ceph/src/test/crimson/test_denc.cc

   1 #include <string>
   2 #include <seastar/core/temporary_buffer.hh>
   3 #include <gtest/gtest.h>
   4 #include "include/denc.h"
   5 #include "common/buffer_seastar.h"
   6
   7 using temporary_buffer = seastar::temporary_buffer<char>;
   8 using buffer_iterator = seastar_buffer_iterator;
   9 using const_buffer_iterator = const_seastar_buffer_iterator;
  10
  11 template<typename T>
  12 void test_denc(T v) {
  13   // estimate
  14   size_t s = 0;
  15   denc(v, s);
  16   ASSERT_NE(s, 0u);
  17
  18   // encode
  19   temporary_buffer buf{s};
  20   buffer_iterator enc{buf};
  21   denc(v, enc);
  22   size_t len = enc.get() - buf.begin();
  23   ASSERT_LE(len, s);
  24
  25   // decode
  26   T out;
  27   temporary_buffer encoded = buf.share();
  28   encoded.trim(len);
  29   const_buffer_iterator dec{encoded};
  30   denc(out, dec);
  31   ASSERT_EQ(v, out);
  32   ASSERT_EQ(dec.get(), enc.get());
  33 }
  34
  35 TEST(denc, simple)
  36 {
  37   test_denc((uint8_t)4);
  38   test_denc((int8_t)-5);
  39   test_denc((uint16_t)6);
  40   test_denc((int16_t)-7);
  41   test_denc((uint32_t)8);
  42   test_denc((int32_t)-9);
  43   test_denc((uint64_t)10);
  44   test_denc((int64_t)-11);
  45 }
  46
  47 TEST(denc, string)
  48 {
  49   std::string a, b("hi"), c("multi\nline\n");
  50   test_denc(a);
  51   test_denc(b);
  52   test_denc(c);
  53 }