Test mux store... kinda

src/domain/acme/manager.rs

@@ -10,7 +10,7 @@ pub type GetHttp01ChallengeKeyError = acme::store::GetHttp01ChallengeKeyError;
 pub type GetCertificateError = acme::store::GetCertificateError;
 
 #[mockall::automock]
-pub trait Manager: Sync + Send {
+pub trait Manager {
     fn sync_domain<'mgr>(
         &'mgr self,
         domain: domain::Name,
@@ -24,55 +24,62 @@ pub trait Manager: Sync + Send {
     ) -> Result<(PrivateKey, Vec<Certificate>), GetCertificateError>;
 }
 
-struct ManagerImpl {
-    store: Box<dyn acme::store::Store>,
+pub struct ManagerImpl {
+    store: Box<dyn acme::store::Store + Send + Sync>,
     account: sync::Arc<acme2::Account>,
 }
 
-pub async fn new(
-    store: Box<dyn acme::store::Store>,
-    contact_email: &str,
-) -> Result<Box<dyn Manager>, unexpected::Error> {
-    let dir = acme2::DirectoryBuilder::new(LETS_ENCRYPT_URL.to_string())
-        .build()
-        .await
-        .or_unexpected_while("creating acme2 directory builder")?;
+impl ManagerImpl {
+    pub async fn new<Store: acme::store::Store + Send + Sync + 'static>(
+        store: Store,
+        contact_email: &str,
+    ) -> Result<Self, unexpected::Error> {
+        let dir = acme2::DirectoryBuilder::new(LETS_ENCRYPT_URL.to_string())
+            .build()
+            .await
+            .or_unexpected_while("creating acme2 directory builder")?;
 
-    let mut contact = String::from("mailto:");
-    contact.push_str(contact_email);
+        let mut contact = String::from("mailto:");
+        contact.push_str(contact_email);
 
-    let mut builder = acme2::AccountBuilder::new(dir);
-    builder.contact(vec![contact]);
-    builder.terms_of_service_agreed(true);
+        let mut builder = acme2::AccountBuilder::new(dir);
+        builder.contact(vec![contact]);
+        builder.terms_of_service_agreed(true);
 
-    match store.get_account_key() {
-        Ok(account_key) => {
-            builder.private_key(
-                (&account_key)
-                    .try_into()
-                    .or_unexpected_while("parsing private key")?,
-            );
+        match store.get_account_key() {
+            Ok(account_key) => {
+                builder.private_key(
+                    (&account_key)
+                        .try_into()
+                        .or_unexpected_while("parsing private key")?,
+                );
+            }
+            Err(acme::store::GetAccountKeyError::NotFound) => (),
+            Err(acme::store::GetAccountKeyError::Unexpected(err)) => {
+                return Err(err.into_unexpected())
+            }
         }
-        Err(acme::store::GetAccountKeyError::NotFound) => (),
-        Err(acme::store::GetAccountKeyError::Unexpected(err)) => return Err(err.into_unexpected()),
+
+        let account = builder
+            .build()
+            .await
+            .or_unexpected_while("building account")?;
+
+        let account_key: acme::PrivateKey = account
+            .private_key()
+            .as_ref()
+            .try_into()
+            .or_unexpected_while("parsing private key back out")?;
+
+        store
+            .set_account_key(&account_key)
+            .or_unexpected_while("storing account key")?;
+
+        Ok(Self {
+            store: Box::from(store),
+            account,
+        })
     }
-
-    let account = builder
-        .build()
-        .await
-        .or_unexpected_while("building account")?;
-
-    let account_key: acme::PrivateKey = account
-        .private_key()
-        .as_ref()
-        .try_into()
-        .or_unexpected_while("parsing private key back out")?;
-
-    store
-        .set_account_key(&account_key)
-        .or_unexpected_while("storing account key")?;
-
-    Ok(Box::new(ManagerImpl { store, account }))
 }
 
 impl Manager for ManagerImpl {

src/domain/acme/store.rs

@@ -38,7 +38,7 @@ pub enum GetCertificateError {
 }
 
 #[mockall::automock]
-pub trait Store: Sync + Send {
+pub trait Store {
     fn set_account_key(&self, k: &PrivateKey) -> Result<(), unexpected::Error>;
     fn get_account_key(&self) -> Result<PrivateKey, GetAccountKeyError>;
 
