dawn-cmake/src/ast/if_statement_test.cc

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6.5 KiB
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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 "src/ast/discard_statement.h"
#include "src/ast/identifier_expression.h"
#include "src/ast/test_helper.h"
namespace tint {
namespace ast {
namespace {
using IfStatementTest = TestHelper;
TEST_F(IfStatementTest, Creation) {
auto* cond = Expr("cond");
auto* body =
create<BlockStatement>(StatementList{create<DiscardStatement>()});
auto* stmt = create<IfStatement>(Source{Source::Location{20, 2}}, cond, body,
ElseStatementList{});
auto src = stmt->source();
EXPECT_EQ(src.range.begin.line, 20u);
EXPECT_EQ(src.range.begin.column, 2u);
}
TEST_F(IfStatementTest, IsIf) {
auto* stmt = create<IfStatement>(
nullptr, create<BlockStatement>(StatementList{}), ElseStatementList{});
EXPECT_TRUE(stmt->Is<IfStatement>());
}
TEST_F(IfStatementTest, IsValid) {
auto* cond = Expr("cond");
auto* body =
create<BlockStatement>(StatementList{create<DiscardStatement>()});
auto* stmt = create<IfStatement>(cond, body, ElseStatementList{});
EXPECT_TRUE(stmt->IsValid());
}
TEST_F(IfStatementTest, IsValid_WithElseStatements) {
auto* cond = Expr("cond");
auto* body =
create<BlockStatement>(StatementList{create<DiscardStatement>()});
auto* stmt = create<IfStatement>(
cond, body,
ElseStatementList{
create<ElseStatement>(Expr("Ident"),
create<BlockStatement>(StatementList{})),
create<ElseStatement>(nullptr,
create<BlockStatement>(StatementList{})),
});
EXPECT_TRUE(stmt->IsValid());
}
TEST_F(IfStatementTest, IsValid_MissingCondition) {
auto* body =
create<BlockStatement>(StatementList{create<DiscardStatement>()});
auto* stmt = create<IfStatement>(nullptr, body, ElseStatementList{});
EXPECT_FALSE(stmt->IsValid());
}
TEST_F(IfStatementTest, IsValid_InvalidCondition) {
auto* cond = Expr("");
auto* body =
create<BlockStatement>(StatementList{create<DiscardStatement>()});
auto* stmt = create<IfStatement>(cond, body, ElseStatementList{});
EXPECT_FALSE(stmt->IsValid());
}
TEST_F(IfStatementTest, IsValid_NullBodyStatement) {
auto* cond = Expr("cond");
auto* body = create<BlockStatement>(StatementList{
create<DiscardStatement>(),
nullptr,
});
auto* stmt = create<IfStatement>(cond, body, ElseStatementList{});
EXPECT_FALSE(stmt->IsValid());
}
TEST_F(IfStatementTest, IsValid_InvalidBodyStatement) {
auto* cond = Expr("cond");
auto* body = create<BlockStatement>(
StatementList{
create<DiscardStatement>(),
create<IfStatement>(nullptr, create<BlockStatement>(StatementList{}),
ast::ElseStatementList{}),
});
auto* stmt = create<IfStatement>(cond, body, ElseStatementList{});
EXPECT_FALSE(stmt->IsValid());
}
TEST_F(IfStatementTest, IsValid_NullElseStatement) {
auto* cond = Expr("cond");
auto* body =
create<BlockStatement>(StatementList{create<DiscardStatement>()});
auto* stmt = create<IfStatement>(
cond, body,
ElseStatementList{
create<ElseStatement>(Expr("Ident"),
create<BlockStatement>(StatementList{})),
create<ElseStatement>(nullptr,
create<BlockStatement>(StatementList{})),
nullptr,
});
EXPECT_FALSE(stmt->IsValid());
}
TEST_F(IfStatementTest, IsValid_InvalidElseStatement) {
auto* cond = Expr("cond");
auto* body =
create<BlockStatement>(StatementList{create<DiscardStatement>()});
auto* stmt = create<IfStatement>(
cond, body,
ElseStatementList{
create<ElseStatement>(Expr(""),
create<BlockStatement>(StatementList{})),
});
EXPECT_FALSE(stmt->IsValid());
}
TEST_F(IfStatementTest, IsValid_MultipleElseWiththoutCondition) {
auto* cond = Expr("cond");
auto* body =
create<BlockStatement>(StatementList{create<DiscardStatement>()});
auto* stmt = create<IfStatement>(
cond, body,
ElseStatementList{
create<ElseStatement>(nullptr,
create<BlockStatement>(StatementList{})),
create<ElseStatement>(nullptr,
create<BlockStatement>(StatementList{})),
});
EXPECT_FALSE(stmt->IsValid());
}
TEST_F(IfStatementTest, IsValid_ElseNotLast) {
auto* cond = Expr("cond");
auto* body =
create<BlockStatement>(StatementList{create<DiscardStatement>()});
auto* stmt = create<IfStatement>(
cond, body,
ElseStatementList{
create<ElseStatement>(nullptr,
create<BlockStatement>(StatementList{})),
create<ElseStatement>(Expr("Ident"),
create<BlockStatement>(StatementList{})),
});
EXPECT_FALSE(stmt->IsValid());
}
TEST_F(IfStatementTest, ToStr) {
auto* cond = Expr("cond");
auto* body =
create<BlockStatement>(StatementList{create<DiscardStatement>()});
auto* stmt = create<IfStatement>(cond, body, ElseStatementList{});
EXPECT_EQ(str(stmt), R"(If{
(
Identifier[not set]{cond}
)
{
Discard{}
}
}
)");
}
TEST_F(IfStatementTest, ToStr_WithElseStatements) {
auto* cond = Expr("cond");
auto* body =
create<BlockStatement>(StatementList{create<DiscardStatement>()});
auto* else_if_body =
create<BlockStatement>(StatementList{create<DiscardStatement>()});
auto* else_body = create<BlockStatement>(
StatementList{create<DiscardStatement>(), create<DiscardStatement>()});
auto* stmt = create<IfStatement>(
cond, body,
ElseStatementList{
create<ElseStatement>(Expr("ident"), else_if_body),
create<ElseStatement>(nullptr, else_body),
});
EXPECT_EQ(str(stmt), R"(If{
(
Identifier[not set]{cond}
)
{
Discard{}
}
}
Else{
(
Identifier[not set]{ident}
)
{
Discard{}
}
}
Else{
{
Discard{}
Discard{}
}
}
)");
}
} // namespace
} // namespace ast
} // namespace tint