132 lines
3.8 KiB
C++
132 lines
3.8 KiB
C++
#include "test_runner_common.hpp"
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#include <cmath>
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#include <regex>
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using namespace mbgl;
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// Strip precision for numbers, so that we can compare evaluated results with fixtures.
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// Copied from JS expression harness.
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Value stripPrecision(const Value& value) {
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const double decimalSigFigs = 6;
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if (auto num = numericValue<double>(value)) {
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if (*num == 0) {
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return *num;
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}
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const double multiplier = std::pow(10, std::max(0.0, decimalSigFigs - std::ceil(std::log10(std::fabs(*num)))));
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// We strip precision twice in a row here to avoid cases where
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// stripping an already stripped number will modify its value
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// due to bad floating point precision luck
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// eg `Math.floor(8.16598 * 100000) / 100000` -> 8.16597
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const double firstStrip = std::floor(*num * multiplier) / multiplier;
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return std::floor(firstStrip * multiplier) / multiplier;
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}
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if (value.is<std::vector<Value>>()) {
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std::vector<Value> stripped;
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const auto& vec = value.get<std::vector<Value>>();
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stripped.reserve(vec.size());
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for (const auto& val : vec) {
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stripped.emplace_back(stripPrecision(val));
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}
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return stripped;
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} else if (value.is<std::unordered_map<std::string, Value>>()) {
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std::unordered_map<std::string, Value> stripped;
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const auto& map = value.get<std::unordered_map<std::string, Value>>();
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for (const auto& pair : map) {
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stripped.emplace(pair.first, stripPrecision(pair.second));
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}
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return stripped;
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}
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return value;
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}
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std::vector<std::string> tokenize(std::string str) {
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std::vector<std::string> tokens;
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std::regex re("\n");
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std::copy(std::regex_token_iterator<std::string::iterator>(str.begin(), str.end(), re, -1),
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std::regex_token_iterator<std::string::iterator>(),
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std::back_inserter(tokens));
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return tokens;
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}
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bool deepEqual(const Value& a, const Value& b) {
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const auto& anum = numericValue<double>(a);
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const auto& bnum = numericValue<double>(b);
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if (anum && bnum) {
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return stripPrecision(*anum) == stripPrecision(*bnum);
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}
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if (a.which() != b.which()) {
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return false;
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}
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if (a.getArray() && b.getArray()) {
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const auto& avec = *a.getArray();
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const auto& bvec = *b.getArray();
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if (avec.size() != bvec.size()) {
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return false;
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}
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for (std::size_t i = 0; i < avec.size(); ++i) {
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if (!deepEqual(avec[i], bvec[i])) {
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return false;
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}
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}
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return true;
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}
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if (a.getObject() && b.getObject()) {
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const auto& amap = *a.getObject();
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const auto& bmap = *b.getObject();
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if (amap.size() != bmap.size()) {
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return false;
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}
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for (const auto& pair : amap) {
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auto it = bmap.find(pair.first);
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if (it == bmap.end()) {
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return false;
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}
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if (!deepEqual(pair.second, it->second)) {
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return false;
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}
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}
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return true;
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}
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if (a == b) {
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return true;
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}
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if (a.getString() && b.getString()) {
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const auto& strA = *a.getString();
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const auto& strB = *b.getString();
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if (strA == strB) {
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return true;
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}
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try {
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double numA = std::stod(strA);
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double numB = std::stod(strB);
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return stripPrecision(numA) == stripPrecision(numB);
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} catch (...) {
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}
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}
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return false;
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}
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bool deepEqual(const std::optional<Value>& a, const std::optional<Value>& b) {
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if ((a && !b) || (!a && b)) {
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return false;
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}
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if (a && b) {
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return deepEqual(*a, *b);
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}
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return true;
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}
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