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// Copyright (c) 2018 The LevelDB Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file. See the AUTHORS file for names of contributors.
#include "util/logging.h"
#include <limits>
#include <string>
#include "third_party/googletest/googletest/include/gtest/gtest.h"
#include "leveldb/slice.h"
namespace leveldb {
TEST(Logging, NumberToString) {
ASSERT_EQ("0", NumberToString(0));
ASSERT_EQ("1", NumberToString(1));
ASSERT_EQ("9", NumberToString(9));
ASSERT_EQ("10", NumberToString(10));
ASSERT_EQ("11", NumberToString(11));
ASSERT_EQ("19", NumberToString(19));
ASSERT_EQ("99", NumberToString(99));
ASSERT_EQ("100", NumberToString(100));
ASSERT_EQ("109", NumberToString(109));
ASSERT_EQ("190", NumberToString(190));
ASSERT_EQ("123", NumberToString(123));
ASSERT_EQ("12345678", NumberToString(12345678));
static_assert(std::numeric_limits<uint64_t>::max() == 18446744073709551615U,
"Test consistency check");
ASSERT_EQ("18446744073709551000", NumberToString(18446744073709551000U));
ASSERT_EQ("18446744073709551600", NumberToString(18446744073709551600U));
ASSERT_EQ("18446744073709551610", NumberToString(18446744073709551610U));
ASSERT_EQ("18446744073709551614", NumberToString(18446744073709551614U));
ASSERT_EQ("18446744073709551615", NumberToString(18446744073709551615U));
}
void ConsumeDecimalNumberRoundtripTest(uint64_t number,
const std::string& padding = "") {
std::string decimal_number = NumberToString(number);
std::string input_string = decimal_number + padding;
Slice input(input_string);
Slice output = input;
uint64_t result;
ASSERT_TRUE(ConsumeDecimalNumber(&output, &result));
ASSERT_EQ(number, result);
ASSERT_EQ(decimal_number.size(), output.data() - input.data());
ASSERT_EQ(padding.size(), output.size());
}
TEST(Logging, ConsumeDecimalNumberRoundtrip) {
ConsumeDecimalNumberRoundtripTest(0);
ConsumeDecimalNumberRoundtripTest(1);
ConsumeDecimalNumberRoundtripTest(9);
ConsumeDecimalNumberRoundtripTest(10);
ConsumeDecimalNumberRoundtripTest(11);
ConsumeDecimalNumberRoundtripTest(19);
ConsumeDecimalNumberRoundtripTest(99);
ConsumeDecimalNumberRoundtripTest(100);
ConsumeDecimalNumberRoundtripTest(109);
ConsumeDecimalNumberRoundtripTest(190);
ConsumeDecimalNumberRoundtripTest(123);
ASSERT_EQ("12345678", NumberToString(12345678));
for (uint64_t i = 0; i < 100; ++i) {
uint64_t large_number = std::numeric_limits<uint64_t>::max() - i;
ConsumeDecimalNumberRoundtripTest(large_number);
}
}
TEST(Logging, ConsumeDecimalNumberRoundtripWithPadding) {
ConsumeDecimalNumberRoundtripTest(0, " ");
ConsumeDecimalNumberRoundtripTest(1, "abc");
ConsumeDecimalNumberRoundtripTest(9, "x");
ConsumeDecimalNumberRoundtripTest(10, "_");
ConsumeDecimalNumberRoundtripTest(11, std::string("\0\0\0", 3));
ConsumeDecimalNumberRoundtripTest(19, "abc");
ConsumeDecimalNumberRoundtripTest(99, "padding");
ConsumeDecimalNumberRoundtripTest(100, " ");
for (uint64_t i = 0; i < 100; ++i) {
uint64_t large_number = std::numeric_limits<uint64_t>::max() - i;
ConsumeDecimalNumberRoundtripTest(large_number, "pad");
}
}
void ConsumeDecimalNumberOverflowTest(const std::string& input_string) {
Slice input(input_string);
Slice output = input;
uint64_t result;
ASSERT_EQ(false, ConsumeDecimalNumber(&output, &result));
}
TEST(Logging, ConsumeDecimalNumberOverflow) {
static_assert(std::numeric_limits<uint64_t>::max() == 18446744073709551615U,
"Test consistency check");
ConsumeDecimalNumberOverflowTest("18446744073709551616");
ConsumeDecimalNumberOverflowTest("18446744073709551617");
ConsumeDecimalNumberOverflowTest("18446744073709551618");
ConsumeDecimalNumberOverflowTest("18446744073709551619");
ConsumeDecimalNumberOverflowTest("18446744073709551620");
ConsumeDecimalNumberOverflowTest("18446744073709551621");
ConsumeDecimalNumberOverflowTest("18446744073709551622");
ConsumeDecimalNumberOverflowTest("18446744073709551623");
ConsumeDecimalNumberOverflowTest("18446744073709551624");
ConsumeDecimalNumberOverflowTest("18446744073709551625");
ConsumeDecimalNumberOverflowTest("18446744073709551626");
ConsumeDecimalNumberOverflowTest("18446744073709551700");
ConsumeDecimalNumberOverflowTest("99999999999999999999");
}
void ConsumeDecimalNumberNoDigitsTest(const std::string& input_string) {
Slice input(input_string);
Slice output = input;
uint64_t result;
ASSERT_EQ(false, ConsumeDecimalNumber(&output, &result));
ASSERT_EQ(input.data(), output.data());
ASSERT_EQ(input.size(), output.size());
}
TEST(Logging, ConsumeDecimalNumberNoDigits) {
ConsumeDecimalNumberNoDigitsTest("");
ConsumeDecimalNumberNoDigitsTest(" ");
ConsumeDecimalNumberNoDigitsTest("a");
ConsumeDecimalNumberNoDigitsTest(" 123");
ConsumeDecimalNumberNoDigitsTest("a123");
ConsumeDecimalNumberNoDigitsTest(std::string("\000123", 4));
ConsumeDecimalNumberNoDigitsTest(std::string("\177123", 4));
ConsumeDecimalNumberNoDigitsTest(std::string("\377123", 4));
}
} // namespace leveldb
int main(int argc, char** argv) {
testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
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