1 files changed, 74 insertions, 0 deletions
diff --git a/unittests/Tooling/RecursiveASTVisitorTests/NestedNameSpecifiers.cpp b/unittests/Tooling/RecursiveASTVisitorTests/NestedNameSpecifiers.cpp
new file mode 100644
index 0000000000000..23afda6e87d0d
--- /dev/null
+++ b/unittests/Tooling/RecursiveASTVisitorTests/NestedNameSpecifiers.cpp
@@ -0,0 +1,74 @@
+//===- unittest/Tooling/RecursiveASTVisitorTests/NestedNameSpecifiers.cpp -===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "TestVisitor.h"
+
+using namespace clang;
+
+namespace {
+
+// Check to ensure that nested name specifiers are visited.
+class NestedNameSpecifiersVisitor
+    : public ExpectedLocationVisitor<NestedNameSpecifiersVisitor> {
+public:
+  bool VisitRecordTypeLoc(RecordTypeLoc RTL) {
+    if (!RTL)
+      return true;
+    Match(RTL.getDecl()->getName(), RTL.getNameLoc());
+    return true;
+  }
+
+  bool TraverseNestedNameSpecifierLoc(NestedNameSpecifierLoc NNS) {
+    if (!NNS)
+      return true;
+    if (const NamespaceDecl *ND =
+            NNS.getNestedNameSpecifier()->getAsNamespace())
+      Match(ND->getName(), NNS.getLocalBeginLoc());
+    return ExpectedLocationVisitor::TraverseNestedNameSpecifierLoc(NNS);
+  }
+};
+
+TEST(RecursiveASTVisitor,
+     NestedNameSpecifiersForTemplateSpecializationsAreVisited) {
+  StringRef Source = R"(
+namespace ns {
+struct Outer {
+    template<typename T, typename U>
+    struct Nested { };
+
+    template<typename T>
+    static T x;
+};
+}
+
+template<>
+struct ns::Outer::Nested<int, int>;
+
+template<>
+struct ns::Outer::Nested<int, int> { };
+
+template<typename T>
+struct ns::Outer::Nested<int, T> { };
+
+template<>
+int ns::Outer::x<int> = 0;
+)";
+  NestedNameSpecifiersVisitor Visitor;
+  Visitor.ExpectMatch("ns", 13, 8);
+  Visitor.ExpectMatch("ns", 16, 8);
+  Visitor.ExpectMatch("ns", 19, 8);
+  Visitor.ExpectMatch("ns", 22, 5);
+  Visitor.ExpectMatch("Outer", 13, 12);
+  Visitor.ExpectMatch("Outer", 16, 12);
+  Visitor.ExpectMatch("Outer", 19, 12);
+  Visitor.ExpectMatch("Outer", 22, 9);
+  EXPECT_TRUE(Visitor.runOver(Source, NestedNameSpecifiersVisitor::Lang_CXX14));
+}
+
+} // end anonymous namespace