788 lines
28 KiB
C++
788 lines
28 KiB
C++
// Copyright 2020 The Tint Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "src/tint/castable.h"
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#include <memory>
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#include <string>
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#include "gtest/gtest.h"
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namespace tint {
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struct Animal : public tint::Castable<Animal> {};
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struct Amphibian : public tint::Castable<Amphibian, Animal> {};
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struct Mammal : public tint::Castable<Mammal, Animal> {};
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struct Reptile : public tint::Castable<Reptile, Animal> {};
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struct Frog : public tint::Castable<Frog, Amphibian> {};
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struct Bear : public tint::Castable<Bear, Mammal> {};
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struct Lizard : public tint::Castable<Lizard, Reptile> {};
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struct Gecko : public tint::Castable<Gecko, Lizard> {};
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struct Iguana : public tint::Castable<Iguana, Lizard> {};
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namespace {
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TEST(CastableBase, Is) {
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std::unique_ptr<CastableBase> frog = std::make_unique<Frog>();
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std::unique_ptr<CastableBase> bear = std::make_unique<Bear>();
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std::unique_ptr<CastableBase> gecko = std::make_unique<Gecko>();
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ASSERT_TRUE(frog->Is<Animal>());
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ASSERT_TRUE(bear->Is<Animal>());
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ASSERT_TRUE(gecko->Is<Animal>());
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ASSERT_TRUE(frog->Is<Amphibian>());
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ASSERT_FALSE(bear->Is<Amphibian>());
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ASSERT_FALSE(gecko->Is<Amphibian>());
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ASSERT_FALSE(frog->Is<Mammal>());
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ASSERT_TRUE(bear->Is<Mammal>());
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ASSERT_FALSE(gecko->Is<Mammal>());
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ASSERT_FALSE(frog->Is<Reptile>());
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ASSERT_FALSE(bear->Is<Reptile>());
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ASSERT_TRUE(gecko->Is<Reptile>());
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}
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TEST(CastableBase, Is_kDontErrorOnImpossibleCast) {
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// Unlike TEST(CastableBase, Is), we're dynamically querying [A -> B] without
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// going via CastableBase.
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auto frog = std::make_unique<Frog>();
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auto bear = std::make_unique<Bear>();
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auto gecko = std::make_unique<Gecko>();
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ASSERT_TRUE((frog->Is<Animal, kDontErrorOnImpossibleCast>()));
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ASSERT_TRUE((bear->Is<Animal, kDontErrorOnImpossibleCast>()));
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ASSERT_TRUE((gecko->Is<Animal, kDontErrorOnImpossibleCast>()));
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ASSERT_TRUE((frog->Is<Amphibian, kDontErrorOnImpossibleCast>()));
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ASSERT_FALSE((bear->Is<Amphibian, kDontErrorOnImpossibleCast>()));
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ASSERT_FALSE((gecko->Is<Amphibian, kDontErrorOnImpossibleCast>()));
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ASSERT_FALSE((frog->Is<Mammal, kDontErrorOnImpossibleCast>()));
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ASSERT_TRUE((bear->Is<Mammal, kDontErrorOnImpossibleCast>()));
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ASSERT_FALSE((gecko->Is<Mammal, kDontErrorOnImpossibleCast>()));
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ASSERT_FALSE((frog->Is<Reptile, kDontErrorOnImpossibleCast>()));
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ASSERT_FALSE((bear->Is<Reptile, kDontErrorOnImpossibleCast>()));
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ASSERT_TRUE((gecko->Is<Reptile, kDontErrorOnImpossibleCast>()));
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}
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TEST(CastableBase, IsWithPredicate) {
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std::unique_ptr<CastableBase> frog = std::make_unique<Frog>();
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frog->Is<Animal>([&frog](const Animal* a) {
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EXPECT_EQ(a, frog.get());
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return true;
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});
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ASSERT_TRUE((frog->Is<Animal>([](const Animal*) { return true; })));
