Tests that Linkifier works correctly.

Debugger was enabled.
The string "at triggerError (http://localhost/show/:22:11) " linkifies to url: http://localhost/show/
The lineNumber is 22 with type number
listeners added on raw source code: 1
original location: linkifier.html:9
pretty printed location: linkifier.html:12
reverted location: linkifier.html:9
listeners removed from raw source code: 1
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