Update testsimplifyusing.cpp

Author: chrchr-github

test/testsimplifyusing.cpp

@@ -72,7 +72,8 @@ class TestSimplifyUsing : public TestFixture {
         TEST_CASE(simplifyUsing33);
         TEST_CASE(simplifyUsing34);
         TEST_CASE(simplifyUsing35);
-        TEST_CASE(simplifyUsing36);
+        TEST_CASE(simplifyUsing36);        
+        TEST_CASE(simplifyUsing37);
 
         TEST_CASE(simplifyUsing8970);
         TEST_CASE(simplifyUsing8971);
@@ -882,6 +883,23 @@ class TestSimplifyUsing : public TestFixture {
         ASSERT_EQUALS("", errout_str());
     }
 
+    void simplifyUsing37() {
+        const char code1[] = "using fp1_t = int(*)(int);\n"
+                             "using fp2_t = int(* const)(int);\n"
+                             "fp1_t fp1;\n"
+                             "fp2_t fp2;\n";
+        const char expected1[] = "int ( * fp1 ) ( int ) ; int ( * const fp2 ) ( int ) ;";
+        ASSERT_EQUALS(expected1, tok(code1));
+        ASSERT_EQUALS("", errout_str());
+
+        const char code2[] = "using f_t = int(int);\n"
+                            "f_t* fp;\n";
+        const char expected2[] = "int ( * fp1 ) ( int ) ; int ( * const fp2 ) ( int ) ;";
+        const char actual2[] = "using f_t = int ( ) ; f_t * fp ;";
+        TODO_ASSERT_EQUALS(expected2, actual2, tok(code2));
+        TODO_ASSERT_EQUALS("", "[test.cpp:1:1]: (debug) Failed to parse 'using f_t = int ( ) ;'. The checking continues anyway. [simplifyUsing]\n", errout_str());
+    }
+
     void simplifyUsing8970() {
         const char code[] = "using V = std::vector<int>;\n"
                             "struct A {\n"