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ASSERT_FALSE((frog->Is<Animal>([](const Animal*) { return false; })));
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// Predicate not called if cast is invalid
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auto expect_not_called = [] { FAIL() << "Should not be called"; };
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ASSERT_FALSE((frog->Is<Bear>([&](const Animal*) {
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expect_not_called();
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return true;
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})));
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}
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TEST(CastableBase, IsAnyOf) {
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std::unique_ptr<CastableBase> frog = std::make_unique<Frog>();
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std::unique_ptr<CastableBase> bear = std::make_unique<Bear>();
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std::unique_ptr<CastableBase> gecko = std::make_unique<Gecko>();
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ASSERT_TRUE((frog->IsAnyOf<Animal, Mammal, Amphibian, Reptile>()));
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ASSERT_TRUE((frog->IsAnyOf<Mammal, Amphibian>()));
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ASSERT_TRUE((frog->IsAnyOf<Amphibian, Reptile>()));
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ASSERT_FALSE((frog->IsAnyOf<Mammal, Reptile>()));
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ASSERT_TRUE((bear->IsAnyOf<Animal, Mammal, Amphibian, Reptile>()));
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ASSERT_TRUE((bear->IsAnyOf<Mammal, Amphibian>()));
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ASSERT_TRUE((bear->IsAnyOf<Mammal, Reptile>()));
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ASSERT_FALSE((bear->IsAnyOf<Amphibian, Reptile>()));
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ASSERT_TRUE((gecko->IsAnyOf<Animal, Mammal, Amphibian, Reptile>()));
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ASSERT_TRUE((gecko->IsAnyOf<Mammal, Reptile>()));
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ASSERT_TRUE((gecko->IsAnyOf<Amphibian, Reptile>()));
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ASSERT_FALSE((gecko->IsAnyOf<Mammal, Amphibian>()));
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}
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TEST(CastableBase, As) {
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std::unique_ptr<CastableBase> frog = std::make_unique<Frog>();
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std::unique_ptr<CastableBase> bear = std::make_unique<Bear>();
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std::unique_ptr<CastableBase> gecko = std::make_unique<Gecko>();
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ASSERT_EQ(frog->As<Animal>(), static_cast<Animal*>(frog.get()));
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ASSERT_EQ(bear->As<Animal>(), static_cast<Animal*>(bear.get()));
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ASSERT_EQ(gecko->As<Animal>(), static_cast<Animal*>(gecko.get()));
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ASSERT_EQ(frog->As<Amphibian>(), static_cast<Amphibian*>(frog.get()));
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ASSERT_EQ(bear->As<Amphibian>(), nullptr);
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ASSERT_EQ(gecko->As<Amphibian>(), nullptr);
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ASSERT_EQ(frog->As<Mammal>(), nullptr);
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ASSERT_EQ(bear->As<Mammal>(), static_cast<Mammal*>(bear.get()));
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ASSERT_EQ(gecko->As<Mammal>(), nullptr);
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ASSERT_EQ(frog->As<Reptile>(), nullptr);
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ASSERT_EQ(bear->As<Reptile>(), nullptr);
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ASSERT_EQ(gecko->As<Reptile>(), static_cast<Reptile*>(gecko.get()));
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}
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TEST(CastableBase, As_kDontErrorOnImpossibleCast) {
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// Unlike TEST(CastableBase, As), we're dynamically casting [A -> B] without
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// going via CastableBase.
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auto frog = std::make_unique<Frog>();
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auto bear = std::make_unique<Bear>();
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auto gecko = std::make_unique<Gecko>();
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ASSERT_EQ((frog->As<Animal, kDontErrorOnImpossibleCast>()),
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static_cast<Animal*>(frog.get()));
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ASSERT_EQ((bear->As<Animal, kDontErrorOnImpossibleCast>()),
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static_cast<Animal*>(bear.get()));
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ASSERT_EQ((gecko->As<Animal, kDontErrorOnImpossibleCast>()),
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static_cast<Animal*>(gecko.get()));
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ASSERT_EQ((frog->As<Amphibian, kDontErrorOnImpossibleCast>()),
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static_cast<Amphibian*>(frog.get()));
