src/tint/lang/wgsl/helpers/append_vector_test.cc - dawn - Git at Google

 // Copyright 2021 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/lang/wgsl/helpers/append_vector.h"
 #include "src/tint/lang/wgsl/ast/helper_test.h"
 #include "src/tint/lang/wgsl/program/program_builder.h"
 #include "src/tint/lang/wgsl/resolver/resolver.h"
 #include "src/tint/lang/wgsl/sem/value_constructor.h"

 #include "gmock/gmock.h"

 namespace tint::writer {
 namespace {

 using namespace tint::core::fluent_types;     // NOLINT
 using namespace tint::core::number_suffixes;  // NOLINT

 class AppendVectorTest : public ::testing::Test, public ProgramBuilder {};

 // AppendVector(vec2<i32>(1, 2), 3) -> vec3<i32>(1, 2, 3)
 TEST_F(AppendVectorTest, Vec2i32_i32) {
     auto* scalar_1 = Expr(1_i);
     auto* scalar_2 = Expr(2_i);
     auto* scalar_3 = Expr(3_i);
     auto* vec_12 = Call<vec2<i32>>(scalar_1, scalar_2);
     WrapInFunction(vec_12, scalar_3);

     resolver::Resolver resolver(this);
     EXPECT_TRUE(resolver.Resolve());
     ASSERT_THAT(resolver.Diagnostics(), testing::IsEmpty());

     auto* append = AppendVector(this, vec_12, scalar_3);

     auto* vec_123 = As<ast::CallExpression>(append->Declaration());
     ASSERT_NE(vec_123, nullptr);
     ASSERT_EQ(vec_123->args.Length(), 3u);
     EXPECT_EQ(vec_123->args[0], scalar_1);
     EXPECT_EQ(vec_123->args[1], scalar_2);
     EXPECT_EQ(vec_123->args[2], scalar_3);

     auto* call = Sem().Get<sem::Call>(vec_123);
     ASSERT_NE(call, nullptr);
     ASSERT_EQ(call->Arguments().Length(), 3u);
     EXPECT_EQ(call->Arguments()[0], Sem().Get(scalar_1));
     EXPECT_EQ(call->Arguments()[1], Sem().Get(scalar_2));
     EXPECT_EQ(call->Arguments()[2], Sem().Get(scalar_3));

     auto* ctor = call->Target()->As<sem::ValueConstructor>();
     ASSERT_NE(ctor, nullptr);
     ASSERT_TRUE(ctor->ReturnType()->Is<core::type::Vector>());
     EXPECT_EQ(ctor->ReturnType()->As<core::type::Vector>()->Width(), 3u);
     EXPECT_TRUE(ctor->ReturnType()->As<core::type::Vector>()->type()->Is<core::type::I32>());
     EXPECT_EQ(ctor->ReturnType(), call->Type());

     ASSERT_EQ(ctor->Parameters().Length(), 3u);
     EXPECT_TRUE(ctor->Parameters()[0]->Type()->Is<core::type::I32>());
     EXPECT_TRUE(ctor->Parameters()[1]->Type()->Is<core::type::I32>());
     EXPECT_TRUE(ctor->Parameters()[2]->Type()->Is<core::type::I32>());
 }

 // AppendVector(vec2<i32>(1, 2), 3u) -> vec3<i32>(1, 2, i32(3u))
 TEST_F(AppendVectorTest, Vec2i32_u32) {
     auto* scalar_1 = Expr(1_i);
     auto* scalar_2 = Expr(2_i);
     auto* scalar_3 = Expr(3_u);
     auto* vec_12 = Call<vec2<i32>>(scalar_1, scalar_2);
     WrapInFunction(vec_12, scalar_3);

     resolver::Resolver resolver(this);
     EXPECT_TRUE(resolver.Resolve());
     ASSERT_THAT(resolver.Diagnostics(), testing::IsEmpty());

     auto* append = AppendVector(this, vec_12, scalar_3);

     auto* vec_123 = As<ast::CallExpression>(append->Declaration());
     ASSERT_NE(vec_123, nullptr);
     ASSERT_EQ(vec_123->args.Length(), 3u);
     EXPECT_EQ(vec_123->args[0], scalar_1);
     EXPECT_EQ(vec_123->args[1], scalar_2);
     auto* u32_to_i32 = vec_123->args[2]->As<ast::CallExpression>();
     ASSERT_NE(u32_to_i32, nullptr);
     ast::CheckIdentifier(u32_to_i32->target, "i32");

     ASSERT_EQ(u32_to_i32->args.Length(), 1u);
     EXPECT_EQ(u32_to_i32->args[0], scalar_3);

     auto* call = Sem().Get<sem::Call>(vec_123);
     ASSERT_NE(call, nullptr);
     ASSERT_EQ(call->Arguments().Length(), 3u);
     EXPECT_EQ(call->Arguments()[0], Sem().Get(scalar_1));
     EXPECT_EQ(call->Arguments()[1], Sem().Get(scalar_2));
     EXPECT_EQ(call->Arguments()[2], Sem().Get(u32_to_i32));

     auto* ctor = call->Target()->As<sem::ValueConstructor>();
     ASSERT_NE(ctor, nullptr);
     ASSERT_TRUE(ctor->ReturnType()->Is<core::type::Vector>());
     EXPECT_EQ(ctor->ReturnType()->As<core::type::Vector>()->Width(), 3u);
     EXPECT_TRUE(ctor->ReturnType()->As<core::type::Vector>()->type()->Is<core::type::I32>());
     EXPECT_EQ(ctor->ReturnType(), call->Type());

     ASSERT_EQ(ctor->Parameters().Length(), 3u);
     EXPECT_TRUE(ctor->Parameters()[0]->Type()->Is<core::type::I32>());
     EXPECT_TRUE(ctor->Parameters()[1]->Type()->Is<core::type::I32>());
     EXPECT_TRUE(ctor->Parameters()[2]->Type()->Is<core::type::I32>());
 }

 // AppendVector(vec2<i32>(vec2<u32>(1u, 2u)), 3u) ->
 //    vec3<i32>(vec2<i32>(vec2<u32>(1u, 2u)), i32(3u))
 TEST_F(AppendVectorTest, Vec2i32FromVec2u32_u32) {
     auto* scalar_1 = Expr(1_u);
     auto* scalar_2 = Expr(2_u);
     auto* scalar_3 = Expr(3_u);
     auto* uvec_12 = Call<vec2<u32>>(scalar_1, scalar_2);
     auto* vec_12 = Call<vec2<i32>>(uvec_12);
     WrapInFunction(vec_12, scalar_3);

     resolver::Resolver resolver(this);
     EXPECT_TRUE(resolver.Resolve());
     ASSERT_THAT(resolver.Diagnostics(), testing::IsEmpty());

     auto* append = AppendVector(this, vec_12, scalar_3);

     auto* vec_123 = As<ast::CallExpression>(append->Declaration());
     ASSERT_NE(vec_123, nullptr);
     ASSERT_EQ(vec_123->args.Length(), 2u);
     auto* v2u32_to_v2i32 = vec_123->args[0]->As<ast::CallExpression>();
     ASSERT_NE(v2u32_to_v2i32, nullptr);

     ast::CheckIdentifier(v2u32_to_v2i32->target, ast::Template("vec2", "i32"));
     EXPECT_EQ(v2u32_to_v2i32->args.Length(), 1u);
     EXPECT_EQ(v2u32_to_v2i32->args[0], uvec_12);

     auto* u32_to_i32 = vec_123->args[1]->As<ast::CallExpression>();
     ASSERT_NE(u32_to_i32, nullptr);
     ast::CheckIdentifier(u32_to_i32->target, "i32");
     ASSERT_EQ(u32_to_i32->args.Length(), 1u);
     EXPECT_EQ(u32_to_i32->args[0], scalar_3);

     auto* call = Sem().Get<sem::Call>(vec_123);
     ASSERT_NE(call, nullptr);
     ASSERT_EQ(call->Arguments().Length(), 2u);
     EXPECT_EQ(call->Arguments()[0], Sem().Get(vec_12));
     EXPECT_EQ(call->Arguments()[1], Sem().Get(u32_to_i32));

     auto* ctor = call->Target()->As<sem::ValueConstructor>();
     ASSERT_NE(ctor, nullptr);

