package docker import ( "io/ioutil" "os" "testing" ) func TestHostFromEnv(t *testing.T) { os.Setenv("DOCKER_HOST", "tcp://1.1.1.1:2375") defer os.Setenv("DOCKER_HOST", "") client := New() if client.proto != "tcp" { t.Fail() } if client.addr != "1.1.1.1:2375" { t.Fail() } } func TestInvalidHostFromEnv(t *testing.T) { os.Setenv("DOCKER_HOST", "tcp:1.1.1.1:2375") // missing tcp:// prefix defer os.Setenv("DOCKER_HOST", "") client := New() if client.addr == "1.1.1.1:2375" { t.Fail() } } func TestSocketHost(t *testing.T) { // create temporary file to represent the docker socket file, err := ioutil.TempFile("", "TestDefaultUnixHost") if err != nil { t.Fail() } file.Close() defer os.Remove(file.Name()) client := &Client{} client.setHost(file.Name()) if client.proto != "unix" { t.Fail() } if client.addr != file.Name() { t.Fail() } } func TestDefaultTcpHost(t *testing.T) { client := &Client{} client.setHost("/tmp/missing_socket") if client.proto != "tcp" { t.Fail() } if client.addr != "0.0.0.0:2375" { t.Fail() } }