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// unit-test-path.cpp
#include "../../source/core/slang-string-util.h"
#include "test-context.h"
//#include <math.h>
#include <sstream>
using namespace Slang;
static bool _areEqual(const List<UnownedStringSlice>& lines, const UnownedStringSlice* checkLines, Int checkLinesCount)
{
if (checkLinesCount != lines.getCount())
{
return false;
}
for (Int i = 0; i < checkLinesCount; ++i)
{
if (lines[i] != checkLines[i])
{
return false;
}
}
return true;
}
static bool _checkLines(const UnownedStringSlice& input, const UnownedStringSlice* checkLines, Int checkLinesCount)
{
List<UnownedStringSlice> lines;
StringUtil::calcLines(input, lines);
return _areEqual(lines, checkLines, checkLinesCount);
}
static bool _checkLineParser(const UnownedStringSlice& input)
{
UnownedStringSlice remaining(input), line;
for (const auto parserLine : LineParser(input))
{
if (!StringUtil::extractLine(remaining, line) || line != parserLine)
{
return false;
}
}
return StringUtil::extractLine(remaining, line) == false;
}
static void _append(double v, StringBuilder& buf)
{
std::ostringstream stream;
stream.imbue(std::locale::classic());
stream.setf(std::ios::fixed, std::ios::floatfield);
stream.precision(20);
stream << std::scientific << v;
buf << stream.str().c_str();
}
// Unit of least precision
static int64_t _calcULPDistance(double a, double b)
{
// Save work if the floats are equal.
// Also handles +0 == -0
if (a == b)
{
return 0;
}
const int64_t max = int64_t((~uint64_t(0)) >> 1);
#if 0
// Max distance for NaN
if (isnan(a) || isnan(b))
{
return max;
}
// If one's infinite and they're not equal, max distance.
if (isinf(a) || isinf(b))
{
return max;
}
#endif
int64_t ia, ib;
memcpy(&ia, &a, sizeof(a));
memcpy(&ib, &b, sizeof(b));
// Don't compare differently-signed floats.
if ((ia < 0) != (ib < 0))
{
return max;
}
// Return the absolute value of the distance in ULPs.
int64_t distance = ia - ib;
return distance < 0 ? -distance : distance;
}
static bool _areApproximatelyEqual(double a, double b, double fixedEpsilon = 1e-10, int ulpsEpsilon = 100)
{
// Handle the near-zero case.
const double difference = abs(a - b);
if (difference <= fixedEpsilon)
{
return true;
}
return _calcULPDistance(a, b) <= ulpsEpsilon;
}
static void stringUnitTest()
{
{
UnownedStringSlice checkLines[] = { UnownedStringSlice::fromLiteral("") };
SLANG_CHECK(_checkLines(UnownedStringSlice::fromLiteral(""), checkLines, SLANG_COUNT_OF(checkLines)));
}
{
// Will emit no lines
SLANG_CHECK(_checkLines(UnownedStringSlice(nullptr, nullptr), nullptr, 0));
}
{
// Two lines - both empty
UnownedStringSlice checkLines[] = { UnownedStringSlice(), UnownedStringSlice()};
SLANG_CHECK(_checkLines(UnownedStringSlice::fromLiteral("\n"), checkLines, SLANG_COUNT_OF(checkLines)));
}
{
UnownedStringSlice checkLines[] = { UnownedStringSlice::fromLiteral("Hello"), UnownedStringSlice::fromLiteral("World!") };
SLANG_CHECK(_checkLines(UnownedStringSlice::fromLiteral("Hello\nWorld!"), checkLines, SLANG_COUNT_OF(checkLines)));
}
{
UnownedStringSlice checkLines[] = { UnownedStringSlice::fromLiteral("Hello"), UnownedStringSlice::fromLiteral("World!"), UnownedStringSlice() };
