Test cases for display_secret

Author: dr-orlovsky

src/secret.rs

@@ -119,3 +119,24 @@ impl KeyPair {
     }
 }
 */
+
+#[cfg(test)]
+mod test {
+    use key::ONE_KEY;
+
+    #[test]
+    pub fn secret_key_display() {
+        assert_eq!(
+            ONE_KEY.display_secret().to_string(),
+            "0000000000000000000000000000000000000000000000000000000000000001"
+        );
+    }
+
+    #[test]
+    pub fn secret_key_debug() {
+        assert_eq!(
+            &format!("{:?}", ONE_KEY.display_secret()),
+            "[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1]"
+        );
+    }
+}