more tests + small refactoring (no more App struct)

app/converter/file/file_test.go

@@ -0,0 +1,52 @@
+package file
+
+import (
+	"bytes"
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func TestNewFile(t *testing.T) {
+	workingDir := "test"
+	os.Mkdir(workingDir, 0666)
+
+	// case 1: uses an empty reader.
+	if _, err := NewFile(workingDir, new(bytes.Buffer)); err == nil {
+		t.Error("File should not have been instantiated!")
+	}
+
+	// case 2: uses a reader from a wrong file type.
+	path, _ := filepath.Abs("../../../_tests/configurations/gotenberg.yml")
+	r, _ := os.Open(path)
+	defer r.Close()
+	if _, err := NewFile(workingDir, r); err == nil {
+		t.Error("File should not have been instantiated!")
+	}
+
+	// case 3: uses a reader from a correct file type.
+	path, _ = filepath.Abs("../../../_tests/file.pdf")
+	r, _ = os.Open(path)
+	defer r.Close()
+	if _, err := NewFile(workingDir, r); err != nil {
+		t.Error("File should have been instantiated!")
+	}
+
+	os.RemoveAll(workingDir)
+}
+
+func TestReworkFilePath(t *testing.T) {
+	workingDir := "test"
+	os.Mkdir(workingDir, 0666)
+
+	f := &File{
+		Path: MakeFilePath(workingDir),
+		Type: 999,
+	}
+
+	if _, err := reworkFilePath(workingDir, f); err == nil {
+		t.Error("It should not have been able to found the file extension!")
+	}
+
+	os.RemoveAll(workingDir)
+}