[Autofill] Remove encrypted messaging from tests

[dbajpeyi]

Task/Issue URL: https://app.asana.com/1/137249556945/project/1205996472158114/task/1210844778150737?focus=true
Tech Design URL:
CC: @amddg44

Description

Getting rid of tests using encrypted messaging, and using replyHandler instead.

Testing Steps

Impact and Risks

What could go wrong?

Quality Considerations

Notes to Reviewer

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Internal references:

Definition of Done | Engineering Expectations | Tech Design Template

[Copilot]

Pull Request Overview

This PR removes encrypted messaging functionality from the AutofillEmailUserScript tests and updates them to use the newer reply handler pattern instead of the deprecated encrypted messaging approach.

Key changes:

• Removed encrypted messaging test utilities and related test methods
• Updated all test methods to use the modern userContentController(_:didReceive:replyHandler:) API
• Added proper reply handler testing with expectation fulfillment
• Added @available(iOS 14, macOS 11, *) annotations to all test methods

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
AutofillEmailUserScriptTests.swift	Removed encrypted messaging tests and updated all test methods to use reply handlers with proper async testing patterns
AutofillUserScript.swift	Changed unsupported message handling from assertion failure to proper error response via reply handler

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[Copilot]

Mixing async/await with expectation-based testing is not recommended. Either use async/await throughout the test or stick with expectations. The current implementation uses both await and waitForExpectations which is inconsistent.

[dbajpeyi]

Good point ;)

[Copilot]

The userContentController(_:didReceive:replyHandler:) method is not async and cannot be awaited. Remove the await keyword from this method call.

Suggested change

	await userScript.userContentController(userContentController, didReceive: message) { reply, error in
	userScript.userContentController(userContentController, didReceive: message) { reply, error in