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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/switch_statement.h"
#include <sstream>
#include "gtest/gtest.h"
#include "src/ast/bool_literal.h"
#include "src/ast/case_statement.h"
#include "src/ast/identifier_expression.h"
#include "src/ast/type/bool_type.h"
namespace tint {
namespace ast {
namespace {
using SwitchStatementTest = testing::Test;
TEST_F(SwitchStatementTest, Creation) {
ast::type::BoolType bool_type;
auto lit = std::make_unique<BoolLiteral>(&bool_type, true);
auto ident = std::make_unique<IdentifierExpression>("ident");
CaseStatementList body;
body.push_back(
std::make_unique<CaseStatement>(std::move(lit), StatementList()));
auto* ident_ptr = ident.get();
auto* case_ptr = body[0].get();
SwitchStatement stmt(std::move(ident), std::move(body));
EXPECT_EQ(stmt.condition(), ident_ptr);
ASSERT_EQ(stmt.body().size(), 1u);
EXPECT_EQ(stmt.body()[0].get(), case_ptr);
}
TEST_F(SwitchStatementTest, Creation_WithSource) {
auto ident = std::make_unique<IdentifierExpression>("ident");
SwitchStatement stmt(Source{20, 2}, std::move(ident), CaseStatementList());
auto src = stmt.source();
EXPECT_EQ(src.line, 20u);
EXPECT_EQ(src.column, 2u);
}
TEST_F(SwitchStatementTest, IsSwitch) {
SwitchStatement stmt;
EXPECT_TRUE(stmt.IsSwitch());
}
TEST_F(SwitchStatementTest, IsValid) {
ast::type::BoolType bool_type;
auto lit = std::make_unique<BoolLiteral>(&bool_type, true);
auto ident = std::make_unique<IdentifierExpression>("ident");
CaseStatementList body;
body.push_back(
std::make_unique<CaseStatement>(std::move(lit), StatementList()));
SwitchStatement stmt(std::move(ident), std::move(body));
EXPECT_TRUE(stmt.IsValid());
}
TEST_F(SwitchStatementTest, IsValid_Null_Condition) {
ast::type::BoolType bool_type;
auto lit = std::make_unique<BoolLiteral>(&bool_type, true);
CaseStatementList body;
body.push_back(
std::make_unique<CaseStatement>(std::move(lit), StatementList()));
SwitchStatement stmt;
stmt.set_body(std::move(body));
EXPECT_FALSE(stmt.IsValid());
}
TEST_F(SwitchStatementTest, IsValid_Invalid_Condition) {
ast::type::BoolType bool_type;
auto lit = std::make_unique<BoolLiteral>(&bool_type, true);
auto ident = std::make_unique<IdentifierExpression>("");
CaseStatementList body;
body.push_back(
std::make_unique<CaseStatement>(std::move(lit), StatementList()));
SwitchStatement stmt(std::move(ident), std::move(body));
EXPECT_FALSE(stmt.IsValid());
}
TEST_F(SwitchStatementTest, IsValid_Null_BodyStatement) {
ast::type::BoolType bool_type;
auto lit = std::make_unique<BoolLiteral>(&bool_type, true);
auto ident = std::make_unique<IdentifierExpression>("ident");
CaseStatementList body;
body.push_back(
std::make_unique<CaseStatement>(std::move(lit), StatementList()));
body.push_back(nullptr);
SwitchStatement stmt(std::move(ident), std::move(body));
EXPECT_FALSE(stmt.IsValid());
}
TEST_F(SwitchStatementTest, IsValid_Invalid_BodyStatement) {
auto ident = std::make_unique<IdentifierExpression>("ident");
StatementList case_body;
case_body.push_back(nullptr);
CaseStatementList body;
body.push_back(
std::make_unique<CaseStatement>(nullptr, std::move(case_body)));
SwitchStatement stmt(std::move(ident), std::move(body));
EXPECT_FALSE(stmt.IsValid());
}
TEST_F(SwitchStatementTest, ToStr_Empty) {
auto ident = std::make_unique<IdentifierExpression>("ident");
SwitchStatement stmt(std::move(ident), {});
std::ostringstream out;
stmt.to_str(out, 2);
EXPECT_EQ(out.str(), R"( Switch{
Identifier{ident}
{
}
}
)");
}
TEST_F(SwitchStatementTest, ToStr) {
ast::type::BoolType bool_type;
auto lit = std::make_unique<BoolLiteral>(&bool_type, true);
auto ident = std::make_unique<IdentifierExpression>("ident");
CaseStatementList body;
body.push_back(
std::make_unique<CaseStatement>(std::move(lit), StatementList()));
SwitchStatement stmt(std::move(ident), std::move(body));
std::ostringstream out;
stmt.to_str(out, 2);
EXPECT_EQ(out.str(), R"( Switch{
Identifier{ident}
{
Case true{
}
}
}
)");
}
} // namespace
} // namespace ast
} // namespace tint