[tests] Add skeletton for integration tests

tests/simple_test.go

+package tests
+
+import (
+	"io/ioutil"
+	"os"
+	"testing"
+	"time"
+
+	"github.com/bmizerany/assert"
+)
+
+func TestSimple(t *testing.T) {
+	// Start the platform
+	workingDir, err := ioutil.TempDir("", "dfss_")
+	assert.Equal(t, nil, err)
+	cmd, ca, err := StartPlatform(workingDir)
+	assert.Equal(t, nil, err)
+
+	time.Sleep(3 * time.Second)
+
+	// Start a client
+	_, err = CreateClient(workingDir, ca)
+	assert.Equal(t, nil, err)
+
+	// Shutdown
+	err = cmd.Process.Kill()
+	assert.Equal(t, nil, err)
+
+	// Cleanup
+	_ = os.RemoveAll(workingDir)
+}

tests/starters.go

+package tests
+
+import (
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strconv"
+)
+
+const testPort = "9090"
+
+var currentClient = 0
+
+// StartPlatform creates root certificate for the platform and starts the platform.
+func StartPlatform(tmpDir string) (*exec.Cmd, []byte, error) {
+	path := filepath.Join(os.Getenv("GOPATH"), "bin", "dfssp")
+	db := os.Getenv("DFSS_MONGO_URI")
+	if db == "" {
+		db = "mongodb://localhost/dfss"
+	}
+
+	// Create temporary directory for platform
+	dir, err := ioutil.TempDir(tmpDir, "p_")
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// Init
+	cmd := exec.Command(path, "-cn", "localhost", "-path", dir, "-v", "init")
+	err = cmd.Run()
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// Get root certificate
+	ca, err := ioutil.ReadFile(filepath.Join(dir, "dfssp_rootCA.pem"))
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// Start
+	cmd = exec.Command(path, "-db", db, "-path", dir, "-p", testPort, "-v", "start")
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	err = cmd.Start()
+
+	return cmd, ca, err
+}
+
+// CreateClient creates a new working directory for a client, creating ca.pem.
+// It returns a ready-to-run command, but you probably want to change the last argument of the command.
+func CreateClient(tmpDir string, ca []byte) (*exec.Cmd, error) {
+	path := filepath.Join(os.Getenv("GOPATH"), "bin", "dfssc")
+
+	// Create temporary directory for client
+	clientID := strconv.Itoa(currentClient)
+	currentClient++
+	dir, err := ioutil.TempDir(tmpDir, "c"+clientID+"_")
+	if err != nil {
+		return nil, err
+	}
+
+	caPath := filepath.Join(dir, "ca.pem")
+	certPath := filepath.Join(dir, "cert.pem")
+	keyPath := filepath.Join(dir, "key.pem")
+
+	// Write the CA
+	err = ioutil.WriteFile(caPath, ca, os.ModePerm)
+	if err != nil {
+		return nil, err
+	}
+
+	// Prepare the client command.
+	// The last argument is up to you!
+	cmd := exec.Command(path, "-ca", caPath, "-cert", certPath, "-host", "localhost:"+testPort, "-key", keyPath, "-v", "CHANGE_ME")
+
+	return cmd, nil
+}