     ASSERT_TRUE(ctor->ReturnType()->Is<core::type::Vector>());
     EXPECT_EQ(ctor->ReturnType()->As<core::type::Vector>()->Width(), 3u);
     EXPECT_TRUE(ctor->ReturnType()->As<core::type::Vector>()->type()->Is<core::type::I32>());
     EXPECT_EQ(ctor->ReturnType(), call->Type());

     ASSERT_EQ(ctor->Parameters().Length(), 2u);
     EXPECT_TRUE(ctor->Parameters()[0]->Type()->Is<core::type::Vector>());
     EXPECT_TRUE(ctor->Parameters()[1]->Type()->Is<core::type::I32>());
 }

 // AppendVector(vec2<i32>(1, 2), 3.0f) -> vec3<i32>(1, 2, i32(3.0f))
 TEST_F(AppendVectorTest, Vec2i32_f32) {
     auto* scalar_1 = Expr(1_i);
     auto* scalar_2 = Expr(2_i);
     auto* scalar_3 = Expr(3_f);
     auto* vec_12 = Call<vec2<i32>>(scalar_1, scalar_2);
     WrapInFunction(vec_12, scalar_3);

     resolver::Resolver resolver(this);
     EXPECT_TRUE(resolver.Resolve());
     ASSERT_THAT(resolver.Diagnostics(), testing::IsEmpty());

     auto* append = AppendVector(this, vec_12, scalar_3);

     auto* vec_123 = As<ast::CallExpression>(append->Declaration());
     ASSERT_NE(vec_123, nullptr);
     ASSERT_EQ(vec_123->args.Length(), 3u);
     EXPECT_EQ(vec_123->args[0], scalar_1);
     EXPECT_EQ(vec_123->args[1], scalar_2);
     auto* f32_to_i32 = vec_123->args[2]->As<ast::CallExpression>();
     ASSERT_NE(f32_to_i32, nullptr);
     ast::CheckIdentifier(f32_to_i32->target, "i32");
     ASSERT_EQ(f32_to_i32->args.Length(), 1u);
     EXPECT_EQ(f32_to_i32->args[0], scalar_3);

     auto* call = Sem().Get<sem::Call>(vec_123);
     ASSERT_NE(call, nullptr);
     ASSERT_EQ(call->Arguments().Length(), 3u);
     EXPECT_EQ(call->Arguments()[0], Sem().Get(scalar_1));
     EXPECT_EQ(call->Arguments()[1], Sem().Get(scalar_2));
     EXPECT_EQ(call->Arguments()[2], Sem().Get(f32_to_i32));

     auto* ctor = call->Target()->As<sem::ValueConstructor>();
     ASSERT_NE(ctor, nullptr);
     ASSERT_TRUE(ctor->ReturnType()->Is<core::type::Vector>());
     EXPECT_EQ(ctor->ReturnType()->As<core::type::Vector>()->Width(), 3u);
     EXPECT_TRUE(ctor->ReturnType()->As<core::type::Vector>()->type()->Is<core::type::I32>());
     EXPECT_EQ(ctor->ReturnType(), call->Type());

     ASSERT_EQ(ctor->Parameters().Length(), 3u);
     EXPECT_TRUE(ctor->Parameters()[0]->Type()->Is<core::type::I32>());
     EXPECT_TRUE(ctor->Parameters()[1]->Type()->Is<core::type::I32>());
     EXPECT_TRUE(ctor->Parameters()[2]->Type()->Is<core::type::I32>());
 }

 // AppendVector(vec3<i32>(1, 2, 3), 4) -> vec4<i32>(1, 2, 3, 4)
 TEST_F(AppendVectorTest, Vec3i32_i32) {
     auto* scalar_1 = Expr(1_i);
     auto* scalar_2 = Expr(2_i);
     auto* scalar_3 = Expr(3_i);
     auto* scalar_4 = Expr(4_i);
     auto* vec_123 = Call<vec3<i32>>(scalar_1, scalar_2, scalar_3);
     WrapInFunction(vec_123, scalar_4);

     resolver::Resolver resolver(this);
     EXPECT_TRUE(resolver.Resolve());
     ASSERT_THAT(resolver.Diagnostics(), testing::IsEmpty());

     auto* append = AppendVector(this, vec_123, scalar_4);

     auto* vec_1234 = As<ast::CallExpression>(append->Declaration());
     ASSERT_NE(vec_1234, nullptr);
     ASSERT_EQ(vec_1234->args.Length(), 4u);
     EXPECT_EQ(vec_1234->args[0], scalar_1);
     EXPECT_EQ(vec_1234->args[1], scalar_2);
     EXPECT_EQ(vec_1234->args[2], scalar_3);
     EXPECT_EQ(vec_1234->args[3], scalar_4);

     auto* call = Sem().Get<sem::Call>(vec_1234);
     ASSERT_NE(call, nullptr);
     ASSERT_EQ(call->Arguments().Length(), 4u);
     EXPECT_EQ(call->Arguments()[0], Sem().Get(scalar_1));
     EXPECT_EQ(call->Arguments()[1], Sem().Get(scalar_2));
     EXPECT_EQ(call->Arguments()[2], Sem().Get(scalar_3));
     EXPECT_EQ(call->Arguments()[3], Sem().Get(scalar_4));

     auto* ctor = call->Target()->As<sem::ValueConstructor>();
     ASSERT_NE(ctor, nullptr);
     ASSERT_TRUE(ctor->ReturnType()->Is<core::type::Vector>());
     EXPECT_EQ(ctor->ReturnType()->As<core::type::Vector>()->Width(), 4u);
     EXPECT_TRUE(ctor->ReturnType()->As<core::type::Vector>()->type()->Is<core::type::I32>());
     EXPECT_EQ(ctor->ReturnType(), call->Type());

     ASSERT_EQ(ctor->Parameters().Length(), 4u);
     EXPECT_TRUE(ctor->Parameters()[0]->Type()->Is<core::type::I32>());
     EXPECT_TRUE(ctor->Parameters()[1]->Type()->Is<core::type::I32>());
     EXPECT_TRUE(ctor->Parameters()[2]->Type()->Is<core::type::I32>());
     EXPECT_TRUE(ctor->Parameters()[3]->Type()->Is<core::type::I32>());
 }

