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116 lines
4.8 KiB
116 lines
4.8 KiB
/*
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* Copyright 2017 The WebRTC Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "rtc_base/string_to_number.h"
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#include <stdint.h>
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#include <limits>
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#include <string>
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#include "test/gtest.h"
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namespace rtc {
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namespace {
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// clang-format off
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using IntegerTypes =
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::testing::Types<char,
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signed char, unsigned char, // NOLINT(runtime/int)
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short, unsigned short, // NOLINT(runtime/int)
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int, unsigned int, // NOLINT(runtime/int)
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long, unsigned long, // NOLINT(runtime/int)
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long long, unsigned long long, // NOLINT(runtime/int)
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int8_t, uint8_t,
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int16_t, uint16_t,
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int32_t, uint32_t,
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int64_t, uint64_t>;
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// clang-format on
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template <typename T>
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class BasicNumberTest : public ::testing::Test {};
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TYPED_TEST_SUITE_P(BasicNumberTest);
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TYPED_TEST_P(BasicNumberTest, TestValidNumbers) {
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using T = TypeParam;
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constexpr T min_value = std::numeric_limits<T>::lowest();
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constexpr T max_value = std::numeric_limits<T>::max();
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constexpr T zero_value = 0;
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const std::string min_string = std::to_string(min_value);
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const std::string max_string = std::to_string(max_value);
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EXPECT_EQ(min_value, StringToNumber<T>(min_string));
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EXPECT_EQ(min_value, StringToNumber<T>(min_string.c_str()));
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EXPECT_EQ(max_value, StringToNumber<T>(max_string));
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EXPECT_EQ(max_value, StringToNumber<T>(max_string.c_str()));
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EXPECT_EQ(zero_value, StringToNumber<T>("0"));
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EXPECT_EQ(zero_value, StringToNumber<T>("-0"));
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EXPECT_EQ(zero_value, StringToNumber<T>(std::string("-0000000000000")));
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}
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TYPED_TEST_P(BasicNumberTest, TestInvalidNumbers) {
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using T = TypeParam;
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// Value ranges aren't strictly enforced in this test, since that would either
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// require doctoring specific strings for each data type, which is a hassle
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// across platforms, or to be able to do addition of values larger than the
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// largest type, which is another hassle.
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constexpr T min_value = std::numeric_limits<T>::lowest();
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constexpr T max_value = std::numeric_limits<T>::max();
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// If the type supports negative values, make the large negative value
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// approximately ten times larger. If the type is unsigned, just use -2.
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const std::string too_low_string =
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(min_value == 0) ? "-2" : (std::to_string(min_value) + "1");
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// Make the large value approximately ten times larger than the maximum.
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const std::string too_large_string = std::to_string(max_value) + "1";
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EXPECT_EQ(absl::nullopt, StringToNumber<T>(too_low_string));
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EXPECT_EQ(absl::nullopt, StringToNumber<T>(too_low_string.c_str()));
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EXPECT_EQ(absl::nullopt, StringToNumber<T>(too_large_string));
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EXPECT_EQ(absl::nullopt, StringToNumber<T>(too_large_string.c_str()));
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}
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TYPED_TEST_P(BasicNumberTest, TestInvalidInputs) {
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using T = TypeParam;
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const char kInvalidCharArray[] = "Invalid string containing 47";
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const char kPlusMinusCharArray[] = "+-100";
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const char kNumberFollowedByCruft[] = "640x480";
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EXPECT_EQ(absl::nullopt, StringToNumber<T>(kInvalidCharArray));
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EXPECT_EQ(absl::nullopt, StringToNumber<T>(std::string(kInvalidCharArray)));
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EXPECT_EQ(absl::nullopt, StringToNumber<T>(kPlusMinusCharArray));
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EXPECT_EQ(absl::nullopt, StringToNumber<T>(std::string(kPlusMinusCharArray)));
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EXPECT_EQ(absl::nullopt, StringToNumber<T>(kNumberFollowedByCruft));
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EXPECT_EQ(absl::nullopt,
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StringToNumber<T>(std::string(kNumberFollowedByCruft)));
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EXPECT_EQ(absl::nullopt, StringToNumber<T>(" 5"));
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EXPECT_EQ(absl::nullopt, StringToNumber<T>(" - 5"));
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EXPECT_EQ(absl::nullopt, StringToNumber<T>("- 5"));
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EXPECT_EQ(absl::nullopt, StringToNumber<T>(" -5"));
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EXPECT_EQ(absl::nullopt, StringToNumber<T>("5 "));
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}
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REGISTER_TYPED_TEST_SUITE_P(BasicNumberTest,
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TestValidNumbers,
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TestInvalidNumbers,
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TestInvalidInputs);
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} // namespace
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INSTANTIATE_TYPED_TEST_SUITE_P(StringToNumberTest_Integers,
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BasicNumberTest,
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IntegerTypes);
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TEST(StringToNumberTest, TestSpecificValues) {
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EXPECT_EQ(absl::nullopt, StringToNumber<uint8_t>("256"));
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EXPECT_EQ(absl::nullopt, StringToNumber<uint8_t>("-256"));
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EXPECT_EQ(absl::nullopt, StringToNumber<int8_t>("256"));
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EXPECT_EQ(absl::nullopt, StringToNumber<int8_t>("-256"));
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}
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} // namespace rtc
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