SLANG_CHECK(_checkLines(UnownedStringSlice::fromLiteral("Hello\n\rWorld!\n"), checkLines, SLANG_COUNT_OF(checkLines)));
}
{
SLANG_CHECK(_checkLineParser(UnownedStringSlice::fromLiteral("Hello\n\rWorld!\n")));
SLANG_CHECK(_checkLineParser(UnownedStringSlice::fromLiteral("\n")));
SLANG_CHECK(_checkLineParser(UnownedStringSlice::fromLiteral("")));
}
{
Int value;
SLANG_CHECK(SLANG_SUCCEEDED(StringUtil::parseInt(UnownedStringSlice("-10"), value)) && value == -10);
SLANG_CHECK(SLANG_SUCCEEDED(StringUtil::parseInt(UnownedStringSlice("0"), value)) && value == 0);
SLANG_CHECK(SLANG_SUCCEEDED(StringUtil::parseInt(UnownedStringSlice("-0"), value)) && value == 0);
SLANG_CHECK(SLANG_SUCCEEDED(StringUtil::parseInt(UnownedStringSlice("13824"), value)) && value == 13824);
SLANG_CHECK(SLANG_SUCCEEDED(StringUtil::parseInt(UnownedStringSlice("-13824"), value)) && value == -13824);
}
{
UnownedStringSlice values[] = { UnownedStringSlice("hello"), UnownedStringSlice("world"), UnownedStringSlice("!") };
ArrayView<UnownedStringSlice> valuesView(values, SLANG_COUNT_OF(values));
List<UnownedStringSlice> checkValues;
StringBuilder builder;
{
builder.Clear();
StringUtil::join(values, 0, ',', builder);
SLANG_CHECK(builder == "");
}
{
builder.Clear();
StringUtil::join(values, 1, ',', builder);
SLANG_CHECK(builder == "hello");
StringUtil::split(builder.getUnownedSlice(), ',', checkValues);
SLANG_CHECK(checkValues.getArrayView() == ArrayView<UnownedStringSlice>(values, 1));
}
{
builder.Clear();
StringUtil::join(values, 2, ',', builder);
SLANG_CHECK(builder == "hello,world");
StringUtil::split(builder.getUnownedSlice(), ',', checkValues);
SLANG_CHECK(checkValues.getArrayView() == ArrayView<UnownedStringSlice>(values, 2));
}
{
builder.Clear();
StringUtil::join(values, 3, UnownedStringSlice("ab"), builder);
SLANG_CHECK(builder == "helloabworldab!");
StringUtil::split(builder.getUnownedSlice(), UnownedStringSlice("ab"), checkValues);
SLANG_CHECK(checkValues.getArrayView() == ArrayView<UnownedStringSlice>(values, 3));
}
}
{
List<double> values;
values.add(0.0);
values.add(-0.0);
for (Index i = -300; i < 300; ++i)
{
double value = pow(10, i);
values.add(value);
values.add(-value);
values.addRange(value / 3);
values.addRange(-value / 3);
}
StringBuilder buf;
for (auto value : values)
{
buf.Clear();
_append(value, buf);
UnownedStringSlice slice = buf.getUnownedSlice();
double parsedValue;
SlangResult res = StringUtil::parseDouble(slice, parsedValue);
auto ulpsParsed = _calcULPDistance(value, parsedValue);
SLANG_CHECK(SLANG_SUCCEEDED(res));
// Check that they are equal
SLANG_CHECK(_areApproximatelyEqual(value, parsedValue));
}
}
{
List<int64_t> values;
values.add(0);
for (Index i = 0; i < 63; ++i)
{
auto value = int64_t(1) << i;
values.add(value);
values.add(-value);
}
StringBuilder buf;
for (auto value : values)
{
buf.Clear();
buf << value;
int64_t parsedValue;
UnownedStringSlice slice = buf.getUnownedSlice();
SlangResult res = StringUtil::parseInt64(slice, parsedValue);
SLANG_CHECK(SLANG_SUCCEEDED(res));
// Check that they are equal
SLANG_CHECK(value == parsedValue);
}
}
}
SLANG_UNIT_TEST("String", stringUnitTest);
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