walt-compiler/src/__tests__/assignment-spec.js

Alternative syntax for WebAssembly text format

import test from 'ava';
import { compileAndRun } from '../utils/test-utils';

const outputIs = (t, value) => result =>
  t.is(result.instance.exports.test(), value);

test('declration assignment', t =>
  compileAndRun(
    'export function test(): i32 { let x: i32 = 2; return x; }'
  ).then(outputIs(t, 2)));
test('assigment statement', t =>
  compileAndRun(`
  export function test(): i32 {
    let x: i32 = 0;
    let y: i32 = 2;
    x = y + 2;
    return x;
  }`).then(outputIs(t, 4)));