Add tests to cw20 InstantiateMsg

contracts/cw20-base/src/msg.rs

@@ -14,6 +14,7 @@ pub struct InstantiateMarketingInfo {
 }
 
 #[derive(Serialize, Deserialize, JsonSchema, Debug, Clone, PartialEq)]
+#[cfg_attr(test, derive(Default))]
 pub struct InstantiateMsg {
     pub name: String,
     pub symbol: String,
@@ -122,3 +123,52 @@ pub enum QueryMsg {
 
 #[derive(Serialize, Deserialize, JsonSchema)]
 pub struct MigrateMsg {}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn validate_instantiatemsg_name() {
+        // Too short
+        let mut msg = InstantiateMsg {
+            name: str::repeat("a", 2),
+            ..InstantiateMsg::default()
+        };
+        assert!(!msg.has_valid_name());
+
+        // In the correct length range
+        msg.name = str::repeat("a", 3);
+        assert!(msg.has_valid_name());
+
+        // Too long
+        msg.name = str::repeat("a", 51);
+        assert!(!msg.has_valid_name());
+    }
+
+    #[test]
+    fn validate_instantiatemsg_symbol() {
+        // Too short
+        let mut msg = InstantiateMsg {
+            symbol: str::repeat("a", 2),
+            ..InstantiateMsg::default()
+        };
+        assert!(!msg.has_valid_symbol());
+
+        // In the correct length range
+        msg.symbol = str::repeat("a", 3);
+        assert!(msg.has_valid_symbol());
+
+        // Too long
+        msg.symbol = str::repeat("a", 13);
+        assert!(!msg.has_valid_symbol());
+
+        // Has illegal char
+        let illegal_chars = [[64u8], [91u8], [123u8]];
+        illegal_chars.iter().for_each(|c| {
+            let c = std::str::from_utf8(c).unwrap();
+            msg.symbol = str::repeat(c, 3);
+            assert!(!msg.has_valid_symbol());
+        });
+    }
+}