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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/if_statement.h"
#include "gtest/gtest.h"
#include "src/ast/identifier_expression.h"
#include "src/ast/kill_statement.h"
#include "src/ast/nop_statement.h"
namespace tint {
namespace ast {
namespace {
using IfStatementTest = testing::Test;
TEST_F(IfStatementTest, Creation) {
auto cond = std::make_unique<IdentifierExpression>("cond");
StatementList body;
body.push_back(std::make_unique<NopStatement>());
auto* cond_ptr = cond.get();
auto* stmt_ptr = body[0].get();
IfStatement stmt(std::move(cond), std::move(body));
EXPECT_EQ(stmt.condition(), cond_ptr);
ASSERT_EQ(stmt.body().size(), 1u);
EXPECT_EQ(stmt.body()[0].get(), stmt_ptr);
}
TEST_F(IfStatementTest, Creation_WithSource) {
auto cond = std::make_unique<IdentifierExpression>("cond");
StatementList body;
body.push_back(std::make_unique<NopStatement>());
IfStatement stmt(Source{20, 2}, std::move(cond), std::move(body));
auto src = stmt.source();
EXPECT_EQ(src.line, 20u);
EXPECT_EQ(src.column, 2u);
}
TEST_F(IfStatementTest, IsIf) {
IfStatement stmt;
EXPECT_TRUE(stmt.IsIf());
}
TEST_F(IfStatementTest, IsValid) {
auto cond = std::make_unique<IdentifierExpression>("cond");
StatementList body;
body.push_back(std::make_unique<NopStatement>());
IfStatement stmt(std::move(cond), std::move(body));
EXPECT_TRUE(stmt.IsValid());
}
TEST_F(IfStatementTest, IsValid_WithElseStatements) {
auto cond = std::make_unique<IdentifierExpression>("cond");
StatementList body;
body.push_back(std::make_unique<NopStatement>());
ElseStatementList else_stmts;
else_stmts.push_back(std::make_unique<ElseStatement>());
else_stmts[0]->set_condition(std::make_unique<IdentifierExpression>("Ident"));
else_stmts.push_back(std::make_unique<ElseStatement>());
IfStatement stmt(std::move(cond), std::move(body));
stmt.set_else_statements(std::move(else_stmts));
EXPECT_TRUE(stmt.IsValid());
}
TEST_F(IfStatementTest, IsValid_MissingCondition) {
StatementList body;
body.push_back(std::make_unique<NopStatement>());
IfStatement stmt(nullptr, std::move(body));
EXPECT_FALSE(stmt.IsValid());
}
TEST_F(IfStatementTest, IsValid_InvalidCondition) {
auto cond = std::make_unique<IdentifierExpression>("");
StatementList body;
body.push_back(std::make_unique<NopStatement>());
IfStatement stmt(std::move(cond), std::move(body));
EXPECT_FALSE(stmt.IsValid());
}
TEST_F(IfStatementTest, IsValid_NullBodyStatement) {
auto cond = std::make_unique<IdentifierExpression>("cond");
StatementList body;
body.push_back(std::make_unique<NopStatement>());
body.push_back(nullptr);
IfStatement stmt(std::move(cond), std::move(body));
EXPECT_FALSE(stmt.IsValid());
}
TEST_F(IfStatementTest, IsValid_InvalidBodyStatement) {
auto cond = std::make_unique<IdentifierExpression>("cond");
StatementList body;
body.push_back(std::make_unique<NopStatement>());
body.push_back(std::make_unique<IfStatement>());
IfStatement stmt(std::move(cond), std::move(body));
EXPECT_FALSE(stmt.IsValid());
}
TEST_F(IfStatementTest, IsValid_NullElseStatement) {
auto cond = std::make_unique<IdentifierExpression>("cond");
StatementList body;
body.push_back(std::make_unique<NopStatement>());
ElseStatementList else_stmts;
