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fix: fix running tests in IE9 #3668
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So the symptom is that after Karma page is loaded in IE9 the tests don't run and Karma is stuck at the "starting" step. Reloading the page once or twice makes IE9 connect to the server and tests pass successfully. After an "exciting" debugging session I figured out that the problem is that on the first load (and sometimes after the page reload) [`io` variable](https://github.com/karma-runner/karma/blob/026fff870913fb6cd2858dd962935dc74c92b725/client/main.js#L14), which should be set by the `socket.io.js` script is undefined. It looks like IE9 silently stops executing `socket.io.js` script somewhere midway and switches to the next script causing the `io` variable to be undefined. I assume it hits some limit or threshold or whatnot. Couldn't find much information on the Internet, besides people experiencing similar issues when loading e.g. unminified jQuery and their own code firing before the `$` variable is available. No good solutions found. Checking the `socket.io.js` contents, I have noticed that v2 served the minified client script on that path, while v3 now serves the unminified code. Presumably the huge script size is what causing IE9 to choke. Switching back to the minified socket.io client bundle allows tests to pass in IE9. With the fix, tests passed 5 times in a row, while without it they fail every time, so I assume it does resolve the problem. Fixes karma-runner#3665
✅ Build karma 569 completed (commit f7d1d1e982 by @devoto13) |
✅ Build karma 568 completed (commit f7d1d1e982 by @devoto13) |
✅ Build karma 570 completed (commit b70cec5e82 by @devoto13) |
✅ Build karma 569 completed (commit b70cec5e82 by @devoto13) |
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Oh! Based on the fails we saw I thought this was some use of an ES feature by socket-io that IE9 did not support. Good work!
## [6.3.2](v6.3.1...v6.3.2) (2021-03-29) ### Bug Fixes * fix running tests in IE9 ([#3668](#3668)) ([0055bc5](0055bc5)), closes [/github.com/karma-runner/karma/blob/026fff870913fb6cd2858dd962935dc74c92b725/client/main.js#L14](https://github.com//github.com/karma-runner/karma/blob/026fff870913fb6cd2858dd962935dc74c92b725/client/main.js/issues/L14) [#3665](#3665)
🎉 This PR is included in version 6.3.2 🎉 The release is available on: Your semantic-release bot 📦🚀 |
How did you debug IE? |
@jginsburgn I logged in to the https://browserstack.com used by Karma, got my user name and access key under ACCESS KEY. Then I added something like below at the top of the
Then I ran |
Thanks for that! I need to get up to speed on this in order to be better prepared for debugging IE issues that might happen. |
This PR contains the following updates: | Package | Type | Update | Change | |---|---|---|---| | [karma](https://karma-runner.github.io/) ([source](https://github.com/karma-runner/karma)) | devDependencies | minor | [`6.3.20` -> `6.4.0`](https://renovatebot.com/diffs/npm/karma/6.3.20/6.4.0) | --- ### Release Notes <details> <summary>karma-runner/karma</summary> ### [`v6.4.0`](https://github.com/karma-runner/karma/blob/HEAD/CHANGELOG.md#​640-httpsgithubcomkarma-runnerkarmacomparev6320v640-2022-06-14) [Compare Source](karma-runner/karma@v6.3.20...v6.4.0) ##### Features - support SRI verification of link tags ([dc51a2e](karma-runner/karma@dc51a2e)) - support SRI verification of script tags ([6a54b1c](karma-runner/karma@6a54b1c)) #### [6.3.20](karma-runner/karma@v6.3.19...v6.3.20) (2022-05-13) ##### Bug Fixes - prefer IPv4 addresses when resolving domains ([e17698f](karma-runner/karma@e17698f)), closes [#​3730](karma-runner/karma#3730) #### [6.3.19](karma-runner/karma@v6.3.18...v6.3.19) (2022-04-19) ##### Bug Fixes - **client:** error out when opening a new tab fails ([099b85e](karma-runner/karma@099b85e)) #### [6.3.18](karma-runner/karma@v6.3.17...v6.3.18) (2022-04-13) ##### Bug