/*
- * Copyright 2016 Facebook, Inc.
+ * Copyright 2017 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#include <folly/Range.h>
+#include <folly/portability/GTest.h>
#include <folly/portability/Memory.h>
+#include <folly/portability/SysMman.h>
-#include <sys/mman.h>
#include <array>
#include <iterator>
#include <limits>
#include <vector>
#include <boost/range/concepts.hpp>
#include <boost/algorithm/string/trim.hpp>
-#include <gtest/gtest.h>
using namespace folly;
using namespace folly::detail;
EXPECT_THROW(a.subpiece(6), std::out_of_range);
}
-constexpr char helloArray[] = "hello";
-
TEST(StringPiece, Constexpr) {
+ constexpr const char* helloArray = "hello";
+
constexpr StringPiece hello1("hello");
EXPECT_EQ("hello", hello1);
+ static_assert(hello1.size() == 5, "hello size should be 5 at compile time");
constexpr StringPiece hello2(helloArray);
EXPECT_EQ("hello", hello2);
+ static_assert(hello2.size() == 5, "hello size should be 5 at compile time");
}
TEST(StringPiece, Prefix) {
EXPECT_FALSE(a.startsWith('x'));
EXPECT_FALSE(a.startsWith("x"));
+ EXPECT_TRUE(a.startsWith("", folly::AsciiCaseInsensitive()));
+ EXPECT_TRUE(a.startsWith("hello", folly::AsciiCaseInsensitive()));
+ EXPECT_TRUE(a.startsWith("hellO", folly::AsciiCaseInsensitive()));
+ EXPECT_TRUE(a.startsWith("HELL", folly::AsciiCaseInsensitive()));
+ EXPECT_TRUE(a.startsWith("H", folly::AsciiCaseInsensitive()));
+ EXPECT_FALSE(a.startsWith("HELLOX", folly::AsciiCaseInsensitive()));
+ EXPECT_FALSE(a.startsWith("x", folly::AsciiCaseInsensitive()));
+ EXPECT_FALSE(a.startsWith("X", folly::AsciiCaseInsensitive()));
+
{
auto b = a;
EXPECT_TRUE(b.removePrefix(""));
EXPECT_FALSE(a.endsWith("x"));
EXPECT_FALSE(a.endsWith('x'));
+ EXPECT_TRUE(a.endsWith("", folly::AsciiCaseInsensitive()));
+ EXPECT_TRUE(a.endsWith("o", folly::AsciiCaseInsensitive()));
+ EXPECT_TRUE(a.endsWith("O", folly::AsciiCaseInsensitive()));
+ EXPECT_TRUE(a.endsWith("hello", folly::AsciiCaseInsensitive()));
+ EXPECT_TRUE(a.endsWith("hellO", folly::AsciiCaseInsensitive()));
+ EXPECT_FALSE(a.endsWith("xhello", folly::AsciiCaseInsensitive()));
+ EXPECT_FALSE(a.endsWith("Xhello", folly::AsciiCaseInsensitive()));
+ EXPECT_FALSE(a.endsWith("x", folly::AsciiCaseInsensitive()));
+ EXPECT_FALSE(a.endsWith("X", folly::AsciiCaseInsensitive()));
+
{
auto b = a;
EXPECT_TRUE(b.removeSuffix(""));
}
}
+TEST(StringPiece, Equals) {
+ StringPiece a("hello");
+
+ EXPECT_TRUE(a.equals("HELLO", AsciiCaseInsensitive()));
+ EXPECT_FALSE(a.equals("HELLOX", AsciiCaseInsensitive()));
+}
+
TEST(StringPiece, PrefixEmpty) {
StringPiece a;
EXPECT_TRUE(a.startsWith(""));
const auto maxValue = std::numeric_limits<StringPiece::value_type>::max();
// make the size ~big to avoid any edge-case branches for tiny haystacks
const int haystackSize = 50;
- for (size_t i = minValue; i <= maxValue; i++) { // <=
+ for (int i = minValue; i <= maxValue; i++) { // <=
needles.push_back(i);
}
EXPECT_EQ(StringPiece::npos, this->find_first_byte_of("", needles));
- for (size_t i = minValue; i <= maxValue; i++) {
+ for (int i = minValue; i <= maxValue; i++) {
EXPECT_EQ(0, this->find_first_byte_of(string(haystackSize, i), needles));
}
needles.append("these are redundant characters");
EXPECT_EQ(StringPiece::npos, this->find_first_byte_of("", needles));
- for (size_t i = minValue; i <= maxValue; i++) {
+ for (int i = minValue; i <= maxValue; i++) {
EXPECT_EQ(0, this->find_first_byte_of(string(haystackSize, i), needles));
}
}
}
}
+// Similar to the begin() template functions, but instread of returing
+// an iterator, return a pointer to data.
+template <class Container>
+typename Container::value_type* dataPtr(Container& cont) {
+ // NOTE: &cont[0] is undefined if cont is empty (it creates a
+ // reference to nullptr - which is not dereferenced, but still UBSAN).
