fixup! unittests

Author: Michael137

llvm/unittests/DebugInfo/DWARF/DWARFDebugInfoTest.cpp

@@ -2276,4 +2276,46 @@ TEST(DWARFDebugInfo, TestDWARF64UnitLength) {
   });
 }
 
+TEST(DWARFDebugInfo, TestLanguageDescription_Versioned) {
+  // Tests for the llvm::dwarf::LanguageDescription API that
+  // takes a name *and* a version.
+
+  // Unknown language.
+  EXPECT_EQ(
+      llvm::dwarf::LanguageDescription(static_cast<SourceLanguageName>(0)),
+      "Unknown");
+
+  // Test that specifying an invalid version falls back to a valid language name
+  // regardless.
+  EXPECT_EQ(llvm::dwarf::LanguageDescription(
+                static_cast<SourceLanguageName>(DW_LNAME_ObjC), 0),
+            "Objective C");
+  EXPECT_EQ(llvm::dwarf::LanguageDescription(
+                static_cast<SourceLanguageName>(DW_LNAME_Julia), 0),
+            "Julia");
+
+  // Check some versions.
+  EXPECT_EQ(llvm::dwarf::LanguageDescription(DW_LNAME_C_plus_plus, 199711),
+            "C++98");
+  EXPECT_EQ(llvm::dwarf::LanguageDescription(DW_LNAME_C_plus_plus, 201402),
+            "C++14");
+
+  // Versions round up.
+  EXPECT_EQ(llvm::dwarf::LanguageDescription(DW_LNAME_C_plus_plus, 201400),
+            "C++14");
+
+  // Version 0 for C and C++ is an unversioned name.
+  EXPECT_EQ(llvm::dwarf::LanguageDescription(
+                static_cast<SourceLanguageName>(DW_LNAME_C), 0),
+            "C (K&R and ISO)");
+  EXPECT_EQ(llvm::dwarf::LanguageDescription(
+                static_cast<SourceLanguageName>(DW_LNAME_C_plus_plus), 0),
+            "ISO C++");
+
+  // Version 0 for other versioned languages may not be the unversioned name.
+  EXPECT_EQ(llvm::dwarf::LanguageDescription(
+                static_cast<SourceLanguageName>(DW_LNAME_Fortran), 0),
+            "FORTRAN 77");
+}
+
 } // end anonymous namespace