Alex Deymo | a5cff22 | 2015-04-08 14:10:30 -0700 | [diff] [blame^] | 1 | // Copyright 2015 The Chromium OS 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 "bsdiff.h" |
| 6 | |
| 7 | #include <gtest/gtest.h> |
| 8 | #include <string> |
| 9 | #include <vector> |
| 10 | |
| 11 | #include "test_utils.h" |
| 12 | |
| 13 | using std::string; |
| 14 | using std::vector; |
| 15 | using test_utils::BsdiffPatchFile; |
| 16 | |
| 17 | class BsdiffTest : public testing::Test { |
| 18 | protected: |
| 19 | BsdiffTest() |
| 20 | : old_file_("bsdiff_oldfile.XXXXXX"), |
| 21 | new_file_("bsdiff_newfile.XXXXXX"), |
| 22 | patch_file_("bsdiff_patchfile.XXXXXX") { |
| 23 | } |
| 24 | ~BsdiffTest() override {} |
| 25 | |
| 26 | test_utils::ScopedTempFile old_file_; |
| 27 | test_utils::ScopedTempFile new_file_; |
| 28 | test_utils::ScopedTempFile patch_file_; |
| 29 | }; |
| 30 | |
| 31 | // Check that a file with no changes has a very small patch (no extra data). |
| 32 | TEST_F(BsdiffTest, EqualEmptyFiles) { |
| 33 | // Empty old and new files. |
| 34 | EXPECT_EQ(0, bsdiff(old_file_.filename().c_str(), |
| 35 | new_file_.filename().c_str(), |
| 36 | patch_file_.filename().c_str())); |
| 37 | BsdiffPatchFile patch; |
| 38 | EXPECT_TRUE(patch.LoadFromFile(patch_file_.filename())); |
| 39 | EXPECT_TRUE(patch.IsValid()); |
| 40 | |
| 41 | // An empty bz2 file will have 14 bytes. |
| 42 | EXPECT_EQ(14, patch.diff_len); |
| 43 | EXPECT_EQ(14, patch.extra_len); |
| 44 | } |
| 45 | |
| 46 | TEST_F(BsdiffTest, EqualSmallFiles) { |
| 47 | string some_text = "Hello world!"; |
| 48 | vector<uint8_t> vec_some_text(some_text.begin(), some_text.end()); |
| 49 | test_utils::WriteFile(old_file_.filename(), vec_some_text); |
| 50 | EXPECT_EQ(0, bsdiff(old_file_.filename().c_str(), |
| 51 | new_file_.filename().c_str(), |
| 52 | patch_file_.filename().c_str())); |
| 53 | BsdiffPatchFile patch; |
| 54 | EXPECT_TRUE(patch.LoadFromFile(patch_file_.filename())); |
| 55 | EXPECT_TRUE(patch.IsValid()); |
| 56 | |
| 57 | // An empty bz2 file will have 14 bytes. |
| 58 | EXPECT_EQ(14, patch.diff_len); |
| 59 | EXPECT_EQ(14, patch.extra_len); |
| 60 | } |