// 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/resolver/validator.h"

#include "gmock/gmock.h"
#include "src/tint/resolver/resolver_test_helper.h"
#include "src/tint/sem/atomic.h"

namespace tint::resolver {
namespace {

using ValidatorIsStorableTest = ResolverTest;

TEST_F(ValidatorIsStorableTest, Void) {
  EXPECT_FALSE(v()->IsStorable(create<sem::Void>()));
}

TEST_F(ValidatorIsStorableTest, Scalar) {
  EXPECT_TRUE(v()->IsStorable(create<sem::Bool>()));
  EXPECT_TRUE(v()->IsStorable(create<sem::I32>()));
  EXPECT_TRUE(v()->IsStorable(create<sem::U32>()));
  EXPECT_TRUE(v()->IsStorable(create<sem::F32>()));
}

TEST_F(ValidatorIsStorableTest, Vector) {
  EXPECT_TRUE(v()->IsStorable(create<sem::Vector>(create<sem::I32>(), 2u)));
  EXPECT_TRUE(v()->IsStorable(create<sem::Vector>(create<sem::I32>(), 3u)));
  EXPECT_TRUE(v()->IsStorable(create<sem::Vector>(create<sem::I32>(), 4u)));
  EXPECT_TRUE(v()->IsStorable(create<sem::Vector>(create<sem::U32>(), 2u)));
  EXPECT_TRUE(v()->IsStorable(create<sem::Vector>(create<sem::U32>(), 3u)));
  EXPECT_TRUE(v()->IsStorable(create<sem::Vector>(create<sem::U32>(), 4u)));
  EXPECT_TRUE(v()->IsStorable(create<sem::Vector>(create<sem::F32>(), 2u)));
  EXPECT_TRUE(v()->IsStorable(create<sem::Vector>(create<sem::F32>(), 3u)));
  EXPECT_TRUE(v()->IsStorable(create<sem::Vector>(create<sem::F32>(), 4u)));
}

TEST_F(ValidatorIsStorableTest, Matrix) {
  auto* vec2 = create<sem::Vector>(create<sem::F32>(), 2u);
  auto* vec3 = create<sem::Vector>(create<sem::F32>(), 3u);
  auto* vec4 = create<sem::Vector>(create<sem::F32>(), 4u);
  EXPECT_TRUE(v()->IsStorable(create<sem::Matrix>(vec2, 2u)));
  EXPECT_TRUE(v()->IsStorable(create<sem::Matrix>(vec2, 3u)));
  EXPECT_TRUE(v()->IsStorable(create<sem::Matrix>(vec2, 4u)));
  EXPECT_TRUE(v()->IsStorable(create<sem::Matrix>(vec3, 2u)));
  EXPECT_TRUE(v()->IsStorable(create<sem::Matrix>(vec3, 3u)));
  EXPECT_TRUE(v()->IsStorable(create<sem::Matrix>(vec3, 4u)));
  EXPECT_TRUE(v()->IsStorable(create<sem::Matrix>(vec4, 2u)));
  EXPECT_TRUE(v()->IsStorable(create<sem::Matrix>(vec4, 3u)));
  EXPECT_TRUE(v()->IsStorable(create<sem::Matrix>(vec4, 4u)));
}

TEST_F(ValidatorIsStorableTest, Pointer) {
  auto* ptr = create<sem::Pointer>(
      create<sem::I32>(), ast::StorageClass::kPrivate, ast::Access::kReadWrite);
  EXPECT_FALSE(v()->IsStorable(ptr));
}

TEST_F(ValidatorIsStorableTest, Atomic) {
  EXPECT_TRUE(v()->IsStorable(create<sem::Atomic>(create<sem::I32>())));
  EXPECT_TRUE(v()->IsStorable(create<sem::Atomic>(create<sem::U32>())));
}

TEST_F(ValidatorIsStorableTest, ArraySizedOfStorable) {
  auto* arr = create<sem::Array>(create<sem::I32>(), 5u, 4u, 20u, 4u, 4u);
  EXPECT_TRUE(v()->IsStorable(arr));
}

TEST_F(ValidatorIsStorableTest, ArrayUnsizedOfStorable) {
  auto* arr = create<sem::Array>(create<sem::I32>(), 0u, 4u, 4u, 4u, 4u);
  EXPECT_TRUE(v()->IsStorable(arr));
}

}  // namespace
}  // namespace tint::resolver