[llvm][ADT][NFC] Add test for makeArrayRef(std::array)

llvm-svn: 371475

1 files changed, 10 insertions, 0 deletions

diff --git a/llvm/unittests/ADT/ArrayRefTest.cpp b/llvm/unittests/ADT/ArrayRefTest.cpp
index 04b92c078af..5424742b6b6 100644
--- a/llvm/unittests/ADT/ArrayRefTest.cpp
+++ b/llvm/unittests/ADT/ArrayRefTest.cpp
@@ -250,6 +250,16 @@ TEST(ArrayRefTest, OwningArrayRef) {
   EXPECT_EQ(A.data(), nullptr);
 }
 
+TEST(ArrayRefTest, makeArrayRefFromStdArray) {
+  std::array<int, 5> A1{42, -5, 0, 1000000, -1000000};
+  ArrayRef<int> A2 = makeArrayRef(A1);
+
+  EXPECT_EQ(A1.size(), A2.size());
+  for (std::size_t i = 0; i < A1.size(); ++i) {
+    EXPECT_EQ(A1[i], A2[i]);
+  }
+}
+
 static_assert(is_trivially_copyable<ArrayRef<int>>::value,
               "trivially copyable");