dawn-cmake/src/ast/switch_statement_test.cc

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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 "src/ast/case_statement.h"
#include "src/ast/identifier_expression.h"
#include "src/ast/sint_literal.h"
#include "src/ast/test_helper.h"
#include "src/ast/type/i32_type.h"
namespace tint {
namespace ast {
namespace {
using SwitchStatementTest = TestHelper;
TEST_F(SwitchStatementTest, Creation) {
type::I32 i32;
CaseSelectorList lit;
lit.push_back(create<SintLiteral>(Source{}, &i32, 1));
auto* ident = create<IdentifierExpression>(
Source{}, mod.RegisterSymbol("ident"), "ident");
CaseStatementList body;
auto* case_stmt = create<CaseStatement>(
Source{}, lit, create<BlockStatement>(Source{}, StatementList{}));
body.push_back(case_stmt);
SwitchStatement stmt(Source{}, ident, body);
EXPECT_EQ(stmt.condition(), ident);
ASSERT_EQ(stmt.body().size(), 1u);
EXPECT_EQ(stmt.body()[0], case_stmt);
}
TEST_F(SwitchStatementTest, Creation_WithSource) {
auto* ident = create<IdentifierExpression>(
Source{}, mod.RegisterSymbol("ident"), "ident");
SwitchStatement stmt(Source{Source::Location{20, 2}}, ident,
CaseStatementList());
auto src = stmt.source();
EXPECT_EQ(src.range.begin.line, 20u);
EXPECT_EQ(src.range.begin.column, 2u);
}
TEST_F(SwitchStatementTest, IsSwitch) {
type::I32 i32;
CaseSelectorList lit;
lit.push_back(create<SintLiteral>(Source{}, &i32, 2));
auto* ident = create<IdentifierExpression>(
Source{}, mod.RegisterSymbol("ident"), "ident");
CaseStatementList body;
body.push_back(create<CaseStatement>(
Source{}, lit, create<BlockStatement>(Source{}, StatementList{})));
SwitchStatement stmt(Source{}, ident, body);
EXPECT_TRUE(stmt.Is<SwitchStatement>());
}
TEST_F(SwitchStatementTest, IsValid) {
type::I32 i32;
CaseSelectorList lit;
lit.push_back(create<SintLiteral>(Source{}, &i32, 2));
auto* ident = create<IdentifierExpression>(
Source{}, mod.RegisterSymbol("ident"), "ident");
CaseStatementList body;
body.push_back(create<CaseStatement>(
Source{}, lit, create<BlockStatement>(Source{}, StatementList{})));
SwitchStatement stmt(Source{}, ident, body);
EXPECT_TRUE(stmt.IsValid());
}
TEST_F(SwitchStatementTest, IsValid_Null_Condition) {
type::I32 i32;
CaseSelectorList lit;
lit.push_back(create<SintLiteral>(Source{}, &i32, 2));
CaseStatementList body;
body.push_back(create<CaseStatement>(
Source{}, lit, create<BlockStatement>(Source{}, StatementList{})));
SwitchStatement stmt(Source{}, nullptr, body);
EXPECT_FALSE(stmt.IsValid());
}
TEST_F(SwitchStatementTest, IsValid_Invalid_Condition) {
type::I32 i32;
CaseSelectorList lit;
lit.push_back(create<SintLiteral>(Source{}, &i32, 2));
auto* ident =
create<IdentifierExpression>(Source{}, mod.RegisterSymbol(""), "");
CaseStatementList body;
body.push_back(create<CaseStatement>(
Source{}, lit, create<BlockStatement>(Source{}, StatementList{})));
SwitchStatement stmt(Source{}, ident, body);
EXPECT_FALSE(stmt.IsValid());
}
TEST_F(SwitchStatementTest, IsValid_Null_BodyStatement) {
type::I32 i32;
CaseSelectorList lit;
lit.push_back(create<SintLiteral>(Source{}, &i32, 2));
auto* ident = create<IdentifierExpression>(
Source{}, mod.RegisterSymbol("ident"), "ident");
CaseStatementList body;
body.push_back(create<CaseStatement>(
Source{}, lit, create<BlockStatement>(Source{}, StatementList{})));
body.push_back(nullptr);
SwitchStatement stmt(Source{}, ident, body);
EXPECT_FALSE(stmt.IsValid());
}
TEST_F(SwitchStatementTest, IsValid_Invalid_BodyStatement) {
auto* ident = create<IdentifierExpression>(
Source{}, mod.RegisterSymbol("ident"), "ident");
auto* case_body = create<BlockStatement>(Source{}, StatementList{
nullptr,
});
CaseStatementList body;
body.push_back(
create<CaseStatement>(Source{}, CaseSelectorList{}, case_body));
SwitchStatement stmt(Source{}, ident, body);
EXPECT_FALSE(stmt.IsValid());
}
TEST_F(SwitchStatementTest, ToStr_Empty) {
auto* ident = create<IdentifierExpression>(
Source{}, mod.RegisterSymbol("ident"), "ident");
SwitchStatement stmt(Source{}, ident, {});
std::ostringstream out;
stmt.to_str(out, 2);
EXPECT_EQ(demangle(out.str()), R"( Switch{
Identifier[not set]{ident}
{
}
}
)");
}
TEST_F(SwitchStatementTest, ToStr) {
type::I32 i32;
CaseSelectorList lit;
lit.push_back(create<SintLiteral>(Source{}, &i32, 2));
auto* ident = create<IdentifierExpression>(
Source{}, mod.RegisterSymbol("ident"), "ident");
CaseStatementList body;
body.push_back(create<CaseStatement>(
Source{}, lit, create<BlockStatement>(Source{}, StatementList{})));
SwitchStatement stmt(Source{}, ident, body);
std::ostringstream out;
stmt.to_str(out, 2);
EXPECT_EQ(demangle(out.str()), R"( Switch{
Identifier[not set]{ident}
{
Case 2{
}
}
}
)");
}
} // namespace
} // namespace ast
} // namespace tint