From 89e34e6618a55622b433587b2033004db1d47caa Mon Sep 17 00:00:00 2001
From: Yaron Keren <yaron.keren@gmail.com>
Date: Tue, 11 Aug 2015 17:35:49 +0000
Subject: [PATCH] Add SmallString test trying to exercise the realloc() code
 path by allocating a small size (will go through malloc) and then large size.

llvm-svn: 244637
---
 unittests/ADT/SmallStringTest.cpp | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/unittests/ADT/SmallStringTest.cpp b/unittests/ADT/SmallStringTest.cpp
index 9398e99c911..995ef8e8127 100644
--- a/unittests/ADT/SmallStringTest.cpp
+++ b/unittests/ADT/SmallStringTest.cpp
@@ -159,6 +159,17 @@ TEST_F(SmallStringTest, Count) {
   EXPECT_EQ(0U, theString.count("zz"));
 }
 
+TEST_F(SmallStringTest, Realloc) {
+  theString = "abcd";
+  theString.reserve(100);
+  EXPECT_EQ("abcd", theString);
+  unsigned const N = 100000;
+  theString.reserve(N);
+  for (unsigned i = 0; i < N - 4; ++i)
+    theString.push_back('y');
+  EXPECT_EQ("abcdyyy", theString.slice(0, 7));
+}
+
 TEST(StringRefTest, Comparisons) {
   EXPECT_EQ(-1, SmallString<10>("aab").compare("aad"));
   EXPECT_EQ( 0, SmallString<10>("aab").compare("aab"));