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// 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/writer/wgsl/test_helper.h"
using namespace tint::number_suffixes; // NOLINT
namespace tint::writer::wgsl {
namespace {
using WgslGeneratorImplTest = TestHelper;
TEST_F(WgslGeneratorImplTest, Emit_Switch) {
GlobalVar("cond", ty.i32(), ast::AddressSpace::kPrivate);
auto* def_body = Block(create<ast::BreakStatement>());
auto* def = Case(DefaultCaseSelector(), def_body);
auto* case_body = Block(create<ast::BreakStatement>());
auto* case_stmt = Case(utils::Vector{CaseSelector(5_i)}, case_body);
utils::Vector body{
case_stmt,
def,
};
auto* cond = Expr("cond");
auto* s = Switch(cond, body);
WrapInFunction(s);
GeneratorImpl& gen = Build();
gen.increment_indent();
ASSERT_TRUE(gen.EmitStatement(s)) << gen.error();
EXPECT_EQ(gen.result(), R"( switch(cond) {
case 5i: {
break;
}
default: {
break;
}
}
)");
}
TEST_F(WgslGeneratorImplTest, Emit_Switch_MixedDefault) {
GlobalVar("cond", ty.i32(), ast::AddressSpace::kPrivate);
auto* def_body = Block(create<ast::BreakStatement>());
auto* def = Case(utils::Vector{CaseSelector(5_i), DefaultCaseSelector()}, def_body);
auto* cond = Expr("cond");
auto* s = Switch(cond, utils::Vector{def});
WrapInFunction(s);
GeneratorImpl& gen = Build();
gen.increment_indent();
ASSERT_TRUE(gen.EmitStatement(s)) << gen.error();
EXPECT_EQ(gen.result(), R"( switch(cond) {
case 5i, default: {
break;
}
}
)");
}
} // namespace
} // namespace tint::writer::wgsl