test: Make N-API weak-ref GC tests asynchronous #13121

jasongin · 2017-05-19T19:47:49Z

One of the N-API weak-reference test cases already had to be made asynchronous to handle different behavior in a newer V8 version. (0a734fe) When porting N-API to Node-ChakraCore, we found more of the test cases needed similar treatment. (nodejs/node-chakracore#246) So to make thes tests more robust (and avoid having differences in the test code for Node-ChakraCore), I am refactoring the tests in this file to insert a setImmedate() callback before every call to gc() and assertions about the effects of the GC.

Checklist

make -j4 test (UNIX), or vcbuild test (Windows) passes
tests and/or benchmarks are included
commit message follows commit guidelines

Affected core subsystem(s)

test

jasongin · 2017-05-19T19:48:18Z

@targos @mhdawson Please review.

mhdawson · 2017-05-19T21:11:41Z

test/addons-napi/test_reference/test.js

-  value = null;
-  global.gc(); // Value should NOT be GC'd because there is a strong ref
-  assert.strictEqual(test_reference.finalizeCount, 0);
+  'External value without a finalizer',


Would it be better to make it an array of objects instead of doing the string check for the title ?
ex
{ title: 'External value without a finalizer', steps: [() => {...}, () => {...}, etc ]}

That would work too, but would be more complicated to do the nested iteration recursively. I didn't see a need to over-design this just for these few tests. I can do it if you want. :)

I was thinking it would actually be easier/less code, but if you don't think that's the case I don't want to hold up getting this landed. I may take a look/PR later on when I have time if what I was thinking can simply, if not then I'll leave it be.

- Make GC tests (arraybuffer, buffer) async, to account for different GC behavior with different versions of V8 and ChakraCore, similar to nodejs/node#13121 - In test/index.js, use the --napi-modules and --expose-gc command-line flags automatically

- Make GC tests (arraybuffer, buffer, external) async, to account for different GC behavior with different versions of V8 and ChakraCore, similar to nodejs/node#13121 - In test/index.js, use the --napi-modules and --expose-gc command-line flags automatically

- Make GC tests (arraybuffer, buffer, external) async, to account for different GC behavior with different versions of V8 and ChakraCore, similar to nodejs/node#13121 - In test/index.js, use the --napi-modules and --expose-gc command-line flags automatically. - Add missing entry for object tests in index.js. - Remove check for writable attribute on accessor property descriptors; it should not be there according to the JS spec. - Remove the explicit dependency on node-gyp in package.json. (NPM carries its own copy of node-gyp.)

cjihrig · 2017-05-22T14:21:08Z

test/addons-napi/test_reference/test.js

+      title = tests[i];
+      runTests(i + 1, title, tests);
+    } else {
+      try {


Couldn't you replace the try...catch, throw, and console.error() call with a call to assert.doesNotThrow()?

That could work, except assert.doesNotThrow() loses the stack trace of the original exception; it only displays the message. So I prefer not to use it except when checking for a very specific exceptional condition. In this case, the original exception stack trace is likely to point to a line number of another assertion in the file, so that's very helpful information.

- Make GC tests (arraybuffer, buffer, external) async, to account for different GC behavior with different versions of V8 and ChakraCore, similar to nodejs/node#13121 - In test/index.js, use the --napi-modules and --expose-gc command-line flags automatically. - Add missing entry for object tests in index.js. - Remove check for writable attribute on accessor property descriptors; it should not be there according to the JS spec. - Remove the explicit dependency on node-gyp in package.json. (NPM carries its own copy of node-gyp.)

- Make GC tests (arraybuffer, buffer, external) async, to account for different GC behavior with different versions of V8 and ChakraCore, similar to nodejs/node#13121 - In test/index.js, use the --napi-modules and --expose-gc command-line flags automatically. - Add missing entry for object tests in index.js. - Remove check for writable attribute on accessor property descriptors; it should not be there according to the JS spec. - Remove the explicit dependency on node-gyp in package.json. (NPM carries its own copy of node-gyp.) - Fix improper rethrow of an Error caught by reference that caused a double napi_ref delete, which failed in release builds of Node-ChakraCore.

jasongin · 2017-05-24T17:00:04Z

@cjihrig @mhdawson Do you think changes are needed or is this good?

