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Harden binary stream overlapping writes

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This commit is contained in:
omigamedev
2026-06-02 17:35:00 +02:00
parent 06a44705d0
commit 9759abde44
4 changed files with 50 additions and 2 deletions
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21
tests/foundation/binary_stream_tests.cpp
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@@ -87,6 +87,26 @@ void boundary_reads_are_consistent(pp::tests::Harness& h)
}
}
void appends_overlapping_source_bytes_deterministically(pp::tests::Harness& h)
{
std::vector<std::byte> bytes {
std::byte { 0x10 },
std::byte { 0x20 },
std::byte { 0x30 },
};
ByteWriter writer(bytes);
const auto status = writer.write_bytes(std::span<const std::byte>(bytes.data() + 1, 2));
PP_EXPECT(h, status.ok());
PP_EXPECT(h, writer.size() == 5U);
PP_EXPECT(h, bytes[0] == std::byte { 0x10 });
PP_EXPECT(h, bytes[1] == std::byte { 0x20 });
PP_EXPECT(h, bytes[2] == std::byte { 0x30 });
PP_EXPECT(h, bytes[3] == std::byte { 0x20 });
PP_EXPECT(h, bytes[4] == std::byte { 0x30 });
}
}
int main()
@@ -96,5 +116,6 @@ int main()
harness.run("rejects_overread_without_moving_cursor", rejects_overread_without_moving_cursor);
harness.run("rejects_out_of_range_seek", rejects_out_of_range_seek);
harness.run("boundary_reads_are_consistent", boundary_reads_are_consistent);
harness.run("appends_overlapping_source_bytes_deterministically", appends_overlapping_source_bytes_deterministically);
return harness.finish();
}