var assert = require("assert");

var garbageCollect = require("./garbage_collect");

function leakTest(Type, getInstance) {

garbageCollect();

var startSelfFreeingCount = Type.getSelfFreeingInstanceCount();

var startNonSelfFreeingCount = Type.getNonSelfFreeingConstructedCount();

var resolve;

var promise = new Promise(function(_resolve) { resolve = _resolve; });

getInstance()

.then(function() {

var selfFreeingCount = Type.getSelfFreeingInstanceCount();

assert.equal(startSelfFreeingCount + 1, selfFreeingCount);

// get out of this promise chain to help GC get rid of the commit

setTimeout(resolve, 0);

});

return promise

.then(function() {

garbageCollect();

var endSelfFreeingCount = Type.getSelfFreeingInstanceCount();

var endNonSelfFreeingCount = Type.getNonSelfFreeingConstructedCount();

// any new self-freeing commits should have been freed

assert.equal(startSelfFreeingCount, endSelfFreeingCount);

// no new non-self-freeing commits should have been constructed

assert.equal(startNonSelfFreeingCount, endNonSelfFreeingCount);

});

}

module.exports = leakTest;