Cairo Testing

Overview

Guide writing test functions, using assertion macros, and running tests with Scarb.

Quick Use

• •Read references/testing.md before answering.
• •Put tests in a #[cfg(test)] module in src files.
• •Use the right assert macro for the expected condition.

Response Checklist

• •Add #[test] above each test function.
• •Use assert!, assert_eq!, assert_ne!, or comparison macros as needed.
• •Assert message arguments must be string literals, not variables (e.g., assert!(x, "msg") not assert!(x, msg)).
• •Use #[should_panic(expected: "...")] for panic-based tests.
• •Use #[ignore] for slow tests and scarb test --include-ignored when needed.
• •Add #[available_gas(n)] for recursion or long loops.

Example Requests

• •"How do I write a basic test in Cairo?"
• •"How do I assert a panic message?"
• •"How do I run a single test?"

Cairo by Example

• •Testing
• •Unit testing
• •Integration testing
• •Dev-dependencies
• •Scarb Tests
• •Attributes: cfg