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 "extents.h"
6
7#include <gtest/gtest.h>
8#include <vector>
9
10namespace bsdiff {
11
12// ex_t comparator used for testing.
13bool operator==(const struct ex_t& lhs, const struct ex_t& rhs) {
14  return lhs.off == rhs.off && lhs.len == rhs.len;
15}
16
17// PrintTo is used by gtest framework whenever it needs to print our type.
18void PrintTo(const struct ex_t& extent, ::std::ostream* os) {
19  *os << extent.off << ":" << extent.len;
20}
21
22class ExtentsTest : public testing::Test {
23 protected:
24  std::vector<ex_t> extents_;
25};
26
27TEST_F(ExtentsTest, CornerCasesHandledTest) {
28  EXPECT_TRUE(ParseExtentStr("", &extents_));
29  EXPECT_TRUE(extents_.empty());
30}
31
32TEST_F(ExtentsTest, SimpleCasesTest) {
33  EXPECT_TRUE(ParseExtentStr("10:20,30:40", &extents_));
34  std::vector<ex_t> expected_values = {{10, 20}, {30, 40}};
35  EXPECT_EQ(expected_values, extents_);
36}
37
38TEST_F(ExtentsTest, MalformedExtentsTest) {
39  std::vector<const char*> test_cases = {
40      ":", ",", "1,2", "1:", "1,", ":2", ",2", "1,2:3", "10:-1", "-2:10"};
41  for (const char* test_case : test_cases) {
42    std::vector<ex_t> extents;
43    EXPECT_FALSE(ParseExtentStr(test_case, &extents)) << "while testing case \""
44                                                      << test_case << "\"";
45    EXPECT_EQ(std::vector<ex_t>(), extents);
46  }
47}
48
49TEST_F(ExtentsTest, NegativeValuesTest) {
50  // |-1| is used as a special case to read zeros for that extent.
51  EXPECT_TRUE(ParseExtentStr("10:20,-1:40,50:60", &extents_));
52  std::vector<ex_t> expected_values = {{10, 20}, {-1, 40}, {50, 60}};
53  EXPECT_EQ(expected_values, extents_);
54}
55
56}  // namespace bsdiff
57