 // AppendVector(vec_12, 3) -> vec3<i32>(vec_12, 3)
 TEST_F(AppendVectorTest, Vec2i32Var_i32) {
     GlobalVar("vec_12", ty.vec2<i32>(), core::AddressSpace::kPrivate);
     auto* vec_12 = Expr("vec_12");
     auto* scalar_3 = Expr(3_i);
     WrapInFunction(vec_12, scalar_3);

     resolver::Resolver resolver(this);
     EXPECT_TRUE(resolver.Resolve());
     ASSERT_THAT(resolver.Diagnostics(), testing::IsEmpty());

     auto* append = AppendVector(this, vec_12, scalar_3);

     auto* vec_123 = As<ast::CallExpression>(append->Declaration());
     ASSERT_NE(vec_123, nullptr);
     ASSERT_EQ(vec_123->args.Length(), 2u);
     EXPECT_EQ(vec_123->args[0], vec_12);
     EXPECT_EQ(vec_123->args[1], scalar_3);

     auto* call = Sem().Get<sem::Call>(vec_123);
     ASSERT_NE(call, nullptr);
     ASSERT_EQ(call->Arguments().Length(), 2u);
     EXPECT_EQ(call->Arguments()[0], Sem().Get(vec_12));
     EXPECT_EQ(call->Arguments()[1], Sem().Get(scalar_3));

     auto* ctor = call->Target()->As<sem::ValueConstructor>();
     ASSERT_NE(ctor, nullptr);
     ASSERT_TRUE(ctor->ReturnType()->Is<core::type::Vector>());
     EXPECT_EQ(ctor->ReturnType()->As<core::type::Vector>()->Width(), 3u);
     EXPECT_TRUE(ctor->ReturnType()->As<core::type::Vector>()->type()->Is<core::type::I32>());
     EXPECT_EQ(ctor->ReturnType(), call->Type());

     ASSERT_EQ(ctor->Parameters().Length(), 2u);
     EXPECT_TRUE(ctor->Parameters()[0]->Type()->Is<core::type::Vector>());
     EXPECT_TRUE(ctor->Parameters()[1]->Type()->Is<core::type::I32>());
 }

 // AppendVector(1, 2, scalar_3) -> vec3<i32>(1, 2, scalar_3)
 TEST_F(AppendVectorTest, Vec2i32_i32Var) {
     GlobalVar("scalar_3", ty.i32(), core::AddressSpace::kPrivate);
     auto* scalar_1 = Expr(1_i);
     auto* scalar_2 = Expr(2_i);
     auto* scalar_3 = Expr("scalar_3");
     auto* vec_12 = Call<vec2<i32>>(scalar_1, scalar_2);
     WrapInFunction(vec_12, scalar_3);

     resolver::Resolver resolver(this);
     EXPECT_TRUE(resolver.Resolve());
     ASSERT_THAT(resolver.Diagnostics(), testing::IsEmpty());

     auto* append = AppendVector(this, vec_12, scalar_3);

     auto* vec_123 = As<ast::CallExpression>(append->Declaration());
     ASSERT_NE(vec_123, nullptr);
     ASSERT_EQ(vec_123->args.Length(), 3u);
     EXPECT_EQ(vec_123->args[0], scalar_1);
     EXPECT_EQ(vec_123->args[1], scalar_2);
     EXPECT_EQ(vec_123->args[2], scalar_3);

     auto* call = Sem().Get<sem::Call>(vec_123);
     ASSERT_NE(call, nullptr);
     ASSERT_EQ(call->Arguments().Length(), 3u);
     EXPECT_EQ(call->Arguments()[0], Sem().Get(scalar_1));
     EXPECT_EQ(call->Arguments()[1], Sem().Get(scalar_2));
     EXPECT_EQ(call->Arguments()[2], Sem().Get(scalar_3));

     auto* ctor = call->Target()->As<sem::ValueConstructor>();
     ASSERT_NE(ctor, nullptr);
     ASSERT_TRUE(ctor->ReturnType()->Is<core::type::Vector>());
     EXPECT_EQ(ctor->ReturnType()->As<core::type::Vector>()->Width(), 3u);
     EXPECT_TRUE(ctor->ReturnType()->As<core::type::Vector>()->type()->Is<core::type::I32>());
     EXPECT_EQ(ctor->ReturnType(), call->Type());

     ASSERT_EQ(ctor->Parameters().Length(), 3u);
     EXPECT_TRUE(ctor->Parameters()[0]->Type()->Is<core::type::I32>());
     EXPECT_TRUE(ctor->Parameters()[1]->Type()->Is<core::type::I32>());
     EXPECT_TRUE(ctor->Parameters()[2]->Type()->Is<core::type::I32>());
 }

 // AppendVector(vec_12, scalar_3) -> vec3<i32>(vec_12, scalar_3)
 TEST_F(AppendVectorTest, Vec2i32Var_i32Var) {
     GlobalVar("vec_12", ty.vec2<i32>(), core::AddressSpace::kPrivate);
     GlobalVar("scalar_3", ty.i32(), core::AddressSpace::kPrivate);
     auto* vec_12 = Expr("vec_12");
     auto* scalar_3 = Expr("scalar_3");
     WrapInFunction(vec_12, scalar_3);

     resolver::Resolver resolver(this);
     EXPECT_TRUE(resolver.Resolve());
     ASSERT_THAT(resolver.Diagnostics(), testing::IsEmpty());

     auto* append = AppendVector(this, vec_12, scalar_3);

     auto* vec_123 = As<ast::CallExpression>(append->Declaration());
     ASSERT_NE(vec_123, nullptr);
     ASSERT_EQ(vec_123->args.Length(), 2u);
     EXPECT_EQ(vec_123->args[0], vec_12);
     EXPECT_EQ(vec_123->args[1], scalar_3);

     auto* call = Sem().Get<sem::Call>(vec_123);
     ASSERT_NE(call, nullptr);
     ASSERT_EQ(call->Arguments().Length(), 2u);
     EXPECT_EQ(call->Arguments()[0], Sem().Get(vec_12));
     EXPECT_EQ(call->Arguments()[1], Sem().Get(scalar_3));

     auto* ctor = call->Target()->As<sem::ValueConstructor>();
     ASSERT_NE(ctor, nullptr);
     ASSERT_TRUE(ctor->ReturnType()->Is<core::type::Vector>());
     EXPECT_EQ(ctor->ReturnType()->As<core::type::Vector>()->Width(), 3u);
     EXPECT_TRUE(ctor->ReturnType()->As<core::type::Vector>()->type()->Is<core::type::I32>());
     EXPECT_EQ(ctor->ReturnType(), call->Type());

     ASSERT_EQ(ctor->Parameters().Length(), 2u);
     EXPECT_TRUE(ctor->Parameters()[0]->Type()->Is<core::type::Vector>());
     EXPECT_TRUE(ctor->Parameters()[1]->Type()->Is<core::type::I32>());
 }

