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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/spirv/reader/ast_parser/fail_stream.h"
#include "gmock/gmock.h"
#include "src/tint/utils/text/string_stream.h"
namespace tint::spirv::reader::ast_parser {
namespace {
using ::testing::Eq;
using FailStreamTest = ::testing::Test;
TEST_F(FailStreamTest, ConversionToBoolIsSameAsStatusMethod) {
bool flag = true;
FailStream fs(&flag, nullptr);
EXPECT_TRUE(fs.status());
EXPECT_TRUE(bool(fs)); // NOLINT
flag = false;
EXPECT_FALSE(fs.status());
EXPECT_FALSE(bool(fs)); // NOLINT
flag = true;
EXPECT_TRUE(fs.status());
EXPECT_TRUE(bool(fs)); // NOLINT
}
TEST_F(FailStreamTest, FailMethodChangesStatusToFalse) {
bool flag = true;
FailStream fs(&flag, nullptr);
EXPECT_TRUE(flag);
EXPECT_TRUE(bool(fs)); // NOLINT
fs.Fail();
EXPECT_FALSE(flag);
EXPECT_FALSE(bool(fs)); // NOLINT
}
TEST_F(FailStreamTest, FailMethodReturnsSelf) {
bool flag = true;
FailStream fs(&flag, nullptr);
FailStream& result = fs.Fail();
EXPECT_THAT(&result, Eq(&fs));
}
TEST_F(FailStreamTest, ShiftOperatorAccumulatesValues) {
bool flag = true;
StringStream ss;
FailStream fs(&flag, &ss);
ss << "prefix ";
fs << "cat " << 42;
EXPECT_THAT(ss.str(), Eq("prefix cat 42"));
}
} // namespace
} // namespace tint::spirv::reader::ast_parser