diff --git a/src/processor/claim.rs b/src/processor/claim.rs
index b10ae95..64f64ed 100644
--- a/src/processor/claim.rs
+++ b/src/processor/claim.rs
@@ -12,7 +12,7 @@ use crate::{
     TREASURY,
 };
 
-/// Claim distributes owed token rewards from the treasury to the miner. It has 4 responsibilies:
+/// Claim distributes owed token rewards from the treasury to the miner. Its responsibilies include:
 /// 1. Transfer tokens from the treasury to the miner.
 /// 2. Decrement the miner's claimable rewards counter by an appropriate amount.
 /// 3. Update the program's lifetime stats.
diff --git a/src/processor/initialize.rs b/src/processor/initialize.rs
index 8c1ec1d..aa4faf4 100644
--- a/src/processor/initialize.rs
+++ b/src/processor/initialize.rs
@@ -22,7 +22,7 @@ use crate::{
     TOKEN_DECIMALS, TREASURY, TREASURY_ADDRESS,
 };
 
-/// Initialize sets up the Ore program state. Its responsibilities include:
+/// Initialize sets up the Ore program. Its responsibilities include:
 /// 1. Initialize the 8 bus accounts.
 /// 2. Initialize the treasury account.
 /// 3. Initialize the Ore mint account.
diff --git a/src/processor/mine.rs b/src/processor/mine.rs
index 203fd2e..ff622b8 100644
--- a/src/processor/mine.rs
+++ b/src/processor/mine.rs
@@ -22,7 +22,7 @@ use crate::{
     EPOCH_DURATION,
 };
 
-/// Mine is the primary workhorse instruction of the Ore program. It has 4 responsibilities including:
+/// Mine is the primary workhorse instruction of the Ore program. Its responsibilities include:
 /// 1. Verify the provided hash is valid.
 /// 2. Increment the user's claimable rewards counter.
 /// 3. Generate a new challenge for the miner.
diff --git a/src/processor/register.rs b/src/processor/register.rs
index 0e44f23..2c283c9 100644
--- a/src/processor/register.rs
+++ b/src/processor/register.rs
@@ -14,9 +14,9 @@ use crate::{
     PROOF,
 };
 
-/// Register generates a new hash chain for a prospective miner. It has 2 responsibilities:
-/// 1. Initializes a new proof account.
-/// 2. Generates an initial hash for the miner from the signer's key.
+/// Register generates a new hash chain for a prospective miner. Its responsibilities include:
+/// 1. Initialize a new proof account.
+/// 2. Generate an initial hash for the miner from the signer's key.
 ///
 /// Safety requirements:
 /// - Register is a permissionless instruction and can be called by anyone.
diff --git a/src/processor/reset.rs b/src/processor/reset.rs
index 611c68a..c5c42cc 100644
--- a/src/processor/reset.rs
+++ b/src/processor/reset.rs
@@ -12,8 +12,7 @@ use crate::{
     TARGET_EPOCH_REWARDS, TREASURY,
 };
 
-/// Reset transitions the Ore program from one epoch to the next. It is the most complex instruction in the
-/// Ore program and has three primary responsibilities including:
+/// Reset transitions the Ore program from one epoch to the next. Its responsibilities include:
 /// 1. Reset bus account rewards counters.
 /// 2. Adjust the reward rate to stabilize inflation.
 /// 3. Top up the treasury token account to backup claims.
@@ -167,6 +166,7 @@ mod tests {
         let current_rate = 1000;
         let new_rate =
             calculate_new_reward_rate(current_rate, TARGET_EPOCH_REWARDS.saturating_sub(1_000_000));
+        println!("{:?} {:?}", new_rate, current_rate);
         assert!(new_rate.gt(&current_rate));
     }
 
diff --git a/src/processor/update_admin.rs b/src/processor/update_admin.rs
index f4bed51..b74e324 100644
--- a/src/processor/update_admin.rs
+++ b/src/processor/update_admin.rs
@@ -5,7 +5,7 @@ use solana_program::{
 
 use crate::{instruction::UpdateAdminArgs, loaders::*, state::Treasury, utils::AccountDeserialize};
 
-/// UpdateAdmin updates the program's admin account. It has 1 responsibility:
+/// UpdateAdmin updates the program's admin account. Its responsibilities include:
 /// 1. Update the treasury admin address.
 ///
 /// Safety requirements:
@@ -13,17 +13,17 @@ use crate::{instruction::UpdateAdminArgs, loaders::*, state::Treasury, utils::Ac
 /// - Can only succeed if the provided treasury is valid.
 ///
 /// Discussion:
-/// - The admin authority has one lever of power: the ability to adjust the global 
+/// - The admin authority has one lever of power: the ability to adjust the global
 ///   mining difficulty. If the difficulty is too easy, miners will find hashes very quickly
 ///   and the bottleneck for mining will shift from local compute to Solana bandwidth. In essence,
 ///   if the Ore token has value and difficulty is low, mining becomes an incentivized stress
-///   test for the Solana network. 
+///   test for the Solana network.
 /// - At the same time, if difficulty is too hard, miners will have to wait a very long period
-///   of time between finding valid hashes. This will bias rewards to well-resourced miners 
-///   with large compute operations. Keeping a low difficulty ensures casual miners can 
+///   of time between finding valid hashes. This will bias rewards to well-resourced miners
+///   with large compute operations. Keeping a low difficulty ensures casual miners can
 ///   consistently earn rewards and undercuts some of the advantage of larger players.
-/// - Ultimately admin authority should be delegated to a governance mechanism – either 
-///   democratic or futarchic – to ensure difficulty is kept at a value that represents the 
+/// - Ultimately admin authority should be delegated to a governance mechanism – either
+///   democratic or futarchic – to ensure difficulty is kept at a value that represents the
 ///   values and interests of the whole ecosystem.
 pub fn process_update_admin<'a, 'info>(
     _program_id: &Pubkey,
diff --git a/src/processor/update_difficulty.rs b/src/processor/update_difficulty.rs
index 0a0a2c1..3fd337b 100644
--- a/src/processor/update_difficulty.rs
+++ b/src/processor/update_difficulty.rs
@@ -7,7 +7,7 @@ use crate::{
     instruction::UpdateDifficultyArgs, loaders::*, state::Treasury, utils::AccountDeserialize,
 };
 