 // AppendVector(vec_12, scalar_3) -> vec3<i32>(vec_12, i32(scalar_3))
 TEST_F(AppendVectorTest, Vec2i32Var_f32Var) {
     GlobalVar("vec_12", ty.vec2<i32>(), core::AddressSpace::kPrivate);
     GlobalVar("scalar_3", ty.f32(), core::AddressSpace::kPrivate);
     auto* vec_12 = Expr("vec_12");
     auto* scalar_3 = Expr("scalar_3");
     WrapInFunction(vec_12, scalar_3);

     resolver::Resolver resolver(this);
     EXPECT_TRUE(resolver.Resolve());
     ASSERT_THAT(resolver.Diagnostics(), testing::IsEmpty());

     auto* append = AppendVector(this, vec_12, scalar_3);

     auto* vec_123 = As<ast::CallExpression>(append->Declaration());
     ASSERT_NE(vec_123, nullptr);
     ASSERT_EQ(vec_123->args.Length(), 2u);
     EXPECT_EQ(vec_123->args[0], vec_12);
     auto* f32_to_i32 = vec_123->args[1]->As<ast::CallExpression>();
     ASSERT_NE(f32_to_i32, nullptr);
     ast::CheckIdentifier(f32_to_i32->target, "i32");
     ASSERT_EQ(f32_to_i32->args.Length(), 1u);
     EXPECT_EQ(f32_to_i32->args[0], scalar_3);

     auto* call = Sem().Get<sem::Call>(vec_123);
     ASSERT_NE(call, nullptr);
     ASSERT_EQ(call->Arguments().Length(), 2u);
     EXPECT_EQ(call->Arguments()[0], Sem().Get(vec_12));
     EXPECT_EQ(call->Arguments()[1], Sem().Get(f32_to_i32));

     auto* ctor = call->Target()->As<sem::ValueConstructor>();
     ASSERT_NE(ctor, nullptr);
     ASSERT_TRUE(ctor->ReturnType()->Is<core::type::Vector>());
     EXPECT_EQ(ctor->ReturnType()->As<core::type::Vector>()->Width(), 3u);
     EXPECT_TRUE(ctor->ReturnType()->As<core::type::Vector>()->type()->Is<core::type::I32>());
     EXPECT_EQ(ctor->ReturnType(), call->Type());

     ASSERT_EQ(ctor->Parameters().Length(), 2u);
     EXPECT_TRUE(ctor->Parameters()[0]->Type()->Is<core::type::Vector>());
     EXPECT_TRUE(ctor->Parameters()[1]->Type()->Is<core::type::I32>());
 }

 // AppendVector(vec_12, scalar_3) -> vec3<bool>(vec_12, scalar_3)
 TEST_F(AppendVectorTest, Vec2boolVar_boolVar) {
     GlobalVar("vec_12", ty.vec2<bool>(), core::AddressSpace::kPrivate);
     GlobalVar("scalar_3", ty.bool_(), core::AddressSpace::kPrivate);
     auto* vec_12 = Expr("vec_12");
     auto* scalar_3 = Expr("scalar_3");
     WrapInFunction(vec_12, scalar_3);

     resolver::Resolver resolver(this);
     EXPECT_TRUE(resolver.Resolve());
     ASSERT_THAT(resolver.Diagnostics(), testing::IsEmpty());

     auto* append = AppendVector(this, vec_12, scalar_3);

     auto* vec_123 = As<ast::CallExpression>(append->Declaration());
     ASSERT_NE(vec_123, nullptr);
     ASSERT_EQ(vec_123->args.Length(), 2u);
     EXPECT_EQ(vec_123->args[0], vec_12);
     EXPECT_EQ(vec_123->args[1], scalar_3);

     auto* call = Sem().Get<sem::Call>(vec_123);
     ASSERT_NE(call, nullptr);
     ASSERT_EQ(call->Arguments().Length(), 2u);
     EXPECT_EQ(call->Arguments()[0], Sem().Get(vec_12));
     EXPECT_EQ(call->Arguments()[1], Sem().Get(scalar_3));

     auto* ctor = call->Target()->As<sem::ValueConstructor>();
     ASSERT_NE(ctor, nullptr);
     ASSERT_TRUE(ctor->ReturnType()->Is<core::type::Vector>());
     EXPECT_EQ(ctor->ReturnType()->As<core::type::Vector>()->Width(), 3u);
     EXPECT_TRUE(ctor->ReturnType()->As<core::type::Vector>()->type()->Is<core::type::Bool>());
     EXPECT_EQ(ctor->ReturnType(), call->Type());

     ASSERT_EQ(ctor->Parameters().Length(), 2u);
     EXPECT_TRUE(ctor->Parameters()[0]->Type()->Is<core::type::Vector>());
     EXPECT_TRUE(ctor->Parameters()[1]->Type()->Is<core::type::Bool>());
 }

 // AppendVector(vec3<i32>(), 4) -> vec3<bool>(0, 0, 0, 4)
 TEST_F(AppendVectorTest, ZeroVec3i32_i32) {
     auto* scalar = Expr(4_i);
     auto* vec000 = Call<vec3<i32>>();
     WrapInFunction(vec000, scalar);

     resolver::Resolver resolver(this);
     EXPECT_TRUE(resolver.Resolve());
     ASSERT_THAT(resolver.Diagnostics(), testing::IsEmpty());

     auto* append = AppendVector(this, vec000, scalar);

     auto* vec_0004 = As<ast::CallExpression>(append->Declaration());
     ASSERT_NE(vec_0004, nullptr);
     ASSERT_EQ(vec_0004->args.Length(), 4u);
     for (size_t i = 0; i < 3; i++) {
         auto* literal = As<ast::IntLiteralExpression>(vec_0004->args[i]);
         ASSERT_NE(literal, nullptr);
         EXPECT_EQ(literal->value, 0);
     }
     EXPECT_EQ(vec_0004->args[3], scalar);

     auto* call = Sem().Get<sem::Call>(vec_0004);
     ASSERT_NE(call, nullptr);
     ASSERT_EQ(call->Arguments().Length(), 4u);
     EXPECT_EQ(call->Arguments()[0], Sem().Get(vec_0004->args[0]));
     EXPECT_EQ(call->Arguments()[1], Sem().Get(vec_0004->args[1]));
     EXPECT_EQ(call->Arguments()[2], Sem().Get(vec_0004->args[2]));
     EXPECT_EQ(call->Arguments()[3], Sem().Get(scalar));

     auto* ctor = call->Target()->As<sem::ValueConstructor>();
     ASSERT_NE(ctor, nullptr);
     ASSERT_TRUE(ctor->ReturnType()->Is<core::type::Vector>());
     EXPECT_EQ(ctor->ReturnType()->As<core::type::Vector>()->Width(), 4u);
     EXPECT_TRUE(ctor->ReturnType()->As<core::type::Vector>()->type()->Is<core::type::I32>());
     EXPECT_EQ(ctor->ReturnType(), call->Type());

     ASSERT_EQ(ctor->Parameters().Length(), 4u);
     EXPECT_TRUE(ctor->Parameters()[0]->Type()->Is<core::type::I32>());
     EXPECT_TRUE(ctor->Parameters()[1]->Type()->Is<core::type::I32>());
     EXPECT_TRUE(ctor->Parameters()[2]->Type()->Is<core::type::I32>());
     EXPECT_TRUE(ctor->Parameters()[3]->Type()->Is<core::type::I32>());
 }

