New Sequence/Thread checking API.

base/sequence_checker_unittest.cc

Index: base/sequence_checker_unittest.cc
diff --git a/base/sequence_checker_unittest.cc b/base/sequence_checker_unittest.cc
index 41fd77be63ff7f053f8a6901b677903f6b05d4c3..d84e2d10051a7c5095cf8664f6b4dbf3ca19f21a 100644
--- a/base/sequence_checker_unittest.cc
+++ b/base/sequence_checker_unittest.cc
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "base/sequence_checker.h"
+
 #include <stddef.h>
 
 #include <memory>
@@ -12,9 +14,9 @@
 #include "base/callback_forward.h"
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
-#include "base/sequence_checker_impl.h"
 #include "base/sequence_token.h"
 #include "base/single_thread_task_runner.h"
+#include "base/test/gtest_util.h"
 #include "base/test/sequenced_worker_pool_owner.h"
 #include "base/threading/simple_thread.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ -256,4 +258,28 @@ TEST_F(SequenceCheckerTest,
   second_pool_owner.pool()->FlushForTesting();
 }
 
+TEST_F(SequenceCheckerTest, Macros) {
+  SEQUENCE_CHECKER(my_sequence_checker);
+
+  PostToSequencedWorkerPool(
+      Bind([](SequenceChecker* sequence_checker) {
+#if DCHECK_IS_ON()
+    EXPECT_DCHECK_DEATH({ DCHECK_CALLED_ON_VALID_SEQUENCE(*sequence_checker); });
+#else
+    // Happily no-ops on non-dcheck builds.
+    DCHECK_CALLED_ON_VALID_SEQUENCE(*sequence_checker);
+#endif
+  }, Unretained(&my_sequence_checker)), "A");
+  FlushSequencedWorkerPoolForTesting();
+
+  DETACH_FROM_SEQUENCE(my_sequence_checker);
+
+  PostToSequencedWorkerPool(
+      Bind([](SequenceChecker* sequence_checker) {
+    // Happily passes after detaching from original sequence.
+    DCHECK_CALLED_ON_VALID_SEQUENCE(*sequence_checker);
+  }, Unretained(&my_sequence_checker)), "A");
+  FlushSequencedWorkerPoolForTesting();
+}
+
 }  // namespace base