add a test

utils/nf-cmgg-sampletracking/nf-cmgg-sampletracking_test.go

@@ -0,0 +1,31 @@
+package main
+
+import (
+	"testing"
+)
+
+func TestFindFilesByExtension(t *testing.T) {
+	dir := "test-data"
+	extension := []string{".txt", ".csv"}
+
+	files, err := findFilesByExtension(dir, extension)
+	if err != nil {
+		t.Errorf("Error finding files: %v", err)
+	}
+
+	expectedFiles := []string{
+		"test-data/test1.txt",
+		"test-data/test2.csv",
+		// Add more expected file paths here
+	}
+
+	if len(files) != len(expectedFiles) {
+		t.Errorf("Expected %d files, but got %d", len(expectedFiles), len(files))
+	}
+
+	for i, file := range files {
+		if file != expectedFiles[i] {
+			t.Errorf("Expected file path %s, but got %s", expectedFiles[i], file)
+		}
+	}
+}