How to test functions in test

[linonetwo]

I write a function

title: $:/plugins/linonetwo/activity-log-tools/function/activity-log-title
tags: $:/tags/Global

\function fallback-activity-log-title() [addsuffix[/log]]
\function activity-log-title(sourceTitle) [<sourceTitle>get[activity-log]] ~[<sourceTitle>function[fallback-activity-log-title]]

It works perfect in advanced search.

And the test is

describe('activity log title functions', function() {
  const eventGeneratorTitle = '$:/plugins/linonetwo/early-sleep-early-work/events/actions/early-sleep';
  const logTitle = '$:/plugins/linonetwo/early-sleep-early-work/events/logs/actions/early-sleep';


  it('should return given log file title', function() {
    expect($tw.wiki.filterTiddlers(`[function[activity-log-title],[${eventGeneratorTitle }]]`)).toEqual(logTitle);
  });

  it('could return fallback log file title', function() {
    expect($tw.wiki.filterTiddlers(`[function[activity-log-title],[NonExistingTiddler]]`, $tw.rootWidget, $tw.wiki.makeTiddlerIterator([]))).toEqual(['NonExistingTiddler/log']);
  });

});

The filter is not properlly executed in the test, if not providing , $tw.rootWidget, $tw.wiki.makeTiddlerIterator([]) it will use all tiddlers as input. (1)

But if provided $tw.wiki.makeTiddlerIterator([]) the output will be empty. (2)

Failures:
1) activity log title functions should return given log file title
  Message:
    Expected '$:/boot/boot.css$:/boot/boot.js$:/boot/bootprefix.js$:/config/PageControlButtons/Visibility/$:/core/ui/Buttons/language$:/config/PageControlButtons/Visibility/$:/core/ui/Buttons/layout$:/config/PageControlButtons/Visibility/$:/core/ui/Buttons/palette$:/config/PageControlButtons/Visibility/$:/core/ui/Buttons/refresh$:/config/PageControlButtons/Visibility/$:/core/ui/Buttons/storyview$:/config/PageControlButtons/Visibility/$:/core/ui/Buttons/theme$:/config/PageControlButtons/Visibility/$:/plugins/linonetwo/tw-calendar/tiddlywiki-ui/GoToTiddlersCalendarLayoutButton$:/config/ViewToolbarButtons/Visibility/$:/core/ui/Buttons/info$:/core$:/DefaultTiddlers$:/favicon.ico$:/HistoryList$:/isEncrypted$:/language$:/languages/zh-Hans$:/layout$:/library/sjcl.js$:/Modern.TiddlyDev/Startup$:/palette$:/plugins/Gk0Wk/CPL-Repo$:/plugins/Gk0Wk/CPL-Repo/config/popup-readme-at-startup$:/plugins/Gk0Wk/echarts$:/plugins/Gk0Wk/focused-tiddler$:/plugins/Gk0Wk/notionpage-covericon$:/plugins/kixam/datepicker$: ... to equal '$:/plugins/linonetwo/early-sleep-early-work/events/logs/actions/early-sleep'.
`

2) activity log title functions could return fallback log file title
  Message:
    Expected $.length = 0 to equal 1.
    Expected $[0] = undefined to equal 'NonExistingTiddler/log'.

[saqimtiaz]

@linonetwo I would recommend using the newer wikitext based tests, see for example https://github.com/Jermolene/TiddlyWiki5/blob/master/editions/test/tiddlers/tests/data/functions/FunctionFilterrunVariables2.tid and https://github.com/Jermolene/TiddlyWiki5/blob/master/editions/test/tiddlers/tests/data/filters/substitute.tid

[linonetwo]

I see... very new usage, it even have two title:. I will take time to figure out how to use this format. Thanks.

[saqimtiaz]

@linonetwo each file can contain multiple tiddlers, not only two. Each tiddler has the same format as .tid files, and tiddlers are separated by a blank line and the character +.