feat: funciones impuras migration_create, migration_up, migration_down, migration_status

Fase 2 del issue 0015. MigrationCreate (crea archivo .sql template con version auto-calculada), MigrationUp (aplica migraciones pendientes en transacciones individuales), MigrationDown (revierte ultimas N via down_sql de _migrations), MigrationGetStatus (cruza disco con BD, detecta orphaned). Tests de integracion: ciclo completo create->up->status->down->status. 26 tests, todos pasan. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-04-13 02:01:40 +02:00
parent ca15655268
commit 9b0e1f836d
13 changed files with 1166 additions and 0 deletions
@@ -0,0 +1,114 @@
+package infra
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+// TestMigrationIntegration covers the full create -> up -> status -> down -> status cycle.
+func TestMigrationIntegration(t *testing.T) {
+	t.Run("ciclo completo create up status down status", func(t *testing.T) {
+		db := openTestDB(t)
+		dir := t.TempDir()
+
+		// Step 1: Create migration files using MigrationCreate
+		path1, err := MigrationCreate(dir, "create_users")
+		if err != nil {
+			t.Fatalf("create 001 failed: %v", err)
+		}
+		path2, err := MigrationCreate(dir, "create_roles")
+		if err != nil {
+			t.Fatalf("create 002 failed: %v", err)
+		}
+
+		// Fill in actual SQL
+		sql1 := "-- 001_create_users.sql\n\n-- +up\nCREATE TABLE users (id TEXT PRIMARY KEY, name TEXT NOT NULL);\n\n-- +down\nDROP TABLE IF EXISTS users;\n"
+		if err := os.WriteFile(path1, []byte(sql1), 0o644); err != nil {
+			t.Fatalf("write sql1: %v", err)
+		}
+		sql2 := "-- 002_create_roles.sql\n\n-- +up\nCREATE TABLE roles (id TEXT PRIMARY KEY, label TEXT NOT NULL);\n\n-- +down\nDROP TABLE IF EXISTS roles;\n"
+		if err := os.WriteFile(path2, []byte(sql2), 0o644); err != nil {
+			t.Fatalf("write sql2: %v", err)
+		}
+
+		// Step 2: Parse and validate
+		content1, _ := os.ReadFile(filepath.Join(dir, "001_create_users.sql"))
+		content2, _ := os.ReadFile(filepath.Join(dir, "002_create_roles.sql"))
+		m1, err := MigrationParse("001_create_users.sql", string(content1))
+		if err != nil {
+			t.Fatalf("parse 001: %v", err)
+		}
+		m2, err := MigrationParse("002_create_roles.sql", string(content2))
+		if err != nil {
+			t.Fatalf("parse 002: %v", err)
+		}
+		validationErrs := MigrationValidate([]Migration{m1, m2})
+		if len(validationErrs) > 0 {
+			t.Fatalf("validate failed: %v", validationErrs)
+		}
+
+		// Step 3: Apply up
+		applied, err := MigrationUp(db, dir)
+		if err != nil {
+			t.Fatalf("up failed: %v", err)
+		}
+		if len(applied) != 2 {
+			t.Errorf("up: expected 2 applied, got %d", len(applied))
+		}
+
+		// Step 4: Check status — all applied
+		statuses, err := MigrationGetStatus(db, dir)
+		if err != nil {
+			t.Fatalf("status after up failed: %v", err)
+		}
+		if len(statuses) != 2 {
+			t.Errorf("status: expected 2, got %d", len(statuses))
+		}
+		for _, s := range statuses {
+			if !s.Applied {
+				t.Errorf("version %d should be applied", s.Version)
+			}
+		}
+
+		// Step 5: Revert the last migration
+		reverted, err := MigrationDown(db, 1)
+		if err != nil {
+			t.Fatalf("down failed: %v", err)
+		}
+		if len(reverted) != 1 || reverted[0].Version != 2 {
+			t.Errorf("down: expected version 2, got %v", reverted)
+		}
+
+		// Step 6: Check status — one applied, one pending
+		statuses2, err := MigrationGetStatus(db, dir)
+		if err != nil {
+			t.Fatalf("status after down failed: %v", err)
+		}
+		if len(statuses2) != 2 {
+			t.Errorf("status2: expected 2, got %d", len(statuses2))
+		}
+		// Version 1 should be applied, version 2 pending
+		for _, s := range statuses2 {
+			switch s.Version {
+			case 1:
+				if !s.Applied {
+					t.Errorf("version 1 should still be applied")
+				}
+			case 2:
+				if s.Applied {
+					t.Errorf("version 2 should be pending after down")
+				}
+			}
+		}
+
+		// Step 7: Re-apply — should apply version 2 again
+		applied2, err := MigrationUp(db, dir)
+		if err != nil {
+			t.Fatalf("second up failed: %v", err)
+		}
+		if len(applied2) != 1 || applied2[0].Version != 2 {
+			t.Errorf("second up: expected version 2, got %v", applied2)
+		}
+	})
+}