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/**
* Tests generator.
*
* @module
*/
require("colors");
var _ = require("lodash");
var prettyms = require("pretty-ms");
var U = require("glace-utils");
var CONF = require("./config");
var loadSteps = require("./loader").loadSteps;
var Test = require("./test");
var train = require("./train");
/**
* Generates test cases.
*
* @function
* @arg {object} opts - Options.
* @arg {string} [opts.filter] - Chunk of step name to choose tests which
* contain this step.
* @return {object[]} - List of generated tests and unused steps.
*/
exports.generate = opts => {
opts = U.defVal(opts, {});
var filter = U.defVal(opts.filter, CONF.gen.filter);
var startTime = new Date();
console.log("Generating tests from steps...".yellow);
Iif (CONF.gen.pretrain) {
Test.pretrain = U.loadJson(CONF.gen.pretrain);
} else {
Iif (CONF.gen.trainBefore) {
Test.pretrain = train(CONF.gen.trainBefore);
};
}
var steps = loadSteps();
var tests = generateTests(steps);
var unusedSteps = getUnusedSteps(steps, tests);
tests = filterTests(tests, filter);
Iif (CONF.gen.testsMax) {
tests = tests.slice(0, CONF.gen.testsMax);
}
Iif (CONF.gen.testsReverse) {
tests.reverse();
}
console.log(`${tests.length} tests are generated during ${prettyms(new Date() - startTime)}`.yellow);
return [tests, unusedSteps];
};
/**
* Generates tests.
*
* @ignore
* @function
* @arg {Step[]} steps
* @return {Test[]}
*/
var generateTests = steps => {
var tests = [new Test()];
var isStarted = false;
while (!isStarted || changes(tests)) {
isStarted = true;
var tmp = CONF.gen.testsShuffle ? _.shuffle(tests) : tests;
tests = [];
for (var t of tmp) {
var sameTest = true;
Eif (t.steps.length < CONF.gen.stepsLimit) {
for (var s of steps) {
Iif (tests.length >= CONF.gen.testsLimit) break;
if (!t.mayAdd(s)) continue;
var clone = t.clone();
clone.add(s.clone());
tests.push(clone);
sameTest = false;
};
};
Iif (tests.length >= CONF.gen.testsLimit) break;
if (sameTest) {
t.commit();
tests.push(t);
};
};
tests.sort((a, b) => b.weight - a.weight);
tests = filterByUniqSteps(tests);
};
return tests.filter(t => !t.incomplete.length);
};
/**
* Filters tests by unique steps sequence.
*
* @ignore
* @function
* @arg {Test[]} tests
* @return {Test[]}
*/
var filterByUniqSteps = tests => {
var stepsUniq = CONF.gen.stepsUniq;
Iif (stepsUniq) {
var stepNames = [];
var tmp = [];
for (var t of tests) {
if (t.steps.length <= stepsUniq) {
tmp.push(t);
continue;
};
var isPresent = true;
for (var i = 0; i < t.steps.length - stepsUniq + 1; i++) {
var sName = "";
for (var j = 0; j < stepsUniq; j++) {
sName += " " + t.steps[i+j].name;
};
if (!stepNames.includes(sName)) {
stepNames.push(sName);
isPresent = false;
};
};
if (!isPresent) tmp.push(t);
};
tests = tmp;
};
return tests;
};
/**
* Gets unused steps
*
* @ignore
* @function
* @arg {Step[]} steps
* @return {Step[]}
*/
var getUnusedSteps = (steps, tests) => {
var ss = [];
var stepNames = [];
for (var t of tests) {
for (var s of t.steps) {
if (!stepNames.includes(s.name)) {
stepNames.push(s.name);
};
};
};
for (var step of steps) {
Iif (!stepNames.includes(step.name)) {
ss.push(step);
};
};
return ss;
};
/**
* Filters tests
*
* @ignore
* @function
* @arg {Test[]} tests
* @arg {string} filter
* @return {Test[]}
*/
var filterTests = (tests, filter) => {
Eif (!filter) return tests;
var filtered = [];
for (var t of tests) {
var isMatched = false;
for (var s of t.steps) {
if (s.name.includes(filter)) {
isMatched = true;
break;
};
};
if (isMatched) filtered.push(t);
};
return filtered;
};
/**
* Defines whether there are changes in tests or no.
*
* @ignore
* @function
* @arg {Test[]}
* @return {boolean}
*/
var changes = tests => {
for (var t of tests) {
if (t.isChanged) return true;
};
return false;
};
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