additional unit test

[johnataylor]

No description provided.

[johnataylor]

@VKAlwaysWin thanks for the heads up - fixed the event name in this PR and we are working with the Teams Team on finding about more about the additional event you mentioned.

[coveralls]

Pull Request Test Coverage Report for Build 79382

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 34 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-1.1%) to 77.842%

---

Files with Coverage Reduction	New Missed Lines	%
/libraries/Microsoft.Bot.Builder.Teams/TeamsActivityHandler.cs	34	55.29%

Totals
Change from base Build 79359:	-1.1%
Covered Lines:	4546
Relevant Lines:	5840

---

💛 - Coveralls

[fuselabs]

✔️ No Binary Compatibility issues for Microsoft.Bot.Builder.dll compared against version 4.3.1
✔️ No Binary Compatibility issues for Microsoft.Bot.Builder.AI.Luis.dll compared against version 4.3.1
✔️ No Binary Compatibility issues for Microsoft.Bot.Builder.AI.QnA.dll compared against version 4.3.1
✔️ No Binary Compatibility issues for Microsoft.Bot.Builder.ApplicationInsights.dll compared against version 4.3.1
✔️ No Binary Compatibility issues for Microsoft.Bot.Builder.Azure.dll compared against version 4.3.1
✔️ No Binary Compatibility issues for Microsoft.Bot.Builder.Dialogs.dll compared against version 4.3.1
✔️ No Binary Compatibility issues for Microsoft.Bot.Builder.TemplateManager.dll compared against version 4.3.1
✔️ No Binary Compatibility issues for Microsoft.Bot.Configuration.dll compared against version 4.3.1
✔️ No Binary Compatibility issues for Microsoft.Bot.Connector.dll compared against version 4.3.1
✔️ No Binary Compatibility issues for Microsoft.Bot.Schema.dll compared against version 4.3.1

[VKAlwaysWin]

@johnataylor thank you very much.

Regarding composeExtension/onCardButtonClicked it was also mentioned here: MicrosoftDocs/msteams-docs#947 (comment)