cleanup & fix ci (#82)

* cleanup readme & examples
* upgrade go version
* add makefile with basic commands
* add e2e test
* add gha
* update .gitignore

e2e/transcoding_test.go

@@ -0,0 +1,104 @@
+package test
+
+import (
+	"io/ioutil"
+	"os/exec"
+	"path"
+	"sync"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+
+	"github.com/xfrr/goffmpeg/transcoder"
+)
+
+const (
+	fixturePath = "./fixtures"
+	resultsPath = "./test_results"
+)
+
+var (
+	// Input files
+	input3gp = path.Join(fixturePath, "input.3gp")
+)
+
+func TestInputNotFound(t *testing.T) {
+	createResultsDir(t)
+	var outputPath = path.Join(resultsPath, "notfound.mp4")
+
+	trans := new(transcoder.Transcoder)
+
+	err := trans.Initialize("notfound.3gp", outputPath)
+	assert.NotNil(t, err)
+}
+
+func TestTranscodingProgress(t *testing.T) {
+	createResultsDir(t)
+
+	outputPath := path.Join(resultsPath, "progress.mp4")
+	trans := new(transcoder.Transcoder)
+
+	err := trans.Initialize(input3gp, outputPath)
+	assert.Nil(t, err)
+
+	errCh := trans.Run(true)
+
+	progress := []transcoder.Progress{}
+	for val := range trans.Output() {
+		progress = append(progress, val)
+	}
+	err = <-errCh
+	assert.Nil(t, err)
+	assert.GreaterOrEqual(t, len(progress), 1)
+	checkFileExists(t, outputPath)
+}
+
+func TestTranscodePipes(t *testing.T) {
+	createResultsDir(t)
+
+	c1 := exec.Command("cat", input3gp)
+
+	trans := new(transcoder.Transcoder)
+
+	err := trans.InitializeEmptyTranscoder()
+	assert.Nil(t, err)
+
+	w, err := trans.CreateInputPipe()
+	assert.Nil(t, err)
+	c1.Stdout = w
+
+	r, err := trans.CreateOutputPipe("mp4")
+	assert.Nil(t, err)
+
+	wg := &sync.WaitGroup{}
+	wg.Add(1)
+	go func() {
+		_, err := ioutil.ReadAll(r)
+		assert.Nil(t, err)
+
+		r.Close()
+		wg.Done()
+	}()
+
+	go func() {
+		err := c1.Run()
+		assert.Nil(t, err)
+		w.Close()
+	}()
+	done := trans.Run(false)
+	err = <-done
+	assert.Nil(t, err)
+
+	wg.Wait()
+}
+
+func createResultsDir(t *testing.T) {
+	err := exec.Command("mkdir", "-p", resultsPath).Run()
+	assert.Nil(t, err)
+}
+
+func checkFileExists(t *testing.T, filepath string) {
+	res, err := exec.Command("cat", filepath).Output()
+	assert.Nil(t, err)
+	assert.Greater(t, len(res), 0)
+}