 }  // namespace
 }  // namespace tint::writer
	// Copyright 2021 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/lang/wgsl/helpers/append_vector.h"
	#include "src/tint/lang/wgsl/ast/helper_test.h"
	#include "src/tint/lang/wgsl/program/program_builder.h"
	#include "src/tint/lang/wgsl/resolver/resolver.h"
	#include "src/tint/lang/wgsl/sem/value_constructor.h"

	#include "gmock/gmock.h"

	namespace tint::writer {
	namespace {

	using namespace tint::core::fluent_types; // NOLINT
	using namespace tint::core::number_suffixes; // NOLINT

	class AppendVectorTest : public ::testing::Test, public ProgramBuilder {};

	// AppendVector(vec2<i32>(1, 2), 3) -> vec3<i32>(1, 2, 3)
	TEST_F(AppendVectorTest, Vec2i32_i32) {
	auto* scalar_1 = Expr(1_i);
	auto* scalar_2 = Expr(2_i);
	auto* scalar_3 = Expr(3_i);
	auto* vec_12 = Call<vec2<i32>>(scalar_1, scalar_2);
	WrapInFunction(vec_12, scalar_3);

	resolver::Resolver resolver(this);
	EXPECT_TRUE(resolver.Resolve());
	ASSERT_THAT(resolver.Diagnostics(), testing::IsEmpty());

	auto* append = AppendVector(this, vec_12, scalar_3);

	auto* vec_123 = As<ast::CallExpression>(append->Declaration());
	ASSERT_NE(vec_123, nullptr);
	ASSERT_EQ(vec_123->args.Length(), 3u);
	EXPECT_EQ(vec_123->args[0], scalar_1);
	EXPECT_EQ(vec_123->args[1], scalar_2);
	EXPECT_EQ(vec_123->args[2], scalar_3);

	auto* call = Sem().Get<sem::Call>(vec_123);
	ASSERT_NE(call, nullptr);
	ASSERT_EQ(call->Arguments().Length(), 3u);
	EXPECT_EQ(call->Arguments()[0], Sem().Get(scalar_1));
	EXPECT_EQ(call->Arguments()[1], Sem().Get(scalar_2));
	EXPECT_EQ(call->Arguments()[2], Sem().Get(scalar_3));

	auto* ctor = call->Target()->As<sem::ValueConstructor>();
	ASSERT_NE(ctor, nullptr);
	ASSERT_TRUE(ctor->ReturnType()->Is<core::type::Vector>());
	EXPECT_EQ(ctor->ReturnType()->As<core::type::Vector>()->Width(), 3u);
	EXPECT_TRUE(ctor->ReturnType()->As<core::type::Vector>()->type()->Is<core::type::I32>());
	EXPECT_EQ(ctor->ReturnType(), call->Type());

	ASSERT_EQ(ctor->Parameters().Length(), 3u);
	EXPECT_TRUE(ctor->Parameters()[0]->Type()->Is<core::type::I32>());
	EXPECT_TRUE(ctor->Parameters()[1]->Type()->Is<core::type::I32>());
	EXPECT_TRUE(ctor->Parameters()[2]->Type()->Is<core::type::I32>());
	}

	// AppendVector(vec2<i32>(1, 2), 3u) -> vec3<i32>(1, 2, i32(3u))
	TEST_F(AppendVectorTest, Vec2i32_u32) {
	auto* scalar_1 = Expr(1_i);
	auto* scalar_2 = Expr(2_i);
	auto* scalar_3 = Expr(3_u);
	auto* vec_12 = Call<vec2<i32>>(scalar_1, scalar_2);
	WrapInFunction(vec_12, scalar_3);

	resolver::Resolver resolver(this);
	EXPECT_TRUE(resolver.Resolve());
	ASSERT_THAT(resolver.Diagnostics(), testing::IsEmpty());

	auto* append = AppendVector(this, vec_12, scalar_3);

	auto* vec_123 = As<ast::CallExpression>(append->Declaration());
	ASSERT_NE(vec_123, nullptr);
	ASSERT_EQ(vec_123->args.Length(), 3u);
	EXPECT_EQ(vec_123->args[0], scalar_1);
	EXPECT_EQ(vec_123->args[1], scalar_2);
	auto* u32_to_i32 = vec_123->args[2]->As<ast::CallExpression>();
	ASSERT_NE(u32_to_i32, nullptr);
	ast::CheckIdentifier(u32_to_i32->target, "i32");

	ASSERT_EQ(u32_to_i32->args.Length(), 1u);
	EXPECT_EQ(u32_to_i32->args[0], scalar_3);

	auto* call = Sem().Get<sem::Call>(vec_123);
	ASSERT_NE(call, nullptr);
	ASSERT_EQ(call->Arguments().Length(), 3u);
	EXPECT_EQ(call->Arguments()[0], Sem().Get(scalar_1));
	EXPECT_EQ(call->Arguments()[1], Sem().Get(scalar_2));
	EXPECT_EQ(call->Arguments()[2], Sem().Get(u32_to_i32));

	auto* ctor = call->Target()->As<sem::ValueConstructor>();
	ASSERT_NE(ctor, nullptr);
	ASSERT_TRUE(ctor->ReturnType()->Is<core::type::Vector>());
	EXPECT_EQ(ctor->ReturnType()->As<core::type::Vector>()->Width(), 3u);
	EXPECT_TRUE(ctor->ReturnType()->As<core::type::Vector>()->type()->Is<core::type::I32>());
	EXPECT_EQ(ctor->ReturnType(), call->Type());

	ASSERT_EQ(ctor->Parameters().Length(), 3u);
	EXPECT_TRUE(ctor->Parameters()[0]->Type()->Is<core::type::I32>());
	EXPECT_TRUE(ctor->Parameters()[1]->Type()->Is<core::type::I32>());
	EXPECT_TRUE(ctor->Parameters()[2]->Type()->Is<core::type::I32>());
	}

	// AppendVector(vec2<i32>(vec2<u32>(1u, 2u)), 3u) ->
	// vec3<i32>(vec2<i32>(vec2<u32>(1u, 2u)), i32(3u))
	TEST_F(AppendVectorTest, Vec2i32FromVec2u32_u32) {
	auto* scalar_1 = Expr(1_u);
	auto* scalar_2 = Expr(2_u);
	auto* scalar_3 = Expr(3_u);
	auto* uvec_12 = Call<vec2<u32>>(scalar_1, scalar_2);
	auto* vec_12 = Call<vec2<i32>>(uvec_12);
	WrapInFunction(vec_12, scalar_3);

	resolver::Resolver resolver(this);
	EXPECT_TRUE(resolver.Resolve());
	ASSERT_THAT(resolver.Diagnostics(), testing::IsEmpty());

	auto* append = AppendVector(this, vec_12, scalar_3);

	auto* vec_123 = As<ast::CallExpression>(append->Declaration());
	ASSERT_NE(vec_123, nullptr);
	ASSERT_EQ(vec_123->args.Length(), 2u);
	auto* v2u32_to_v2i32 = vec_123->args[0]->As<ast::CallExpression>();
	ASSERT_NE(v2u32_to_v2i32, nullptr);

	ast::CheckIdentifier(v2u32_to_v2i32->target, ast::Template("vec2", "i32"));
	EXPECT_EQ(v2u32_to_v2i32->args.Length(), 1u);
	EXPECT_EQ(v2u32_to_v2i32->args[0], uvec_12);

	auto* u32_to_i32 = vec_123->args[1]->As<ast::CallExpression>();
	ASSERT_NE(u32_to_i32, nullptr);
	ast::CheckIdentifier(u32_to_i32->target, "i32");
	ASSERT_EQ(u32_to_i32->args.Length(), 1u);
	EXPECT_EQ(u32_to_i32->args[0], scalar_3);

	auto* call = Sem().Get<sem::Call>(vec_123);
	ASSERT_NE(call, nullptr);
	ASSERT_EQ(call->Arguments().Length(), 2u);
	EXPECT_EQ(call->Arguments()[0], Sem().Get(vec_12));
	EXPECT_EQ(call->Arguments()[1], Sem().Get(u32_to_i32));

	auto* ctor = call->Target()->As<sem::ValueConstructor>();
	ASSERT_NE(ctor, nullptr);

