Github user zwoop commented on a diff in the pull request:

    https://github.com/apache/trafficserver/pull/1133#discussion_r84770458
  
    --- Diff: plugins/header_rewrite/header_rewrite_test.cc ---
    @@ -31,274 +33,395 @@ const char PLUGIN_NAME_DBG[] = 
"TEST_dbg_header_rewrite";
     extern "C" void
     TSError(const char *fmt, ...)
     {
    -  char buf[2048];
    -  int bytes = 0;
    -  va_list args;
    -  va_start(args, fmt);
    -  if ((bytes = vsnprintf(buf, sizeof(buf), fmt, args)) > 0) {
    -    fprintf(stderr, "TSError: %s: %.*s\n", PLUGIN_NAME, bytes, buf);
    -  }
    -  va_end(args);
     }
     
    -extern "C" void
    -TSDebug(const char *tag, const char *fmt, ...)
    -{
    -  char buf[2048];
    -  int bytes = 0;
    -  va_list args;
    -  va_start(args, fmt);
    -  if ((bytes = vsnprintf(buf, sizeof(buf), fmt, args)) > 0) {
    -    fprintf(stdout, "TSDebug: %s: %.*s\n", PLUGIN_NAME, bytes, buf);
    -  }
    -  va_end(args);
    -}
    -
    -#define CHECK_EQ(x, y)                   \
    -  do {                                   \
    -    if ((x) != (y)) {                    \
    -      fprintf(stderr, "CHECK FAILED\n"); \
    -      return 1;                          \
    -    }                                    \
    -  } while (false);
    -
     class ParserTest : public Parser
     {
     public:
    -  ParserTest(std::string line) : Parser(line) {}
    +  ParserTest(std::string line) : Parser(line), res(true) { std::cout << 
"Starting parser test: " << line << std::endl; }
       std::vector<std::string>
       getTokens()
       {
         return _tokens;
       }
    +
    +  template <typename T, typename U>
    +  void
    +  do_parser_check(T x, U y, int line = 0)
    +  {
    +    if (x != y) {
    +      std::cerr << "CHECK FAILED on line " << line << ": " << x << " != " 
<< y << std::endl;
    +      res = false;
    +    }
    +  }
    +
    +  bool res;
     };
     
    +#define CHECK_EQ(x, y)                     \
    +  do {                                     \
    +    p.do_parser_check((x), (y), __LINE__); \
    +  } while (false);
    +
    +#define END_TEST(s) \
    +  do {              \
    +    if (!p.res) {   \
    +      ++errors;     \
    +    }               \
    +  } while (false);
    +
     int
     test_parsing()
     {
    +  int errors = 0;
    +
       {
         ParserTest p("cond      %{READ_REQUEST_HDR_HOOK}");
    -    CHECK_EQ(p.getTokens().size(), 2);
    +
    +    CHECK_EQ(p.getTokens().size(), 2U);
         CHECK_EQ(p.getTokens()[0], "cond");
         CHECK_EQ(p.getTokens()[1], "%{READ_REQUEST_HDR_HOOK}");
    +
    +    END_TEST();
       }
     
       {
         ParserTest p("cond %{CLIENT-HEADER:Host}    =a");
    -    CHECK_EQ(p.getTokens().size(), 4);
    +
    +    CHECK_EQ(p.getTokens().size(), 4UL);
         CHECK_EQ(p.getTokens()[0], "cond");
         CHECK_EQ(p.getTokens()[1], "%{CLIENT-HEADER:Host}");
         CHECK_EQ(p.getTokens()[2], "=");
         CHECK_EQ(p.getTokens()[3], "a");
    +
    +    END_TEST();
       }
     
       {
         ParserTest p(" # COMMENT!");
    -    CHECK_EQ(p.getTokens().size(), 0);
    +
    +    CHECK_EQ(p.getTokens().size(), 0UL);
         CHECK_EQ(p.empty(), true);
    +
    +    END_TEST();
       }
     
       {
         ParserTest p("# COMMENT");
    -    CHECK_EQ(p.getTokens().size(), 0);
    +
    +    CHECK_EQ(p.getTokens().size(), 0UL);
         CHECK_EQ(p.empty(), true);
    +
    +    END_TEST();
       }
     
       {
         ParserTest p("cond %{Client-HEADER:Foo} =b");
    -    CHECK_EQ(p.getTokens().size(), 4);
    +
    +    CHECK_EQ(p.getTokens().size(), 4UL);
         CHECK_EQ(p.getTokens()[0], "cond");
         CHECK_EQ(p.getTokens()[1], "%{Client-HEADER:Foo}");
         CHECK_EQ(p.getTokens()[2], "=");
         CHECK_EQ(p.getTokens()[3], "b");
    +
    +    END_TEST();
       }
     
