// Copyright (c) 2009 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #include "courgette/streams.h" #include #include #include #include "testing/gtest/include/gtest/gtest.h" TEST(StreamsTest, SimpleWriteRead) { const unsigned int kValue1 = 12345; courgette::SinkStream sink; EXPECT_TRUE(sink.WriteVarint32(kValue1)); const uint8_t* sink_buffer = sink.Buffer(); size_t length = sink.Length(); courgette::SourceStream source; source.Init(sink_buffer, length); unsigned int value; bool can_read = source.ReadVarint32(&value); EXPECT_TRUE(can_read); EXPECT_EQ(kValue1, value); EXPECT_EQ(0U, source.Remaining()); } TEST(StreamsTest, SimpleWriteRead2) { courgette::SinkStream sink; EXPECT_TRUE(sink.Write("Hello", 5)); const uint8_t* sink_buffer = sink.Buffer(); size_t sink_length = sink.Length(); courgette::SourceStream source; source.Init(sink_buffer, sink_length); char text[10] = {0}; bool can_read = source.Read(text, 5); EXPECT_TRUE(can_read); EXPECT_EQ(0, memcmp("Hello", text, 5)); EXPECT_EQ(0U, source.Remaining()); } TEST(StreamsTest, StreamSetWriteRead) { courgette::SinkStreamSet out; out.Init(4); const unsigned int kValue1 = 12345; EXPECT_TRUE(out.stream(3)->WriteVarint32(kValue1)); courgette::SinkStream collected; EXPECT_TRUE(out.CopyTo(&collected)); const uint8_t* collected_buffer = collected.Buffer(); size_t collected_length = collected.Length(); courgette::SourceStreamSet in; bool can_init = in.Init(collected_buffer, collected_length); EXPECT_TRUE(can_init); uint32_t value; bool can_read = in.stream(3)->ReadVarint32(&value); EXPECT_TRUE(can_read); EXPECT_EQ(kValue1, value); EXPECT_EQ(0U, in.stream(3)->Remaining()); EXPECT_EQ(0U, in.stream(2)->Remaining()); } TEST(StreamsTest, StreamSetWriteRead2) { const size_t kNumberOfStreams = 4; const unsigned int kEnd = ~0U; courgette::SinkStreamSet out; out.Init(kNumberOfStreams); static const unsigned int data[] = { 3, 123, 3, 1000, 0, 100, 2, 100, 0, 999999, 0, 0, 0, 0, 1, 2, 1, 3, 1, 5, 0, 66, // varint32 edge case values: 1, 127, 1, 128, 1, 129, 1, 16383, 1, 16384, kEnd }; for (size_t i = 0; data[i] != kEnd; i += 2) { size_t id = data[i]; size_t datum = data[i + 1]; EXPECT_TRUE(out.stream(id)->WriteVarint32(datum)); } courgette::SinkStream collected; EXPECT_TRUE(out.CopyTo(&collected)); courgette::SourceStreamSet in; bool can_init = in.Init(collected.Buffer(), collected.Length()); EXPECT_TRUE(can_init); for (size_t i = 0; data[i] != kEnd; i += 2) { size_t id = data[i]; size_t datum = data[i + 1]; uint32_t value = 77; bool can_read = in.stream(id)->ReadVarint32(&value); EXPECT_TRUE(can_read); EXPECT_EQ(datum, value); } for (size_t i = 0; i < kNumberOfStreams; ++i) { EXPECT_EQ(0U, in.stream(i)->Remaining()); } } TEST(StreamsTest, SignedVarint32) { courgette::SinkStream out; static const int32_t data[] = {0, 64, 128, 8192, 16384, 1 << 20, 1 << 21, 1 << 22, 1 << 27, 1 << 28, 0x7fffffff, -0x7fffffff}; std::vector values; for (size_t i = 0; i < sizeof(data)/sizeof(data[0]); ++i) { int32_t basis = data[i]; for (int delta = -4; delta <= 4; ++delta) { EXPECT_TRUE(out.WriteVarint32Signed(basis + delta)); values.push_back(basis + delta); EXPECT_TRUE(out.WriteVarint32Signed(-basis + delta)); values.push_back(-basis + delta); } } courgette::SourceStream in; in.Init(out); for (size_t i = 0; i < values.size(); ++i) { int written_value = values[i]; int32_t datum; bool can_read = in.ReadVarint32Signed(&datum); EXPECT_TRUE(can_read); EXPECT_EQ(written_value, datum); } EXPECT_TRUE(in.Empty()); } TEST(StreamsTest, StreamSetReadWrite) { courgette::SinkStreamSet out; { // Local scope for temporary stream sets. courgette::SinkStreamSet subset1; EXPECT_TRUE(subset1.stream(3)->WriteVarint32(30000)); EXPECT_TRUE(subset1.stream(5)->WriteVarint32(50000)); EXPECT_TRUE(out.WriteSet(&subset1)); courgette::SinkStreamSet subset2; EXPECT_TRUE(subset2.stream(2)->WriteVarint32(20000)); EXPECT_TRUE(subset2.stream(6)->WriteVarint32(60000)); EXPECT_TRUE(out.WriteSet(&subset2)); } courgette::SinkStream collected; EXPECT_TRUE(out.CopyTo(&collected)); courgette::SourceStreamSet in; bool can_init_in = in.Init(collected.Buffer(), collected.Length()); EXPECT_TRUE(can_init_in); courgette::SourceStreamSet subset1; bool can_read_1 = in.ReadSet(&subset1); EXPECT_TRUE(can_read_1); EXPECT_FALSE(in.Empty()); courgette::SourceStreamSet subset2; bool can_read_2 = in.ReadSet(&subset2); EXPECT_TRUE(can_read_2); EXPECT_TRUE(in.Empty()); courgette::SourceStreamSet subset3; bool can_read_3 = in.ReadSet(&subset3); EXPECT_FALSE(can_read_3); EXPECT_FALSE(subset1.Empty()); EXPECT_FALSE(subset1.Empty()); uint32_t datum; EXPECT_TRUE(subset1.stream(3)->ReadVarint32(&datum)); EXPECT_EQ(30000U, datum); EXPECT_TRUE(subset1.stream(5)->ReadVarint32(&datum)); EXPECT_EQ(50000U, datum); EXPECT_TRUE(subset1.Empty()); EXPECT_TRUE(subset2.stream(2)->ReadVarint32(&datum)); EXPECT_EQ(20000U, datum); EXPECT_TRUE(subset2.stream(6)->ReadVarint32(&datum)); EXPECT_EQ(60000U, datum); EXPECT_TRUE(subset2.Empty()); }