@@ -66,28 +66,29 @@ struct StoredPKeyCert {
     cert: Vec<Certificate>,
 }
 
-struct FSStore {
+pub struct FSStore {
     dir_path: path::PathBuf,
 }
 
-pub fn new(dir_path: &path::Path) -> Result<Box<dyn Store>, unexpected::Error> {
-    vec![
-        dir_path,
-        dir_path.join("http01_challenge_keys").as_ref(),
-        dir_path.join("certificates").as_ref(),
-    ]
-    .iter()
-    .map(|dir| {
-        fs::create_dir_all(dir).map_unexpected_while(|| format!("creating dir {}", dir.display()))
-    })
-    .try_collect()?;
-
-    Ok(Box::new(FSStore {
-        dir_path: dir_path.into(),
-    }))
-}
-
 impl FSStore {
+    pub fn new(dir_path: &path::Path) -> Result<Self, unexpected::Error> {
+        vec![
+            dir_path,
+            dir_path.join("http01_challenge_keys").as_ref(),
+            dir_path.join("certificates").as_ref(),
+        ]
+        .iter()
+        .map(|dir| {
+            fs::create_dir_all(dir)
+                .map_unexpected_while(|| format!("creating dir {}", dir.display()))
+        })
+        .try_collect()?;
+
+        Ok(Self {
+            dir_path: dir_path.into(),
+        })
+    }
+
     fn account_key_path(&self) -> path::PathBuf {
         self.dir_path.join("account.key")
     }
@@ -232,7 +233,7 @@ mod tests {
     #[test]
     fn account_key() {
         let tmp_dir = TempDir::new("domain_acme_store_account_key").unwrap();
-        let store = new(tmp_dir.path()).expect("store created");
+        let store = FSStore::new(tmp_dir.path()).expect("store created");
 
         assert!(matches!(
             store.get_account_key(),
@@ -254,7 +255,7 @@ mod tests {
     #[test]
     fn http01_challenge_key() {
         let tmp_dir = TempDir::new("domain_acme_store_http01_challenge_key").unwrap();
-        let store = new(tmp_dir.path()).expect("store created");
+        let store = FSStore::new(tmp_dir.path()).expect("store created");
 
         let token = "foo".to_string();
         let key = "bar".to_string();

src/domain/checker.rs

@@ -36,27 +36,27 @@ pub struct DNSChecker {
     client: tokio::sync::Mutex<AsyncClient>,
 }
 
-pub async fn new(
-    target_a: net::Ipv4Addr,
-    resolver_addr: &str,
-) -> Result<DNSChecker, NewDNSCheckerError> {
-    let resolver_addr = resolver_addr
-        .parse()
-        .map_err(|_| NewDNSCheckerError::InvalidResolverAddress)?;
-
-    let stream = udp::UdpClientStream::<tokio::net::UdpSocket>::new(resolver_addr);
-
-    let (client, bg) = AsyncClient::connect(stream).await.or_unexpected()?;
-
-    tokio::spawn(bg);
-
-    Ok(DNSChecker {
-        target_a,
-        client: tokio::sync::Mutex::new(client),
-    })
-}
-
 impl DNSChecker {
+    pub async fn new(
+        target_a: net::Ipv4Addr,
+        resolver_addr: &str,
+    ) -> Result<Self, NewDNSCheckerError> {
+        let resolver_addr = resolver_addr
+            .parse()
+            .map_err(|_| NewDNSCheckerError::InvalidResolverAddress)?;
+
+        let stream = udp::UdpClientStream::<tokio::net::UdpSocket>::new(resolver_addr);
+
+        let (client, bg) = AsyncClient::connect(stream).await.or_unexpected()?;
+
+        tokio::spawn(bg);
+
+        Ok(Self {
+            target_a,
+            client: tokio::sync::Mutex::new(client),
+        })
+    }
+
     pub async fn check_domain(
         &self,
         domain: &domain::Name,

src/domain/config.rs

@@ -39,24 +39,24 @@ pub enum SetError {
 }
 
 #[mockall::automock]
-pub trait Store: Sync + Send {
+pub trait Store {
     fn get(&self, domain: &domain::Name) -> Result<Config, GetError>;
     fn set(&self, domain: &domain::Name, config: &Config) -> Result<(), SetError>;
     fn all_domains(&self) -> Result<Vec<domain::Name>, unexpected::Error>;
 }
 