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ASSERT_EQ((bear->As<Amphibian, kDontErrorOnImpossibleCast>()), nullptr);
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ASSERT_EQ((gecko->As<Amphibian, kDontErrorOnImpossibleCast>()), nullptr);
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ASSERT_EQ((frog->As<Mammal, kDontErrorOnImpossibleCast>()), nullptr);
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ASSERT_EQ((bear->As<Mammal, kDontErrorOnImpossibleCast>()),
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static_cast<Mammal*>(bear.get()));
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ASSERT_EQ((gecko->As<Mammal, kDontErrorOnImpossibleCast>()), nullptr);
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ASSERT_EQ((frog->As<Reptile, kDontErrorOnImpossibleCast>()), nullptr);
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ASSERT_EQ((bear->As<Reptile, kDontErrorOnImpossibleCast>()), nullptr);
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ASSERT_EQ((gecko->As<Reptile, kDontErrorOnImpossibleCast>()),
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static_cast<Reptile*>(gecko.get()));
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}
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TEST(Castable, Is) {
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std::unique_ptr<Animal> frog = std::make_unique<Frog>();
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std::unique_ptr<Animal> bear = std::make_unique<Bear>();
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std::unique_ptr<Animal> gecko = std::make_unique<Gecko>();
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ASSERT_TRUE(frog->Is<Animal>());
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ASSERT_TRUE(bear->Is<Animal>());
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ASSERT_TRUE(gecko->Is<Animal>());
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ASSERT_TRUE(frog->Is<Amphibian>());
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ASSERT_FALSE(bear->Is<Amphibian>());
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ASSERT_FALSE(gecko->Is<Amphibian>());
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ASSERT_FALSE(frog->Is<Mammal>());
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ASSERT_TRUE(bear->Is<Mammal>());
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ASSERT_FALSE(gecko->Is<Mammal>());
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ASSERT_FALSE(frog->Is<Reptile>());
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ASSERT_FALSE(bear->Is<Reptile>());
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ASSERT_TRUE(gecko->Is<Reptile>());
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}
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TEST(Castable, IsWithPredicate) {
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std::unique_ptr<Animal> frog = std::make_unique<Frog>();
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frog->Is([&frog](const Animal* a) {
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EXPECT_EQ(a, frog.get());
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return true;
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});
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ASSERT_TRUE((frog->Is([](const Animal*) { return true; })));
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ASSERT_FALSE((frog->Is([](const Animal*) { return false; })));
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// Predicate not called if cast is invalid
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auto expect_not_called = [] { FAIL() << "Should not be called"; };
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ASSERT_FALSE((frog->Is([&](const Bear*) {
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expect_not_called();
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return true;
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})));
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}
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TEST(Castable, As) {
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std::unique_ptr<Animal> frog = std::make_unique<Frog>();
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std::unique_ptr<Animal> bear = std::make_unique<Bear>();
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std::unique_ptr<Animal> gecko = std::make_unique<Gecko>();
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ASSERT_EQ(frog->As<Animal>(), static_cast<Animal*>(frog.get()));
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ASSERT_EQ(bear->As<Animal>(), static_cast<Animal*>(bear.get()));
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ASSERT_EQ(gecko->As<Animal>(), static_cast<Animal*>(gecko.get()));
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ASSERT_EQ(frog->As<Amphibian>(), static_cast<Amphibian*>(frog.get()));
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ASSERT_EQ(bear->As<Amphibian>(), nullptr);
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ASSERT_EQ(gecko->As<Amphibian>(), nullptr);
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ASSERT_EQ(frog->As<Mammal>(), nullptr);
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ASSERT_EQ(bear->As<Mammal>(), static_cast<Mammal*>(bear.get()));
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ASSERT_EQ(gecko->As<Mammal>(), nullptr);
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ASSERT_EQ(frog->As<Reptile>(), nullptr);
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ASSERT_EQ(bear->As<Reptile>(), nullptr);
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ASSERT_EQ(gecko->As<Reptile>(), static_cast<Reptile*>(gecko.get()));
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}
