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c9d6e3ff04
native V8 coverage reports can now be written to disk by setting the variable NODE_V8_COVERAGE=dir PR-URL: https://github.com/nodejs/node/pull/22527 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Yang Guo <yangguo@chromium.org> Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de> Reviewed-By: Evan Lucas <evanlucas@me.com> Reviewed-By: Rod Vagg <rod@vagg.org>
106 lines
4.0 KiB
JavaScript
106 lines
4.0 KiB
JavaScript
'use strict';
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if (!process.config.variables.v8_enable_inspector) return;
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const common = require('../common');
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const assert = require('assert');
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const fs = require('fs');
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const path = require('path');
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const { spawnSync } = require('child_process');
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const tmpdir = require('../common/tmpdir');
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tmpdir.refresh();
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let dirc = 0;
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function nextdir() {
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return `cov_${++dirc}`;
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}
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// outputs coverage when event loop is drained, with no async logic.
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{
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const coverageDirectory = path.join(tmpdir.path, nextdir());
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const output = spawnSync(process.execPath, [
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require.resolve('../fixtures/v8-coverage/basic')
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], { env: { ...process.env, NODE_V8_COVERAGE: coverageDirectory } });
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assert.strictEqual(output.status, 0);
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const fixtureCoverage = getFixtureCoverage('basic.js', coverageDirectory);
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assert.ok(fixtureCoverage);
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// first branch executed.
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assert.strictEqual(fixtureCoverage.functions[1].ranges[0].count, 1);
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// second branch did not execute.
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assert.strictEqual(fixtureCoverage.functions[1].ranges[1].count, 0);
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}
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// outputs coverage when process.exit(1) exits process.
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{
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const coverageDirectory = path.join(tmpdir.path, nextdir());
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const output = spawnSync(process.execPath, [
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require.resolve('../fixtures/v8-coverage/exit-1')
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], { env: { ...process.env, NODE_V8_COVERAGE: coverageDirectory } });
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assert.strictEqual(output.status, 1);
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const fixtureCoverage = getFixtureCoverage('exit-1.js', coverageDirectory);
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assert.ok(fixtureCoverage, 'coverage not found for file');
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// first branch executed.
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assert.strictEqual(fixtureCoverage.functions[1].ranges[0].count, 1);
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// second branch did not execute.
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assert.strictEqual(fixtureCoverage.functions[1].ranges[1].count, 0);
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}
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// outputs coverage when process.kill(process.pid, "SIGINT"); exits process.
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{
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const coverageDirectory = path.join(tmpdir.path, nextdir());
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const output = spawnSync(process.execPath, [
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require.resolve('../fixtures/v8-coverage/sigint')
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], { env: { ...process.env, NODE_V8_COVERAGE: coverageDirectory } });
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if (!common.isWindows) {
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assert.strictEqual(output.signal, 'SIGINT');
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}
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const fixtureCoverage = getFixtureCoverage('sigint.js', coverageDirectory);
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assert.ok(fixtureCoverage);
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// first branch executed.
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assert.strictEqual(fixtureCoverage.functions[1].ranges[0].count, 1);
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// second branch did not execute.
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assert.strictEqual(fixtureCoverage.functions[1].ranges[1].count, 0);
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}
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// outputs coverage from subprocess.
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{
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const coverageDirectory = path.join(tmpdir.path, nextdir());
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const output = spawnSync(process.execPath, [
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require.resolve('../fixtures/v8-coverage/spawn-subprocess')
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], { env: { ...process.env, NODE_V8_COVERAGE: coverageDirectory } });
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assert.strictEqual(output.status, 0);
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const fixtureCoverage = getFixtureCoverage('subprocess.js',
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coverageDirectory);
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assert.ok(fixtureCoverage);
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// first branch executed.
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assert.strictEqual(fixtureCoverage.functions[2].ranges[0].count, 1);
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// second branch did not execute.
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assert.strictEqual(fixtureCoverage.functions[2].ranges[1].count, 0);
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}
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// does not output coverage if NODE_V8_COVERAGE is empty.
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{
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const coverageDirectory = path.join(tmpdir.path, nextdir());
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const output = spawnSync(process.execPath, [
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require.resolve('../fixtures/v8-coverage/spawn-subprocess-no-cov')
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], { env: { ...process.env, NODE_V8_COVERAGE: coverageDirectory } });
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assert.strictEqual(output.status, 0);
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const fixtureCoverage = getFixtureCoverage('subprocess.js',
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coverageDirectory);
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assert.strictEqual(fixtureCoverage, undefined);
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}
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// extracts the coverage object for a given fixture name.
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function getFixtureCoverage(fixtureFile, coverageDirectory) {
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const coverageFiles = fs.readdirSync(coverageDirectory);
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for (const coverageFile of coverageFiles) {
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const coverage = require(path.join(coverageDirectory, coverageFile));
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for (const fixtureCoverage of coverage.result) {
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if (fixtureCoverage.url.indexOf(`${path.sep}${fixtureFile}`) !== -1) {
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return fixtureCoverage;
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}
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}
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}
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}
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