third_party/tcmalloc/chromium/src/tests/raw_printer_test.cc

   1 // Copyright 2009 Google Inc. All Rights Reserved.
   2 // Author: sanjay@google.com (Sanjay Ghemawat)
   3
   4 #include "raw_printer.h"
   5 #include <stdio.h>
   6 #include <string>
   7 #include "base/logging.h"
   8
   9 using std::string;
  10
  11 #define TEST(a, b)  void TEST_##a##_##b()
  12 #define RUN_TEST(a, b)  TEST_##a##_##b()
  13
  14 TEST(RawPrinter, Empty) {
  15   char buffer[1];
  16   base::RawPrinter printer(buffer, arraysize(buffer));
  17   CHECK_EQ(0, printer.length());
  18   CHECK_EQ(string(""), buffer);
  19   CHECK_EQ(0, printer.space_left());
  20   printer.Printf("foo");
  21   CHECK_EQ(string(""), string(buffer));
  22   CHECK_EQ(0, printer.length());
  23   CHECK_EQ(0, printer.space_left());
  24 }
  25
  26 TEST(RawPrinter, PartiallyFilled) {
  27   char buffer[100];
  28   base::RawPrinter printer(buffer, arraysize(buffer));
  29   printer.Printf("%s %s", "hello", "world");
  30   CHECK_EQ(string("hello world"), string(buffer));
  31   CHECK_EQ(11, printer.length());
  32   CHECK_LT(0, printer.space_left());
  33 }
  34
  35 TEST(RawPrinter, Truncated) {
  36   char buffer[3];
  37   base::RawPrinter printer(buffer, arraysize(buffer));
  38   printer.Printf("%d", 12345678);
  39   CHECK_EQ(string("12"), string(buffer));
  40   CHECK_EQ(2, printer.length());
  41   CHECK_EQ(0, printer.space_left());
  42 }
  43
  44 TEST(RawPrinter, ExactlyFilled) {
  45   char buffer[12];
  46   base::RawPrinter printer(buffer, arraysize(buffer));
  47   printer.Printf("%s %s", "hello", "world");
  48   CHECK_EQ(string("hello world"), string(buffer));
  49   CHECK_EQ(11, printer.length());
  50   CHECK_EQ(0, printer.space_left());
  51 }
  52
  53 int main(int argc, char **argv) {
  54   RUN_TEST(RawPrinter, Empty);
  55   RUN_TEST(RawPrinter, PartiallyFilled);
  56   RUN_TEST(RawPrinter, Truncated);
  57   RUN_TEST(RawPrinter, ExactlyFilled);
  58   printf("PASS\n");
  59   return 0;   // 0 means success
  60 }