Arrange, Act and Assert (AAA) Pattern
A pattern for structuring unit tests
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Unit tests
An automated test which verifies a single unit of behaviour, runs quickly and in isolation
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Software Entropy
The tendency for codebases to become harder to change as they grow.
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Test Coverage Metrics
Metrics that answer the question : how much of our code is executed by our tests?
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Multiple Inheritance
When an object inherits from multiple parents.
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Object Prototypes
OOP in Lua via prototypal inheritance — objects delegate missing field lookups to a prototype table.
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Lua Table-Access Metamethods
Metamethods for intercepting table reads and writes — the foundation of OOP in Lua.
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Metatables
A table attached to another table to define its custom behaviour, via metamethods like __add and __index.
