35 lines
826 B
Rust
35 lines
826 B
Rust
#[cfg(test)]
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mod tests {
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use crate::multiplier::multiplier;
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use std::num::Wrapping;
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#[test]
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fn zero_times_one() {
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assert_eq!(multiplier(0, 1), 0 * 1);
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}
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#[test]
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fn four_times_three() {
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assert_eq!(multiplier(4, 3), 4 * 3);
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}
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#[test]
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fn one_times_one() {
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assert_eq!(multiplier(1, 1), 1 * 1);
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}
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#[test]
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fn random_numbers() {
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assert_eq!(multiplier(62_235, 12_756), 62_235 * 12_756);
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assert_eq!(multiplier(93_455, 4_756), 93_455 * 4_756);
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assert_eq!(multiplier(32_875, 23_655), 32_875 * 23_655);
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assert_eq!(multiplier(732_342, 796), 732_342 * 796);
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}
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#[test]
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fn overflow() {
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let big = Wrapping(3_245_532_214u32);
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assert_eq!(multiplier(3_245_532_214, 3_245_532_214), (big * big).0);
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}
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}
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