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25 lines
538 B
Rust
25 lines
538 B
Rust
// Tests are important to ensure that your code does what you think it should
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// do.
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fn is_even(n: i64) -> bool {
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n % 2 == 0
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}
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fn main() {
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// You can optionally experiment here.
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}
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#[cfg(test)]
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mod tests {
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// When writing unit tests, it is common to import everything from the outer
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// module (`super`) using a wildcard.
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use super::*;
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#[test]
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fn you_can_assert() {
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assert!(is_even(0));
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assert!(!is_even(-1));
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// ^ You can assert `false` using the negation operator `!`.
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}
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}
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