def test_fixedlengthvalue(self):
        class TT(base.FixedLengthValue):
            preamble = "m"
            length = 4

        e = TT.expr()
        assert e.parseString("m@4")
        with pytest.raises("invalid value length"):
            e.parseString("m@100")
        with pytest.raises("invalid value length"):
            e.parseString("m@1")

        with tutils.tmpdir() as t:
            p = os.path.join(t, "path")
            s = base.Settings(staticdir=t)
            with open(p, "wb") as f:
                f.write(b"a" * 20)
            v = e.parseString("m<path")[0]
            with pytest.raises("invalid value length"):
                v.values(s)

            p = os.path.join(t, "path")
            with open(p, "wb") as f:
                f.write(b"a" * 4)
            v = e.parseString("m<path")[0]
            assert v.values(s)
Beispiel #2
0
    def test_fixedlengthvalue(self, tmpdir):
        class TT(base.FixedLengthValue):
            preamble = "m"
            length = 4

        e = TT.expr()
        assert e.parseString("m@4")
        with pytest.raises(Exception, match="Invalid value length"):
            e.parseString("m@100")
        with pytest.raises(Exception, match="Invalid value length"):
            e.parseString("m@1")

        s = base.Settings(staticdir=str(tmpdir))
        tmpdir.join("path").write_binary(b"a" * 20, ensure=True)
        v = e.parseString("m<path")[0]
        with pytest.raises(Exception, match="Invalid value length"):
            v.values(s)

        tmpdir.join("path2").write_binary(b"a" * 4, ensure=True)
        v = e.parseString("m<path2")[0]
        assert v.values(s)