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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/tint/lang/wgsl/ast/switch_statement.h"
#include "gmock/gmock.h"
#include "gtest/gtest-spi.h"
#include "src/tint/lang/wgsl/ast/helper_test.h"
using namespace tint::core::number_suffixes; // NOLINT
namespace tint::ast {
namespace {
using SwitchStatementTest = TestHelper;
TEST_F(SwitchStatementTest, Creation) {
auto* case_stmt = create<CaseStatement>(tint::Vector{CaseSelector(1_u)}, Block());
auto* ident = Expr("ident");
tint::Vector body{case_stmt};
auto* stmt = create<SwitchStatement>(ident, body, tint::Empty, tint::Empty);
EXPECT_EQ(stmt->condition, ident);
ASSERT_EQ(stmt->body.Length(), 1u);
EXPECT_EQ(stmt->body[0], case_stmt);
}
TEST_F(SwitchStatementTest, Creation_WithSource) {
auto* ident = Expr("ident");
auto* stmt = create<SwitchStatement>(Source{Source::Location{20, 2}}, ident, tint::Empty,
tint::Empty, tint::Empty);
auto src = stmt->source;
EXPECT_EQ(src.range.begin.line, 20u);
EXPECT_EQ(src.range.begin.column, 2u);
}
TEST_F(SwitchStatementTest, Creation_WithAttributes) {
auto* attr1 = DiagnosticAttribute(core::DiagnosticSeverity::kOff, "foo");
auto* attr2 = DiagnosticAttribute(core::DiagnosticSeverity::kOff, "bar");
auto* ident = Expr("ident");
auto* stmt =
create<SwitchStatement>(ident, tint::Empty, tint::Vector{attr1, attr2}, tint::Empty);
EXPECT_THAT(stmt->attributes, testing::ElementsAre(attr1, attr2));
}
TEST_F(SwitchStatementTest, Creation_WithBodyAttributes) {
auto* attr1 = DiagnosticAttribute(core::DiagnosticSeverity::kOff, "foo");
auto* attr2 = DiagnosticAttribute(core::DiagnosticSeverity::kOff, "bar");
auto* ident = Expr("ident");
auto* stmt =
create<SwitchStatement>(ident, tint::Empty, tint::Empty, tint::Vector{attr1, attr2});
EXPECT_THAT(stmt->body_attributes, testing::ElementsAre(attr1, attr2));
}
TEST_F(SwitchStatementTest, IsSwitch) {
tint::Vector lit{CaseSelector(2_i)};
auto* ident = Expr("ident");
tint::Vector body{create<CaseStatement>(lit, Block())};
auto* stmt = create<SwitchStatement>(ident, body, tint::Empty, tint::Empty);
EXPECT_TRUE(stmt->Is<SwitchStatement>());
}
TEST_F(SwitchStatementTest, Assert_Null_Condition) {
using CaseStatementList = tint::Vector<const CaseStatement*, 2>;
EXPECT_FATAL_FAILURE(
{
ProgramBuilder b;
CaseStatementList cases;
cases.Push(
b.create<CaseStatement>(tint::Vector{b.CaseSelector(b.Expr(1_i))}, b.Block()));
b.create<SwitchStatement>(nullptr, cases, tint::Empty, tint::Empty);
},
"internal compiler error");
}
TEST_F(SwitchStatementTest, Assert_Null_CaseStatement) {
using CaseStatementList = tint::Vector<const CaseStatement*, 2>;
EXPECT_FATAL_FAILURE(
{
ProgramBuilder b;
b.create<SwitchStatement>(b.Expr(true), CaseStatementList{nullptr}, tint::Empty,
tint::Empty);
},
"internal compiler error");
}
TEST_F(SwitchStatementTest, Assert_DifferentGenerationID_Condition) {
EXPECT_FATAL_FAILURE(
{
ProgramBuilder b1;
ProgramBuilder b2;
b1.create<SwitchStatement>(b2.Expr(true),
tint::Vector{
b1.create<CaseStatement>(
tint::Vector{
b1.CaseSelector(b1.Expr(1_i)),
},
b1.Block()),
},
tint::Empty, tint::Empty);
},
"internal compiler error");
}
TEST_F(SwitchStatementTest, Assert_DifferentGenerationID_CaseStatement) {
EXPECT_FATAL_FAILURE(
{
ProgramBuilder b1;
ProgramBuilder b2;
b1.create<SwitchStatement>(b1.Expr(true),
tint::Vector{
b2.create<CaseStatement>(
tint::Vector{
b2.CaseSelector(b2.Expr(1_i)),
},
b2.Block()),
},
tint::Empty, tint::Empty);
},
"internal compiler error");
}
} // namespace
} // namespace tint::ast