buffer.h: Only allow Init() to be called once.

Change-Id: I041c8b6f314802833c5287a176dbfeec9461b08e

diff --git a/test/buffer.h b/test/buffer.h
index 8fbab227018e25037a9f8c158f996115191c9633..ec4dfbe7b11b0bdd3c56c72ba6f102f335310dfe 100644 (file)
--- a/test/buffer.h
+++ b/test/buffer.h
@@ -95,6 +95,7 @@ class Buffer {
   bool CheckValues(const Buffer<T> &a) const;
 
   bool Init() {
+    if (raw_buffer_ != NULL) return false;
     EXPECT_GT(width_, 0);
     EXPECT_GT(height_, 0);
     EXPECT_GE(top_padding_, 0);