DockerCLI/cli/command/swarm/leave_test.go

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package swarm
import (
"io/ioutil"
"strings"
"testing"
"github.com/docker/cli/internal/test"
"github.com/docker/cli/internal/test/testutil"
"github.com/pkg/errors"
"github.com/stretchr/testify/assert"
)
func TestSwarmLeaveErrors(t *testing.T) {
testCases := []struct {
name string
args []string
swarmLeaveFunc func() error
expectedError string
}{
{
name: "too-many-args",
args: []string{"foo"},
expectedError: "accepts no arguments",
},
{
name: "leave-failed",
swarmLeaveFunc: func() error {
return errors.Errorf("error leaving the swarm")
},
expectedError: "error leaving the swarm",
},
}
for _, tc := range testCases {
cmd := newLeaveCommand(
test.NewFakeCli(&fakeClient{
swarmLeaveFunc: tc.swarmLeaveFunc,
}))
cmd.SetArgs(tc.args)
cmd.SetOutput(ioutil.Discard)
testutil.ErrorContains(t, cmd.Execute(), tc.expectedError)
}
}
func TestSwarmLeave(t *testing.T) {
cli := test.NewFakeCli(&fakeClient{})
cmd := newLeaveCommand(cli)
assert.NoError(t, cmd.Execute())
assert.Equal(t, "Node left the swarm.", strings.TrimSpace(cli.OutBuffer().String()))
}