+ return cont.data();
+}
+template <class T, size_t N>
+constexpr T* dataPtr(T (&arr)[N]) noexcept {
+ return &arr[0];
+}
+
template<class C>
void testRangeFunc(C&& x, size_t n) {
const auto& cx = x;
Range<const int*> r2 = range(std::forward<C>(x));
Range<const int*> r3 = range(cx);
Range<const int*> r5 = range(std::move(cx));
- EXPECT_EQ(r1.begin(), &x[0]);
- EXPECT_EQ(r1.end(), &x[n]);
+ EXPECT_EQ(r1.begin(), dataPtr(x));
+ EXPECT_EQ(r1.end(), dataPtr(x) + n);
EXPECT_EQ(n, r1.size());
EXPECT_EQ(n, r2.size());
EXPECT_EQ(n, r3.size());
testRangeFunc(x, 4);
}
+TEST(RangeFunc, ConstexprCArray) {
+ static constexpr const int numArray[4] = {3, 17, 1, 9};
+ constexpr const auto numArrayRange = range(numArray);
+ EXPECT_EQ(17, numArrayRange[1]);
+ constexpr const auto numArrayRangeSize = numArrayRange.size();
+ EXPECT_EQ(4, numArrayRangeSize);
+}
+
+TEST(RangeFunc, ConstexprStdArray) {
+ static constexpr const std::array<int, 4> numArray = {{3, 17, 1, 9}};
+ constexpr const auto numArrayRange = range(numArray);
+ EXPECT_EQ(17, numArrayRange[1]);
+ constexpr const auto numArrayRangeSize = numArrayRange.size();
+ EXPECT_EQ(4, numArrayRangeSize);
+}
+
+TEST(RangeFunc, ConstexprStdArrayZero) {
+ static constexpr const std::array<int, 0> numArray = {};
+ constexpr const auto numArrayRange = range(numArray);
+ constexpr const auto numArrayRangeSize = numArrayRange.size();
+ EXPECT_EQ(0, numArrayRangeSize);
+}
+
+TEST(RangeFunc, ConstexprIteratorPair) {
+ static constexpr const int numArray[4] = {3, 17, 1, 9};
+ constexpr const auto numPtr = static_cast<const int*>(numArray);
+ constexpr const auto numIterRange = range(numPtr + 1, numPtr + 3);
+ EXPECT_EQ(1, numIterRange[1]);
+ constexpr const auto numIterRangeSize = numIterRange.size();
+ EXPECT_EQ(2, numIterRangeSize);
+}
+
+TEST(RangeFunc, ConstexprCollection) {
+ class IntCollection {
+ public:
+ constexpr IntCollection(const int* d, size_t s) : data_(d), size_(s) {}
+ constexpr const int* data() const {
+ return data_;
+ }
+ constexpr size_t size() const {
+ return size_;
+ }
+
+ private:
+ const int* data_;
+ size_t size_;
+ };
+ static constexpr const int numArray[4] = {3, 17, 1, 9};
+ constexpr const auto numPtr = static_cast<const int*>(numArray);
+ constexpr const auto numColl = IntCollection(numPtr + 1, 2);
+ constexpr const auto numCollRange = range(numColl);
+ EXPECT_EQ(1, numCollRange[1]);
+ constexpr const auto numCollRangeSize = numCollRange.size();
+ EXPECT_EQ(2, numCollRangeSize);
+}
+
std::string get_rand_str(size_t size,
std::uniform_int_distribution<>& dist,
std::mt19937& gen) {
EXPECT_EQ(subpiece1.begin(), subpiece2.begin());
EXPECT_EQ(subpiece1.end(), subpiece2.end());
}
+
+TEST(Range, ArrayConstructors) {
+ auto charArray = std::array<char, 4>{{'t', 'e', 's', 't'}};
+ auto constCharArray = std::array<char, 6>{{'f', 'o', 'o', 'b', 'a', 'r'}};
+ auto emptyArray = std::array<char, 0>{};
+
+ auto sp1 = StringPiece{charArray};
+ EXPECT_EQ(4, sp1.size());
+ EXPECT_EQ(charArray.data(), sp1.data());
+
+ auto sp2 = StringPiece(constCharArray);
+ EXPECT_EQ(6, sp2.size());
+ EXPECT_EQ(constCharArray.data(), sp2.data());
+
+ auto msp = MutableStringPiece(charArray);
+ EXPECT_EQ(4, msp.size());
+ EXPECT_EQ(charArray.data(), msp.data());
+
+ auto esp = StringPiece(emptyArray);
+ EXPECT_EQ(0, esp.size());
+ EXPECT_EQ(nullptr, esp.data());
+
+ auto emsp = MutableStringPiece(emptyArray);
+ EXPECT_EQ(0, emsp.size());
+ EXPECT_EQ(nullptr, emsp.data());
+
+ static constexpr std::array<int, 4> numArray = {{3, 17, 1, 9}};
+ constexpr auto numRange = Range<const int*>{numArray};
+ EXPECT_EQ(17, numRange[1]);
+
+ static constexpr std::array<int, 0> emptyNumArray{};
+ constexpr auto emptyNumRange = Range<const int*>{emptyNumArray};
+ EXPECT_EQ(0, emptyNumRange.size());
+}
+
+TEST(Range, ConstexprAccessors) {
+ constexpr StringPiece piece = range("hello");
+ static_assert(piece.size() == 6u, "");
+ static_assert(piece.end() - piece.begin() == 6u, "");
+ static_assert(piece.data() == piece.begin(), "");
+ static_assert(piece.start() == piece.begin(), "");
+ static_assert(piece.cbegin() == piece.begin(), "");
+ static_assert(piece.cend() == piece.end(), "");
+ static_assert(*piece.begin() == 'h', "");
+ static_assert(*(piece.end() - 1) == '\0', "");
+}
projects / folly.git / blobdiff