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test: whitelist the expected modules in test-bootstrap-modules.js
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Be explicit on the modules that are expected to be loaded and add an
appropriate assertion failure message to help debug when the list
changes.

Fixes: #23884

PR-URL: #26531
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Sam Roberts <vieuxtech@gmail.com>
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@richardlau @targos
richardlau authored and targos committed Mar 27, 2019
1 parent 9092e12 commit 892282d
Showing 1 changed file with 123 additions and 7 deletions.
130 changes: 123 additions & 7 deletions test/parallel/test-bootstrap-modules.js
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Original file line number Diff line number Diff line change
Expand Up @@ -3,15 +3,131 @@

// This list must be computed before we require any modules to
// to eliminate the noise.
const list = process.moduleLoadList.slice();
const actualModules = new Set(process.moduleLoadList.slice());

const common = require('../common');
const assert = require('assert');

const isMainThread = common.isMainThread;
const kCoverageModuleCount = process.env.NODE_V8_COVERAGE ? 1 : 0;
const kMaxModuleCount = (isMainThread ? 65 : 88) + kCoverageModuleCount;
const expectedModules = new Set([
'Internal Binding async_wrap',
'Internal Binding buffer',
'Internal Binding config',
'Internal Binding constants',
'Internal Binding contextify',
'Internal Binding credentials',
'Internal Binding fs',
'Internal Binding inspector',
'Internal Binding messaging',
'Internal Binding module_wrap',
'Internal Binding native_module',
'Internal Binding options',
'Internal Binding process_methods',
'Internal Binding task_queue',
'Internal Binding timers',
'Internal Binding trace_events',
'Internal Binding types',
'Internal Binding url',
'Internal Binding util',
'NativeModule buffer',
'NativeModule events',
'NativeModule fs',
'NativeModule internal/assert',
'NativeModule internal/async_hooks',
'NativeModule internal/bootstrap/pre_execution',
'NativeModule internal/buffer',
'NativeModule internal/console/constructor',
'NativeModule internal/console/global',
'NativeModule internal/constants',
'NativeModule internal/domexception',
'NativeModule internal/encoding',
'NativeModule internal/errors',
'NativeModule internal/fixed_queue',
'NativeModule internal/fs/utils',
'NativeModule internal/idna',
'NativeModule internal/linkedlist',
'NativeModule internal/modules/cjs/helpers',
'NativeModule internal/modules/cjs/loader',
'NativeModule internal/options',
'NativeModule internal/priority_queue',
'NativeModule internal/process/execution',
'NativeModule internal/process/next_tick',
'NativeModule internal/process/per_thread',
'NativeModule internal/process/promises',
'NativeModule internal/process/warning',
'NativeModule internal/querystring',
'NativeModule internal/timers',
'NativeModule internal/url',
'NativeModule internal/util',
'NativeModule internal/util/debuglog',
'NativeModule internal/util/inspect',
'NativeModule internal/util/types',
'NativeModule internal/validators',
'NativeModule path',
'NativeModule timers',
'NativeModule url',
'NativeModule util',
'NativeModule vm',
]);

assert(list.length <= kMaxModuleCount,
`Total length: ${list.length}\n` + list.join('\n')
);
if (common.isMainThread) {
expectedModules.add('NativeModule internal/process/main_thread_only');
expectedModules.add('NativeModule internal/process/stdio');
} else {
expectedModules.add('Internal Binding heap_utils');
expectedModules.add('Internal Binding serdes');
expectedModules.add('Internal Binding stream_wrap');
expectedModules.add('Internal Binding symbols');
expectedModules.add('Internal Binding uv');
expectedModules.add('Internal Binding v8');
expectedModules.add('Internal Binding worker');
expectedModules.add('NativeModule _stream_duplex');
expectedModules.add('NativeModule _stream_passthrough');
expectedModules.add('NativeModule _stream_readable');
expectedModules.add('NativeModule _stream_transform');
expectedModules.add('NativeModule _stream_writable');
expectedModules.add('NativeModule internal/error-serdes');
expectedModules.add('NativeModule internal/process/worker_thread_only');
expectedModules.add('NativeModule internal/stream_base_commons');
expectedModules.add('NativeModule internal/streams/buffer_list');
expectedModules.add('NativeModule internal/streams/destroy');
expectedModules.add('NativeModule internal/streams/end-of-stream');
expectedModules.add('NativeModule internal/streams/legacy');
expectedModules.add('NativeModule internal/streams/pipeline');
expectedModules.add('NativeModule internal/streams/state');
expectedModules.add('NativeModule internal/worker');
expectedModules.add('NativeModule internal/worker/io');
expectedModules.add('NativeModule module');
expectedModules.add('NativeModule stream');
expectedModules.add('NativeModule v8');
expectedModules.add('NativeModule worker_threads');
}

if (common.hasIntl) {
expectedModules.add('Internal Binding icu');
} else {
expectedModules.add('NativeModule punycode');
}

if (process.features.inspector) {
expectedModules.add('NativeModule internal/inspector_async_hook');
expectedModules.add('NativeModule internal/util/inspector');
}

if (process.env.NODE_V8_COVERAGE) {
expectedModules.add('NativeModule internal/profiler');
}

const difference = (setA, setB) => {
return new Set([...setA].filter((x) => !setB.has(x)));
};
const missingModules = difference(expectedModules, actualModules);
const extraModules = difference(actualModules, expectedModules);
const printSet = (s) => { return `${[...s].sort().join(',\n ')}\n`; };

assert.deepStrictEqual(actualModules, expectedModules,
(missingModules.size > 0 ?
'These modules were not loaded:\n ' +
printSet(missingModules) : '') +
(extraModules.size > 0 ?
'These modules were unexpectedly loaded:\n ' +
printSet(extraModules) : ''));

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