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TEST(Castable, SwitchNoDefault) {
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std::unique_ptr<Animal> frog = std::make_unique<Frog>();
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std::unique_ptr<Animal> bear = std::make_unique<Bear>();
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std::unique_ptr<Animal> gecko = std::make_unique<Gecko>();
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{
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bool frog_matched_amphibian = false;
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Switch(
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frog.get(), //
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[&](Reptile*) { FAIL() << "frog is not reptile"; },
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[&](Mammal*) { FAIL() << "frog is not mammal"; },
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[&](Amphibian* amphibian) {
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EXPECT_EQ(amphibian, frog.get());
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frog_matched_amphibian = true;
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});
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EXPECT_TRUE(frog_matched_amphibian);
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}
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{
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bool bear_matched_mammal = false;
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Switch(
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bear.get(), //
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[&](Reptile*) { FAIL() << "bear is not reptile"; },
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[&](Amphibian*) { FAIL() << "bear is not amphibian"; },
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[&](Mammal* mammal) {
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EXPECT_EQ(mammal, bear.get());
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bear_matched_mammal = true;
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});
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EXPECT_TRUE(bear_matched_mammal);
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}
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{
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bool gecko_matched_reptile = false;
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Switch(
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gecko.get(), //
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[&](Mammal*) { FAIL() << "gecko is not mammal"; },
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[&](Amphibian*) { FAIL() << "gecko is not amphibian"; },
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[&](Reptile* reptile) {
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EXPECT_EQ(reptile, gecko.get());
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gecko_matched_reptile = true;
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});
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EXPECT_TRUE(gecko_matched_reptile);
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}
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}
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TEST(Castable, SwitchWithUnusedDefault) {
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std::unique_ptr<Animal> frog = std::make_unique<Frog>();
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std::unique_ptr<Animal> bear = std::make_unique<Bear>();
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std::unique_ptr<Animal> gecko = std::make_unique<Gecko>();
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{
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bool frog_matched_amphibian = false;
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Switch(
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frog.get(), //
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[&](Reptile*) { FAIL() << "frog is not reptile"; },
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[&](Mammal*) { FAIL() << "frog is not mammal"; },
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[&](Amphibian* amphibian) {
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EXPECT_EQ(amphibian, frog.get());
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frog_matched_amphibian = true;
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},
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[&](Default) { FAIL() << "default should not have been selected"; });
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EXPECT_TRUE(frog_matched_amphibian);
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}
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{
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bool bear_matched_mammal = false;
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Switch(
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bear.get(), //
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[&](Reptile*) { FAIL() << "bear is not reptile"; },
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[&](Amphibian*) { FAIL() << "bear is not amphibian"; },
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[&](Mammal* mammal) {
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EXPECT_EQ(mammal, bear.get());
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bear_matched_mammal = true;
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},
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[&](Default) { FAIL() << "default should not have been selected"; });