jasongin · 2017-05-24T17:34:57Z

CI: https://ci.nodejs.org/job/node-test-pull-request/8285/

Review dismissed

mhdawson

LGTM

One of the N-API weak-reference test cases already had to be made asynchronous to handle different behavior in a newer V8 version: nodejs#12864 When porting N-API to Node-ChakraCore, we found more of the test cases needed similar treatment: nodejs/node-chakracore#246 So to make thes tests more robust (and avoid having differences in the test code for Node-ChakraCore), I am refactoring the tests in this file to insert a `setImmedate()` callback before every call to `gc()` and assertions about the effects of the GC. PR-URL: nodejs#13121 Reviewed-By: Michael Dawson <[email protected]>

jasongin · 2017-05-30T19:59:31Z

Landed as bb91879

One of the N-API weak-reference test cases already had to be made asynchronous to handle different behavior in a newer V8 version: #12864 When porting N-API to Node-ChakraCore, we found more of the test cases needed similar treatment: nodejs/node-chakracore#246 So to make thes tests more robust (and avoid having differences in the test code for Node-ChakraCore), I am refactoring the tests in this file to insert a `setImmedate()` callback before every call to `gc()` and assertions about the effects of the GC. PR-URL: #13121 Reviewed-By: Michael Dawson <[email protected]>

Fixed by upstream PR nodejs/node#13121 Resolves nodejs#246

Fixed by upstream PR nodejs/node#13121 Resolves nodejs#246 PR-URL: nodejs#301 Reviewed-By: Kunal Pathak <[email protected]> Reviewed-By: Jason Ginchereau <[email protected]>

One of the N-API weak-reference test cases already had to be made asynchronous to handle different behavior in a newer V8 version: nodejs#12864 When porting N-API to Node-ChakraCore, we found more of the test cases needed similar treatment: nodejs/node-chakracore#246 So to make thes tests more robust (and avoid having differences in the test code for Node-ChakraCore), I am refactoring the tests in this file to insert a `setImmedate()` callback before every call to `gc()` and assertions about the effects of the GC. PR-URL: nodejs#13121 Reviewed-By: Michael Dawson <[email protected]>

One of the N-API weak-reference test cases already had to be made asynchronous to handle different behavior in a newer V8 version: #12864 When porting N-API to Node-ChakraCore, we found more of the test cases needed similar treatment: nodejs/node-chakracore#246 So to make thes tests more robust (and avoid having differences in the test code for Node-ChakraCore), I am refactoring the tests in this file to insert a `setImmedate()` callback before every call to `gc()` and assertions about the effects of the GC. Backport-PR-URL: #19447 PR-URL: #13121 Reviewed-By: Michael Dawson <[email protected]>

- Make GC tests (arraybuffer, buffer, external) async, to account for different GC behavior with different versions of V8 and ChakraCore, similar to nodejs/node#13121 - In test/index.js, use the --napi-modules and --expose-gc command-line flags automatically. - Add missing entry for object tests in index.js. - Remove check for writable attribute on accessor property descriptors; it should not be there according to the JS spec. - Remove the explicit dependency on node-gyp in package.json. (NPM carries its own copy of node-gyp.) - Fix improper rethrow of an Error caught by reference that caused a double napi_ref delete, which failed in release builds of Node-ChakraCore.

nodejs-github-bot added node-api Issues and PRs related to the Node-API. test Issues and PRs related to the tests. labels May 19, 2017

mhdawson reviewed May 19, 2017

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digitalinfinity approved these changes May 20, 2017

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jasongin mentioned this pull request May 20, 2017

Make tests work on all Node versions nodejs/node-addon-api#44

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cjihrig previously requested changes May 22, 2017

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addaleax added dont-land-on-v4.x labels May 23, 2017

mhdawson approved these changes May 24, 2017

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digitalinfinity approved these changes May 30, 2017

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jasongin force-pushed the reference_test_gc branch from 6334a1b to bb91879 Compare May 30, 2017 19:58

jasongin closed this May 30, 2017

jasongin merged commit bb91879 into nodejs:master May 30, 2017

jasongin deleted the reference_test_gc branch May 30, 2017 20:00

jasnell mentioned this pull request Jun 5, 2017

8.1.0 Proposal #13483

Closed

kfarnung added a commit to kfarnung/node-chakracore that referenced this pull request Jun 15, 2017

test: enable addons-napi/test_reference

9d981c7

Fixed by upstream PR nodejs/node#13121 Resolves nodejs#246

kfarnung mentioned this pull request Jun 15, 2017

test: enable addons-napi/test_reference nodejs/node-chakracore#301

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2 tasks

targos mentioned this pull request Aug 29, 2017

test: fix tests after V8 6.0 GC changes TooTallNate/ref#85

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MylesBorins mentioned this pull request Apr 16, 2018

v6.14.2 proposal #19996

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test: Make N-API weak-ref GC tests asynchronous #13121

test: Make N-API weak-ref GC tests asynchronous #13121

jasongin commented May 19, 2017

jasongin commented May 19, 2017

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jasongin commented May 30, 2017

test: Make N-API weak-ref GC tests asynchronous #13121

test: Make N-API weak-ref GC tests asynchronous #13121

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jasongin commented May 19, 2017

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