package volume import ( "io" "testing" "github.com/docker/cli/internal/test" "gotest.tools/v3/assert" ) func TestUpdateCmd(t *testing.T) { cmd := newUpdateCommand( test.NewFakeCli(&fakeClient{}), ) cmd.SetArgs([]string{}) cmd.SetOut(io.Discard) cmd.SetErr(io.Discard) err := cmd.Execute() assert.ErrorContains(t, err, "requires 1 argument") }