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#include "regexowner.h"
#include <regex.h>
#include "3rd-party/catch.hpp"
using namespace newsboat;
TEST_CASE("Regex matches basic posix regular expression", "[Regex]")
{
std::string errorMessage;
auto regex = Regex::compile("abc+", 0, errorMessage);
REQUIRE(errorMessage == "");
REQUIRE(regex);
const int max_matches = 1;
const auto matches = regex->matches("abc+others", max_matches, 0);
REQUIRE(matches.size() == 1);
REQUIRE(matches[0].first == 0);
REQUIRE(matches[0].second == 4);
}
TEST_CASE("Regex matches extended posix regular expression", "[Regex]")
{
std::string errorMessage;
auto regex = Regex::compile("aBc+", REG_EXTENDED | REG_ICASE, errorMessage);
REQUIRE(errorMessage == "");
REQUIRE(regex);
const int max_matches = 1;
const auto matches = regex->matches("AbCcCcCC and others", max_matches, 0);
REQUIRE(matches.size() == 1);
REQUIRE(matches[0].first == 0);
REQUIRE(matches[0].second == 8);
}
TEST_CASE("Regex returns empty vector when regex is valid but there is no match",
"[Regex]")
{
std::string errorMessage;
auto regex = Regex::compile("abc", 0, errorMessage);
REQUIRE(errorMessage == "");
REQUIRE(regex);
const int max_matches = 1;
const auto matches = regex->matches("not a match", max_matches, 0);
REQUIRE(matches.size() == 0);
}
TEST_CASE("Regex returns at most max_results matches", "[Regex]")
{
std::string errorMessage;
auto regex = Regex::compile("(a)(b)(c)", REG_EXTENDED, errorMessage);
REQUIRE(errorMessage == "");
REQUIRE(regex);
const int max_matches = 2;
const auto matches = regex->matches("abc", max_matches, 0);
REQUIRE(matches.size() == 2);
REQUIRE(matches[0].first == 0);
REQUIRE(matches[0].second == 3);
REQUIRE(matches[1].first == 0);
REQUIRE(matches[1].second == 1);
}
TEST_CASE("Regex returns no more results than available", "[Regex]")
{
std::string errorMessage;
auto regex = Regex::compile("abc", REG_EXTENDED, errorMessage);
REQUIRE(errorMessage == "");
REQUIRE(regex);
const int max_matches = 10;
const auto matches = regex->matches("abc", max_matches, 0);
REQUIRE(matches.size() == 1);
REQUIRE(matches[0].first == 0);
REQUIRE(matches[0].second == 3);
}
TEST_CASE("Regex returns error on invalid regex", "[Regex]")
{
std::string errorMessage;
auto regex = Regex::compile("(abc", REG_EXTENDED, errorMessage);
REQUIRE_FALSE(errorMessage.empty());
// The message shouldn't contain a C string terminator (NUL) at the end
REQUIRE(errorMessage.back() != 0);
REQUIRE_FALSE(regex);
}
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