first commit

internal/db/db_test.go

@@ -0,0 +1,32 @@
+package db
+
+import (
+	"context"
+	"path/filepath"
+	"testing"
+)
+
+func TestOpenAndMigrate(t *testing.T) {
+	path := filepath.Join(t.TempDir(), "test.db")
+	d, err := Open(path)
+	if err != nil {
+		t.Fatalf("open: %v", err)
+	}
+	defer d.Close()
+
+	if err := d.Migrate(context.Background()); err != nil {
+		t.Fatalf("migrate: %v", err)
+	}
+	// Idempotent.
+	if err := d.Migrate(context.Background()); err != nil {
+		t.Fatalf("migrate twice: %v", err)
+	}
+	row := d.QueryRow(`SELECT COUNT(*) FROM schema_migrations`)
+	var n int
+	if err := row.Scan(&n); err != nil {
+		t.Fatalf("scan: %v", err)
+	}
+	if n < 1 {
+		t.Fatalf("expected migrations applied, got %d", n)
+	}
+}