feat: PocketIC supports force and shared network (#4002)

Author: mraszyk

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 # UNRELEASED
 
+### feat: `dfx start --pocketic` supports `--force` and shared networks.
+
+`dfx start --pocketic` is now compatible with `--force` and shared networks.
+
 ### feat: error when using insecure identity on mainnet
 
 This used to be a warning. A hard error can abort the command so that no insecure state will be on the mainnet.

src/dfx-core/src/config/model/settings_digest.rs

@@ -41,10 +41,9 @@ struct ReplicaSettings {
 }
 
 #[derive(Serialize, Deserialize, PartialEq, Eq)]
-#[serde(tag = "type", rename_all = "snake_case")]
-enum BackendSettings<'a> {
-    Replica { settings: Cow<'a, ReplicaSettings> },
-    PocketIc,
+struct BackendSettings<'a> {
+    settings: Cow<'a, ReplicaSettings>,
+    pocketic: bool,
 }
 
 #[derive(Serialize, Deserialize, PartialEq, Eq)]
@@ -60,11 +59,7 @@ pub fn get_settings_digest(
     artificial_delay: u32,
     pocketic: bool,
 ) -> String {
-    let backend = if pocketic {
-        BackendSettings::PocketIc
-    } else {
-        get_replica_backend_settings(local_server_descriptor, artificial_delay)
-    };
+    let backend = get_replica_backend_settings(local_server_descriptor, artificial_delay, pocketic);
     let settings = Settings {
         ic_repo_commit: ic_repo_commit.into(),
         backend,
@@ -77,6 +72,7 @@ pub fn get_settings_digest(
 fn get_replica_backend_settings(
     local_server_descriptor: &LocalServerDescriptor,
     artificial_delay: u32,
+    pocketic: bool,
 ) -> BackendSettings {
     let http_handler = HttpHandlerSettings {
         port: if let Some(port) = local_server_descriptor.replica.port {
@@ -105,7 +101,8 @@ fn get_replica_backend_settings(
             .unwrap_or_default(),
         artificial_delay,
     };
-    BackendSettings::Replica {
+    BackendSettings {
         settings: Cow::Owned(replica_settings),
+        pocketic,
     }
 }

src/dfx/src/commands/start.rs

@@ -75,7 +75,7 @@ pub struct StartOpts {
     artificial_delay: u32,
 
     /// Start even if the network config was modified.
-    #[arg(long, conflicts_with = "pocketic")]
+    #[arg(long)]
     force: bool,
 
     /// A list of domains that can be served. These are used for canister resolution [default: localhost]
@@ -338,7 +338,7 @@ pub fn exec(
         &local_server_descriptor.scope,
         LocalNetworkScopeDescriptor::Shared { .. }
     );
-    if is_shared_network && !pocketic {
+    if is_shared_network {
         save_json_file(
             &local_server_descriptor.effective_config_path_by_settings_digest(),
             &effective_config,