Add XCTAssertThrowsSpecific

[fortmarek]

Short description 📝

I have noticed that we frequently test for specific errors, so I figured it'd be nice to add a convenience method to XCTestCase to make this more streamlined.

Solution 📦

Adding extension to XCTestCase called XCTAssertThrowsSpecific (same as similar obj-c method); the expected error must conform to Equatable and Swift.Error.

Implementation 👩‍💻👨‍💻

• Add XCTAssertThrowsSpecific method
• Add example usage
• Go through tests and change to this method (I'll do this once I get validated that we want to use it as-is)

[codecov]

Codecov Report

Merging #535 into master will decrease coverage by <.01%.
The diff coverage is 97.61%.

@@            Coverage Diff             @@
##           master     #535      +/-   ##
==========================================
- Coverage   91.34%   91.34%   -0.01%     
==========================================
  Files         364      364              
  Lines       19478    19473       -5     
==========================================
- Hits        17793    17787       -6     
- Misses       1685     1686       +1

Impacted Files	Coverage Δ
...ts/TuistEnvKitTests/Installer/InstallerTests.swift	98.09% <100%> (-0.02%)	⬇️
Tests/TuistGeneratorTests/Graph/SDKNodeTests.swift	100% <100%> (ø)	⬆️
Tests/TuistEnvKitTests/GitHub/ReleaseTests.swift	100% <100%> (ø)	⬆️
...itTests/Playgrounds/PlaygroundGeneratorTests.swift	100% <100%> (ø)	⬆️
Sources/TuistKit/Models/Up/UpHomebrew.swift	100% <100%> (ø)	⬆️
.../TuistKitTests/Commands/GenerateCommandTests.swift	99.29% <100%> (ø)	⬆️
...eratorTests/Graph/GraphCircularDetectorTests.swift	100% <100%> (ø)	⬆️
...KitTests/Generator/GeneratorModelLoaderTests.swift	97.42% <100%> (-0.01%)	⬇️
Tests/TuistKitTests/Setup/SetupLoaderTests.swift	100% <100%> (ø)	⬆️
...ts/TuistCoreTests/Xcode/XcodeControllerTests.swift	100% <100%> (ø)	⬆️
... and 8 more

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[tuistbot]

	1 Warning
⚠️	Have you introduced any user-facing changes? If so, please take some time to update the documentation. Keeping the documentation up to date makes it easier for users to learn how to use Tuist.

Generated by 🚫 Danger

[ollieatkinson]

Nice improvement 👍

Go through tests and change to this method (I'll do this once I get validated that we want to use it as-is)

Change the ones you are comfortable changing

[pepicrft]

@fortmarek Swiftlint & Swiftformat don't seem happy with the changes :)