wasmi 0.38.0

WebAssembly interpreter
Documentation 
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use super::*;
use crate::core::TrapCode;

const WASM_OP: WasmOp = WasmOp::binary(WasmType::I32, "div_u");

#[test]
#[cfg_attr(miri, ignore)]
fn same_reg() {
    // Note: we cannot optimize for `x / x` since `x == 0` has to trap.
    let expected = [
        Instruction::i32_div_u(Reg::from(1), Reg::from(0), Reg::from(0)),
        Instruction::return_reg(Reg::from(1)),
    ];
    test_binary_same_reg(WASM_OP, expected)
}

#[test]
#[cfg_attr(miri, ignore)]
fn reg_reg() {
    test_binary_reg_reg(WASM_OP, Instruction::i32_div_u)
}

#[test]
#[cfg_attr(miri, ignore)]
fn reg_imm16_rhs() {
    test_binary_reg_imm16_rhs::<NonZeroU32>(
        WASM_OP,
        nonzero_u32(100),
        Instruction::i32_div_u_imm16_rhs,
    )
}

#[test]
#[cfg_attr(miri, ignore)]
fn reg_imm16_lhs() {
    test_binary_reg_imm16_lhs::<u32>(WASM_OP, 100, Instruction::i32_div_u_imm16_lhs)
}

#[test]
#[cfg_attr(miri, ignore)]
fn reg_imm() {
    test_binary_reg_imm32(WASM_OP, i32::MAX, Instruction::i32_div_u)
}

#[test]
#[cfg_attr(miri, ignore)]
fn reg_imm_lhs() {
    test_binary_reg_imm32_lhs(WASM_OP, i32::MAX, Instruction::i32_div_u)
}

#[test]
#[cfg_attr(miri, ignore)]
fn reg_zero() {
    let expected = [Instruction::trap(TrapCode::IntegerDivisionByZero)];
    test_binary_reg_imm_with(WASM_OP, 0_i32, expected).run()
}

#[test]
#[cfg_attr(miri, ignore)]
fn reg_one() {
    let expected = [Instruction::return_reg(0)];
    test_binary_reg_imm_with(WASM_OP, 1_i32, expected).run()
}

#[test]
#[cfg_attr(miri, ignore)]
fn consteval() {
    let lhs = 4;
    let rhs = 2;
    test_binary_consteval(
        WASM_OP,
        lhs,
        rhs,
        [Instruction::ReturnImm32 {
            value: AnyConst32::from(lhs / rhs),
        }],
    )
}

#[test]
#[cfg_attr(miri, ignore)]
fn consteval_div_by_zero() {
    let lhs = 4;
    let rhs = 0;
    test_binary_consteval(
        WASM_OP,
        lhs,
        rhs,
        [Instruction::trap(TrapCode::IntegerDivisionByZero)],
    )
}