wasmi_core 2.0.0-beta.1

Core primitives for the wasmi WebAssembly interpreter
Documentation 
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use super::*;

fn memory_type(minimum: u32, maximum: impl Into<Option<u32>>) -> MemoryType {
    let mut b = MemoryType::builder();
    b.min(u64::from(minimum));
    b.max(maximum.into().map(u64::from));
    b.build().unwrap()
}

#[test]
fn subtyping_works() {
    assert!(memory_type(0, 1).is_subtype_of(&memory_type(0, 1)));
    assert!(memory_type(0, 1).is_subtype_of(&memory_type(0, 2)));
    assert!(!memory_type(0, 2).is_subtype_of(&memory_type(0, 1)));
    assert!(memory_type(2, None).is_subtype_of(&memory_type(1, None)));
    assert!(memory_type(0, None).is_subtype_of(&memory_type(0, None)));
    assert!(memory_type(0, 1).is_subtype_of(&memory_type(0, None)));
    assert!(!memory_type(0, None).is_subtype_of(&memory_type(0, 1)));
}