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'use strict';
var mockfs = require('./mockfs');
var mbgl = require('../index');
var test = require('tape');
var testParams = {
mapPoolSize: 10,
numRenderings: 100,
heapGrowthThreshold: 0,
ratio: 2
};
test('Memory', function(t) {
// Trigger garbage collection before starting test, then initialize
// heap size
if (typeof gc === 'function') gc();
var lastHeapSize = process.memoryUsage()['heapUsed'];
var options = {
request: function(req, callback) {
callback(null, { data: mockfs.dataForRequest(req) });
},
ratio: testParams.ratio,
};
var mapPool = []
for (var i = 0; i < testParams.mapPoolSize; ++i) {
var map = new mbgl.Map(options);
mapPool.push(map);
}
var renderCount = 0;
var heapGrowth = 0;
var interval = setInterval(function () {
if (mapPool.length == 0) {
return;
}
var map = mapPool.shift();
if (Math.floor(Math.random() * 2)) {
map.load(mockfs.style_raster);
} else {
map.load(mockfs.style_vector);
}
map.render({ zoom: 16 }, function(err, pixels) {
mapPool.push(map);
if (renderCount % (testParams.numRenderings / 10) == 0) {
// Manually trigger garbage collection
if (typeof gc === 'function') gc();
var currentHeapSize = process.memoryUsage()['heapUsed'];
// Print some progress, so slow build bots don't timeout.
t.comment("Rendering (" + renderCount.toString() +
"/" + testParams.numRenderings.toString() + ")");
heapGrowth = heapGrowth + currentHeapSize - lastHeapSize;
lastHeapSize = currentHeapSize;
}
if (++renderCount == testParams.numRenderings) {
t.ok(heapGrowth < testParams.heapGrowthThreshold, heapGrowth);
t.end();
clearInterval(interval);
}
});
}, 1);
});
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