Break down large test cases into smaller, focused tests that each verify a single feature or behavior. Each test should have a clear purpose that is evident from its name and structure. This improves test maintainability, readability, and makes failures easier to debug.
Break down large test cases into smaller, focused tests that each verify a single feature or behavior. Each test should have a clear purpose that is evident from its name and structure. This improves test maintainability, readability, and makes failures easier to debug.
Instead of combining multiple test cases:
#[test]
fn test_channel_behavior() {
let (tx, rx) = channel();
// Test multiple behaviors...
assert!(rx.is_empty());
tx.send(1).unwrap();
assert!(!rx.is_empty());
drop(tx);
assert!(rx.is_closed());
}
Break it into focused tests:
#[test]
fn is_empty_returns_true_initially() {
let (_, rx) = channel();
assert!(rx.is_empty());
}
#[test]
fn is_empty_returns_false_after_send() {
let (tx, rx) = channel();
tx.send(1).unwrap();
assert!(!rx.is_empty());
}
#[test]
fn is_closed_returns_true_after_sender_drop() {
let (tx, rx) = channel();
drop(tx);
assert!(rx.is_closed());
}
Key benefits:
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