	ASSERT_TRUE(ctor->ReturnType()->Is<core::type::Vector>());
	EXPECT_EQ(ctor->ReturnType()->As<core::type::Vector>()->Width(), 3u);
	EXPECT_TRUE(ctor->ReturnType()->As<core::type::Vector>()->type()->Is<core::type::I32>());
	EXPECT_EQ(ctor->ReturnType(), call->Type());

	ASSERT_EQ(ctor->Parameters().Length(), 2u);
	EXPECT_TRUE(ctor->Parameters()[0]->Type()->Is<core::type::Vector>());
	EXPECT_TRUE(ctor->Parameters()[1]->Type()->Is<core::type::I32>());
	}

	// AppendVector(vec2<i32>(1, 2), 3.0f) -> vec3<i32>(1, 2, i32(3.0f))
	TEST_F(AppendVectorTest, Vec2i32_f32) {
	auto* scalar_1 = Expr(1_i);
	auto* scalar_2 = Expr(2_i);
	auto* scalar_3 = Expr(3_f);
	auto* vec_12 = Call<vec2<i32>>(scalar_1, scalar_2);
	WrapInFunction(vec_12, scalar_3);

	resolver::Resolver resolver(this);
	EXPECT_TRUE(resolver.Resolve());
	ASSERT_THAT(resolver.Diagnostics(), testing::IsEmpty());

	auto* append = AppendVector(this, vec_12, scalar_3);

	auto* vec_123 = As<ast::CallExpression>(append->Declaration());
	ASSERT_NE(vec_123, nullptr);
	ASSERT_EQ(vec_123->args.Length(), 3u);
	EXPECT_EQ(vec_123->args[0], scalar_1);
	EXPECT_EQ(vec_123->args[1], scalar_2);
	auto* f32_to_i32 = vec_123->args[2]->As<ast::CallExpression>();
	ASSERT_NE(f32_to_i32, nullptr);
	ast::CheckIdentifier(f32_to_i32->target, "i32");
	ASSERT_EQ(f32_to_i32->args.Length(), 1u);
	EXPECT_EQ(f32_to_i32->args[0], scalar_3);

	auto* call = Sem().Get<sem::Call>(vec_123);
	ASSERT_NE(call, nullptr);
	ASSERT_EQ(call->Arguments().Length(), 3u);
	EXPECT_EQ(call->Arguments()[0], Sem().Get(scalar_1));
	EXPECT_EQ(call->Arguments()[1], Sem().Get(scalar_2));
	EXPECT_EQ(call->Arguments()[2], Sem().Get(f32_to_i32));

	auto* ctor = call->Target()->As<sem::ValueConstructor>();
	ASSERT_NE(ctor, nullptr);
	ASSERT_TRUE(ctor->ReturnType()->Is<core::type::Vector>());
	EXPECT_EQ(ctor->ReturnType()->As<core::type::Vector>()->Width(), 3u);
	EXPECT_TRUE(ctor->ReturnType()->As<core::type::Vector>()->type()->Is<core::type::I32>());
	EXPECT_EQ(ctor->ReturnType(), call->Type());

	ASSERT_EQ(ctor->Parameters().Length(), 3u);
	EXPECT_TRUE(ctor->Parameters()[0]->Type()->Is<core::type::I32>());
	EXPECT_TRUE(ctor->Parameters()[1]->Type()->Is<core::type::I32>());
	EXPECT_TRUE(ctor->Parameters()[2]->Type()->Is<core::type::I32>());
	}

	// AppendVector(vec3<i32>(1, 2, 3), 4) -> vec4<i32>(1, 2, 3, 4)
	TEST_F(AppendVectorTest, Vec3i32_i32) {
	auto* scalar_1 = Expr(1_i);
	auto* scalar_2 = Expr(2_i);
	auto* scalar_3 = Expr(3_i);
	auto* scalar_4 = Expr(4_i);
	auto* vec_123 = Call<vec3<i32>>(scalar_1, scalar_2, scalar_3);
	WrapInFunction(vec_123, scalar_4);

	resolver::Resolver resolver(this);
	EXPECT_TRUE(resolver.Resolve());
	ASSERT_THAT(resolver.Diagnostics(), testing::IsEmpty());

	auto* append = AppendVector(this, vec_123, scalar_4);

	auto* vec_1234 = As<ast::CallExpression>(append->Declaration());
	ASSERT_NE(vec_1234, nullptr);
	ASSERT_EQ(vec_1234->args.Length(), 4u);
	EXPECT_EQ(vec_1234->args[0], scalar_1);
	EXPECT_EQ(vec_1234->args[1], scalar_2);
	EXPECT_EQ(vec_1234->args[2], scalar_3);
	EXPECT_EQ(vec_1234->args[3], scalar_4);

	auto* call = Sem().Get<sem::Call>(vec_1234);
	ASSERT_NE(call, nullptr);
	ASSERT_EQ(call->Arguments().Length(), 4u);
	EXPECT_EQ(call->Arguments()[0], Sem().Get(scalar_1));
	EXPECT_EQ(call->Arguments()[1], Sem().Get(scalar_2));
	EXPECT_EQ(call->Arguments()[2], Sem().Get(scalar_3));
	EXPECT_EQ(call->Arguments()[3], Sem().Get(scalar_4));

	auto* ctor = call->Target()->As<sem::ValueConstructor>();
	ASSERT_NE(ctor, nullptr);
	ASSERT_TRUE(ctor->ReturnType()->Is<core::type::Vector>());
	EXPECT_EQ(ctor->ReturnType()->As<core::type::Vector>()->Width(), 4u);
	EXPECT_TRUE(ctor->ReturnType()->As<core::type::Vector>()->type()->Is<core::type::I32>());
	EXPECT_EQ(ctor->ReturnType(), call->Type());

	ASSERT_EQ(ctor->Parameters().Length(), 4u);
	EXPECT_TRUE(ctor->Parameters()[0]->Type()->Is<core::type::I32>());
	EXPECT_TRUE(ctor->Parameters()[1]->Type()->Is<core::type::I32>());
	EXPECT_TRUE(ctor->Parameters()[2]->Type()->Is<core::type::I32>());
	EXPECT_TRUE(ctor->Parameters()[3]->Type()->Is<core::type::I32>());
	}