Fixes - **deps:** upgrade socket.io to v4.4.1 ([52a30bb](karma-runner/karma@52a30bb)) #### [6.3.17](karma-runner/karma@v6.3.16...v6.3.17) (2022-02-28) ##### Bug Fixes - **deps:** update colors to maintained version ([#​3763](karma-runner/karma#3763)) ([fca1884](karma-runner/karma@fca1884)) #### [6.3.16](karma-runner/karma@v6.3.15...v6.3.16) (2022-02-10) ##### Bug Fixes - **security:** mitigate the "Open Redirect Vulnerability" ([ff7edbb](karma-runner/karma@ff7edbb)) #### [6.3.15](karma-runner/karma@v6.3.14...v6.3.15) (2022-02-05) ##### Bug Fixes - **helper:** make mkdirIfNotExists helper resilient to concurrent calls ([d9dade2](karma-runner/karma@d9dade2)), closes [/github.com/karma-runner/karma-coverage/issues/434#issuecomment-1017939333](https://github.com//github.com/karma-runner/karma-coverage/issues/434/issues/issuecomment-1017939333) #### [6.3.14](karma-runner/karma@v6.3.13...v6.3.14) (2022-02-05) ##### Bug Fixes - remove string template from client code ([91d5acd](karma-runner/karma@91d5acd)) - warn when `singleRun` and `autoWatch` are `false` ([69cfc76](karma-runner/karma@69cfc76)) - **security:** remove XSS vulnerability in `returnUrl` query param ([839578c](karma-runner/karma@839578c)) #### [6.3.13](karma-runner/karma@v6.3.12...v6.3.13) (2022-01-31) ##### Bug Fixes - **deps:** bump log4js to resolve security issue ([5bf2df3](karma-runner/karma@5bf2df3)), closes [#​3751](karma-runner/karma#3751) #### [6.3.12](karma-runner/karma@v6.3.11...v6.3.12) (2022-01-24) ##### Bug Fixes - remove depreciation warning from log4js ([41bed33](karma-runner/karma@41bed33)) #### [6.3.11](karma-runner/karma@v6.3.10...v6.3.11) (2022-01-13) ##### Bug Fixes - **deps:** pin colors package to 1.4.0 due to security vulnerability ([a5219c5](karma-runner/karma@a5219c5)) #### [6.3.10](karma-runner/karma@v6.3.9...v6.3.10) (2022-01-08) ##### Bug Fixes - **logger:** create parent folders if they are missing ([0d24bd9](karma-runner/karma@0d24bd9)), closes [#​3734](karma-runner/karma#3734) #### [6.3.9](karma-runner/karma@v6.3.8...v6.3.9) (2021-11-16) ##### Bug Fixes - restartOnFileChange option not restarting the test run ([92ffe60](karma-runner/karma@92ffe60)), closes [#​27](karma-runner/karma#27) [#​3724](karma-runner/karma#3724) #### [6.3.8](karma-runner/karma@v6.3.7...v6.3.8) (2021-11-07) ##### Bug Fixes - **reporter:** warning if stack trace contains generated code invocation ([4f23b14](karma-runner/karma@4f23b14)) #### [6.3.7](karma-runner/karma@v6.3.6...v6.3.7) (2021-11-01) ##### Bug Fixes - **middleware:** replace %X_UA_COMPATIBLE% marker anywhere in the file ([f1aeaec](karma-runner/karma@f1aeaec)), closes [#​3711](karma-runner/karma#3711) #### [6.3.6](karma-runner/karma@v6.3.5...v6.3.6) (2021-10-25) ##### Bug Fixes - bump vulnerable ua-parser-js version ([6f2b2ec](karma-runner/karma@6f2b2ec)), closes [#​3713](karma-runner/karma#3713) #### [6.3.5](karma-runner/karma@v6.3.4...v6.3.5) (2021-10-20) ##### Bug Fixes - **client:** prevent socket.io from hanging due to mocked clocks ([#​3695](karma-runner/karma#3695)) ([105da90](karma-runner/karma@105da90)) #### [6.3.4](karma-runner/karma@v6.3.3...v6.3.4) (2021-06-14) ##### Bug Fixes - bump production dependencies within SemVer ranges ([#​3682](karma-runner/karma#3682)) ([36467a8](karma-runner/karma@36467a8)), closes [#​3680](karma-runner/karma#3680) #### [6.3.3](karma-runner/karma@v6.3.2...v6.3.3) (2021-06-01) ##### Bug Fixes - **server:** clean up vestigial code from proxy ([#​3640](karma-runner/karma#3640)) ([f4aeac3](karma-runner/karma@f4aeac3)), closes [/tools.ietf.org/html/std66#section-3](https://github.com//tools.ietf.org/html/std66/issues/section-3) #### [6.3.2](karma-runner/karma@v6.3.1...v6.3.2) (2021-03-29) ##### Bug Fixes - fix running tests in IE9 ([#​3668](karma-runner/karma#3668)) ([0055bc5](karma-runner/karma@0055bc5)), closes [/github.com/karma-runner/karma/blob/026fff870913fb6cd2858dd962935dc74c92b725/client/main.js#L14](https://github.com//github.com/karma-runner/karma/blob/026fff870913fb6cd2858dd962935dc74c92b725/client/main.js/issues/L14) [#​3665](karma-runner/karma#3665) #### [6.3.1](karma-runner/karma@v6.3.0...v6.3.1) (2021-03-24) ##### Bug Fixes - **client:** clearContext after complete sent ([#​3657](karma-runner/karma#3657)) ([c0962e3](karma-runner/karma@c0962e3)) </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, click this checkbox. --- This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate). Co-authored-by: cabr2-bot <[email protected]> Reviewed-on: https://codeberg.org/Calciumdibromid/CaBr2/pulls/1412 Reviewed-by: Epsilon_02 <[email protected]> Co-authored-by: Calciumdibromid Bot <[email protected]> Co-committed-by: Calciumdibromid Bot <[email protected]>
So the symptom is that after Karma page is loaded in IE9 the tests don't run and Karma is stuck at the "starting" step. Reloading the page once or twice makes IE9 connect to the server and tests pass successfully. After an "exciting" debugging session I figured out that the problem is that on the first load (and sometimes after the page reload) [`io` variable](https://github.com/karma-runner/karma/blob/026fff870913fb6cd2858dd962935dc74c92b725/client/main.js#L14), which should be set by the `socket.io.js` script is undefined. It looks like IE9 silently stops executing `socket.io.js` script somewhere midway and switches to the next script causing the `io` variable to be undefined. I assume it hits some limit or threshold or whatnot. Couldn't find much information on the Internet, besides people experiencing similar issues when loading e.g. unminified jQuery and their own code firing before the `$` variable is available. No good solutions found. Checking the `socket.io.js` contents, I have noticed that v2 served the minified client script on that path, while v3 now serves the unminified code. Presumably the huge script size is what causing IE9 to choke. Switching back to the minified socket.io client bundle allows tests to pass in IE9. With the fix, tests passed 5 times in a row, while without it they fail every time, so I assume it does resolve the problem. Fixes karma-runner#3665
## [6.3.2](karma-runner/karma@v6.3.1...v6.3.2) (2021-03-29) ### Bug Fixes * fix running tests in IE9 ([karma-runner#3668](karma-runner#3668)) ([0055bc5](karma-runner@0055bc5)), closes [/github.com/karma-runner/karma/blob/026fff870913fb6cd2858dd962935dc74c92b725/client/main.js#L14](https://github.com//github.com/karma-runner/karma/blob/026fff870913fb6cd2858dd962935dc74c92b725/client/main.js/issues/L14) [karma-runner#3665](karma-runner#3665)
So the symptom is that after Karma page is loaded in IE9 the tests don't run and Karma is stuck at the "starting" step. Reloading the page once or twice makes IE9 connect to the server and tests pass successfully.
After an "exciting" debugging session I figured out that the problem is that on the first load (and sometimes after the page reload)
io
variable, which should be set by thesocket.io.js
script is undefined. It looks like IE9 silently stops executingsocket.io.js
script somewhere midway and switches to the next script causing theio
variable to be undefined. I assume it hits some limit or threshold or whatnot. Couldn't find much information on the Internet, besides people experiencing similar issues when loading e.g. unminified jQuery and their own code firing before the$
variable is available. No good solutions found.Checking the
socket.io.js
contents, I have noticed that v2 served the minified client script on that path, while v3 now serves the unminified code. Presumably the huge script size is what causing IE9 to choke. Switching back to the minified socket.io client bundle allows tests to pass in IE9.With the fix, tests passed 5 times in a row, while without it they fail every time, so I assume it does resolve the problem.
Fixes #3665