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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/ast/fallthrough_statement.h"
#include "src/writer/msl/test_helper.h"
namespace tint {
namespace writer {
namespace msl {
namespace {
using MslGeneratorImplTest = TestHelper;
TEST_F(MslGeneratorImplTest, Emit_Case) {
auto* s = Switch(1, Case(Literal(5), Block(create<ast::BreakStatement>())),
DefaultCase());
WrapInFunction(s);
GeneratorImpl& gen = Build();
gen.increment_indent();
ASSERT_TRUE(gen.EmitCase(s->body()[0])) << gen.error();
EXPECT_EQ(gen.result(), R"( case 5: {
break;
}
)");
}
TEST_F(MslGeneratorImplTest, Emit_Case_BreaksByDefault) {
auto* s = Switch(1, Case(Literal(5), Block()), DefaultCase());
WrapInFunction(s);
GeneratorImpl& gen = Build();
gen.increment_indent();
ASSERT_TRUE(gen.EmitCase(s->body()[0])) << gen.error();
EXPECT_EQ(gen.result(), R"( case 5: {
break;
}
)");
}
TEST_F(MslGeneratorImplTest, Emit_Case_WithFallthrough) {
auto* s =
Switch(1, Case(Literal(5), Block(create<ast::FallthroughStatement>())),
DefaultCase());
WrapInFunction(s);
GeneratorImpl& gen = Build();
gen.increment_indent();
ASSERT_TRUE(gen.EmitCase(s->body()[0])) << gen.error();
EXPECT_EQ(gen.result(), R"( case 5: {
/* fallthrough */
}
)");
}
TEST_F(MslGeneratorImplTest, Emit_Case_MultipleSelectors) {
auto* s = Switch(
1, Case({Literal(5), Literal(6)}, Block(create<ast::BreakStatement>())),
DefaultCase());
WrapInFunction(s);
GeneratorImpl& gen = Build();
gen.increment_indent();
ASSERT_TRUE(gen.EmitCase(s->body()[0])) << gen.error();
EXPECT_EQ(gen.result(), R"( case 5:
case 6: {
break;
}
)");
}
TEST_F(MslGeneratorImplTest, Emit_Case_Default) {
auto* s = Switch(1, DefaultCase(Block(create<ast::BreakStatement>())));
WrapInFunction(s);
GeneratorImpl& gen = Build();
gen.increment_indent();
ASSERT_TRUE(gen.EmitCase(s->body()[0])) << gen.error();
EXPECT_EQ(gen.result(), R"( default: {
break;
}
)");
}
} // namespace
} // namespace msl
} // namespace writer
} // namespace tint