Add tests for vote_program

sdk/src/vote_program.rs

@@ -29,6 +29,12 @@ pub struct Vote {
     pub tick_height: u64,
 }
 
+impl Vote {
+    pub fn new(tick_height: u64) -> Self {
+        Self { tick_height }
+    }
+}
+
 #[derive(Serialize, Deserialize, Debug, PartialEq, Eq, Clone)]
 pub enum VoteInstruction {
     /// Register a new "vote account" to represent a particular validator in the Vote Contract,
@@ -55,6 +61,11 @@ pub fn get_max_size() -> usize {
 }
 
 impl VoteProgram {
+    pub fn new(node_id: Pubkey) -> Self {
+        let votes = VecDeque::new();
+        Self { votes, node_id }
+    }
+
     pub fn deserialize(input: &[u8]) -> Result<VoteProgram, ProgramError> {
         deserialize(input).map_err(|_| ProgramError::InvalidUserdata)
     }