85 lines
2.5 KiB
C++
85 lines
2.5 KiB
C++
// Copyright 2023 The Pigweed Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not
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// use this file except in compliance with the License. You may obtain a copy of
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// the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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// License for the specific language governing permissions and limitations under
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// the License.
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#include "pw_stream/null_stream.h"
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#include <cstddef>
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#include "gtest/gtest.h"
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namespace pw::stream {
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namespace {
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TEST(NullStream, DefaultConservativeWriteLimit) {
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NullStream stream;
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EXPECT_EQ(stream.ConservativeWriteLimit(), Stream::kUnlimited);
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}
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TEST(NullStream, DefaultConservativeReadLimit) {
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NullStream stream;
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EXPECT_EQ(stream.ConservativeReadLimit(), Stream::kUnlimited);
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}
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TEST(NullStream, DefaultConservativeReadWriteLimit) {
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NullStream stream;
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EXPECT_EQ(stream.ConservativeWriteLimit(), Stream::kUnlimited);
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EXPECT_EQ(stream.ConservativeReadLimit(), Stream::kUnlimited);
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}
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TEST(NullStream, DefaultTell) {
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NullStream stream;
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EXPECT_EQ(stream.Tell(), Stream::kUnknownPosition);
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}
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TEST(CountingNullStream, DefaultConservativeWriteLimit) {
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CountingNullStream stream;
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EXPECT_EQ(stream.ConservativeWriteLimit(), Stream::kUnlimited);
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}
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TEST(CountingNullStream, DefaultConservativeReadLimit) {
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CountingNullStream stream;
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EXPECT_EQ(stream.ConservativeReadLimit(), Stream::kUnlimited);
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}
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TEST(CountingNullStream, DefaultConservativeReadWriteLimit) {
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CountingNullStream stream;
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EXPECT_EQ(stream.ConservativeWriteLimit(), Stream::kUnlimited);
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EXPECT_EQ(stream.ConservativeReadLimit(), Stream::kUnlimited);
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}
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TEST(CountingNullStream, DefaultTell) {
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CountingNullStream stream;
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EXPECT_EQ(stream.Tell(), Stream::kUnknownPosition);
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}
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std::byte data[32];
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TEST(CountingNullStream, CountsWrites) {
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CountingNullStream stream;
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EXPECT_EQ(OkStatus(), stream.Write(data));
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EXPECT_EQ(sizeof(data), stream.bytes_written());
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EXPECT_EQ(OkStatus(), stream.Write(span(data).first(1)));
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EXPECT_EQ(sizeof(data) + 1, stream.bytes_written());
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EXPECT_EQ(OkStatus(), stream.Write(span<std::byte>()));
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EXPECT_EQ(sizeof(data) + 1, stream.bytes_written());
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EXPECT_EQ(OkStatus(), stream.Write(data));
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EXPECT_EQ(2 * sizeof(data) + 1, stream.bytes_written());
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}
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} // namespace
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} // namespace pw::stream
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