Add a prepare to parse step to CompilerDispatcherJob

test/unittests/compiler-dispatcher/compiler-dispatcher-job-unittest.cc

Index: test/unittests/compiler-dispatcher/compiler-dispatcher-job-unittest.cc
diff --git a/test/unittests/compiler-dispatcher/compiler-dispatcher-job-unittest.cc b/test/unittests/compiler-dispatcher/compiler-dispatcher-job-unittest.cc
index 5b4ea7f3d7191c46d77020d1dc019e1b78521379..a2b7c8f0e27015ec31132472a0b274ab6881530c 100644
--- a/test/unittests/compiler-dispatcher/compiler-dispatcher-job-unittest.cc
+++ b/test/unittests/compiler-dispatcher/compiler-dispatcher-job-unittest.cc
@@ -20,5 +20,15 @@ TEST_F(CompilerDispatcherJobTest, Construct) {
       new CompilerDispatcherJob(i_isolate, i_isolate->object_function()));
 }
 
+TEST_F(CompilerDispatcherJobTest, PrepareToParse) {
+  Isolate* i_isolate = reinterpret_cast<Isolate*>(isolate());
+  std::unique_ptr<CompilerDispatcherJob> job(
+      new CompilerDispatcherJob(i_isolate, i_isolate->object_function()));
+
+  ASSERT_TRUE(job->status() == CompileJobStatus::kInitial);
+  job->PrepareToParseOnMainThread();
+  ASSERT_TRUE(job->status() == CompileJobStatus::kReadyToParse);
+}
+
 }  // namespace internal
 }  // namespace v8