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EXPECT_TRUE(bear_matched_mammal);
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}
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{
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bool gecko_matched_reptile = false;
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Switch(
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gecko.get(), //
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[&](Mammal*) { FAIL() << "gecko is not mammal"; },
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[&](Amphibian*) { FAIL() << "gecko is not amphibian"; },
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[&](Reptile* reptile) {
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EXPECT_EQ(reptile, gecko.get());
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gecko_matched_reptile = true;
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},
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[&](Default) { FAIL() << "default should not have been selected"; });
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EXPECT_TRUE(gecko_matched_reptile);
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}
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}
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TEST(Castable, SwitchDefault) {
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std::unique_ptr<Animal> frog = std::make_unique<Frog>();
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std::unique_ptr<Animal> bear = std::make_unique<Bear>();
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std::unique_ptr<Animal> gecko = std::make_unique<Gecko>();
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{
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bool frog_matched_default = false;
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Switch(
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frog.get(), //
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[&](Reptile*) { FAIL() << "frog is not reptile"; },
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[&](Mammal*) { FAIL() << "frog is not mammal"; },
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[&](Default) { frog_matched_default = true; });
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EXPECT_TRUE(frog_matched_default);
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}
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{
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bool bear_matched_default = false;
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Switch(
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bear.get(), //
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[&](Reptile*) { FAIL() << "bear is not reptile"; },
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[&](Amphibian*) { FAIL() << "bear is not amphibian"; },
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[&](Default) { bear_matched_default = true; });
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EXPECT_TRUE(bear_matched_default);
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}
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{
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bool gecko_matched_default = false;
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Switch(
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gecko.get(), //
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[&](Mammal*) { FAIL() << "gecko is not mammal"; },
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[&](Amphibian*) { FAIL() << "gecko is not amphibian"; },
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[&](Default) { gecko_matched_default = true; });
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EXPECT_TRUE(gecko_matched_default);
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}
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}
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TEST(Castable, SwitchMatchFirst) {
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std::unique_ptr<Animal> frog = std::make_unique<Frog>();
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{
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bool frog_matched_animal = false;
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Switch(
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frog.get(),
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[&](Animal* animal) {
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EXPECT_EQ(animal, frog.get());
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frog_matched_animal = true;
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},
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[&](Amphibian*) { FAIL() << "animal should have been matched first"; });
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EXPECT_TRUE(frog_matched_animal);
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}
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{
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bool frog_matched_amphibian = false;
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Switch(
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frog.get(),
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[&](Amphibian* amphibain) {
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EXPECT_EQ(amphibain, frog.get());
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frog_matched_amphibian = true;
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},
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[&](Animal*) { FAIL() << "amphibian should have been matched first"; });
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EXPECT_TRUE(frog_matched_amphibian);
