1 files changed, 50 insertions, 0 deletions
diff --git a/clang-tools-extra/unittests/cpp11-migrate/ReformattingTest.cpp b/clang-tools-extra/unittests/cpp11-migrate/ReformattingTest.cpp
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index 00000000000..fcde6b81db4
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+++ b/clang-tools-extra/unittests/cpp11-migrate/ReformattingTest.cpp
@@ -0,0 +1,50 @@
+//===- cpp11-migrate/ReformattingTest.cpp - Reformatting unit tests -------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "Core/Reformatting.h"
+#include "Core/FileOverrides.h"
+#include "gtest/gtest.h"
+#include "VirtualFileHelper.h"
+
+using namespace clang;
+using namespace clang::tooling;
+
+namespace {
+// convenience function to create a ChangedRanges containing one Range
+ChangedRanges makeChangedRanges(unsigned Offset, unsigned Length) {
+  ChangedRanges Changes;
+  Replacements Replaces;
+
+  Replaces.insert(Replacement("", Offset, 0, std::string(Length, '~')));
+  Changes.adjustChangedRanges(Replaces);
+  return Changes;
+}
+} // end anonymous namespace
+
+TEST(Reformatter, SingleReformat) {
+  VirtualFileHelper VFHelper;
+  llvm::StringRef FileName = "<test>";
+  VFHelper.mapFile(FileName, "int  a;\n"
+                             "int  b;\n");
+
+  Reformatter ChangesReformatter(format::getLLVMStyle());
+  ChangedRanges Changes = makeChangedRanges(0, 6);
+  tooling::Replacements Replaces = ChangesReformatter.reformatSingleFile(
+      FileName, Changes, VFHelper.getNewSourceManager());
+
+  SourceOverrides Overrides(FileName, /*TrackChanges=*/false);
+  Overrides.applyReplacements(Replaces, VFHelper.getNewSourceManager());
+
+  std::string Expected, Result;
+
+  Expected = "int a;\n"
+             "int  b;\n";
+  Result = Overrides.getMainFileContent();
+  EXPECT_EQ(Expected, Result);
+}