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#include "src/tint/lang/core/ir/construct.h"

#include "gmock/gmock.h"
#include "gtest/gtest-spi.h"
#include "src/tint/lang/core/ir/ir_helper_test.h"

namespace tint::core::ir {
namespace {

using namespace tint::core::number_suffixes;  // NOLINT
using IR_ConstructTest = IRTestHelper;

TEST_F(IR_ConstructTest, Usage) {
    auto* arg1 = b.Constant(true);
    auto* arg2 = b.Constant(false);
    auto* c = b.Construct(mod.Types().f32(), arg1, arg2);

    EXPECT_THAT(arg1->Usages(), testing::UnorderedElementsAre(Usage{c, 0u}));
    EXPECT_THAT(arg2->Usages(), testing::UnorderedElementsAre(Usage{c, 1u}));
}

TEST_F(IR_ConstructTest, Result) {
    auto* arg1 = b.Constant(true);
    auto* arg2 = b.Constant(false);
    auto* c = b.Construct(mod.Types().f32(), arg1, arg2);

    EXPECT_EQ(c->Results().Length(), 1u);
    EXPECT_TRUE(c->Result(0)->Is<InstructionResult>());
    EXPECT_EQ(c, c->Result(0)->Instruction());
}

TEST_F(IR_ConstructTest, Fail_NullType) {
    EXPECT_FATAL_FAILURE(
        {
            Module mod;
            Builder b{mod};
            b.Construct(nullptr);
        },
        "");
}

TEST_F(IR_ConstructTest, Clone) {
    auto* arg1 = b.Constant(true);
    auto* arg2 = b.Constant(false);
    auto* c = b.Construct(mod.Types().f32(), arg1, arg2);

    auto* new_c = clone_ctx.Clone(c);

    EXPECT_NE(c, new_c);
    EXPECT_NE(c->Result(0), new_c->Result(0));
    EXPECT_EQ(mod.Types().f32(), new_c->Result(0)->Type());

    auto args = new_c->Args();
    EXPECT_EQ(2u, args.Length());

    auto* val0 = args[0]->As<Constant>()->Value();
    EXPECT_TRUE(val0->As<core::constant::Scalar<bool>>()->ValueAs<bool>());

    auto* val1 = args[1]->As<Constant>()->Value();
    EXPECT_FALSE(val1->As<core::constant::Scalar<bool>>()->ValueAs<bool>());
}

TEST_F(IR_ConstructTest, CloneEmpty) {
    auto* c = b.Construct(mod.Types().f32());

    auto* new_c = clone_ctx.Clone(c);
    EXPECT_NE(c->Result(0), new_c->Result(0));
    EXPECT_EQ(mod.Types().f32(), new_c->Result(0)->Type());
    EXPECT_TRUE(new_c->Args().IsEmpty());
}

}  // namespace
}  // namespace tint::core::ir