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}
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}
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TEST(Castable, SwitchReturnValueWithDefault) {
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std::unique_ptr<Animal> frog = std::make_unique<Frog>();
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std::unique_ptr<Animal> bear = std::make_unique<Bear>();
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std::unique_ptr<Animal> gecko = std::make_unique<Gecko>();
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{
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const char* result = Switch(
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frog.get(), //
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[](Mammal*) { return "mammal"; }, //
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[](Amphibian*) { return "amphibian"; }, //
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[](Default) { return "unknown"; });
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static_assert(std::is_same_v<decltype(result), const char*>);
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EXPECT_EQ(std::string(result), "amphibian");
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}
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{
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const char* result = Switch(
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bear.get(), //
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[](Mammal*) { return "mammal"; }, //
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[](Amphibian*) { return "amphibian"; }, //
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[](Default) { return "unknown"; });
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static_assert(std::is_same_v<decltype(result), const char*>);
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EXPECT_EQ(std::string(result), "mammal");
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}
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{
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const char* result = Switch(
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gecko.get(), //
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[](Mammal*) { return "mammal"; }, //
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[](Amphibian*) { return "amphibian"; }, //
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[](Default) { return "unknown"; });
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static_assert(std::is_same_v<decltype(result), const char*>);
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EXPECT_EQ(std::string(result), "unknown");
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}
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}
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TEST(Castable, SwitchReturnValueWithoutDefault) {
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std::unique_ptr<Animal> frog = std::make_unique<Frog>();
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std::unique_ptr<Animal> bear = std::make_unique<Bear>();
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std::unique_ptr<Animal> gecko = std::make_unique<Gecko>();
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{
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const char* result = Switch(
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frog.get(), //
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[](Mammal*) { return "mammal"; }, //
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[](Amphibian*) { return "amphibian"; });
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static_assert(std::is_same_v<decltype(result), const char*>);
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EXPECT_EQ(std::string(result), "amphibian");
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}
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{
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const char* result = Switch(
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bear.get(), //
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[](Mammal*) { return "mammal"; }, //
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[](Amphibian*) { return "amphibian"; });
|
|
static_assert(std::is_same_v<decltype(result), const char*>);
|
|
EXPECT_EQ(std::string(result), "mammal");
|
|
}
|
|
{
|
|
auto* result = Switch(
|
|
gecko.get(), //
|
|
[](Mammal*) { return "mammal"; }, //
|
|
[](Amphibian*) { return "amphibian"; });
|
|
static_assert(std::is_same_v<decltype(result), const char*>);
|
|
EXPECT_EQ(result, nullptr);
|
|
}
|
|
}
|
|
|
|
TEST(Castable, SwitchInferPODReturnTypeWithDefault) {
|
|
std::unique_ptr<Animal> frog = std::make_unique<Frog>();
|
|
std::unique_ptr<Animal> bear = std::make_unique<Bear>();
|
|
std::unique_ptr<Animal> gecko = std::make_unique<Gecko>();
|
|
{
|
|
auto result = Switch(
|
|
frog.get(), //
|
|
[](Mammal*) { return 1; }, //
|
|
[](Amphibian*) { return 2.0f; }, //
|
|
[](Default) { return 3.0; });
|
|
static_assert(std::is_same_v<decltype(result), double>);
|
|
EXPECT_EQ(result, 2.0);
|
|
}
|
|
{
|
|
auto result = Switch(
|
|
bear.get(), //
|
|
[](Mammal*) { return 1.0; }, //
|
|
[](Amphibian*) { return 2.0f; }, //
|
|
[](Default) { return 3; });
|
|
static_assert(std::is_same_v<decltype(result), double>);
|
|
EXPECT_EQ(result, 1.0);
|
|
}
|
|
{
|
|
auto result = Switch(
|
|
gecko.get(), //
|
|
[](Mammal*) { return 1.0f; }, //
|
|
[](Amphibian*) { return 2; }, //
|
|
[](Default) { return 3.0; });
|
|
static_assert(std::is_same_v<decltype(result), double>);
|
|
EXPECT_EQ(result, 3.0);
