Add a test for out-of-order closes.

Author: zenhack

alloc_test.go

@@ -0,0 +1,30 @@
+package notmuch
+
+// Copyright © 2015 The go.notmuch Authors. Authors can be found in the AUTHORS file.
+// Licensed under the GPLv3 or later.
+// See COPYING at the root of the repository for details.
+
+// This file contains tests that exercise the resource creation/reclamation model.
+
+import (
+	"testing"
+)
+
+// Basic test of the case where the user explicitly closes a parent object
+// before the child object. This is inevitable if Close is used at all; the
+// GC will close things child-first.
+func TestOutOfOrderClose(t *testing.T) {
+	db, err := Open(dbPath, DBReadOnly)
+	if err != nil {
+		t.Fatalf("Open(%q): unexpected error: %s", dbPath, err)
+	}
+
+	query := db.NewQuery("subject:\"Introducing myself\"")
+	threads, err := query.Threads()
+	if err != nil {
+		t.Fatalf("error getting the threads: %s", err)
+	}
+
+	db.Close()
+	threads.Close()
+}