DockerCLI/command/swarm/join_test.go

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package swarm
import (
"bytes"
"fmt"
"io/ioutil"
"strings"
"testing"
"github.com/docker/docker/api/types"
"github.com/docker/docker/api/types/swarm"
"github.com/docker/docker/cli/internal/test"
"github.com/docker/docker/pkg/testutil/assert"
)
func TestSwarmJoinErrors(t *testing.T) {
testCases := []struct {
name string
args []string
swarmJoinFunc func() error
infoFunc func() (types.Info, error)
expectedError string
}{
{
name: "not-enough-args",
expectedError: "requires exactly 1 argument",
},
{
name: "too-many-args",
args: []string{"remote1", "remote2"},
expectedError: "requires exactly 1 argument",
},
{
name: "join-failed",
args: []string{"remote"},
swarmJoinFunc: func() error {
return fmt.Errorf("error joining the swarm")
},
expectedError: "error joining the swarm",
},
{
name: "join-failed-on-init",
args: []string{"remote"},
infoFunc: func() (types.Info, error) {
return types.Info{}, fmt.Errorf("error asking for node info")
},
expectedError: "error asking for node info",
},
}
for _, tc := range testCases {
buf := new(bytes.Buffer)
cmd := newJoinCommand(
test.NewFakeCli(&fakeClient{
swarmJoinFunc: tc.swarmJoinFunc,
infoFunc: tc.infoFunc,
}, buf))
cmd.SetArgs(tc.args)
cmd.SetOutput(ioutil.Discard)
assert.Error(t, cmd.Execute(), tc.expectedError)
}
}
func TestSwarmJoin(t *testing.T) {
testCases := []struct {
name string
infoFunc func() (types.Info, error)
expected string
}{
{
name: "join-as-manager",
infoFunc: func() (types.Info, error) {
return types.Info{
Swarm: swarm.Info{
ControlAvailable: true,
},
}, nil
},
expected: "This node joined a swarm as a manager.",
},
{
name: "join-as-worker",
infoFunc: func() (types.Info, error) {
return types.Info{
Swarm: swarm.Info{
ControlAvailable: false,
},
}, nil
},
expected: "This node joined a swarm as a worker.",
},
}
for _, tc := range testCases {
buf := new(bytes.Buffer)
cmd := newJoinCommand(
test.NewFakeCli(&fakeClient{
infoFunc: tc.infoFunc,
}, buf))
cmd.SetArgs([]string{"remote"})
assert.NilError(t, cmd.Execute())
assert.Equal(t, strings.TrimSpace(buf.String()), tc.expected)
}
}