jest-jasmine2

Upstream: https://github.com/facebook/jest/tree/v27.4.7/packages/jest-jasmine2

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:pencil2: Notes

• Our upstream, Jest, doesn't include any test files for the files in this directory, jest-jasmine2/src/jasmine/, so we look to the upstream that Jest is based off of Jasmine, for the test files
• The tests for CallTracker and SpyStrategy are copied off of the upstream files but the createSpy.ts file doesn't actually have a direct upstream equivalent in Jasmine so we copy some tests from SpySpec instead, leaving out the majority of tests that aren't yet relevant
• We expose andAlso in addition to the typical and for createSpy since and is a built in keyword for Lua so we can't cleanly chain fields (i.e. we can't get var.and to work so we allow for var.andAlso)
• We use the Roblox Lua Promise library in this module in a number of places to more closely mirror the asynchronous tests in Jasmine