Remove undefined behavior in goodMallocSize()

[folly.git] / folly / test / FBVectorTest.cpp

diff --git a/folly/test/FBVectorTest.cpp b/folly/test/FBVectorTest.cpp
index 330dc4bb93d7eefc653eb3ca6db298d1256f7e92..ae8458347aa191ec9bd547ba8cdaa2b6919ffe56 100644 (file)
--- a/folly/test/FBVectorTest.cpp
+++ b/folly/test/FBVectorTest.cpp
@@ -274,6 +274,16 @@ TEST(FBVector, vector_of_maps) {
   EXPECT_EQ(1, v[1].size());
 }
 
+TEST(FBVector, shrink_to_fit_after_clear) {
+  fbvector<int> fb1;
+  fb1.push_back(42);
+  fb1.push_back(1337);
+  fb1.clear();
+  fb1.shrink_to_fit();
+  EXPECT_EQ(fb1.size(), 0);
+  EXPECT_EQ(fb1.capacity(), 0);
+}
+
 int main(int argc, char** argv) {
   testing::InitGoogleTest(&argc, argv);
   gflags::ParseCommandLineFlags(&argc, &argv, true);