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) } }