|
|
}
|
|
}
|
|
|
|
TEST(Castable, SwitchInferPODReturnTypeWithoutDefault) {
|
|
std::unique_ptr<Animal> frog = std::make_unique<Frog>();
|
|
std::unique_ptr<Animal> bear = std::make_unique<Bear>();
|
|
std::unique_ptr<Animal> gecko = std::make_unique<Gecko>();
|
|
{
|
|
auto result = Switch(
|
|
frog.get(), //
|
|
[](Mammal*) { return 1; }, //
|
|
[](Amphibian*) { return 2.0f; });
|
|
static_assert(std::is_same_v<decltype(result), float>);
|
|
EXPECT_EQ(result, 2.0f);
|
|
}
|
|
{
|
|
auto result = Switch(
|
|
bear.get(), //
|
|
[](Mammal*) { return 1.0f; }, //
|
|
[](Amphibian*) { return 2; });
|
|
static_assert(std::is_same_v<decltype(result), float>);
|
|
EXPECT_EQ(result, 1.0f);
|
|
}
|
|
{
|
|
auto result = Switch(
|
|
gecko.get(), //
|
|
[](Mammal*) { return 1.0; }, //
|
|
[](Amphibian*) { return 2.0f; });
|
|
static_assert(std::is_same_v<decltype(result), double>);
|
|
EXPECT_EQ(result, 0.0);
|
|
}
|
|
}
|
|
|
|
TEST(Castable, SwitchInferCastableReturnTypeWithDefault) {
|
|
std::unique_ptr<Animal> frog = std::make_unique<Frog>();
|
|
std::unique_ptr<Animal> bear = std::make_unique<Bear>();
|
|
std::unique_ptr<Animal> gecko = std::make_unique<Gecko>();
|
|
{
|
|
auto* result = Switch(
|
|
frog.get(), //
|
|
[](Mammal* p) { return p; }, //
|
|
[](Amphibian*) { return nullptr; }, //
|
|
[](Default) { return nullptr; });
|
|
static_assert(std::is_same_v<decltype(result), Mammal*>);
|
|
EXPECT_EQ(result, nullptr);
|
|
}
|
|
{
|
|
auto* result = Switch(
|
|
bear.get(), //
|
|
[](Mammal* p) { return p; }, //
|
|
[](Amphibian* p) { return const_cast<const Amphibian*>(p); },
|
|
[](Default) { return nullptr; });
|
|
static_assert(std::is_same_v<decltype(result), const Animal*>);
|
|
EXPECT_EQ(result, bear.get());
|
|
}
|
|
{
|
|
auto* result = Switch(
|
|
gecko.get(), //
|
|
[](Mammal* p) { return p; }, //
|
|
[](Amphibian* p) { return p; }, //
|
|
[](Default) -> CastableBase* { return nullptr; });
|
|
static_assert(std::is_same_v<decltype(result), CastableBase*>);
|
|
EXPECT_EQ(result, nullptr);
|
|
}
|
|
}
|
|
|
|
TEST(Castable, SwitchInferCastableReturnTypeWithoutDefault) {
|
|
std::unique_ptr<Animal> frog = std::make_unique<Frog>();
|
|
std::unique_ptr<Animal> bear = std::make_unique<Bear>();
|
|
std::unique_ptr<Animal> gecko = std::make_unique<Gecko>();
|
|
{
|
|
auto* result = Switch(
|
|
frog.get(), //
|
|
[](Mammal* p) { return p; }, //
|
|
[](Amphibian*) { return nullptr; });
|
|
static_assert(std::is_same_v<decltype(result), Mammal*>);
|
|
EXPECT_EQ(result, nullptr);
|
|
}
|
|
{
|
|
auto* result = Switch(
|
|
bear.get(), //
|
|
[](Mammal* p) { return p; }, //
|
|
[](Amphibian* p) { return const_cast<const Amphibian*>(p); }); //
|
|
static_assert(std::is_same_v<decltype(result), const Animal*>);
|
|
EXPECT_EQ(result, bear.get());
|
|
}
|
|
{
|
|
auto* result = Switch(
|
|
gecko.get(), //
|
|
[](Mammal* p) { return p; }, //
|
|
[](Amphibian* p) { return p; });
|
|
static_assert(std::is_same_v<decltype(result), Animal*>);
|
|
EXPECT_EQ(result, nullptr);
|
|
}
|
|
}
|
|
|
|
TEST(Castable, SwitchExplicitPODReturnTypeWithDefault) {
|
|
std::unique_ptr<Animal> frog = std::make_unique<Frog>();
|
|
std::unique_ptr<Animal> bear = std::make_unique<Bear>();
|
|
std::unique_ptr<Animal> gecko = std::make_unique<Gecko>();
|
|
{
|
|
auto result = Switch<double>(
|
|
frog.get(), //
|
|
[](Mammal*) { return 1; }, //
|
|
[](Amphibian*) { return 2.0f; }, //
|
|
[](Default) { return 3.0; });
|
|
static_assert(std::is_same_v<decltype(result), double>);
|
|
EXPECT_EQ(result, 2.0f);
|
|
}
|
|
{
|
|
auto result = Switch<double>(
|
|
bear.get(), //
|
|
[](Mammal*) { return 1; }, //
|
|
[](Amphibian*) { return 2; }, //
|
|
[](Default) { return 3; });
|
|
static_assert(std::is_same_v<decltype(result), double>);
|
|
EXPECT_EQ(result, 1.0f);
|
|
}
|
|
{
|
|
auto result = Switch<double>(
|
|
gecko.get(), //
|
|
[](Mammal*) { return 1.0f; }, //
|
|
[](Amphibian*) { return 2.0f; }, //
|
|
[](Default) { return 3.0f; });
|
|
static_assert(std::is_same_v<decltype(result), double>);
|
|
EXPECT_EQ(result, 3.0f);
|
|
}
|
|
}
|
|
|
|
TEST(Castable, SwitchExplicitPODReturnTypeWithoutDefault) {
|
|
std::unique_ptr<Animal> frog = std::make_unique<Frog>();
|
|
std::unique_ptr<Animal> bear = std::make_unique<Bear>();
|
|
std::unique_ptr<Animal> gecko = std::make_unique<Gecko>();
|
|
{
|
|
auto result = Switch<double>(
|
|
frog.get(), //
|
|
[](Mammal*) { return 1; }, //
|
|
[](Amphibian*) { return 2.0f; });
|
|
static_assert(std::is_same_v<decltype(result), double>);
|
|
EXPECT_EQ(result, 2.0f);
|
|
}
|
|
{
|
|
auto result = Switch<double>(
|
|
bear.get(), //
|
|
[](Mammal*) { return 1.0f; }, //
|
|
[](Amphibian*) { return 2; });
|
|
static_assert(std::is_same_v<decltype(result), double>);
|
|
EXPECT_EQ(result, 1.0f);
|
|
}
|
|
{
|
|
auto result = Switch<double>(
|
|
gecko.get(), //
|
|
[](Mammal*) { return 1.0; }, //
|
|
[](Amphibian*) { return 2.0f; });
|
|
static_assert(std::is_same_v<decltype(result), double>);
|
|
EXPECT_EQ(result, 0.0);
|
|
}
|
|
}
|
|
|
|
TEST(Castable, SwitchExplicitCastableReturnTypeWithDefault) {
|
|
std::unique_ptr<Animal> frog = std::make_unique<Frog>();
|
|
std::unique_ptr<Animal> bear = std::make_unique<Bear>();
|
|
std::unique_ptr<Animal> gecko = std::make_unique<Gecko>();
|
|
{
|
|
auto* result = Switch<Animal>(
|
|
frog.get(), //
|
|
[](Mammal* p) { return p; }, //
|
|
[](Amphibian*) { return nullptr; }, //
|
|
[](Default) { return nullptr; });
|
|
static_assert(std::is_same_v<decltype(result), Animal*>);
|
|
EXPECT_EQ(result, nullptr);
|
|
}
|
|
{
|
|
auto* result = Switch<CastableBase>(
|
|
bear.get(), //
|
|
[](Mammal* p) { return p; }, //
|
|
[](Amphibian* p) { return const_cast<const Amphibian*>(p); },
