feat(iterators4): add factorial of zero test
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@ -18,6 +18,11 @@ pub fn factorial(num: u64) -> u64 {
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mod tests {
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use super::*;
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#[test]
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fn factorial_of_0() {
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assert_eq!(1, factorial(0));
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}
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#[test]
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fn factorial_of_1() {
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assert_eq!(1, factorial(1));
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