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// Copyright 2023 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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#include "src/tint/lang/core/ir/exit_switch.h"
#include "gmock/gmock.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_ExitSwitchTest = IRTestHelper;
TEST_F(IR_ExitSwitchTest, Usage) {
auto* arg1 = b.Constant(1_u);
auto* arg2 = b.Constant(2_u);
auto* switch_ = b.Switch(true);
auto* e = b.ExitSwitch(switch_, arg1, arg2);
EXPECT_THAT(arg1->Usages(), testing::UnorderedElementsAre(Usage{e, 0u}));
EXPECT_THAT(arg2->Usages(), testing::UnorderedElementsAre(Usage{e, 1u}));
EXPECT_EQ(switch_->Result(0), nullptr);
}
TEST_F(IR_ExitSwitchTest, Result) {
auto* arg1 = b.Constant(1_u);
auto* arg2 = b.Constant(2_u);
auto* switch_ = b.Switch(true);
auto* e = b.ExitSwitch(switch_, arg1, arg2);
EXPECT_TRUE(e->Results().IsEmpty());
}
TEST_F(IR_ExitSwitchTest, Destroy) {
auto* swch = b.Switch(1_i);
auto* exit = b.ExitSwitch(swch);
EXPECT_THAT(swch->Exits(), testing::UnorderedElementsAre(exit));
exit->Destroy();
EXPECT_TRUE(swch->Exits().IsEmpty());
EXPECT_FALSE(exit->Alive());
}
TEST_F(IR_ExitSwitchTest, Clone) {
auto* arg1 = b.Constant(1_u);
auto* arg2 = b.Constant(2_u);
auto* switch_ = b.Switch(true);
auto* e = b.ExitSwitch(switch_, arg1, arg2);
auto* new_switch = clone_ctx.Clone(switch_);
auto* new_exit = clone_ctx.Clone(e);
EXPECT_NE(e, new_exit);
EXPECT_EQ(new_switch, new_exit->Switch());
auto args = new_exit->Args();
ASSERT_EQ(2u, args.Length());
auto new_arg1 = args[0]->As<Constant>()->Value();
ASSERT_TRUE(new_arg1->Is<core::constant::Scalar<u32>>());
EXPECT_EQ(1_u, new_arg1->As<core::constant::Scalar<u32>>()->ValueAs<u32>());
auto new_arg2 = args[1]->As<Constant>()->Value();
ASSERT_TRUE(new_arg2->Is<core::constant::Scalar<u32>>());
EXPECT_EQ(2_u, new_arg2->As<core::constant::Scalar<u32>>()->ValueAs<u32>());
}
TEST_F(IR_ExitSwitchTest, CloneNoArgs) {
auto* switch_ = b.Switch(true);
auto* e = b.ExitSwitch(switch_);
auto* new_switch = clone_ctx.Clone(switch_);
auto* new_exit = clone_ctx.Clone(e);
EXPECT_EQ(new_switch, new_exit->Switch());
EXPECT_TRUE(new_exit->Args().IsEmpty());
}
} // namespace
} // namespace tint::core::ir