Add 2x constructors for TinyPtrVector, one that takes in one elemenet and the other that takes in an ArrayRef<EltTy>

Currently one can only construct an empty TinyPtrVector. These are just missing
elements of the API.

llvm-svn: 225055

1 files changed, 26 insertions, 0 deletions

diff --git a/llvm/unittests/ADT/TinyPtrVectorTest.cpp b/llvm/unittests/ADT/TinyPtrVectorTest.cpp
index ec868d4258a..a402e8be9df 100644
--- a/llvm/unittests/ADT/TinyPtrVectorTest.cpp
+++ b/llvm/unittests/ADT/TinyPtrVectorTest.cpp
@@ -412,3 +412,29 @@ TYPED_TEST(TinyPtrVectorTest, InsertRange) {
 }
 
 }
+
+TEST(TinyPtrVectorTest, SingleEltCtorTest) {
+  int v = 55;
+  TinyPtrVector<int *> V(&v);
+
+  EXPECT_TRUE(V.size() == 1);
+  EXPECT_FALSE(V.empty());
+  EXPECT_TRUE(V.front() == &v);
+}
+
+TEST(TinyPtrVectorTest, ArrayRefCtorTest) {
+  int data_array[128];
+  std::vector<int *> data;
+
+  for (unsigned i = 0, e = 128; i != e; ++i) {
+    data_array[i] = 324 - int(i);
+    data.push_back(&data_array[i]);
+  }
+
+  TinyPtrVector<int *> V(data);
+  EXPECT_TRUE(V.size() == 128);
+  EXPECT_FALSE(V.empty());
+  for (unsigned i = 0, e = 128; i != e; ++i) {
+    EXPECT_TRUE(V[i] == data[i]);
+  }
+}