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// 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/resolver/resolver.h"
#include "gmock/gmock.h"
#include "src/resolver/resolver_test_helper.h"
using ::testing::UnorderedElementsAre;
namespace tint {
namespace resolver {
namespace {
using ResolverPipelineOverridableConstantTest = ResolverTest;
TEST_F(ResolverPipelineOverridableConstantTest, NonOverridable) {
auto* a = GlobalConst("a", ty.f32(), Construct(ty.f32()));
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem_a = Sem().Get<sem::GlobalVariable>(a);
ASSERT_NE(sem_a, nullptr);
EXPECT_EQ(sem_a->Declaration(), a);
EXPECT_FALSE(sem_a->IsPipelineConstant());
}
TEST_F(ResolverPipelineOverridableConstantTest, WithId) {
auto* a = GlobalConst("a", ty.f32(), Construct(ty.f32()), {Override(7u)});
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem_a = Sem().Get<sem::GlobalVariable>(a);
ASSERT_NE(sem_a, nullptr);
EXPECT_EQ(sem_a->Declaration(), a);
EXPECT_TRUE(sem_a->IsPipelineConstant());
EXPECT_EQ(sem_a->ConstantId(), 7u);
}
TEST_F(ResolverPipelineOverridableConstantTest, WithoutId) {
auto* a = GlobalConst("a", ty.f32(), Construct(ty.f32()), {Override()});
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem_a = Sem().Get<sem::GlobalVariable>(a);
ASSERT_NE(sem_a, nullptr);
EXPECT_EQ(sem_a->Declaration(), a);
EXPECT_TRUE(sem_a->IsPipelineConstant());
EXPECT_EQ(sem_a->ConstantId(), 0u);
}
TEST_F(ResolverPipelineOverridableConstantTest, WithAndWithoutIds) {
std::vector<ast::Variable*> variables;
variables.push_back(
GlobalConst("a", ty.f32(), Construct(ty.f32()), {Override()}));
variables.push_back(
GlobalConst("b", ty.f32(), Construct(ty.f32()), {Override()}));
variables.push_back(
GlobalConst("c", ty.f32(), Construct(ty.f32()), {Override(2u)}));
variables.push_back(
GlobalConst("d", ty.f32(), Construct(ty.f32()), {Override(4u)}));
variables.push_back(
GlobalConst("e", ty.f32(), Construct(ty.f32()), {Override()}));
variables.push_back(
GlobalConst("f", ty.f32(), Construct(ty.f32()), {Override(1u)}));
EXPECT_TRUE(r()->Resolve()) << r()->error();
std::vector<uint16_t> constant_ids;
for (auto* var : variables) {
auto* sem = Sem().Get<sem::GlobalVariable>(var);
ASSERT_NE(sem, nullptr);
constant_ids.push_back(static_cast<uint16_t>(sem->ConstantId()));
}
EXPECT_THAT(constant_ids, UnorderedElementsAre(0u, 3u, 2u, 4u, 5u, 1u));
}
TEST_F(ResolverPipelineOverridableConstantTest, DuplicateIds) {
GlobalConst("a", ty.f32(), Construct(ty.f32()),
{Override(Source{{12, 34}}, 7u)});
GlobalConst("b", ty.f32(), Construct(ty.f32()),
{Override(Source{{56, 78}}, 7u)});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), R"(56:78 error: pipeline constant IDs must be unique
12:34 note: a pipeline constant with an ID of 7 was previously declared here:)");
}
TEST_F(ResolverPipelineOverridableConstantTest, IdTooLarge) {
GlobalConst("a", ty.f32(), Construct(ty.f32()),
{Override(Source{{12, 34}}, 65536u)});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"12:34 error: pipeline constant IDs must be between 0 and 65535");
}
} // namespace
} // namespace resolver
} // namespace tint