test/wasm.js


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#! /usr/bin/env node

const execFile = require('child_process').execFile
    , load=f=>require('fs').readFileSync(__dirname+'/'+f,'utf8')
    , runWasm=w=>new WebAssembly.Instance(new WebAssembly.Module(Uint8Array.from(w)))
                 .exports.fn()

const t=load('cases/simple.bqn').split('\n').filter(x=>x).map(x=>x.split(' % '))
    , test=t.map(e=> e[1])
    , expt=t.map(e=>+e[0])

var compiler = execFile(
  __dirname+'/../wc.bqn',
  test,
  function (error, stdout, stderr) {
    const rslt=stdout.split('\n').filter(a=>a.length)
              .map(a=>runWasm(a.split(" ").map(n=>+n)))
        , pass=expt.map((e,i)=>e===rslt[i])
        , fail=pass.map((p,i)=>p?-1:i).filter(i=>i>=0)
    console.log(
        fail.length
        ? fail.map(i=>'"'+t[i][1]+'": expected '+expt[i]+' but received '+rslt[i])
        : "All passed!"
    )
    process.exit(+(fail.length>0))
  }
);