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pub(crate) struct FakePRNG<'a> {
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    bytes: &'a [u8],
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}
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impl<'a> FakePRNG<'a> {
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    pub(crate) fn new(bytes: &'a [u8]) -> Self {
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        Self { bytes }
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    }
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}
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impl<'a> rand_core::RngCore for FakePRNG<'a> {
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    fn next_u32(&mut self) -> u32 {
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        rand_core::impls::next_u32_via_fill(self)
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    }
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    fn next_u64(&mut self) -> u64 {
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        rand_core::impls::next_u64_via_fill(self)
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    }
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    fn fill_bytes(&mut self, dest: &mut [u8]) {
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        assert!(dest.len() <= self.bytes.len());
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        dest.copy_from_slice(&self.bytes[0..dest.len()]);

            

        

            

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        self.bytes = &self.bytes[dest.len()..];

            

        

            

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    }

            

        

            

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}

            

        

            

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impl rand_core::CryptoRng for FakePRNG<'_> {}