[logo] Test helper (#7289)

* [logo] Test helper

This will introduce TestHelper for logo with find_first_node_bytype() method

Signed-off-by: SaeHie Park <saehie.park@samsung.com>

* apply comments

1 files changed, 44 insertions, 0 deletions

diff --git a/compiler/logo/src/TestHelper.h b/compiler/logo/src/TestHelper.h
new file mode 100644
index 000000000..43631efa9
--- /dev/null
+++ b/compiler/logo/src/TestHelper.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2019 Samsung Electronics Co., Ltd. All Rights Reserved
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __TEST_HELPER_H__
+#define __TEST_HELPER_H__
+
+#include <loco.h>
+
+namespace logo
+{
+namespace test
+{
+
+template <typename T> T *find_first_node_by_type(loco::Graph *g)
+{
+  T *first_node = nullptr;
+
+  for (auto node : loco::postorder_traversal(loco::output_nodes(g)))
+  {
+    first_node = dynamic_cast<T *>(node);
+    if (first_node != nullptr)
+      break;
+  }
+
+  return first_node;
+}
+
+} // namespace test
+} // namespace logo
+
+#endif // __TEST_HELPER_H__