src/base/loader/image_file_data.test.cc

   1 /*
   2  * Copyright (c) 2019 The Regents of the University of California
   3  * All rights reserved
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are
   7  * met: redistributions of source code must retain the above copyright
   8  * notice, this list of conditions and the following disclaimer;
   9  * redistributions in binary form must reproduce the above copyright
  10  * notice, this list of conditions and the following disclaimer in the
  11  * documentation and/or other materials provided with the distribution;
  12  * neither the name of the copyright holders nor the names of its
  13  * contributors may be used to endorse or promote products derived from
  14  * this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  19  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  20  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  21  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  22  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #include <gtest/gtest.h>
  30 #include <sys/types.h>
  31 #include <unistd.h>
  32
  33 #include <cstdlib>
  34
  35 #include "base/loader/image_file_data.hh"
  36 #include "base/loader/small_image_file.test.hh"
  37
  38 using namespace Loader;
  39
  40 TEST(ImageFileDataTest, SimpleImage)
  41 {
  42     /*
  43      * Create a temporary file from our data blob.
  44      */
  45     char filename[] = "image-XXXXXX";
  46     int fd = mkstemp(filename);
  47     ASSERT_NE(-1, fd);
  48     ssize_t size = write(fd, image_file, sizeof(image_file));
  49
  50     /*
  51      * In this basic test, the image file is simply loaded to the
  52      * ImageFileData object (i.e., no decompression).
  53      */
  54     ImageFileData idf(filename);
  55
  56     EXPECT_EQ(idf.filename(), filename);
  57     EXPECT_EQ(size, idf.len());
  58
  59     for (size_t i = 0; i < sizeof(image_file); i++) {
  60         EXPECT_EQ(image_file[i], idf.data()[i]);
  61     }
  62
  63     /*
  64      * Close and delete the temporary file.
  65      */
  66     close(fd);
  67     unlink(filename);
  68 }
  69
  70
  71 TEST(ImageFileDataTest, GZipImage)
  72 {
  73     /*
  74      * Create temporary files from our data blobs.
  75      */
  76     char filename_gz[] = "image-XXXXXX";
  77     int fd_gz = mkstemp(filename_gz);
  78     ASSERT_NE(-1, fd_gz);
  79     ssize_t size_gz = write(fd_gz, image_file_gzipped,
  80                             sizeof(image_file_gzipped));
  81
  82     char filename[] = "image-XXXXXX";
  83     int fd = mkstemp(filename);
  84     ASSERT_NE(-1, fd);
  85     ssize_t size = write(fd, image_file, sizeof(image_file));
  86
  87     /*
  88      * ImageFileData decompresses a gzipped file. image_file_gzipped is just
  89      * image_file gzipped. Therefore ifd_gz.len() should equal ifd.len() and
  90      * ifd.data() should equal ifd_gz.data().
  91      */
  92     ImageFileData ifd_gz(filename_gz);
  93     ImageFileData ifd(filename);
  94
  95     EXPECT_EQ(ifd.len(), ifd_gz.len());
  96     EXPECT_EQ(size, ifd.len());
  97     EXPECT_NE(size_gz, ifd_gz.len());
  98
  99     for (size_t index = 0; index < ifd.len(); index++) {
 100         EXPECT_EQ(ifd.data()[index], ifd_gz.data()[index]);
 101     }
 102
 103     /*
 104      * Close and delete the temporary files.
 105      */
 106     close(fd);
 107     unlink(filename);
 108     close(fd_gz);
 109     unlink(filename_gz);
 110 }