[CrossTU] Fix handling of Cross Translation Unit directory path

Differential Revision: https://reviews.llvm.org/D38842

llvm-svn: 316764

1 files changed, 23 insertions, 3 deletions

diff --git a/clang/unittests/CrossTU/CrossTranslationUnitTest.cpp b/clang/unittests/CrossTU/CrossTranslationUnitTest.cpp
index 795a4351b50..5fbf56ed43b 100644
--- a/clang/unittests/CrossTU/CrossTranslationUnitTest.cpp
+++ b/clang/unittests/CrossTU/CrossTranslationUnitTest.cpp
@@ -109,9 +109,9 @@ TEST(CrossTranslationUnit, CanLoadFunctionDefinition) {
 
 TEST(CrossTranslationUnit, IndexFormatCanBeParsed) {
   llvm::StringMap<std::string> Index;
-  Index["a"] = "b";
-  Index["c"] = "d";
-  Index["e"] = "f";
+  Index["a"] = "/b/f1";
+  Index["c"] = "/d/f2";
+  Index["e"] = "/f/f3";
   std::string IndexText = createCrossTUIndexString(Index);
 
   int IndexFD;
@@ -134,5 +134,25 @@ TEST(CrossTranslationUnit, IndexFormatCanBeParsed) {
     EXPECT_TRUE(Index.count(E.getKey()));
 }
 
+TEST(CrossTranslationUnit, CTUDirIsHandledCorrectly) {
+  llvm::StringMap<std::string> Index;
+  Index["a"] = "/b/c/d";
+  std::string IndexText = createCrossTUIndexString(Index);
+
+  int IndexFD;
+  llvm::SmallString<256> IndexFileName;
+  ASSERT_FALSE(llvm::sys::fs::createTemporaryFile("index", "txt", IndexFD,
+                                                  IndexFileName));
+  llvm::ToolOutputFile IndexFile(IndexFileName, IndexFD);
+  IndexFile.os() << IndexText;
+  IndexFile.os().flush();
+  EXPECT_TRUE(llvm::sys::fs::exists(IndexFileName));
+  llvm::Expected<llvm::StringMap<std::string>> IndexOrErr =
+      parseCrossTUIndex(IndexFileName, "/ctudir");
+  EXPECT_TRUE((bool)IndexOrErr);
+  llvm::StringMap<std::string> ParsedIndex = IndexOrErr.get();
+  EXPECT_EQ(ParsedIndex["a"], "/ctudir/b/c/d");
+}
+
 } // end namespace cross_tu
 } // end namespace clang