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// Copyright 2022 The Tint Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "src/tint/reflection.h"
#include "gtest/gtest.h"
namespace tint {
namespace {
struct S {
int i;
unsigned u;
bool b;
TINT_REFLECT(i, u, b);
};
static_assert(!HasReflection<int>);
static_assert(HasReflection<S>);
TEST(ReflectionTest, ForeachFieldConst) {
const S s{1, 2, true};
size_t field_idx = 0;
ForeachField(s, [&](auto& field) {
using T = std::decay_t<decltype(field)>;
switch (field_idx) {
case 0:
EXPECT_TRUE((std::is_same_v<T, int>));
EXPECT_EQ(field, static_cast<T>(1));
break;
case 1:
EXPECT_TRUE((std::is_same_v<T, unsigned>));
EXPECT_EQ(field, static_cast<T>(2));
break;
case 2:
EXPECT_TRUE((std::is_same_v<T, bool>));
EXPECT_EQ(field, static_cast<T>(true));
break;
default:
FAIL() << "unexpected field";
break;
}
field_idx++;
});
}
TEST(ReflectionTest, ForeachFieldNonConst) {
S s{1, 2, true};
size_t field_idx = 0;
ForeachField(s, [&](auto& field) {
using T = std::decay_t<decltype(field)>;
switch (field_idx) {
case 0:
EXPECT_TRUE((std::is_same_v<T, int>));
EXPECT_EQ(field, static_cast<T>(1));
field = static_cast<T>(10);
break;
case 1:
EXPECT_TRUE((std::is_same_v<T, unsigned>));
EXPECT_EQ(field, static_cast<T>(2));
field = static_cast<T>(20);
break;
case 2:
EXPECT_TRUE((std::is_same_v<T, bool>));
EXPECT_EQ(field, static_cast<T>(true));
field = static_cast<T>(false);
break;
default:
FAIL() << "unexpected field";
break;
}
field_idx++;
});
EXPECT_EQ(s.i, 10);
EXPECT_EQ(s.u, 20u);
EXPECT_EQ(s.b, false);
}
} // namespace
} // namespace tint