|
|
[](Default) { return nullptr; });
|
|
static_assert(std::is_same_v<decltype(result), const CastableBase*>);
|
|
EXPECT_EQ(result, bear.get());
|
|
}
|
|
{
|
|
auto* result = Switch<const Animal>(
|
|
gecko.get(), //
|
|
[](Mammal* p) { return p; }, //
|
|
[](Amphibian* p) { return p; }, //
|
|
[](Default) { return nullptr; });
|
|
static_assert(std::is_same_v<decltype(result), const Animal*>);
|
|
EXPECT_EQ(result, nullptr);
|
|
}
|
|
}
|
|
|
|
TEST(Castable, SwitchExplicitCastableReturnTypeWithoutDefault) {
|
|
std::unique_ptr<Animal> frog = std::make_unique<Frog>();
|
|
std::unique_ptr<Animal> bear = std::make_unique<Bear>();
|
|
std::unique_ptr<Animal> gecko = std::make_unique<Gecko>();
|
|
{
|
|
auto* result = Switch<Animal>(
|
|
frog.get(), //
|
|
[](Mammal* p) { return p; }, //
|
|
[](Amphibian*) { return nullptr; });
|
|
static_assert(std::is_same_v<decltype(result), Animal*>);
|
|
EXPECT_EQ(result, nullptr);
|
|
}
|
|
{
|
|
auto* result = Switch<CastableBase>(
|
|
bear.get(), //
|
|
[](Mammal* p) { return p; }, //
|
|
[](Amphibian* p) { return const_cast<const Amphibian*>(p); }); //
|
|
static_assert(std::is_same_v<decltype(result), const CastableBase*>);
|
|
EXPECT_EQ(result, bear.get());
|
|
}
|
|
{
|
|
auto* result = Switch<const Animal*>(
|
|
gecko.get(), //
|
|
[](Mammal* p) { return p; }, //
|
|
[](Amphibian* p) { return p; });
|
|
static_assert(std::is_same_v<decltype(result), const Animal*>);
|
|
EXPECT_EQ(result, nullptr);
|
|
}
|
|
}
|
|
|
|
TEST(Castable, SwitchNull) {
|
|
Animal* null = nullptr;
|
|
Switch(
|
|
null, //
|
|
[&](Amphibian*) { FAIL() << "should not be called"; },
|
|
[&](Animal*) { FAIL() << "should not be called"; });
|
|
}
|
|
|
|
TEST(Castable, SwitchNullNoDefault) {
|
|
Animal* null = nullptr;
|
|
bool default_called = false;
|
|
Switch(
|
|
null, //
|
|
[&](Amphibian*) { FAIL() << "should not be called"; },
|
|
[&](Animal*) { FAIL() << "should not be called"; },
|
|
[&](Default) { default_called = true; });
|
|
EXPECT_TRUE(default_called);
|
|
}
|
|
|
|
// IsCastable static tests
|
|
static_assert(IsCastable<CastableBase>);
|
|
static_assert(IsCastable<Animal>);
|
|
static_assert(IsCastable<Ignore, Frog, Bear>);
|
|
static_assert(IsCastable<Mammal, Ignore, Amphibian, Gecko>);
|
|
static_assert(!IsCastable<Mammal, int, Amphibian, Ignore, Gecko>);
|
|
static_assert(!IsCastable<bool>);
|
|
static_assert(!IsCastable<int, float>);
|
|
static_assert(!IsCastable<Ignore>);
|
|
|
|
// CastableCommonBase static tests
|
|
static_assert(std::is_same_v<Animal, CastableCommonBase<Animal>>);
|
|
static_assert(std::is_same_v<Amphibian, CastableCommonBase<Amphibian>>);
|
|
static_assert(std::is_same_v<Mammal, CastableCommonBase<Mammal>>);
|
|
static_assert(std::is_same_v<Reptile, CastableCommonBase<Reptile>>);
|
|
static_assert(std::is_same_v<Frog, CastableCommonBase<Frog>>);
|
|
static_assert(std::is_same_v<Bear, CastableCommonBase<Bear>>);
|
|
static_assert(std::is_same_v<Lizard, CastableCommonBase<Lizard>>);
|
|
static_assert(std::is_same_v<Gecko, CastableCommonBase<Gecko>>);
|
|
static_assert(std::is_same_v<Iguana, CastableCommonBase<Iguana>>);
|
|
|
|
static_assert(std::is_same_v<Animal, CastableCommonBase<Animal, Animal>>);
|
|
static_assert(
|
|
std::is_same_v<Amphibian, CastableCommonBase<Amphibian, Amphibian>>);
|
|
static_assert(std::is_same_v<Mammal, CastableCommonBase<Mammal, Mammal>>);
|
|
static_assert(std::is_same_v<Reptile, CastableCommonBase<Reptile, Reptile>>);
|
|
static_assert(std::is_same_v<Frog, CastableCommonBase<Frog, Frog>>);
|
|
static_assert(std::is_same_v<Bear, CastableCommonBase<Bear, Bear>>);
|
|
static_assert(std::is_same_v<Lizard, CastableCommonBase<Lizard, Lizard>>);
|
|
static_assert(std::is_same_v<Gecko, CastableCommonBase<Gecko, Gecko>>);
|
|
static_assert(std::is_same_v<Iguana, CastableCommonBase<Iguana, Iguana>>);
|
|
|
|
static_assert(
|
|
std::is_same_v<CastableBase, CastableCommonBase<CastableBase, Animal>>);
|
|
static_assert(
|
|
std::is_same_v<CastableBase, CastableCommonBase<Animal, CastableBase>>);
|
|
static_assert(std::is_same_v<Amphibian, CastableCommonBase<Amphibian, Frog>>);
|
|
static_assert(std::is_same_v<Amphibian, CastableCommonBase<Frog, Amphibian>>);
|
|
static_assert(std::is_same_v<Animal, CastableCommonBase<Reptile, Frog>>);
|
|
static_assert(std::is_same_v<Animal, CastableCommonBase<Frog, Reptile>>);
|
|
static_assert(std::is_same_v<Animal, CastableCommonBase<Bear, Frog>>);
|
|
static_assert(std::is_same_v<Animal, CastableCommonBase<Frog, Bear>>);
|
|
static_assert(std::is_same_v<Lizard, CastableCommonBase<Gecko, Iguana>>);
|
|
|
|
static_assert(std::is_same_v<Animal, CastableCommonBase<Bear, Frog, Iguana>>);
|
|
static_assert(
|
|
std::is_same_v<Lizard, CastableCommonBase<Lizard, Gecko, Iguana>>);
|
|
static_assert(
|
|
std::is_same_v<Lizard, CastableCommonBase<Gecko, Iguana, Lizard>>);
|
|
static_assert(
|
|
std::is_same_v<Lizard, CastableCommonBase<Gecko, Lizard, Iguana>>);
|
|
static_assert(std::is_same_v<Animal, CastableCommonBase<Frog, Gecko, Iguana>>);
|
|
static_assert(std::is_same_v<Animal, CastableCommonBase<Gecko, Iguana, Frog>>);
|
|
static_assert(std::is_same_v<Animal, CastableCommonBase<Gecko, Frog, Iguana>>);
|
|
|
|
static_assert(
|
|
std::is_same_v<CastableBase,
|
|
CastableCommonBase<Bear, Frog, Iguana, CastableBase>>);
|
|
|
|
} // namespace
|
|
|
|
TINT_INSTANTIATE_TYPEINFO(Animal);
|
|
TINT_INSTANTIATE_TYPEINFO(Amphibian);
|
|
TINT_INSTANTIATE_TYPEINFO(Mammal);
|
|
TINT_INSTANTIATE_TYPEINFO(Reptile);
|
|
TINT_INSTANTIATE_TYPEINFO(Frog);
|
|
TINT_INSTANTIATE_TYPEINFO(Bear);
|
|
TINT_INSTANTIATE_TYPEINFO(Lizard);
|
|
TINT_INSTANTIATE_TYPEINFO(Gecko);
|
|
|
|
} // namespace tint
|