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/**
* Copyright (C) 2012 10gen Inc.
*/
/**
* Unit tests of the unittest framework itself.
*/
#include "mongo/logger/console.h"
#include <iostream>
#include <ostream>
#include <sstream>
#include <string>
#include "mongo/unittest/unittest.h"
namespace {
using std::cout;
using std::endl;
using std::ostream;
using std::string;
using std::stringstream;
TEST(ConsoleTest, testUtf8) {
// this constant should match ConsoleStreamBuffer::bufferSize in console.cpp
const size_t bufferSize = 1024U;
mongo::Console console;
ostream& out = console.out();
// example unicode code points are from:
// http://en.wikipedia.org/wiki/UTF-8#Examples
struct {
size_t length;
const char * utf8CodePoint;
} data[] = {
{ 2U, "\xc2\xa2" }, // U+0024
{ 3U, "\xe2\x82\xac" }, // U+20AC
{ 4U, "\xf0\xa4\xad\xa2" }, // U+24B62
{ 0, "unused" },
};
// generate strings with unicode point located near end of buffer
// to see how console stream handles incomplete unicode multi-byte sequences
// to see these multibtye code points in the Windows terminal, set the console font
// to Lucida. Currently the 4-byte sequence used in the test data is still not being
// displayed properly.
for (int i = 0; data[i].length > 0; i++) {
for (size_t prefixLength = 0; prefixLength <= data[i].length; prefixLength++) {
stringstream descriptionStream;
descriptionStream << "ConsoleTest::testUtf8 - checking handling of "
<< "multi-byte sequence. This line contains "
<< prefixLength << " of " << data[i].length << "-byte sequence "
<< "before the end of the console's internal "
<< bufferSize << "-byte buffer";
string description = descriptionStream.str();
size_t padLength = bufferSize - prefixLength;
string padding(padLength - description.length(), '.');
string line = description + padding + data[i].utf8CodePoint;
out << line << endl;
}
}
// check if out is std::cout
out << "ConsoleTest::testUtf8 - Console::out() is using "
<< (out.rdbuf() == cout.rdbuf() ? "std::cout" : "custom output stream") << endl;
}
} // namespace
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