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'use strict';
if (!process.features.inspector) return;
require('../common');
const fixtures = require('../common/fixtures');
const tmpdir = require('../common/tmpdir');
const assert = require('assert');
const fs = require('fs');
const path = require('path');
const { spawnSync } = require('child_process');
tmpdir.refresh();
const intervals = 40;
// Outputs coverage when v8.takeCoverage() is invoked.
{
const output = spawnSync(process.execPath, [
'-r',
fixtures.path('v8-coverage', 'take-coverage'),
fixtures.path('v8-coverage', 'interval'),
], {
env: {
...process.env,
NODE_V8_COVERAGE: tmpdir.path,
NODE_DEBUG_NATIVE: 'INSPECTOR_PROFILER',
TEST_INTERVALS: intervals
},
});
console.log(output.stderr.toString());
assert.strictEqual(output.status, 0);
const coverageFiles = fs.readdirSync(tmpdir.path);
let coverages = [];
for (const coverageFile of coverageFiles) {
const coverage = require(path.join(tmpdir.path, coverageFile));
for (const result of coverage.result) {
if (result.url.includes('/interval')) {
coverages.push({
file: coverageFile,
func: result.functions.find((f) => f.functionName === 'interval'),
timestamp: coverage.timestamp
});
}
}
}
coverages = coverages.sort((a, b) => { return a.timestamp - b.timestamp; });
// There should be two coverages taken, one triggered by v8.takeCoverage(),
// the other by process exit.
console.log('Coverages:', coverages);
assert.strictEqual(coverages.length, 3);
let blockHitsTotal = 0;
for (let i = 0; i < coverages.length; ++i) {
const { ranges } = coverages[i].func;
console.log('coverage', i, ranges);
if (i !== coverages.length - 1) {
// When the first two coverages are taken:
assert.strictEqual(ranges.length, 2);
const blockHits = ranges[0].count;
// The block inside interval() should be hit at least once.
assert.notStrictEqual(blockHits, 0);
blockHitsTotal += blockHits;
// The else branch should not be hit.
const elseBranchHits = ranges[1].count;
assert.strictEqual(elseBranchHits, 0);
} else {
// At process exit:
assert.strictEqual(ranges.length, 3);
const blockHits = ranges[0].count;
// The block inside interval() should be hit at least once more.
assert.notStrictEqual(blockHits, 0);
blockHitsTotal += blockHits;
// The else branch should be hit exactly once.
const elseBranchHits = ranges[2].count;
assert.strictEqual(elseBranchHits, 1);
const ifBranchHits = ranges[1].count;
assert.strictEqual(ifBranchHits, blockHits - elseBranchHits);
}
}
// The block should be hit `intervals` times in total.
assert.strictEqual(blockHitsTotal, intervals);
}
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