feat: add tests

Author: jtr109

Cargo.lock

@@ -34,4 +34,5 @@ members = [
     "partitioning_into_minimum_number_of_deci_binary_numbers",
     "maximum_product_of_word_lengths",
     "maximum_erasure_value",
+    "maximum_gap",
 ]

Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "maximum_gap"
+version = "0.1.0"
+authors = ["Ryan Li <conbas2019@gmail.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

maximum_gap/Cargo.toml

@@ -0,0 +1,28 @@
+pub struct Solution {}
+
+impl Solution {
+    pub fn maximum_gap(nums: Vec<i32>) -> i32 {}
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    fn it_works(nums: Vec<i32>, expected: i32) {
+        assert_eq!(Solution::maximum_gap(nums), expected);
+    }
+
+    #[test]
+    fn example_1() {
+        let nums = vec![3, 6, 9, 1];
+        let expected = 3;
+        it_works(nums, expected);
+    }
+
+    #[test]
+    fn example_2() {
+        let nums = vec![10];
+        let expected = 0;
+        it_works(nums, expected);
+    }
+}