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Versions: 31
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Stored size: 1.5 KB
Contents
require("../env");
require("../../d3");
var vows = require("vows"),
assert = require("assert");
var suite = vows.describe("d3.timer");
suite.addBatch({
"timer": {
topic: function() {
return d3.timer;
},
"with no delay": {
topic: timer(),
"first calls after 17 ms or less": function(info) {
assert.inDelta(info.start - info.scheduled, 17, 20);
},
"calls until the function returns true": function(info) {
assert.equal(info.count, 4);
},
"calls every 17 ms": function(info) {
assert.inDelta(info.stop - info.start, 17 * 3, 20);
}
},
"with a specified delay": {
topic: timer(250),
"first calls after the delay": function(info) {
assert.inDelta(info.start - info.scheduled, 250, 20);
},
"calls until the function returns true": function(info) {
assert.equal(info.count, 4);
},
"calls every 17 ms": function(info) {
assert.inDelta(info.stop - info.start, 17 * 3, 20);
}
}
}
});
function timer(delay) {
var args = Array.prototype.slice.call(arguments);
return function() {
var cb = this.callback,
info = {scheduled: Date.now(), count: 0};
args.unshift(function() {
var count = ++info.count;
if (count === 1) {
info.start = Date.now();
} else if (count === 4) {
info.stop = Date.now();
cb(null, info);
return true;
}
});
d3.timer.apply(this, args);
};
}
suite.export(module);
Version data entries
31 entries across 31 versions & 2 rubygems