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ossua280f7c2017-04-06 09:02:151/*
2 * Copyright 2017 The WebRTC Project Authors. All rights reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
10
Mirko Bonadei92ea95e2017-09-15 04:47:3111#include "rtc_base/string_to_number.h"
ossua280f7c2017-04-06 09:02:1512
Yves Gerey3e707812018-11-28 15:47:4913#include <stdint.h>
Yves Gerey665174f2018-06-19 13:03:0514#include <limits>
ossua280f7c2017-04-06 09:02:1515#include <string>
ossua280f7c2017-04-06 09:02:1516
Yves Gerey3e707812018-11-28 15:47:4917#include "test/gtest.h"
ossua280f7c2017-04-06 09:02:1518
19namespace rtc {
20
21namespace {
22// clang-format off
23using IntegerTypes =
24 ::testing::Types<char,
25 signed char, unsigned char, // NOLINT(runtime/int)
26 short, unsigned short, // NOLINT(runtime/int)
27 int, unsigned int, // NOLINT(runtime/int)
28 long, unsigned long, // NOLINT(runtime/int)
29 long long, unsigned long long, // NOLINT(runtime/int)
30 int8_t, uint8_t,
31 int16_t, uint16_t,
32 int32_t, uint32_t,
33 int64_t, uint64_t>;
34// clang-format on
35
36template <typename T>
37class BasicNumberTest : public ::testing::Test {};
38
Mirko Bonadeic84f6612019-01-31 11:20:5739TYPED_TEST_SUITE_P(BasicNumberTest);
ossua280f7c2017-04-06 09:02:1540
41TYPED_TEST_P(BasicNumberTest, TestValidNumbers) {
42 using T = TypeParam;
43 constexpr T min_value = std::numeric_limits<T>::lowest();
44 constexpr T max_value = std::numeric_limits<T>::max();
Danil Chapovalov4da18e82018-04-06 16:03:4645 constexpr T zero_value = 0;
ossua280f7c2017-04-06 09:02:1546 const std::string min_string = std::to_string(min_value);
47 const std::string max_string = std::to_string(max_value);
48 EXPECT_EQ(min_value, StringToNumber<T>(min_string));
49 EXPECT_EQ(min_value, StringToNumber<T>(min_string.c_str()));
50 EXPECT_EQ(max_value, StringToNumber<T>(max_string));
51 EXPECT_EQ(max_value, StringToNumber<T>(max_string.c_str()));
Danil Chapovalov4da18e82018-04-06 16:03:4652 EXPECT_EQ(zero_value, StringToNumber<T>("0"));
53 EXPECT_EQ(zero_value, StringToNumber<T>("-0"));
54 EXPECT_EQ(zero_value, StringToNumber<T>(std::string("-0000000000000")));
ossua280f7c2017-04-06 09:02:1555}
56
57TYPED_TEST_P(BasicNumberTest, TestInvalidNumbers) {
58 using T = TypeParam;
59 // Value ranges aren't strictly enforced in this test, since that would either
60 // require doctoring specific strings for each data type, which is a hassle
61 // across platforms, or to be able to do addition of values larger than the
62 // largest type, which is another hassle.
63 constexpr T min_value = std::numeric_limits<T>::lowest();
64 constexpr T max_value = std::numeric_limits<T>::max();
65 // If the type supports negative values, make the large negative value
66 // approximately ten times larger. If the type is unsigned, just use -2.
67 const std::string too_low_string =
68 (min_value == 0) ? "-2" : (std::to_string(min_value) + "1");
69 // Make the large value approximately ten times larger than the maximum.
70 const std::string too_large_string = std::to_string(max_value) + "1";
Danil Chapovalov0a1d1892018-06-21 09:48:2571 EXPECT_EQ(absl::nullopt, StringToNumber<T>(too_low_string));
72 EXPECT_EQ(absl::nullopt, StringToNumber<T>(too_low_string.c_str()));
73 EXPECT_EQ(absl::nullopt, StringToNumber<T>(too_large_string));
74 EXPECT_EQ(absl::nullopt, StringToNumber<T>(too_large_string.c_str()));
ossua280f7c2017-04-06 09:02:1575}
76
77TYPED_TEST_P(BasicNumberTest, TestInvalidInputs) {
78 using T = TypeParam;
79 const char kInvalidCharArray[] = "Invalid string containing 47";
80 const char kPlusMinusCharArray[] = "+-100";
81 const char kNumberFollowedByCruft[] = "640x480";
Danil Chapovalov0a1d1892018-06-21 09:48:2582 EXPECT_EQ(absl::nullopt, StringToNumber<T>(kInvalidCharArray));
83 EXPECT_EQ(absl::nullopt, StringToNumber<T>(std::string(kInvalidCharArray)));
84 EXPECT_EQ(absl::nullopt, StringToNumber<T>(kPlusMinusCharArray));
85 EXPECT_EQ(absl::nullopt, StringToNumber<T>(std::string(kPlusMinusCharArray)));
86 EXPECT_EQ(absl::nullopt, StringToNumber<T>(kNumberFollowedByCruft));
87 EXPECT_EQ(absl::nullopt,
ossua280f7c2017-04-06 09:02:1588 StringToNumber<T>(std::string(kNumberFollowedByCruft)));
Danil Chapovalov0a1d1892018-06-21 09:48:2589 EXPECT_EQ(absl::nullopt, StringToNumber<T>(" 5"));
90 EXPECT_EQ(absl::nullopt, StringToNumber<T>(" - 5"));
91 EXPECT_EQ(absl::nullopt, StringToNumber<T>("- 5"));
92 EXPECT_EQ(absl::nullopt, StringToNumber<T>(" -5"));
93 EXPECT_EQ(absl::nullopt, StringToNumber<T>("5 "));
ossua280f7c2017-04-06 09:02:1594}
95
Mirko Bonadeic84f6612019-01-31 11:20:5796REGISTER_TYPED_TEST_SUITE_P(BasicNumberTest,
97 TestValidNumbers,
98 TestInvalidNumbers,
99 TestInvalidInputs);
ossua280f7c2017-04-06 09:02:15100
101} // namespace
102
Mirko Bonadeic84f6612019-01-31 11:20:57103INSTANTIATE_TYPED_TEST_SUITE_P(StringToNumberTest_Integers,
104 BasicNumberTest,
105 IntegerTypes);
ossua280f7c2017-04-06 09:02:15106
107TEST(StringToNumberTest, TestSpecificValues) {
Danil Chapovalov0a1d1892018-06-21 09:48:25108 EXPECT_EQ(absl::nullopt, StringToNumber<uint8_t>("256"));
109 EXPECT_EQ(absl::nullopt, StringToNumber<uint8_t>("-256"));
110 EXPECT_EQ(absl::nullopt, StringToNumber<int8_t>("256"));
111 EXPECT_EQ(absl::nullopt, StringToNumber<int8_t>("-256"));
ossua280f7c2017-04-06 09:02:15112}
113
114} // namespace rtc