml %s", stackname))
result.Assert(t, icmd.Success)
waitOn(t, taskCount(stackname, 2), 0)
}
func cleanupFullStack(t *testing.T, stackname string) {
result := icmd.RunCmd(shell(t, "docker stack rm %s", stackname))
result.Assert(t, icmd.Success)
waitOn(t, taskCount(stackname, 0), 0)
}
func taskCount(stackname string, expected int) func() (bool, error) {
return func() (bool, error) {
result := icmd.RunCommand(
"docker", "stack", "ps", "-f=desired-state=running", stackname)
count := lines(result.Stdout()) - 1
return count == expected, nil
}
}
func lines(out string) int {
return len(strings.Split(strings.TrimSpace(out), "\n"))
}
// TODO: move to gotestyourself
func shell(t *testing.T, format string, args ...interface{}) icmd.Cmd {
cmd, err := shlex.Split(fmt.Sprintf(format, args...))
require.NoError(t, err)
return icmd.Cmd{Command: cmd}
}
// TODO: move to gotestyourself
func waitOn(t *testing.T, check func() (bool, error), timeout time.Duration) {
if timeout == time.Duration(0) {
timeout = defaultTimeout()
}
after := time.After(timeout)
for {
select {
case <-after:
// TODO: include check function name in error message
t.Fatalf("timeout hit after %s", timeout)
default:
// TODO: maybe return a failure message as well?
done, err := check()
if done {
return
}
if err != nil {
t.Fatal(err.Error())
}
}
}
}
func defaultTimeout() time.Duration {
// TODO: support override from environment variable
return 10 * time.Second
}