2 files changed, 51 insertions, 0 deletions
diff --git a/unittests/Support/CMakeLists.txt b/unittests/Support/CMakeLists.txt
index 89e16ef4b3f..4b46387a471 100644
--- a/unittests/Support/CMakeLists.txt
+++ b/unittests/Support/CMakeLists.txt
@@ -61,6 +61,7 @@ add_llvm_unittest(SupportTests
   TrailingObjectsTest.cpp
   TrigramIndexTest.cpp
   UnicodeTest.cpp
+  VersionTupleTest.cpp
   YAMLIOTest.cpp
   YAMLParserTest.cpp
   formatted_raw_ostream_test.cpp
diff --git a/unittests/Support/VersionTupleTest.cpp b/unittests/Support/VersionTupleTest.cpp
new file mode 100644
index 00000000000..cd7ecda5fef
--- /dev/null
+++ b/unittests/Support/VersionTupleTest.cpp
@@ -0,0 +1,50 @@
+//===- VersionTupleTests.cpp - Version Number Handling Tests --------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Support/VersionTuple.h"
+#include "gtest/gtest.h"
+
+using namespace llvm;
+
+TEST(VersionTuple, getAsString) {
+  EXPECT_EQ("0", VersionTuple().getAsString());
+  EXPECT_EQ("1", VersionTuple(1).getAsString());
+  EXPECT_EQ("1.2", VersionTuple(1, 2).getAsString());
+  EXPECT_EQ("1.2.3", VersionTuple(1, 2, 3).getAsString());
+  EXPECT_EQ("1.2.3.4", VersionTuple(1, 2, 3, 4).getAsString());
+}
+
+TEST(VersionTuple, tryParse) {
+  VersionTuple VT;
+
+  EXPECT_FALSE(VT.tryParse("1"));
+  EXPECT_EQ("1", VT.getAsString());
+
+  EXPECT_FALSE(VT.tryParse("1.2"));
+  EXPECT_EQ("1.2", VT.getAsString());
+
+  EXPECT_FALSE(VT.tryParse("1.2.3"));
+  EXPECT_EQ("1.2.3", VT.getAsString());
+
+  EXPECT_FALSE(VT.tryParse("1.2.3.4"));
+  EXPECT_EQ("1.2.3.4", VT.getAsString());
+
+  EXPECT_TRUE(VT.tryParse(""));
+  EXPECT_TRUE(VT.tryParse("1."));
+  EXPECT_TRUE(VT.tryParse("1.2."));
+  EXPECT_TRUE(VT.tryParse("1.2.3."));
+  EXPECT_TRUE(VT.tryParse("1.2.3.4."));
+  EXPECT_TRUE(VT.tryParse("1.2.3.4.5"));
+  EXPECT_TRUE(VT.tryParse("1-2"));
+  EXPECT_TRUE(VT.tryParse("1+2"));
+  EXPECT_TRUE(VT.tryParse(".1"));
+  EXPECT_TRUE(VT.tryParse(" 1"));
+  EXPECT_TRUE(VT.tryParse("1 "));
+  EXPECT_TRUE(VT.tryParse("."));
+}