Announced (v8): convert tests to use testing-library

[TristanWatanabe]

Current Behavior

• v8 Announced tests don't use testing-library

New Behavior

• Convert Announced to fully use testing-library

Related Issue(s)

part of #21663

[codesandbox-ci]

This pull request is automatically built and testable in CodeSandbox.

To see build info of the built libraries, click here or the icon next to each commit SHA.

Latest deployment of this branch, based on commit aef875f:

Sandbox	Source
@fluentui/react 8 starter	Configuration
@fluentui/react-components 9 starter	Configuration

[size-auditor]

Asset size changes

Size Auditor did not detect a change in bundle size for any component!

Baseline commit: f10cc045484b962652a400ef2ef4f3412c8d168b (build)

[fabricteam]

📊 Bundle size report

_{🤖 This report was generated against f10cc045484b962652a400ef2ef4f3412c8d168b}

[fabricteam]

Perf Analysis (@fluentui/react)

No significant results to display.

All results

Scenario	Render type	Master Ticks	PR Ticks	Iterations	Status
BaseButton	mount	727	784	5000
Breadcrumb	mount	2034	2048	1000
Checkbox	mount	1167	1265	5000
CheckboxBase	mount	1113	959	5000
ChoiceGroup	mount	3832	3701	5000
ComboBox	mount	743	784	1000
CommandBar	mount	8376	8135	1000
ContextualMenu	mount	9553	9975	1000
DefaultButton	mount	879	878	5000
DetailsRow	mount	2920	3182	5000
DetailsRowFast	mount	3042	3130	5000
DetailsRowNoStyles	mount	2897	2946	5000
Dialog	mount	1844	1855	1000
DocumentCardTitle	mount	118	153	1000
Dropdown	mount	2744	2538	5000
FocusTrapZone	mount	1436	1556	5000
FocusZone	mount	1465	1440	5000
IconButton	mount	1418	1507	5000
Label	mount	300	255	5000
Layer	mount	2480	2309	5000
Link	mount	351	405	5000
MenuButton	mount	1193	1120	5000
MessageBar	mount	1708	1630	5000
Nav	mount	2636	2594	1000
OverflowSet	mount	872	917	5000
Panel	mount	1708	1738	1000
Persona	mount	633	678	1000
Pivot	mount	1181	1160	1000
PrimaryButton	mount	1002	1083	5000
Rating	mount	6554	6302	5000
SearchBox	mount	1019	1063	5000
Shimmer	mount	1923	2137	5000
Slider	mount	1561	1595	5000
SpinButton	mount	3961	3946	5000
Spinner	mount	323	358	5000
SplitButton	mount	2484	2666	5000
Stack	mount	390	395	5000
StackWithIntrinsicChildren	mount	1862	1844	5000
StackWithTextChildren	mount	4050	4289	5000
SwatchColorPicker	mount	9137	9523	5000
TagPicker	mount	2303	2159	5000
TeachingBubble	mount	84532	48175	5000
Text	mount	325	357	5000
TextField	mount	1191	1054	5000
ThemeProvider	mount	963	884	5000
ThemeProvider	virtual-rerender	501	514	5000
ThemeProvider	virtual-rerender-with-unmount	1439	1441	5000
Toggle	mount	597	635	5000
buttonNative	mount	100	101	5000