Default value of 20 for min pub (#327)

* Update contract and tests

* Add constant

Author: guibescos

program/rust/src/c_oracle_header.rs

@@ -12,3 +12,4 @@ pub const MAX_CI_DIVISOR: i64 = 3;
 /// Bound on the range of the exponent in price accounts. This number is set such that the
 /// PD-based EMA computation does not lose too much precision.
 pub const MAX_NUM_DECIMALS: i32 = 8;
+pub const PRICE_ACCOUNT_DEFAULT_MIN_PUB: u8 = 20;

program/rust/src/processor/add_price.rs

@@ -5,7 +5,10 @@ use {
             ProductAccount,
             PythAccount,
         },
-        c_oracle_header::PC_PTYPE_UNKNOWN,
+        c_oracle_header::{
+            PC_PTYPE_UNKNOWN,
+            PRICE_ACCOUNT_DEFAULT_MIN_PUB,
+        },
         deserialize::{
             load,
             load_checked,
@@ -76,6 +79,7 @@ pub fn add_price(
     price_data.price_type = cmd_args.price_type;
     price_data.product_account = *product_account.key;
     price_data.next_price_account = product_data.first_price_account;
+    price_data.min_pub_ = PRICE_ACCOUNT_DEFAULT_MIN_PUB;
     product_data.first_price_account = *price_account.key;
 
     Ok(())

program/rust/src/tests/test_add_price.rs

@@ -7,7 +7,10 @@ use {
             ProductAccount,
             PythAccount,
         },
-        c_oracle_header::PC_VERSION,
+        c_oracle_header::{
+            PC_VERSION,
+            PRICE_ACCOUNT_DEFAULT_MIN_PUB,
+        },
         deserialize::load_checked,
         error::OracleError,
         instruction::{
@@ -82,6 +85,7 @@ fn test_add_price() {
         let product_data = load_checked::<ProductAccount>(&product_account, PC_VERSION).unwrap();
         assert_eq!(price_data.exponent, 1);
         assert_eq!(price_data.price_type, 1);
+        assert_eq!(price_data.min_pub_, PRICE_ACCOUNT_DEFAULT_MIN_PUB);
         assert!(price_data.product_account == *product_account.key);
         assert!(price_data.next_price_account == Pubkey::default());
         assert!(product_data.first_price_account == *price_account.key);
@@ -103,6 +107,7 @@ fn test_add_price() {
         let product_data = load_checked::<ProductAccount>(&product_account, PC_VERSION).unwrap();
         assert_eq!(price_data_2.exponent, 1);
         assert_eq!(price_data_2.price_type, 1);
+        assert_eq!(price_data_2.min_pub_, PRICE_ACCOUNT_DEFAULT_MIN_PUB);
         assert!(price_data_2.product_account == *product_account.key);
         assert!(price_data_2.next_price_account == *price_account.key);
         assert!(product_data.first_price_account == *price_account_2.key);