-/// UpdateDifficulty updates the program's global difficulty value. It has 1 responsibility:
+/// UpdateDifficulty updates the program's global difficulty value. Its responsibilities include:
 /// 1. Update the difficulty.
 ///
 /// Safety requirements:
@@ -18,14 +18,14 @@ use crate::{
 /// - Ore subdivides into 1 billion indivisible atomic units. Therefore if global hashpower
 ///   were to increase to the point where >1B valid hashes were submitted to the protocol for
 ///   validation per epoch, the Ore inflation rate could be pushed above the 1 ORE / min target.
-/// - The strict limits on bus reward counters guarantee inflation can never exceed 2 ORE / min, 
+/// - The strict limits on bus reward counters guarantee inflation can never exceed 2 ORE / min,
 ///   but it is the responsibility of the admin to adjust mining difficulty if needed to maintain
 ///   the 1 ORE / min target average.
-/// - It is worth noting that Solana today processes well below 1 million real TPS or 
+/// - It is worth noting that Solana today processes well below 1 million real TPS or
 ///   (60 * 1,000,000) = 60,000,000 transactions per minute. Even if every transaction on Solana
-///   were a mine operation, this would still be two orders of magnitude below the boundary 
-///   condition where Ore inflation targets would be challenged. So in practice, Solana is likely 
-///   to reach its network saturation point long before Ore ever hits its theoretical limits. 
+///   were a mine operation, this would still be two orders of magnitude below the boundary
+///   condition where Ore inflation targets would be challenged. So in practice, Solana is likely
+///   to reach its network saturation point long before Ore ever hits its theoretical limits.
 pub fn process_update_difficulty<'a, 'info>(
     _program_id: &Pubkey,
     accounts: &'a [AccountInfo<'info>],
diff --git a/tests/test_update_admin.rs b/tests/test_update_admin.rs
index d91ac5e..9353345 100644
--- a/tests/test_update_admin.rs
+++ b/tests/test_update_admin.rs
@@ -1,7 +1,8 @@
 use ore::{state::Treasury, utils::AccountDeserialize, TREASURY_ADDRESS};
-use solana_program::{hash::Hash, pubkey::Pubkey};
-use solana_program_test::{processor, BanksClient, ProgramTest};
+use solana_program::{hash::Hash, pubkey::Pubkey, rent::Rent};
+use solana_program_test::{processor, read_file, BanksClient, ProgramTest};
 use solana_sdk::{
+    account::Account,
     signature::{Keypair, Signer},
     transaction::Transaction,
 };
@@ -71,5 +72,19 @@ async fn test_update_admin_bad_signer() {
 async fn setup_program_test_env() -> (BanksClient, Keypair, Hash) {
     let mut program_test = ProgramTest::new("ore", ore::ID, processor!(ore::process_instruction));
     program_test.prefer_bpf(true);
+
+    // Setup metadata program
+    let data = read_file(&"tests/buffers/metadata_program.bpf");
+    program_test.add_account(
+        mpl_token_metadata::ID,
+        Account {
+            lamports: Rent::default().minimum_balance(data.len()).max(1),
+            data,
+            owner: solana_sdk::bpf_loader::id(),
+            executable: true,
+            rent_epoch: 0,
+        },
+    );
+
     program_test.start().await
 }
diff --git a/tests/test_update_difficulty.rs b/tests/test_update_difficulty.rs
index 7d54433..504a86e 100644
--- a/tests/test_update_difficulty.rs
+++ b/tests/test_update_difficulty.rs
@@ -1,7 +1,8 @@
 use ore::{state::Treasury, utils::AccountDeserialize, TREASURY_ADDRESS};
-use solana_program::{hash::Hash, keccak::Hash as KeccakHash};
-use solana_program_test::{processor, BanksClient, ProgramTest};
+use solana_program::{hash::Hash, keccak::Hash as KeccakHash, rent::Rent};
+use solana_program_test::{processor, read_file, BanksClient, ProgramTest};
 use solana_sdk::{
+    account::Account,
     signature::{Keypair, Signer},
     transaction::Transaction,
 };
@@ -66,5 +67,19 @@ async fn test_update_difficulty_bad_signer() {
 async fn setup_program_test_env() -> (BanksClient, Keypair, Hash) {
     let mut program_test = ProgramTest::new("ore", ore::ID, processor!(ore::process_instruction));
     program_test.prefer_bpf(true);
+
+    // Setup metadata program
+    let data = read_file(&"tests/buffers/metadata_program.bpf");
+    program_test.add_account(
+        mpl_token_metadata::ID,
+        Account {
+            lamports: Rent::default().minimum_balance(data.len()).max(1),
+            data,
+            owner: solana_sdk::bpf_loader::id(),
+            executable: true,
+            rent_epoch: 0,
+        },
+    );
+
     program_test.start().await
 }