add test

pkg/sources/sources_test.go

@@ -0,0 +1,14 @@
+package sources
+
+import (
+	"testing"
+	"unsafe"
+
+	"github.com/stretchr/testify/assert"
+)
+
+// TestChunkSize ensures that the Chunk struct does not exceed 80 bytes.
+func TestChunkSize(t *testing.T) {
+	t.Parallel()
+	assert.Equal(t, unsafe.Sizeof(Chunk{}), uintptr(80), "Chunk struct size exceeds 80 bytes")
+}