// Copyright 2020 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/ast/variable_decl_statement.h"
#include "src/tint/writer/wgsl/test_helper.h"

using namespace tint::number_suffixes;  // NOLINT

namespace tint::writer::wgsl {
namespace {

using WgslGeneratorImplTest = TestHelper;

TEST_F(WgslGeneratorImplTest, Emit_VariableDeclStatement) {
    auto* var = Var("a", ty.f32());

    auto* stmt = Decl(var);
    WrapInFunction(stmt);

    GeneratorImpl& gen = Build();

    gen.increment_indent();

    ASSERT_TRUE(gen.EmitStatement(stmt)) << gen.error();
    EXPECT_EQ(gen.result(), "  var a : f32;\n");
}

TEST_F(WgslGeneratorImplTest, Emit_VariableDeclStatement_InferredType) {
    auto* var = Var("a", nullptr, ast::StorageClass::kNone, Expr(123_i));

    auto* stmt = Decl(var);
    WrapInFunction(stmt);

    GeneratorImpl& gen = Build();

    gen.increment_indent();

    ASSERT_TRUE(gen.EmitStatement(stmt)) << gen.error();
    EXPECT_EQ(gen.result(), "  var a = 123i;\n");
}

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