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// Copyright (C) 2022 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include <catch_generators/namespaces.h>
#include <catch_generators/generators/qchar_generator.h>
#include <catch_generators/generators/qstring_generator.h>
#include <catch_conversions/qt_catch_conversions.h>
#include <catch/catch.hpp>
using namespace QDOC_CATCH_GENERATORS_ROOT_NAMESPACE;
#include <algorithm>
SCENARIO("Binding a QString to a length range", "[QString][Bounds]") {
GIVEN("A minimum length") {
auto minimum_length = GENERATE(take(100, random(0, 100)));
AND_GIVEN("A maximum length that is greater or equal than the minimum length") {
auto maximum_length = GENERATE_COPY(take(100, random(minimum_length, 100)));
WHEN("A QString is generated from those bounds") {
QString generated_string = GENERATE_COPY(take(1, string(character(), minimum_length, maximum_length)));
THEN("The generated string's length is in the range [minimum_length, maximum_length]") {
REQUIRE(generated_string.size() >= minimum_length);
REQUIRE(generated_string.size() <= maximum_length);
}
}
}
}
}
TEST_CASE("When the maximum length and the minimum length are zero all generated strings are the empty string", "[QString][Bounds][SpecialCase][BoundingValue]") {
QString generated_string = GENERATE(take(100, string(character(), 0, 0)));
REQUIRE(generated_string.isEmpty());
}
TEST_CASE("When the maximum length and the minimum length are equal, all generated strings have the same length equal to the given length", "[QString][Bounds][SpecialCase]") {
auto length = GENERATE(take(100, random(0, 100)));
auto generated_string = GENERATE_COPY(take(100, string(character(), length, length)));
REQUIRE(generated_string.size() == length);
}
SCENARIO("Limiting the characters that can compose a QString", "[QString][Contents]") {
GIVEN("A list of characters candidates") {
auto lower_character_bound = GENERATE(take(10, random(
static_cast<unsigned int>(std::numeric_limits<char16_t>::min()),
static_cast<unsigned int>(std::numeric_limits<char16_t>::max())
)));
auto upper_character_bound = GENERATE_COPY(take(10, random(lower_character_bound, static_cast<unsigned int>(std::numeric_limits<char16_t>::max()))));
auto character_candidates = character(lower_character_bound, upper_character_bound);
WHEN("A QString is generated from that list") {
QString generated_string = GENERATE_REF(take(100, string(std::move(character_candidates), 1, 50)));
THEN("The string is composed only of characters that are in the list of characters") {
REQUIRE(
std::all_of(
generated_string.cbegin(), generated_string.cend(),
[lower_character_bound, upper_character_bound](QChar element){ return element.unicode() >= lower_character_bound && element.unicode() <= upper_character_bound; }
)
);
}
}
}
}
TEST_CASE("The strings generated by a generator of empty string are all empty", "[QString][Contents]") {
QString generated_string = GENERATE(take(100, empty_string()));
REQUIRE(generated_string.isEmpty());
}
TEST_CASE("The first element of the passsed in generator is not lost", "[QString][GeneratorFirstElement][SpecialCase]") {
QChar first_value{'a'};
// REMARK: We use two values to avoid having the generator throw
// an exception if the first element is actually lost.
auto character_generator{Catch::Generators::values({first_value, QChar{'b'}})};
auto generated_string = GENERATE_REF(take(1, string(std::move(character_generator), 1, 1)));
REQUIRE(generated_string == QString{first_value});
}
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