       {
         ParserTest p("cond %{Client-HEADER:Blah}       =        x");
    -    CHECK_EQ(p.getTokens().size(), 4);
    +
    +    CHECK_EQ(p.getTokens().size(), 4UL);
         CHECK_EQ(p.getTokens()[0], "cond");
         CHECK_EQ(p.getTokens()[1], "%{Client-HEADER:Blah}");
         CHECK_EQ(p.getTokens()[2], "=");
         CHECK_EQ(p.getTokens()[3], "x");
    +
    +    END_TEST();
       }
     
       {
         ParserTest p("cond %{CLIENT-HEADER:non_existent_header} =  \"shouldnt_ 
  exist    _anyway\"          [AND]");
    -    CHECK_EQ(p.getTokens().size(), 5);
    +
    +    CHECK_EQ(p.getTokens().size(), 5UL);
         CHECK_EQ(p.getTokens()[0], "cond");
         CHECK_EQ(p.getTokens()[1], "%{CLIENT-HEADER:non_existent_header}");
         CHECK_EQ(p.getTokens()[2], "=");
         CHECK_EQ(p.getTokens()[3], "shouldnt_   exist    _anyway");
         CHECK_EQ(p.getTokens()[4], "[AND]");
    +
    +    END_TEST();
       }
     
       {
         ParserTest p("cond %{CLIENT-HEADER:non_existent_header} =  \"shouldnt_ 
  =    _anyway\"          [AND]");
    -    CHECK_EQ(p.getTokens().size(), 5);
    +
    +    CHECK_EQ(p.getTokens().size(), 5UL);
         CHECK_EQ(p.getTokens()[0], "cond");
         CHECK_EQ(p.getTokens()[1], "%{CLIENT-HEADER:non_existent_header}");
         CHECK_EQ(p.getTokens()[2], "=");
         CHECK_EQ(p.getTokens()[3], "shouldnt_   =    _anyway");
         CHECK_EQ(p.getTokens()[4], "[AND]");
    +
    +    END_TEST();
       }
     
       {
         ParserTest p("cond %{CLIENT-HEADER:non_existent_header} =\"=\"         
 [AND]");
    -    CHECK_EQ(p.getTokens().size(), 5);
    +
    +    CHECK_EQ(p.getTokens().size(), 5UL);
         CHECK_EQ(p.getTokens()[0], "cond");
         CHECK_EQ(p.getTokens()[1], "%{CLIENT-HEADER:non_existent_header}");
         CHECK_EQ(p.getTokens()[2], "=");
         CHECK_EQ(p.getTokens()[3], "=");
         CHECK_EQ(p.getTokens()[4], "[AND]");
    +
    +    END_TEST();
       }
     
       {
         ParserTest p("cond %{CLIENT-HEADER:non_existent_header} =\"\"          
[AND]");
    -    CHECK_EQ(p.getTokens().size(), 5);
    +
    +    CHECK_EQ(p.getTokens().size(), 5UL);
         CHECK_EQ(p.getTokens()[0], "cond");
         CHECK_EQ(p.getTokens()[1], "%{CLIENT-HEADER:non_existent_header}");
         CHECK_EQ(p.getTokens()[2], "=");
         CHECK_EQ(p.getTokens()[3], "");
         CHECK_EQ(p.getTokens()[4], "[AND]");
    +
    +    END_TEST();
       }
     
       {
         ParserTest p("add-header X-HeaderRewriteApplied true");
    -    CHECK_EQ(p.getTokens().size(), 3);
    +
    +    CHECK_EQ(p.getTokens().size(), 3UL);
         CHECK_EQ(p.getTokens()[0], "add-header");
         CHECK_EQ(p.getTokens()[1], "X-HeaderRewriteApplied");
         CHECK_EQ(p.getTokens()[2], "true");
    +
    +    END_TEST();
       }
     
       /* backslash-escape */
       {
         ParserTest p("add-header foo \\ \\=\\<\\>\\\"\\#\\\\");
    -    CHECK_EQ(p.getTokens().size(), 3);
    +
    +    CHECK_EQ(p.getTokens().size(), 3UL);
         CHECK_EQ(p.getTokens()[0], "add-header");
         CHECK_EQ(p.getTokens()[1], "foo");
         CHECK_EQ(p.getTokens()[2], " =<>\"#\\");
    +
    +    END_TEST();
       }
     
