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function testRandomFunction(props) { |
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const { randFn, runsPerCycle = 1e5, logProgress = true } = (props || {}); |
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if (typeof randFn !== "function") { |
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throw new TypeError("Random Function `randFn` must be a function in order to test"); |
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} |
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|
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const results = {}, startTime = Date.now(), strEllapsed = '', ret = {}; |
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let stopped = false; |
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function clog(...args) { |
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if (logProgress) { |
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console.log(...args); |
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} |
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} |
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|
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function getElapsedTime(currTime) { |
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const hms = [ |
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[1000,"″","″"],[60,"′","′"],[60,"h","h"] |
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].reduce((a,c,i,w) => [ |
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...a, |
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[w.slice(0,i+1).reduce((_a,_c)=>_a*_c[0],1), ...c.slice(1)] |
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], []).reverse() |
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; |
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return hms |
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.reduce((a,d) => [ |
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[...a[0], a[1] / d[0] | 0], a[1] % d[0], [...a[2], [d[1],d[2]] ] |
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], [[], currTime - startTime, []]) |
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.map((_,i,x) => [x[0][i], x[2][i][0], x[2][i][1] ] ) |
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.reduce( |
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(a,[n,s,p],i,w) => a + ( |
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(i === w.length - 1) ? " " : (i === 0 ? "" : " ") |
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) + n + "" + (n === 1 ? s : p) |
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, "" |
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) |
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; |
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} |
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|
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results.count = {}; |
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results.percent = {}; |
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results.total = 0; |
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|
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ret.results = new Promise((resolve, reject) => { |
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for (let l1 = 0; l1 <= 99; l1++) { |
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clog([ |
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String(l1).padStart(3), "% [", ( |
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"▓".repeat(l1 / 3 | 0) + |
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("_░▒".split(""))[ l1 % 3 ] |
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).padEnd(34, "_"), |
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"] ", |
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getElapsedTime(Date.now()) |
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].join("")); |
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|
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if (stopped) { |
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clog("RandFn Test was stopped"); |
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return reject(results); |
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} |
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|
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for (let l2=0; l2 <= runsPerCycle; l2++) { |
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try { |
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let out = randFn(); |
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if (results.count[out] == null) { |
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results.count[out] = 0; |
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} |
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results.count[out] += 1; |
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results.total += 1; |
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} catch (e) { |
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clog("randFn failed during test, aborting"); |
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console.trace(e); |
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return reject(results); |
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} |
|
|
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if (stopped) { |
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clog("RandFn Test was stopped"); |
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return reject(results); |
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} |
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} |
|
|
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// end for 1 |
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} |
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|
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clog("RandFn test completed! Results of the test:", results); |
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resolve(results); |
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}); |
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|
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ret.stopTest = () => { |
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clog("Requested immediate end of RandFn Test"); |
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stopped = true; |
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}; |
|
|
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Object.entries(results.count).forEach(([key, value]) => { |
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results.percent[key] = Math.round(value / results.total * 1e5) / 1e3; |
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}) |
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|
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clog(`100% [${'▓'.repeat(34)}] ${strEllapsed}`); |
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return ret; |
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} |
