chore: Make tests run faster (MystenLabs#6023)

... By advancing time automatically when there's no work left. Changes computed experimentally, full list of expected gains:
https://gist.github.com/745ad2177a62ed965bb29c234ea9edb7

crates/sui-core/src/epoch/tests/reconfiguration_tests.rs

@@ -34,7 +34,7 @@ use crate::{
     test_utils::to_sender_signed_transaction,
 };
 
-#[tokio::test]
+#[tokio::test(flavor = "current_thread", start_paused = true)]
 async fn test_start_epoch_change() {
     // Create a sender, owning an object and a gas object.
     let (sender, sender_key): (_, AccountKeyPair) = get_key_pair();

crates/sui-core/src/unit_tests/gateway_state_tests.rs

@@ -76,7 +76,7 @@ async fn public_transfer_object(
     Ok(result)
 }
 
-#[tokio::test]
+#[tokio::test(flavor = "current_thread", start_paused = true)]
 async fn test_public_transfer_object() {
     let (addr1, key1): (_, AccountKeyPair) = get_key_pair();
     let (addr2, _key2): (_, AccountKeyPair) = get_key_pair();
@@ -165,7 +165,7 @@ async fn test_publish() {
         .unwrap();
 }
 
-#[tokio::test]
+#[tokio::test(flavor = "current_thread", start_paused = true)]
 async fn test_coin_split() {
     let (addr1, key1): (_, AccountKeyPair) = get_key_pair();
 
@@ -698,7 +698,7 @@ async fn test_multiple_gateways() {
     assert!(response.effects.status.is_ok());
 }
 
-#[tokio::test]
+#[tokio::test(flavor = "current_thread", start_paused = true)]
 async fn test_batch_transaction() {
     let (addr1, key1): (_, AccountKeyPair) = get_key_pair();
     let (addr2, _key2): (_, AccountKeyPair) = get_key_pair();

crates/sui-storage/src/mutex_table.rs

@@ -290,7 +290,7 @@ async fn test_mutex_table() {
     assert!(map.unwrap().is_empty());
 }
 
-#[tokio::test]
+#[tokio::test(flavor = "current_thread", start_paused = true)]
 async fn test_mutex_table_bg_cleanup() {
     let mutex_table = MutexTable::<String>::new_with_cleanup(
         1,

narwhal/primary/tests/epoch_change.rs

@@ -17,7 +17,7 @@ use tokio::sync::watch;
 use types::ReconfigureNotification;
 
 /// The epoch changes but the stake distribution and network addresses stay the same.
-#[tokio::test]
+#[tokio::test(flavor = "current_thread", start_paused = true)]
 async fn test_simple_epoch_change() {
     ensure_test_environment();
 

narwhal/primary/tests/integration_tests_validator_api.rs

@@ -847,7 +847,7 @@ async fn test_read_causal_unsigned_certificates() {
 /// from primary 2. All in all the end goal is to:
 /// * Primary 1 be able to retrieve both certificates 1 & 2 successfully
 /// * Primary 1 be able to fetch the payload for certificates 1 & 2
-#[tokio::test]
+#[tokio::test(flavor = "current_thread", start_paused = true)]
 async fn test_get_collections_with_missing_certificates() {
     // GIVEN keys for two primary nodes
     let fixture = CommitteeFixture::builder().randomize_ports(true).build();

narwhal/primary/tests/nodes_bootstrapping_tests.rs

@@ -5,7 +5,7 @@ use test_utils::cluster::{setup_tracing, Cluster};
 
 use types::{PublicKeyProto, RoundsRequest};
 
-#[tokio::test]
+#[tokio::test(flavor = "current_thread", start_paused = true)]
 async fn test_shutdown_bug() {
     // Enabled debug tracing so we can easily observe the
     // nodes logs.

narwhal/test-utils/src/tests/cluster_tests.rs

@@ -37,7 +37,7 @@ async fn basic_cluster_setup() {
     assert!(cluster.authorities().await.is_empty());
 }
 
-#[tokio::test]
+#[tokio::test(flavor = "current_thread", start_paused = true)]
 async fn cluster_setup_with_consensus_disabled() {
     ensure_test_environment();
     let mut cluster = Cluster::new(None, false);