1 // Copyright 2024 The PDFium Authors
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 <stdint.h>
6
7 #include "core/fxcrt/span.h"
8 #include "core/fxcrt/zip.h"
9 #include "testing/gmock/include/gmock/gmock.h"
10 #include "testing/gtest/include/gtest/gtest.h"
11
12 using ::testing::ElementsAreArray;
13
14 namespace fxcrt {
15
TEST(Zip,EmptyZip)16 TEST(Zip, EmptyZip) {
17 pdfium::span<const int> nothing;
18 int stuff[] = {1, 2, 3};
19
20 auto zip_nothing_nothing = Zip(nothing, nothing);
21 EXPECT_EQ(zip_nothing_nothing.begin(), zip_nothing_nothing.end());
22
23 auto zip_nothing_stuff = Zip(nothing, stuff);
24 EXPECT_EQ(zip_nothing_stuff.begin(), zip_nothing_stuff.end());
25
26 auto zip_nothing_nothing_nothing = Zip(nothing, nothing, nothing);
27 EXPECT_EQ(zip_nothing_nothing_nothing.begin(),
28 zip_nothing_nothing_nothing.end());
29
30 auto zip_nothing_nothing_stuff = Zip(nothing, nothing, stuff);
31 EXPECT_EQ(zip_nothing_nothing_stuff.begin(), zip_nothing_nothing_stuff.end());
32
33 auto zip_nothing_stuff_stuff = Zip(nothing, stuff, stuff);
34 EXPECT_EQ(zip_nothing_stuff_stuff.begin(), zip_nothing_stuff_stuff.end());
35 }
36
TEST(Zip,ActualZip)37 TEST(Zip, ActualZip) {
38 const int stuff[] = {1, 2, 3};
39 const int expected[] = {1, 2, 3, 0};
40 int output[4] = {};
41
42 for (auto [in, out] : Zip(stuff, output)) {
43 out = in;
44 }
45 EXPECT_THAT(output, ElementsAreArray(expected));
46 }
47
TEST(Zip,ActualZip3)48 TEST(Zip, ActualZip3) {
49 const int stuff1[] = {1, 2, 3};
50 const int stuff2[] = {4, 5, 6};
51 const int expected[] = {5, 7, 9, 0};
52 int output[4] = {};
53
54 for (auto [in1, in2, out] : Zip(stuff1, stuff2, output)) {
55 out = in1 + in2;
56 }
57 EXPECT_THAT(output, ElementsAreArray(expected));
58 }
59
TEST(Zip,BadArgumentsZip)60 TEST(Zip, BadArgumentsZip) {
61 pdfium::span<const int> nothing;
62 int stuff[] = {1, 2, 3};
63
64 EXPECT_DEATH(Zip(stuff, nothing), ".*");
65 }
66
TEST(Zip,BadArgumentsZip3)67 TEST(Zip, BadArgumentsZip3) {
68 pdfium::span<const int> nothing;
69 int stuff[] = {1, 2, 3};
70
71 EXPECT_DEATH(Zip(stuff, stuff, nothing), ".*");
72 }
73
74 } // namespace fxcrt
75