1
from pathlib import Path
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3
import pytest
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5
 
6
def use(x):
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    pass
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def test_dynlib_loading(tmp_path, monkeypatch):
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    # fmt: off
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    # The data here was produced as follows:
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    #
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    # touch a.c
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    # emcc -c a.c
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    # emcc a.o -o a.so -sSIDE_MODULE
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    # wasm-strip a.so -R target_features
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    # xxd -i a.so
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    #
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    # I used emcc 4.0.9.
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    Path(tmp_path / "a.so").write_bytes(
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        bytes(
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            [
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                0x00, 0x61, 0x73, 0x6d, 0x01, 0x00, 0x00, 0x00, 0x00, 0x0f, 0x08, 0x64,
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                0x79, 0x6c, 0x69, 0x6e, 0x6b, 0x2e, 0x30, 0x01, 0x04, 0x00, 0x00, 0x00,
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                0x00, 0x01, 0x04, 0x01, 0x60, 0x00, 0x00, 0x02, 0x38, 0x03, 0x03, 0x65,
27
                0x6e, 0x76, 0x06, 0x6d, 0x65, 0x6d, 0x6f, 0x72, 0x79, 0x02, 0x00, 0x00,
28
                0x03, 0x65, 0x6e, 0x76, 0x0d, 0x5f, 0x5f, 0x6d, 0x65, 0x6d, 0x6f, 0x72,
29
                0x79, 0x5f, 0x62, 0x61, 0x73, 0x65, 0x03, 0x7f, 0x00, 0x03, 0x65, 0x6e,
30
                0x76, 0x0c, 0x5f, 0x5f, 0x74, 0x61, 0x62, 0x6c, 0x65, 0x5f, 0x62, 0x61,
31
                0x73, 0x65, 0x03, 0x7f, 0x00, 0x03, 0x02, 0x01, 0x00, 0x07, 0x15, 0x01,
32
                0x11, 0x5f, 0x5f, 0x77, 0x61, 0x73, 0x6d, 0x5f, 0x63, 0x61, 0x6c, 0x6c,
33
                0x5f, 0x63, 0x74, 0x6f, 0x72, 0x73, 0x00, 0x00, 0x0a, 0x04, 0x01, 0x02,
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                0x00, 0x0b
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            ]
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        )
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    )
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    # fmt: on
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    monkeypatch.syspath_prepend(tmp_path)
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    with pytest.raises(
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        ImportError, match="Can only load shared libraries from read only file systems"
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    ):
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        import a
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        use(a)