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ladybird/AK/Tests/TestStream.cpp

111 lines
3.6 KiB
C++

/*
* Copyright (c) 2020, the SerenityOS developers.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <AK/TestSuite.h>
#include <AK/Stream.h>
static bool compare(ReadonlyBytes lhs, ReadonlyBytes rhs)
{
if (lhs.size() != rhs.size())
return false;
for (size_t idx = 0; idx < lhs.size(); ++idx) {
if (lhs[idx] != rhs[idx])
return false;
}
return true;
}
TEST_CASE(read_an_integer)
{
u32 expected = 0x01020304, actual;
InputMemoryStream stream { { &expected, sizeof(expected) } };
stream >> actual;
EXPECT(!stream.has_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_error() && !stream.eof());
stream >> to_large_value;
EXPECT(stream.has_error() && !stream.eof());
EXPECT(stream.handle_error());
EXPECT(!stream.has_error() && !stream.eof());
stream >> actual;
EXPECT(!stream.has_error() && stream.eof());
EXPECT_EQ(expected, actual);
}
TEST_CASE(chain_stream_operator)
{
u8 expected[] { 0, 1, 2, 3 }, actual[4];
InputMemoryStream stream { { expected, sizeof(expected) } };
stream >> actual[0] >> actual[1] >> actual[2] >> actual[3];
EXPECT(!stream.has_error() && stream.eof());
EXPECT(compare({ expected, sizeof(expected) }, { actual, sizeof(actual) }));
}
TEST_CASE(seeking_slicing_offset)
{
u8 input[] { 0, 1, 2, 3, 4, 5, 6, 7 },
expected0[] { 0, 1, 2, 3 },
expected1[] { 4, 5, 6, 7 },
expected2[] { 1, 2, 3, 4 },
actual0[4], actual1[4], actual2[4];
InputMemoryStream stream { { input, sizeof(input) } };
stream >> Bytes { actual0, sizeof(actual0) };
EXPECT(!stream.has_error() && !stream.eof());
EXPECT(compare({ expected0, sizeof(expected0) }, { actual0, sizeof(actual0) }));
stream.seek(4);
stream >> Bytes { actual1, sizeof(actual1) };
EXPECT(!stream.has_error() && stream.eof());
EXPECT(compare({ expected1, sizeof(expected1) }, { actual1, sizeof(actual1) }));
stream.seek(1);
stream >> Bytes { actual2, sizeof(actual2) };
EXPECT(!stream.has_error() && !stream.eof());
EXPECT(compare({ expected2, sizeof(expected2) }, { actual2, sizeof(actual2) }));
}
TEST_MAIN(Stream)