	// AppendVector(vec_12, 3) -> vec3<i32>(vec_12, 3)
	TEST_F(AppendVectorTest, Vec2i32Var_i32) {
	GlobalVar("vec_12", ty.vec2<i32>(), core::AddressSpace::kPrivate);
	auto* vec_12 = Expr("vec_12");
	auto* scalar_3 = Expr(3_i);
	WrapInFunction(vec_12, scalar_3);

	resolver::Resolver resolver(this);
	EXPECT_TRUE(resolver.Resolve());
	ASSERT_THAT(resolver.Diagnostics(), testing::IsEmpty());

	auto* append = AppendVector(this, vec_12, scalar_3);

	auto* vec_123 = As<ast::CallExpression>(append->Declaration());
	ASSERT_NE(vec_123, nullptr);
	ASSERT_EQ(vec_123->args.Length(), 2u);
	EXPECT_EQ(vec_123->args[0], vec_12);
	EXPECT_EQ(vec_123->args[1], scalar_3);

	auto* call = Sem().Get<sem::Call>(vec_123);
	ASSERT_NE(call, nullptr);
	ASSERT_EQ(call->Arguments().Length(), 2u);
	EXPECT_EQ(call->Arguments()[0], Sem().Get(vec_12));
	EXPECT_EQ(call->Arguments()[1], Sem().Get(scalar_3));

	auto* ctor = call->Target()->As<sem::ValueConstructor>();
	ASSERT_NE(ctor, nullptr);
	ASSERT_TRUE(ctor->ReturnType()->Is<core::type::Vector>());
	EXPECT_EQ(ctor->ReturnType()->As<core::type::Vector>()->Width(), 3u);
	EXPECT_TRUE(ctor->ReturnType()->As<core::type::Vector>()->type()->Is<core::type::I32>());
	EXPECT_EQ(ctor->ReturnType(), call->Type());

	ASSERT_EQ(ctor->Parameters().Length(), 2u);
	EXPECT_TRUE(ctor->Parameters()[0]->Type()->Is<core::type::Vector>());
	EXPECT_TRUE(ctor->Parameters()[1]->Type()->Is<core::type::I32>());
	}

	// AppendVector(1, 2, scalar_3) -> vec3<i32>(1, 2, scalar_3)
	TEST_F(AppendVectorTest, Vec2i32_i32Var) {
	GlobalVar("scalar_3", ty.i32(), core::AddressSpace::kPrivate);
	auto* scalar_1 = Expr(1_i);
	auto* scalar_2 = Expr(2_i);
	auto* scalar_3 = Expr("scalar_3");
	auto* vec_12 = Call<vec2<i32>>(scalar_1, scalar_2);
	WrapInFunction(vec_12, scalar_3);

	resolver::Resolver resolver(this);
	EXPECT_TRUE(resolver.Resolve());
	ASSERT_THAT(resolver.Diagnostics(), testing::IsEmpty());

	auto* append = AppendVector(this, vec_12, scalar_3);

	auto* vec_123 = As<ast::CallExpression>(append->Declaration());
	ASSERT_NE(vec_123, nullptr);
	ASSERT_EQ(vec_123->args.Length(), 3u);
	EXPECT_EQ(vec_123->args[0], scalar_1);
	EXPECT_EQ(vec_123->args[1], scalar_2);
	EXPECT_EQ(vec_123->args[2], scalar_3);

	auto* call = Sem().Get<sem::Call>(vec_123);
	ASSERT_NE(call, nullptr);
	ASSERT_EQ(call->Arguments().Length(), 3u);
	EXPECT_EQ(call->Arguments()[0], Sem().Get(scalar_1));
	EXPECT_EQ(call->Arguments()[1], Sem().Get(scalar_2));
	EXPECT_EQ(call->Arguments()[2], Sem().Get(scalar_3));

	auto* ctor = call->Target()->As<sem::ValueConstructor>();
	ASSERT_NE(ctor, nullptr);
	ASSERT_TRUE(ctor->ReturnType()->Is<core::type::Vector>());
	EXPECT_EQ(ctor->ReturnType()->As<core::type::Vector>()->Width(), 3u);
	EXPECT_TRUE(ctor->ReturnType()->As<core::type::Vector>()->type()->Is<core::type::I32>());
	EXPECT_EQ(ctor->ReturnType(), call->Type());

	ASSERT_EQ(ctor->Parameters().Length(), 3u);
	EXPECT_TRUE(ctor->Parameters()[0]->Type()->Is<core::type::I32>());
	EXPECT_TRUE(ctor->Parameters()[1]->Type()->Is<core::type::I32>());
	EXPECT_TRUE(ctor->Parameters()[2]->Type()->Is<core::type::I32>());
	}

	// AppendVector(vec_12, scalar_3) -> vec3<i32>(vec_12, scalar_3)
	TEST_F(AppendVectorTest, Vec2i32Var_i32Var) {
	GlobalVar("vec_12", ty.vec2<i32>(), core::AddressSpace::kPrivate);
	GlobalVar("scalar_3", ty.i32(), core::AddressSpace::kPrivate);
	auto* vec_12 = Expr("vec_12");
	auto* scalar_3 = Expr("scalar_3");
	WrapInFunction(vec_12, scalar_3);

	resolver::Resolver resolver(this);
	EXPECT_TRUE(resolver.Resolve());
	ASSERT_THAT(resolver.Diagnostics(), testing::IsEmpty());

	auto* append = AppendVector(this, vec_12, scalar_3);

	auto* vec_123 = As<ast::CallExpression>(append->Declaration());
	ASSERT_NE(vec_123, nullptr);
	ASSERT_EQ(vec_123->args.Length(), 2u);
	EXPECT_EQ(vec_123->args[0], vec_12);
	EXPECT_EQ(vec_123->args[1], scalar_3);

	auto* call = Sem().Get<sem::Call>(vec_123);
	ASSERT_NE(call, nullptr);
	ASSERT_EQ(call->Arguments().Length(), 2u);
	EXPECT_EQ(call->Arguments()[0], Sem().Get(vec_12));
	EXPECT_EQ(call->Arguments()[1], Sem().Get(scalar_3));

	auto* ctor = call->Target()->As<sem::ValueConstructor>();
	ASSERT_NE(ctor, nullptr);
	ASSERT_TRUE(ctor->ReturnType()->Is<core::type::Vector>());
	EXPECT_EQ(ctor->ReturnType()->As<core::type::Vector>()->Width(), 3u);
	EXPECT_TRUE(ctor->ReturnType()->As<core::type::Vector>()->type()->Is<core::type::I32>());
	EXPECT_EQ(ctor->ReturnType(), call->Type());

	ASSERT_EQ(ctor->Parameters().Length(), 2u);
	EXPECT_TRUE(ctor->Parameters()[0]->Type()->Is<core::type::Vector>());
	EXPECT_TRUE(ctor->Parameters()[1]->Type()->Is<core::type::I32>());
	}

