lust

Lust is just one Lua file with no dependencies, making it trivial to integrate by copying the file into a project, as shown in the usage section.

Offers chainable expect-style assertions like `expect(x).to.equal(y)` with support for tables and custom matchers, improving test clarity based on the documentation.

Includes spying to track function calls and arguments, useful for lightweight mocking without external libraries, as demonstrated in the spies section.

Supports nested describe blocks and before/after handlers for logical grouping and setup, allowing structured test suites per the examples.