chromecast/crash/linux/dummy_minidump_generator_unittest.cc

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include <string>
   6
   7 #include "base/files/file_util.h"
   8 #include "base/rand_util.h"
   9 #include "chromecast/crash/linux/dummy_minidump_generator.h"
  10 #include "testing/gtest/include/gtest/gtest.h"
  11
  12 namespace chromecast {
  13
  14 TEST(DummyMinidumpGeneratorTest, GenerateFailsWithInvalidPath) {
  15   // Create directory in which to put minidump.
  16   base::FilePath minidump_dir;
  17   ASSERT_TRUE(base::CreateNewTempDirectory("", &minidump_dir));
  18
  19   // Attempt to generate a minidump from an invalid path.
  20   DummyMinidumpGenerator generator("/path/does/not/exist/minidump.dmp");
  21   ASSERT_FALSE(generator.Generate(minidump_dir.Append("minidump.dmp").value()));
  22 }
  23
  24 TEST(DummyMinidumpGeneratorTest, GenerateSucceedsWithSmallSource) {
  25   // Create directory in which to put minidump.
  26   base::FilePath minidump_dir;
  27   ASSERT_TRUE(base::CreateNewTempDirectory("", &minidump_dir));
  28
  29   // Create a fake minidump file.
  30   base::FilePath fake_minidump;
  31   ASSERT_TRUE(base::CreateTemporaryFile(&fake_minidump));
  32   const std::string data("Test contents of the minidump file.\n");
  33   ASSERT_EQ(static_cast<int>(data.size()),
  34             base::WriteFile(fake_minidump, data.c_str(), data.size()));
  35
  36   DummyMinidumpGenerator generator(fake_minidump.value());
  37   base::FilePath new_minidump = minidump_dir.Append("minidump.dmp");
  38   EXPECT_TRUE(generator.Generate(new_minidump.value()));
  39
  40   // Original file should not exist, and new file should contain original
  41   // contents.
  42   std::string copied_data;
  43   EXPECT_FALSE(base::PathExists(fake_minidump));
  44   ASSERT_TRUE(base::PathExists(new_minidump));
  45   EXPECT_TRUE(base::ReadFileToString(new_minidump, &copied_data));
  46   EXPECT_EQ(data, copied_data);
  47 }
  48
  49 TEST(DummyMinidumpGeneratorTest, GenerateSucceedsWithLargeSource) {
  50   // Create directory in which to put minidump.
  51   base::FilePath minidump_dir;
  52   ASSERT_TRUE(base::CreateNewTempDirectory("", &minidump_dir));
  53
  54   // Create a large fake minidump file.
  55   base::FilePath fake_minidump;
  56   ASSERT_TRUE(base::CreateTemporaryFile(&fake_minidump));
  57   size_t str_len = 32768 * 10 + 1;
  58   const std::string data = base::RandBytesAsString(str_len);
  59
  60   // Write the string to the file.
  61   ASSERT_EQ(static_cast<int>(data.size()),
  62             base::WriteFile(fake_minidump, data.c_str(), data.size()));
  63
  64   base::FilePath new_minidump = minidump_dir.Append("minidump.dmp");
  65   DummyMinidumpGenerator generator(fake_minidump.value());
  66   ASSERT_TRUE(generator.Generate(new_minidump.value()));
  67
  68   // Original file should not exist, and new file should contain original
  69   // contents.
  70   std::string copied_data;
  71   EXPECT_FALSE(base::PathExists(fake_minidump));
  72   ASSERT_TRUE(base::PathExists(new_minidump));
  73   EXPECT_TRUE(base::ReadFileToString(new_minidump, &copied_data));
  74   EXPECT_EQ(data, copied_data);
  75 }
  76
  77 }  // namespace chromecast