       {
         ParserTest p("add-header foo \\<bar\\>");
    -    CHECK_EQ(p.getTokens().size(), 3);
    +
    +    CHECK_EQ(p.getTokens().size(), 3UL);
         CHECK_EQ(p.getTokens()[0], "add-header");
         CHECK_EQ(p.getTokens()[1], "foo");
         CHECK_EQ(p.getTokens()[2], "<bar>");
    +
    +    END_TEST();
       }
     
       {
         ParserTest p("add-header foo \\bar\\");
    -    CHECK_EQ(p.getTokens().size(), 3);
    +
    +    CHECK_EQ(p.getTokens().size(), 3UL);
         CHECK_EQ(p.getTokens()[0], "add-header");
         CHECK_EQ(p.getTokens()[1], "foo");
         CHECK_EQ(p.getTokens()[2], "bar");
    +
    +    END_TEST();
       }
     
       {
         ParserTest p("add-header foo \"bar\"");
    -    CHECK_EQ(p.getTokens().size(), 3);
    +
    +    CHECK_EQ(p.getTokens().size(), 3UL);
         CHECK_EQ(p.getTokens()[0], "add-header");
         CHECK_EQ(p.getTokens()[1], "foo");
         CHECK_EQ(p.getTokens()[2], "bar");
    +
    +    END_TEST();
       }
     
       {
         ParserTest p("add-header foo \"\\\"bar\\\"\"");
    -    CHECK_EQ(p.getTokens().size(), 3);
    +
    +    CHECK_EQ(p.getTokens().size(), 3UL);
         CHECK_EQ(p.getTokens()[0], "add-header");
         CHECK_EQ(p.getTokens()[1], "foo");
         CHECK_EQ(p.getTokens()[2], "\"bar\"");
    +
    +    END_TEST();
       }
     
       {
         ParserTest p("add-header foo \"\\\"\\\\\\\"bar\\\\\\\"\\\"\"");
    -    CHECK_EQ(p.getTokens().size(), 3);
    +
    +    CHECK_EQ(p.getTokens().size(), 3UL);
         CHECK_EQ(p.getTokens()[0], "add-header");
         CHECK_EQ(p.getTokens()[1], "foo");
         CHECK_EQ(p.getTokens()[2], "\"\\\"bar\\\"\"");
    +
    +    END_TEST();
       }
     
       {
         ParserTest p("add-header Public-Key-Pins \"max-age=3000; 
pin-sha256=\\\"d6qzRu9zOECb90Uez27xWltNsj0e1Md7GkYYkVoZWmM=\\\"\"");
    -    CHECK_EQ(p.getTokens().size(), 3);
    +
    +    CHECK_EQ(p.getTokens().size(), 3UL);
         CHECK_EQ(p.getTokens()[0], "add-header");
         CHECK_EQ(p.getTokens()[1], "Public-Key-Pins");
         CHECK_EQ(p.getTokens()[2], "max-age=3000; 
pin-sha256=\"d6qzRu9zOECb90Uez27xWltNsj0e1Md7GkYYkVoZWmM=\"");
    +
    +    END_TEST();
       }
     
       {
    -    ParserTest p(
    -      "add-header Public-Key-Pins max-age\\=3000;\\ 
pin-sha256\\=\\\"d6qzRu9zOECb90Uez27xWltNsj0e1Md7GkYYkVoZWmM\\=\\\"");
    -    CHECK_EQ(p.getTokens().size(), 3);
    +    ParserTest p("add-header Public-Key-Pins max-age\\=3000;"
    +                 "\\ 
pin-sha256\\=\\\"d6qzRu9zOECb90Uez27xWltNsj0e1Md7GkYYkVoZWmM\\=\\\"");
    +
    +    CHECK_EQ(p.getTokens().size(), 3UL);
         CHECK_EQ(p.getTokens()[0], "add-header");
         CHECK_EQ(p.getTokens()[1], "Public-Key-Pins");
         CHECK_EQ(p.getTokens()[2], "max-age=3000; 
pin-sha256=\"d6qzRu9zOECb90Uez27xWltNsj0e1Md7GkYYkVoZWmM=\"");
    +
    +    END_TEST();
    +  }
    +
    +  {
    +    ParserTest p("add-header Client-IP \"%<chi>\"");
    +
    +    CHECK_EQ(p.getTokens().size(), 3UL);
    +    CHECK_EQ(p.getTokens()[0], "add-header");
    +    CHECK_EQ(p.getTokens()[1], "Client-IP");
    +    CHECK_EQ(p.getTokens()[2], "\%<chi>");
    +
    +    END_TEST();
    +  }
    +
    +// This can not succeed as is now, have to quote the "%<proto>"
    --- End diff --
    
    Not sure I understand, this check breaks now? There is an incompatible 
change since 6.x, where just %<chi> no longer works. I can remove this check.


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