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/*
* Copyright (c) 2020, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibTest/TestCase.h>
#include <AK/Array.h>
#include <AK/MemoryStream.h>
TEST_CASE(read_an_integer)
{
u32 expected = 0x01020304, actual;
InputMemoryStream stream { { &expected, sizeof(expected) } };
stream >> actual;
EXPECT(!stream.has_any_error() && stream.eof());
EXPECT_EQ(expected, actual);
}
TEST_CASE(read_a_bool)
{
bool expected = true, actual;
InputMemoryStream stream { { &expected, sizeof(expected) } };
stream >> actual;
EXPECT(!stream.has_any_error() && stream.eof());
EXPECT_EQ(expected, actual);
}
TEST_CASE(read_a_double)
{
double expected = 3.141592653589793, actual;
InputMemoryStream stream { { &expected, sizeof(expected) } };
stream >> actual;
EXPECT(!stream.has_any_error() && stream.eof());
EXPECT_EQ(expected, actual);
}
TEST_CASE(recoverable_error)
{
u32 expected = 0x01020304, actual = 0;
u64 to_large_value = 0;
InputMemoryStream stream { { &expected, sizeof(expected) } };
EXPECT(!stream.has_any_error() && !stream.eof());
stream >> to_large_value;
EXPECT(stream.has_recoverable_error() && !stream.eof());
EXPECT(stream.handle_recoverable_error());
EXPECT(!stream.has_any_error() && !stream.eof());
stream >> actual;
EXPECT(!stream.has_any_error() && stream.eof());
EXPECT_EQ(expected, actual);
}
TEST_CASE(chain_stream_operator)
{
const Array<u8, 4> expected { 0, 1, 2, 3 };
Array<u8, 4> actual;
InputMemoryStream stream { expected };
stream >> actual[0] >> actual[1] >> actual[2] >> actual[3];
EXPECT(!stream.has_any_error() && stream.eof());
EXPECT_EQ(expected, actual);
}
TEST_CASE(seeking_slicing_offset)
{
const Array<u8, 8> input { 0, 1, 2, 3, 4, 5, 6, 7 };
const Array<u8, 4> expected0 { 0, 1, 2, 3 };
const Array<u8, 4> expected1 { 4, 5, 6, 7 };
const Array<u8, 4> expected2 { 1, 2, 3, 4 };
Array<u8, 4> actual0 {}, actual1 {}, actual2 {};
InputMemoryStream stream { input };
stream >> actual0;
EXPECT(!stream.has_any_error() && !stream.eof());
EXPECT_EQ(expected0, actual0);
stream.seek(4);
stream >> actual1;
EXPECT(!stream.has_any_error() && stream.eof());
EXPECT_EQ(expected1, actual1);
stream.seek(1);
stream >> actual2;
EXPECT(!stream.has_any_error() && !stream.eof());
EXPECT_EQ(expected2, actual2);
}
TEST_CASE(duplex_simple)
{
DuplexMemoryStream stream;
EXPECT(stream.eof());
stream << 42;
EXPECT(!stream.eof());
int value;
stream >> value;
EXPECT_EQ(value, 42);
EXPECT(stream.eof());
}
TEST_CASE(duplex_large_buffer)
{
DuplexMemoryStream stream;
Array<u8, 1024> one_kibibyte;
EXPECT_EQ(stream.size(), 0ul);
for (size_t idx = 0; idx < 256; ++idx)
stream << one_kibibyte;
EXPECT_EQ(stream.size(), 256 * 1024ul);
for (size_t idx = 0; idx < 128; ++idx)
stream >> one_kibibyte;
EXPECT_EQ(stream.size(), 128 * 1024ul);
for (size_t idx = 0; idx < 128; ++idx)
stream >> one_kibibyte;
EXPECT(stream.eof());
}
TEST_CASE(read_endian_values)
{
const Array<u8, 8> input { 0, 1, 2, 3, 4, 5, 6, 7 };
InputMemoryStream stream { input };
LittleEndian<u32> value1;
BigEndian<u32> value2;
stream >> value1 >> value2;
EXPECT_EQ(value1, 0x03020100u);
EXPECT_EQ(value2, 0x04050607u);
}
TEST_CASE(write_endian_values)
{
const Array<u8, 8> expected { 4, 3, 2, 1, 1, 2, 3, 4 };
DuplexMemoryStream stream;
stream << LittleEndian<u32> { 0x01020304 } << BigEndian<u32> { 0x01020304 };
EXPECT_EQ(stream.size(), 8u);
EXPECT(expected.span() == stream.copy_into_contiguous_buffer().span());
}
TEST_CASE(new_output_memory_stream)
{
Array<u8, 16> buffer;
OutputMemoryStream stream { buffer };
EXPECT_EQ(stream.size(), 0u);
EXPECT_EQ(stream.remaining(), 16u);
stream << LittleEndian<u16>(0x12'87);
EXPECT_EQ(stream.size(), 2u);
EXPECT_EQ(stream.remaining(), 14u);
stream << buffer;
EXPECT(stream.handle_recoverable_error());
EXPECT_EQ(stream.size(), 2u);
EXPECT_EQ(stream.remaining(), 14u);
EXPECT_EQ(stream.bytes().data(), buffer.data());
EXPECT_EQ(stream.bytes().size(), 2u);
}
TEST_CASE(offset_of_out_of_bounds)
{
Array<u8, 4> target { 0xff, 0xff, 0xff, 0xff };
Array<u8, DuplexMemoryStream::chunk_size> whole_chunk;
whole_chunk.span().fill(0);
DuplexMemoryStream stream;
stream << whole_chunk;
EXPECT(!stream.offset_of(target).has_value());
}
TEST_CASE(unsigned_integer_underflow_regression)
{
Array<u8, DuplexMemoryStream::chunk_size + 1> buffer;
DuplexMemoryStream stream;
stream << buffer;
}
TEST_CASE(offset_calculation_error_regression)
{
Array<u8, DuplexMemoryStream::chunk_size> input, output;
input.span().fill(0xff);
DuplexMemoryStream stream;
stream << 0x00000000 << input << 0x00000000;
stream.discard_or_error(sizeof(int));
stream.read(output);
EXPECT_EQ(input, output);
}
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