	// AppendVector(vec_12, scalar_3) -> vec3<i32>(vec_12, i32(scalar_3))
	TEST_F(AppendVectorTest, Vec2i32Var_f32Var) {
	GlobalVar("vec_12", ty.vec2<i32>(), core::AddressSpace::kPrivate);
	GlobalVar("scalar_3", ty.f32(), core::AddressSpace::kPrivate);
	auto* vec_12 = Expr("vec_12");
	auto* scalar_3 = Expr("scalar_3");
	WrapInFunction(vec_12, scalar_3);

	resolver::Resolver resolver(this);
	EXPECT_TRUE(resolver.Resolve());
	ASSERT_THAT(resolver.Diagnostics(), testing::IsEmpty());

	auto* append = AppendVector(this, vec_12, scalar_3);

	auto* vec_123 = As<ast::CallExpression>(append->Declaration());
	ASSERT_NE(vec_123, nullptr);
	ASSERT_EQ(vec_123->args.Length(), 2u);
	EXPECT_EQ(vec_123->args[0], vec_12);
	auto* f32_to_i32 = vec_123->args[1]->As<ast::CallExpression>();
	ASSERT_NE(f32_to_i32, nullptr);
	ast::CheckIdentifier(f32_to_i32->target, "i32");
	ASSERT_EQ(f32_to_i32->args.Length(), 1u);
	EXPECT_EQ(f32_to_i32->args[0], scalar_3);

	auto* call = Sem().Get<sem::Call>(vec_123);
	ASSERT_NE(call, nullptr);
	ASSERT_EQ(call->Arguments().Length(), 2u);
	EXPECT_EQ(call->Arguments()[0], Sem().Get(vec_12));
	EXPECT_EQ(call->Arguments()[1], Sem().Get(f32_to_i32));

	auto* ctor = call->Target()->As<sem::ValueConstructor>();
	ASSERT_NE(ctor, nullptr);
	ASSERT_TRUE(ctor->ReturnType()->Is<core::type::Vector>());
	EXPECT_EQ(ctor->ReturnType()->As<core::type::Vector>()->Width(), 3u);
	EXPECT_TRUE(ctor->ReturnType()->As<core::type::Vector>()->type()->Is<core::type::I32>());
	EXPECT_EQ(ctor->ReturnType(), call->Type());

	ASSERT_EQ(ctor->Parameters().Length(), 2u);
	EXPECT_TRUE(ctor->Parameters()[0]->Type()->Is<core::type::Vector>());
	EXPECT_TRUE(ctor->Parameters()[1]->Type()->Is<core::type::I32>());
	}

	// AppendVector(vec_12, scalar_3) -> vec3<bool>(vec_12, scalar_3)
	TEST_F(AppendVectorTest, Vec2boolVar_boolVar) {
	GlobalVar("vec_12", ty.vec2<bool>(), core::AddressSpace::kPrivate);
	GlobalVar("scalar_3", ty.bool_(), core::AddressSpace::kPrivate);
	auto* vec_12 = Expr("vec_12");
	auto* scalar_3 = Expr("scalar_3");
	WrapInFunction(vec_12, scalar_3);

	resolver::Resolver resolver(this);
	EXPECT_TRUE(resolver.Resolve());
	ASSERT_THAT(resolver.Diagnostics(), testing::IsEmpty());

	auto* append = AppendVector(this, vec_12, scalar_3);

	auto* vec_123 = As<ast::CallExpression>(append->Declaration());
	ASSERT_NE(vec_123, nullptr);
	ASSERT_EQ(vec_123->args.Length(), 2u);
	EXPECT_EQ(vec_123->args[0], vec_12);
	EXPECT_EQ(vec_123->args[1], scalar_3);

	auto* call = Sem().Get<sem::Call>(vec_123);
	ASSERT_NE(call, nullptr);
	ASSERT_EQ(call->Arguments().Length(), 2u);
	EXPECT_EQ(call->Arguments()[0], Sem().Get(vec_12));
	EXPECT_EQ(call->Arguments()[1], Sem().Get(scalar_3));

	auto* ctor = call->Target()->As<sem::ValueConstructor>();
	ASSERT_NE(ctor, nullptr);
	ASSERT_TRUE(ctor->ReturnType()->Is<core::type::Vector>());
	EXPECT_EQ(ctor->ReturnType()->As<core::type::Vector>()->Width(), 3u);
	EXPECT_TRUE(ctor->ReturnType()->As<core::type::Vector>()->type()->Is<core::type::Bool>());
	EXPECT_EQ(ctor->ReturnType(), call->Type());

	ASSERT_EQ(ctor->Parameters().Length(), 2u);
	EXPECT_TRUE(ctor->Parameters()[0]->Type()->Is<core::type::Vector>());
	EXPECT_TRUE(ctor->Parameters()[1]->Type()->Is<core::type::Bool>());
	}

	// AppendVector(vec3<i32>(), 4) -> vec3<bool>(0, 0, 0, 4)
	TEST_F(AppendVectorTest, ZeroVec3i32_i32) {
	auto* scalar = Expr(4_i);
	auto* vec000 = Call<vec3<i32>>();
	WrapInFunction(vec000, scalar);

	resolver::Resolver resolver(this);
	EXPECT_TRUE(resolver.Resolve());
	ASSERT_THAT(resolver.Diagnostics(), testing::IsEmpty());

	auto* append = AppendVector(this, vec000, scalar);

	auto* vec_0004 = As<ast::CallExpression>(append->Declaration());
	ASSERT_NE(vec_0004, nullptr);
	ASSERT_EQ(vec_0004->args.Length(), 4u);
	for (size_t i = 0; i < 3; i++) {
	auto* literal = As<ast::IntLiteralExpression>(vec_0004->args[i]);
	ASSERT_NE(literal, nullptr);
	EXPECT_EQ(literal->value, 0);
	}
	EXPECT_EQ(vec_0004->args[3], scalar);

	auto* call = Sem().Get<sem::Call>(vec_0004);
	ASSERT_NE(call, nullptr);
	ASSERT_EQ(call->Arguments().Length(), 4u);
	EXPECT_EQ(call->Arguments()[0], Sem().Get(vec_0004->args[0]));
	EXPECT_EQ(call->Arguments()[1], Sem().Get(vec_0004->args[1]));
	EXPECT_EQ(call->Arguments()[2], Sem().Get(vec_0004->args[2]));
	EXPECT_EQ(call->Arguments()[3], Sem().Get(scalar));

	auto* ctor = call->Target()->As<sem::ValueConstructor>();
	ASSERT_NE(ctor, nullptr);
	ASSERT_TRUE(ctor->ReturnType()->Is<core::type::Vector>());
	EXPECT_EQ(ctor->ReturnType()->As<core::type::Vector>()->Width(), 4u);
	EXPECT_TRUE(ctor->ReturnType()->As<core::type::Vector>()->type()->Is<core::type::I32>());
	EXPECT_EQ(ctor->ReturnType(), call->Type());

	ASSERT_EQ(ctor->Parameters().Length(), 4u);
	EXPECT_TRUE(ctor->Parameters()[0]->Type()->Is<core::type::I32>());
	EXPECT_TRUE(ctor->Parameters()[1]->Type()->Is<core::type::I32>());
	EXPECT_TRUE(ctor->Parameters()[2]->Type()->Is<core::type::I32>());
	EXPECT_TRUE(ctor->Parameters()[3]->Type()->Is<core::type::I32>());
	}

	} // namespace
	} // namespace tint::writer