Enhance the added test case

Author: owenca

clang/unittests/Format/TokenAnnotatorTest.cpp

@@ -2258,11 +2258,11 @@ TEST_F(TokenAnnotatorTest, UnderstandsFunctionDeclarationNames) {
   EXPECT_TOKEN(Tokens[2], tok::l_paren, TT_FunctionDeclarationLParen);
 
   Tokens = annotate("#define FUNC(foo, bar) \\\n"
-                    "  auto foo##bar() -> Type {}");
-  ASSERT_EQ(Tokens.size(), 19u) << Tokens;
+                    "  auto foo##bar##baz() -> Type {}");
+  ASSERT_EQ(Tokens.size(), 21u) << Tokens;
   EXPECT_TOKEN(Tokens[9], tok::identifier, TT_FunctionDeclarationName);
-  EXPECT_TOKEN(Tokens[12], tok::l_paren, TT_FunctionDeclarationLParen);
-  EXPECT_TOKEN(Tokens[14], tok::arrow, TT_TrailingReturnArrow);
+  EXPECT_TOKEN(Tokens[14], tok::l_paren, TT_FunctionDeclarationLParen);
+  EXPECT_TOKEN(Tokens[16], tok::arrow, TT_TrailingReturnArrow);
 
   Tokens = annotate("int iso_time(time_t);");
   ASSERT_EQ(Tokens.size(), 7u) << Tokens;