Bug: comm/mail/test/browser/content-tabs/browser_contentTab.js  test fails, Unknown Collection "thunderbird/url-classifier-skip-urls
Status: RESOLVED
Priority: --
Resolution: FIXED
Created: 2021-03-14 05:13:16+00:00
Resolved: 2021-04-19 19:11:31+00:00

The said test fails on try-comm-central due to timeout.
I found the following error messages in the log.

Not sure if this is the reason for timeout, but these need to be fixed first.
```
[task 2021-03-13T04:11:40.135Z] 04:11:40     INFO - waitFor@resource://testing-common/mozmill/utils.jsm:111:12
[task 2021-03-13T04:11:40.135Z] 04:11:40     INFO - wait_for_content_tab_load@resource://testing-common/mozmill/ContentTabHelpers.jsm:274:9
[task 2021-03-13T04:11:40.135Z] 04:11:40     INFO - open_content_tab_with_url@resource://testing-common/mozmill/ContentTabHelpers.jsm:185:28
[task 2021-03-13T04:11:40.136Z] 04:11:40     INFO - test_content_tab_open@chrome://mochitests/content/browser/comm/mail/test/browser/content-tabs/browser_contentTab.js:48:38
[task 2021-03-13T04:11:40.136Z] 04:11:40     INFO - Tester_execTest/<@chrome://mochikit/content/browser-test.js:1089:34
[task 2021-03-13T04:11:40.136Z] 04:11:40     INFO - Tester_execTest@chrome://mochikit/content/browser-test.js:1129:11
[task 2021-03-13T04:11:40.136Z] 04:11:40     INFO - nextTest/<@chrome://mochikit/content/browser-test.js:949:14
[task 2021-03-13T04:11:40.136Z] 04:11:40     INFO - SimpleTest.waitForFocus/waitForFocusInner/focusedOrLoaded/<@chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:1037:23
[task 2021-03-13T04:11:40.136Z] 04:11:40     INFO - 
[task 2021-03-13T04:11:40.136Z] 04:11:40     INFO - Console message: [JavaScript Error: "The character encoding of the HTML document was not declared. The document will render with garbled text in some browser configurations if the document contains characters from outside the US-ASCII range. The character encoding of the page must be declared in the document or in the transfer protocol." {file: "http://mochi.test:8888/browser/comm/mail/test/browser/content-tabs/html/whatsnew.html" line: 0}]
[task 2021-03-13T04:11:40.136Z] 04:11:40     INFO - TEST-PASS | comm/mail/test/browser/content-tabs/browser_contentTab.js | "What's New Content Test" == "What's New Content Test" - 
[task 2021-03-13T04:11:40.136Z] 04:11:40     INFO - Leaving test bound test_content_tab_open
[task 2021-03-13T04:11:40.136Z] 04:11:40     INFO - Entering test bound test_spellcheck_in_content_tabs
[task 2021-03-13T04:11:40.136Z] 04:11:40     INFO - Buffered messages logged at 04:10:56
[task 2021-03-13T04:11:40.136Z] 04:11:40     INFO - TEST-PASS | comm/mail/test/browser/content-tabs/browser_contentTab.js | true == true - 
[task 2021-03-13T04:11:40.136Z] 04:11:40     INFO - TEST-PASS | comm/mail/test/browser/content-tabs/browser_contentTab.js | true == true - 
[task 2021-03-13T04:11:40.136Z] 04:11:40     INFO - TEST-PASS | comm/mail/test/browser/content-tabs/browser_contentTab.js | true == true - 
[task 2021-03-13T04:11:40.136Z] 04:11:40     INFO - TEST-PASS | comm/mail/test/browser/content-tabs/browser_contentTab.js | true == true - 
[task 2021-03-13T04:11:40.139Z] 04:11:40     INFO - TEST-PASS | comm/mail/test/browser/content-tabs/browser_contentTab.js | true == true - 
[task 2021-03-13T04:11:40.139Z] 04:11:40     INFO - TEST-PASS | comm/mail/test/browser/content-tabs/browser_contentTab.js | What, is zombocom a registered word now? - true == true - 
[task 2021-03-13T04:11:40.139Z] 04:11:40     INFO - TEST-PASS | comm/mail/test/browser/content-tabs/browser_contentTab.js | But I just taught you this word! - true == true - 
[task 2021-03-13T04:11:40.140Z] 04:11:40     INFO - Leaving test bound test_spellcheck_in_content_tabs
[task 2021-03-13T04:11:40.140Z] 04:11:40     INFO - Entering test bound test_content_tab_default_favicon
[task 2021-03-13T04:11:40.141Z] 04:11:40     INFO - Buffered messages logged at 04:10:57
[task 2021-03-13T04:11:40.141Z] 04:11:40     INFO - TEST-PASS | comm/mail/test/browser/content-tabs/browser_contentTab.js | [object Object] == [object Object] - 
[task 2021-03-13T04:11:40.141Z] 04:11:40     INFO - Console message: [JavaScript Error: "The character encoding of the HTML document was not declared. The document will render with garbled text in some browser configurations if the document contains characters from outside the US-ASCII range. The character encoding of the page must be declared in the document or in the transfer protocol." {file: "http://mochi.test:8888/browser/comm/mail/test/browser/content-tabs/html/whatsnew1.html" line: 0}]
[task 2021-03-13T04:11:40.143Z] 04:11:40     INFO - TEST-PASS | comm/mail/test/browser/content-tabs/browser_contentTab.js | "What's New Content Test 1" == "What's New Content Test 1" - 
[task 2021-03-13T04:11:40.144Z] 04:11:40     INFO - TEST-PASS | comm/mail/test/browser/content-tabs/browser_contentTab.js | Checking tab favicon - "http://mochi.test:8888/favicon.ico" == "http://mochi.test:8888/favicon.ico" - 
[task 2021-03-13T04:11:40.144Z] 04:11:40     INFO - Leaving test bound test_content_tab_default_favicon
[task 2021-03-13T04:11:40.145Z] 04:11:40     INFO - Entering test bound test_content_tab_onbeforeunload
[task 2021-03-13T04:11:40.145Z] 04:11:40     INFO - Console message: [JavaScript Error: "Failed to get strings from dom.properties" {file: "resource:///modules/PromptCollection.jsm" line: 33}]
[task 2021-03-13T04:11:40.145Z] 04:11:40     INFO - asyncBeforeUnloadCheck@resource:///modules/PromptCollection.jsm:33:10
[task 2021-03-13T04:11:40.145Z] 04:11:40     INFO - permitUnload@chrome://global/content/elements/browser-custom-element.js:1709:21
[task 2021-03-13T04:11:40.145Z] 04:11:40     INFO - tryCloseTab@chrome://messenger/content/specialTabs.js:962:27
[task 2021-03-13T04:11:40.145Z] 04:11:40     INFO - closeTab@chrome://messenger/content/tabmail.js:1170:41
[task 2021-03-13T04:11:40.145Z] 04:11:40     INFO - test_content_tab_onbeforeunload@chrome://mochitests/content/browser/comm/mail/test/browser/content-tabs/browser_contentTab.js:177:14
[task 2021-03-13T04:11:40.145Z] 04:11:40     INFO - 
[task 2021-03-13T04:11:40.146Z] 04:11:40     INFO - Buffered messages finished
[task 2021-03-13T04:11:40.146Z] 04:11:40     INFO - TEST-UNEXPECTED-FAIL | comm/mail/test/browser/content-tabs/browser_contentTab.js | Test timed out - 
```

Bug 1601484
Bug 1680871 may be related.