external/bsd/kyua-cli/dist/utils/process/systembuf_test.cpp

   1 // Copyright 2010 Google Inc.
   2 // All rights reserved.
   3 //
   4 // Redistribution and use in source and binary forms, with or without
   5 // modification, are permitted provided that the following conditions are
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   9 //   notice, this list of conditions and the following disclaimer.
  10 // * Redistributions in binary form must reproduce the above copyright
  11 //   notice, this list of conditions and the following disclaimer in the
  12 //   documentation and/or other materials provided with the distribution.
  13 // * Neither the name of Google Inc. nor the names of its contributors
  14 //   may be used to endorse or promote products derived from this software
  15 //   without specific prior written permission.
  16 //
  17 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  18 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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  20 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  21 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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  23 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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  25 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  27 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28
  29 #include "utils/process/systembuf.hpp"
  30
  31 extern "C" {
  32 #include <sys/stat.h>
  33
  34 #include <fcntl.h>
  35 #include <unistd.h>
  36 }
  37
  38 #include <fstream>
  39
  40 #include <atf-c++.hpp>
  41
  42 using utils::process::systembuf;
  43
  44
  45 static void
  46 check_data(std::istream& is, std::size_t length)
  47 {
  48     char ch = 'A', chr;
  49     std::size_t cnt = 0;
  50     while (is >> chr) {
  51         ATF_REQUIRE_EQ(ch, chr);
  52         if (ch == 'Z')
  53             ch = 'A';
  54         else
  55             ch++;
  56         cnt++;
  57     }
  58     ATF_REQUIRE_EQ(cnt, length);
  59 }
  60
  61
  62 static void
  63 write_data(std::ostream& os, std::size_t length)
  64 {
  65     char ch = 'A';
  66     for (std::size_t i = 0; i < length; i++) {
  67         os << ch;
  68         if (ch == 'Z')
  69             ch = 'A';
  70         else
  71             ch++;
  72     }
  73     os.flush();
  74 }
  75
  76
  77 static void
  78 test_read(std::size_t length, std::size_t bufsize)
  79 {
  80     std::ofstream f("test_read.txt");
  81     write_data(f, length);
  82     f.close();
  83
  84     int fd = ::open("test_read.txt", O_RDONLY);
  85     ATF_REQUIRE(fd != -1);
  86     systembuf sb(fd, bufsize);
  87     std::istream is(&sb);
  88     check_data(is, length);
  89     ::close(fd);
  90     ::unlink("test_read.txt");
  91 }
  92
  93
  94 static void
  95 test_write(std::size_t length, std::size_t bufsize)
  96 {
  97     int fd = ::open("test_write.txt", O_WRONLY | O_CREAT | O_TRUNC,
  98                     S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
  99     ATF_REQUIRE(fd != -1);
 100     systembuf sb(fd, bufsize);
 101     std::ostream os(&sb);
 102     write_data(os, length);
 103     ::close(fd);
 104
 105     std::ifstream is("test_write.txt");
 106     check_data(is, length);
 107     is.close();
 108     ::unlink("test_write.txt");
 109 }
 110
 111
 112 ATF_TEST_CASE(short_read);
 113 ATF_TEST_CASE_HEAD(short_read)
 114 {
 115     set_md_var("descr", "Tests that a short read (one that fits in the "
 116                "internal buffer) works when using systembuf");
 117 }
 118 ATF_TEST_CASE_BODY(short_read)
 119 {
 120     test_read(64, 1024);
 121 }
 122
 123
 124 ATF_TEST_CASE(long_read);
 125 ATF_TEST_CASE_HEAD(long_read)
 126 {
 127     set_md_var("descr", "Tests that a long read (one that does not fit in "
 128                "the internal buffer) works when using systembuf");
 129 }
 130 ATF_TEST_CASE_BODY(long_read)
 131 {
 132     test_read(64 * 1024, 1024);
 133 }
 134
 135
 136 ATF_TEST_CASE(short_write);
 137 ATF_TEST_CASE_HEAD(short_write)
 138 {
 139     set_md_var("descr", "Tests that a short write (one that fits in the "
 140                "internal buffer) works when using systembuf");
 141 }
 142 ATF_TEST_CASE_BODY(short_write)
 143 {
 144     test_write(64, 1024);
 145 }
 146
 147
 148 ATF_TEST_CASE(long_write);
 149 ATF_TEST_CASE_HEAD(long_write)
 150 {
 151     set_md_var("descr", "Tests that a long write (one that does not fit "
 152                "in the internal buffer) works when using systembuf");
 153 }
 154 ATF_TEST_CASE_BODY(long_write)
 155 {
 156     test_write(64 * 1024, 1024);
 157 }
 158
 159
 160 ATF_INIT_TEST_CASES(tcs)
 161 {
 162     ATF_ADD_TEST_CASE(tcs, short_read);
 163     ATF_ADD_TEST_CASE(tcs, long_read);
 164     ATF_ADD_TEST_CASE(tcs, short_write);
 165     ATF_ADD_TEST_CASE(tcs, long_write);
 166 }