26 lines
688 B
Rust
26 lines
688 B
Rust
#[cfg(test)]
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mod tests {
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use crate::gray_code::gray_code;
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#[test]
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fn digits() {
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assert_eq!(gray_code(0), 0);
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assert_eq!(gray_code(1), 1);
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assert_eq!(gray_code(2), 3);
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assert_eq!(gray_code(3), 2);
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assert_eq!(gray_code(4), 6);
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assert_eq!(gray_code(5), 7);
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assert_eq!(gray_code(6), 5);
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assert_eq!(gray_code(7), 4);
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assert_eq!(gray_code(8), 12);
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assert_eq!(gray_code(9), 13);
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}
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#[test]
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fn msb_u32() {
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assert_eq!(gray_code(3_000_000_000), 3_954_733_312);
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assert_eq!(gray_code(2_147_483_648), 3_221_225_472);
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assert_eq!(gray_code(4_294_967_295), 2_147_483_648);
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}
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}
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