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test: allow leaked global check to be skipped #27239

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test: allow leaked global check to be skipped #27239

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38 changes: 20 additions & 18 deletions test/common/index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -277,34 +277,36 @@ if (global.gc) {
knownGlobals.push(global.gc);
}

if (process.env.NODE_TEST_KNOWN_GLOBALS) {
const knownFromEnv = process.env.NODE_TEST_KNOWN_GLOBALS.split(',');
allowGlobals(...knownFromEnv);
}

function allowGlobals(...whitelist) {
knownGlobals = knownGlobals.concat(whitelist);
}

function leakedGlobals() {
const leaked = [];
if (process.env.NODE_TEST_KNOWN_GLOBALS !== '0') {
if (process.env.NODE_TEST_KNOWN_GLOBALS) {
const knownFromEnv = process.env.NODE_TEST_KNOWN_GLOBALS.split(',');
allowGlobals(...knownFromEnv);
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Shouldn't this be something like:

allowGlobals(...knownFromEnv.map((name) => globalThis[name]));

}

for (const val in global) {
if (!knownGlobals.includes(global[val])) {
leaked.push(val);
function leakedGlobals() {
const leaked = [];

for (const val in global) {
if (!knownGlobals.includes(global[val])) {
leaked.push(val);
}
}

return leaked;
}

return leaked;
process.on('exit', function() {
const leaked = leakedGlobals();
if (leaked.length > 0) {
assert.fail(`Unexpected global(s) found: ${leaked.join(', ')}`);
}
});
}

process.on('exit', function() {
const leaked = leakedGlobals();
if (leaked.length > 0) {
assert.fail(`Unexpected global(s) found: ${leaked.join(', ')}`);
}
});

const mustCallChecks = [];

function runCallChecks(exitCode) {
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11 changes: 11 additions & 0 deletions test/parallel/test-common.js
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Original file line number Diff line number Diff line change
Expand Up @@ -35,6 +35,17 @@ const { execFile } = require('child_process');
}));
}

// Test for disabling leaked global detection
{
const p = fixtures.path('leakedGlobal.js');
execFile(process.execPath, [p], {
env: { ...process.env, NODE_TEST_KNOWN_GLOBALS: 0 }
}, common.mustCall((err, stdout, stderr) => {
assert.strictEqual(err, null);
assert.strictEqual(stderr.trim(), '');
}));
}

// common.mustCall() tests
assert.throws(function() {
common.mustCall(function() {}, 'foo');
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