User "Brion VIBBER" posted a comment on MediaWiki.r89082.

Full URL: http://www.mediawiki.org/wiki/Special:Code/MediaWiki/89082#c17388
Commit summary:

Adding or adjusting front-end function and variable documentation per our 
conventions.

Also did some trivial clean up, JSHint fixes and performance optimizations 
while at it. (per http://www.mediawiki.org/wiki/JavaScript_performance )
* Missing semicolons.
* [mediawiki.js Line 540] Unreachable 'registry' after 'throw'.
* [mediawiki.log.js] Checked for window.console but used console.
* Added callback option to mw.util.toggleToc (forwarded to 
jQuery.fn.slideUp/Down)
* Made mw.log argument more descriptive (logmsg instead of string)
* Using deepEqual(, true) instead of ok() when asserting true. (ok() is like 
casting a boolean (or a plain if() statement) to verify that something is not 
falsy)

Added missing test suites for:
* mw.util.toggleToc (follow-up r88732, Dummy check was introduced in r87898)

/me has been infected by Reedy and will be doing more of this tonight.

Comment:

Sounds like you're trying to combine two tests here:
# the expression returns the expected boolean result (something evaluating to 
true)
# the expression's return value is always a boolean-typed value

For #1 there, <code>ok()</code> is both sufficient and correct.

For #2, you'd also want to test a range of cases to actually cover it 
correctly. But honestly there's not much need to be doing that test on language 
constructs like the <code><=</code> and <code>in</code> operators, is there?

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