### day1: add examples as unit tests

master
parent 17a271e24e
commit 8c30eb1099
1 changed files with 27 additions and 0 deletions
1. 27
day1/src/main.rs

#### 27 day1/src/main.rs Unescape Escape View File

 `@ -27,3 +27,30 @@ fn main() {` ` println!("Fuel 1: {}", fuel_for_modules1(input.clone()));` ` println!("Fuel 2: {}", fuel_for_modules2(input));` `}` ``` ``` `#[cfg(test)]` `mod day1test {` ` #[test]` ` fn example1() {` ``` // Original descriptions: ``` ``` // > For a mass of 12, divide by 3 and round down to get 4, then subtract 2 to get 2. ``` ``` // > For a mass of 14, dividing by 3 and rounding down still yields 4, so the fuel required is also 2. ``` ``` // > For a mass of 1969, the fuel required is 654. ``` ``` // > For a mass of 100756, the fuel required is 33583. ``` ` assert_eq!(super::fuel_for_mass1(12), 2);` ` assert_eq!(super::fuel_for_mass1(14), 2);` ` assert_eq!(super::fuel_for_mass1(1969), 654);` ` assert_eq!(super::fuel_for_mass1(100756), 33583);` ` }` ``` ``` ` #[test]` ` fn example2() {` ``` // Original descriptions: ``` ``` // > A module of mass 14 requires 2 fuel. This fuel requires no further fuel (2 divided by 3 and rounded down is 0, which would call for a negative fuel), so the total fuel required is still just 2. ``` ``` // > At first, a module of mass 1969 requires 654 fuel. Then, this fuel requires 216 more fuel (654 / 3 - 2). 216 then requires 70 more fuel, which requires 21 fuel, which requires 5 fuel, which requires no further fuel. So, the total fuel required for a module of mass 1969 is 654 + 216 + 70 + 21 + 5 = 966. ``` ``` // > The fuel required by a module of mass 100756 and its fuel is: 33583 + 11192 + 3728 + 1240 + 411 + 135 + 43 + 12 + 2 = 50346. ``` ` assert_eq!(super::fuel_for_mass2(14), 2);` ` assert_eq!(super::fuel_for_mass2(1969), 966);` ` assert_eq!(super::fuel_for_mass2(100756), 50346);` ` }` `}`