else_stmts.push_back(std::make_unique<ElseStatement>());
else_stmts[0]->set_condition(std::make_unique<IdentifierExpression>("Ident"));
else_stmts.push_back(std::make_unique<ElseStatement>());
else_stmts.push_back(nullptr);
IfStatement stmt(std::move(cond), std::move(body));
stmt.set_else_statements(std::move(else_stmts));
EXPECT_FALSE(stmt.IsValid());
}
TEST_F(IfStatementTest, IsValid_InvalidElseStatement) {
auto cond = std::make_unique<IdentifierExpression>("cond");
StatementList body;
body.push_back(std::make_unique<NopStatement>());
ElseStatementList else_stmts;
else_stmts.push_back(std::make_unique<ElseStatement>());
else_stmts[0]->set_condition(std::make_unique<IdentifierExpression>(""));
IfStatement stmt(std::move(cond), std::move(body));
stmt.set_else_statements(std::move(else_stmts));
EXPECT_FALSE(stmt.IsValid());
}
TEST_F(IfStatementTest, IsValid_MultipleElseWiththoutCondition) {
auto cond = std::make_unique<IdentifierExpression>("cond");
StatementList body;
body.push_back(std::make_unique<NopStatement>());
ElseStatementList else_stmts;
else_stmts.push_back(std::make_unique<ElseStatement>());
else_stmts.push_back(std::make_unique<ElseStatement>());
IfStatement stmt(std::move(cond), std::move(body));
stmt.set_else_statements(std::move(else_stmts));
EXPECT_FALSE(stmt.IsValid());
}
TEST_F(IfStatementTest, IsValid_ElseNotLast) {
auto cond = std::make_unique<IdentifierExpression>("cond");
StatementList body;
body.push_back(std::make_unique<NopStatement>());
ElseStatementList else_stmts;
else_stmts.push_back(std::make_unique<ElseStatement>());
else_stmts.push_back(std::make_unique<ElseStatement>());
else_stmts[1]->set_condition(std::make_unique<IdentifierExpression>("ident"));
IfStatement stmt(std::move(cond), std::move(body));
stmt.set_else_statements(std::move(else_stmts));
EXPECT_FALSE(stmt.IsValid());
}
TEST_F(IfStatementTest, ToStr) {
auto cond = std::make_unique<IdentifierExpression>("cond");
StatementList body;
body.push_back(std::make_unique<NopStatement>());
IfStatement stmt(std::move(cond), std::move(body));
std::ostringstream out;
stmt.to_str(out, 2);
EXPECT_EQ(out.str(), R"( If{
(
Identifier{cond}
)
{
Nop{}
}
}
)");
}
TEST_F(IfStatementTest, ToStr_WithElseStatements) {
auto cond = std::make_unique<IdentifierExpression>("cond");
StatementList body;
body.push_back(std::make_unique<NopStatement>());
StatementList else_if_body;
else_if_body.push_back(std::make_unique<KillStatement>());
StatementList else_body;
else_body.push_back(std::make_unique<NopStatement>());
else_body.push_back(std::make_unique<KillStatement>());
ElseStatementList else_stmts;
else_stmts.push_back(std::make_unique<ElseStatement>());
else_stmts[0]->set_condition(std::make_unique<IdentifierExpression>("ident"));
else_stmts[0]->set_body(std::move(else_if_body));
else_stmts.push_back(std::make_unique<ElseStatement>());
else_stmts[1]->set_body(std::move(else_body));
IfStatement stmt(std::move(cond), std::move(body));
stmt.set_else_statements(std::move(else_stmts));
std::ostringstream out;
stmt.to_str(out, 2);
EXPECT_EQ(out.str(), R"( If{
(
Identifier{cond}
)
{
Nop{}
}
}
Else{
(
Identifier{ident}
)
{
Kill{}
}
}
Else{
{
Nop{}
Kill{}
}
}
)");
}
} // namespace
} // namespace ast
} // namespace tint