feat: file_save_disk, file_delete, file_serve, upload_parse, upload_handler, thumbnail_generate (issue 0014 fase 3)

functions/infra/file_save_disk_test.go

@@ -0,0 +1,62 @@
+package infra
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+func TestFileSaveDisk(t *testing.T) {
+	t.Run("guarda contenido en baseDir con nombre UUID", func(t *testing.T) {
+		dir := t.TempDir()
+		body := strings.NewReader("hello world")
+		got, err := FileSaveDisk(dir, "saludos.txt", body)
+		if err != nil {
+			t.Fatalf("FileSaveDisk err: %v", err)
+		}
+		if got.Filename != "saludos.txt" {
+			t.Errorf("got Filename %q, want saludos.txt", got.Filename)
+		}
+		if !strings.HasSuffix(got.StoredName, ".txt") {
+			t.Errorf("got StoredName %q, want suffix .txt", got.StoredName)
+		}
+		if !strings.HasPrefix(got.Path, dir) {
+			t.Errorf("got Path %q, want prefix %q", got.Path, dir)
+		}
+		if got.Size != int64(len("hello world")) {
+			t.Errorf("got Size %d, want %d", got.Size, len("hello world"))
+		}
+
+		data, err := os.ReadFile(got.Path)
+		if err != nil {
+			t.Fatalf("ReadFile: %v", err)
+		}
+		if string(data) != "hello world" {
+			t.Errorf("contenido en disco %q, want %q", data, "hello world")
+		}
+	})
+
+	t.Run("crea baseDir si no existe", func(t *testing.T) {
+		base := filepath.Join(t.TempDir(), "nested", "uploads")
+		body := strings.NewReader("x")
+		got, err := FileSaveDisk(base, "a.png", body)
+		if err != nil {
+			t.Fatalf("FileSaveDisk err: %v", err)
+		}
+		if _, err := os.Stat(got.Path); err != nil {
+			t.Fatalf("archivo no escrito: %v", err)
+		}
+	})
+
+	t.Run("infiere ContentType desde la extension", func(t *testing.T) {
+		dir := t.TempDir()
+		got, err := FileSaveDisk(dir, "logo.png", strings.NewReader("x"))
+		if err != nil {
+			t.Fatalf("err: %v", err)
+		}
+		if !strings.HasPrefix(got.ContentType, "image/png") {
+			t.Errorf("got ContentType %q, want image/png prefix", got.ContentType)
+		}
+	})
+}