-struct FSStore {
+pub struct FSStore {
     dir_path: PathBuf,
 }
 
-pub fn new(dir_path: &Path) -> io::Result<Box<dyn Store>> {
-    fs::create_dir_all(dir_path)?;
-    Ok(Box::new(FSStore {
-        dir_path: dir_path.into(),
-    }))
-}
-
 impl FSStore {
+    pub fn new(dir_path: &Path) -> io::Result<Self> {
+        fs::create_dir_all(dir_path)?;
+        Ok(Self {
+            dir_path: dir_path.into(),
+        })
+    }
+
     fn config_dir_path(&self, domain: &domain::Name) -> PathBuf {
         self.dir_path.join(domain.as_str())
     }
@@ -116,7 +116,7 @@ impl Store for FSStore {
 
 #[cfg(test)]
 mod tests {
-    use super::*;
+    use super::{Store, *};
     use crate::domain;
     use crate::origin::Descr;
 
@@ -128,7 +128,7 @@ mod tests {
     fn basic() {
         let tmp_dir = TempDir::new("domain_config_store").unwrap();
 
-        let store = new(tmp_dir.path()).expect("store created");
+        let store = FSStore::new(tmp_dir.path()).expect("store created");
 
         let domain = domain::Name::from_str("foo.com").expect("domain parsed");
 

src/domain/manager.rs

@@ -145,59 +145,66 @@ pub trait Manager: Sync + Send + rustls::server::ResolvesServerCert {
     fn all_domains(&self) -> Result<Vec<domain::Name>, unexpected::Error>;
 }
 
-struct ManagerImpl {
-    origin_store: Box<dyn origin::store::Store>,
-    domain_config_store: Box<dyn config::Store>,
+pub struct ManagerImpl {
+    origin_store: Box<dyn origin::store::Store + Send + Sync>,
+    domain_config_store: Box<dyn config::Store + Send + Sync>,
     domain_checker: checker::DNSChecker,
-    acme_manager: Option<Box<dyn acme::manager::Manager>>,
+    acme_manager: Option<Box<dyn acme::manager::Manager + Send + Sync>>,
 }
 
-async fn sync_origins(origin_store: &dyn origin::store::Store, canceller: CancellationToken) {
-    let mut interval = tokio::time::interval(tokio::time::Duration::from_secs(20 * 60));
-    loop {
-        tokio::select! {
-        _ = interval.tick() => {
-            match origin_store.all_descrs() {
-                Ok(iter) => iter.into_iter(),
-                Err(err) => {
-                    log::error!("Error fetching origin descriptors: {err}");
-                    return;
+impl ManagerImpl {
+    pub fn new<
+        OriginStore: origin::store::Store + Send + Sync + 'static,
+        DomainConfigStore: config::Store + Send + Sync + 'static,
+        AcmeManager: acme::manager::Manager + Send + Sync + 'static,
+    >(
+        task_stack: &mut util::TaskStack<unexpected::Error>,
+        origin_store: OriginStore,
+        domain_config_store: DomainConfigStore,
+        domain_checker: checker::DNSChecker,
+        acme_manager: Option<AcmeManager>,
+    ) -> sync::Arc<dyn Manager> {
+        let manager = sync::Arc::new(ManagerImpl {
+            origin_store: Box::from(origin_store),
+            domain_config_store: Box::from(domain_config_store),
+            domain_checker: domain_checker,
+            acme_manager: acme_manager
+                .map(|m| Box::new(m) as Box<dyn acme::manager::Manager + Send + Sync>),
+        });
+
+        task_stack.push_spawn(|canceller| {
+            let manager = manager.clone();
+            async move { Ok(manager.sync_origins(canceller).await) }
+        });
+
+        manager
+    }
+
+    async fn sync_origins(&self, canceller: CancellationToken) {
+        let mut interval = tokio::time::interval(tokio::time::Duration::from_secs(20 * 60));
+        loop {
+            tokio::select! {
+            _ = interval.tick() => {
+                match self.origin_store.all_descrs() {
+                    Ok(iter) => iter.into_iter(),
+                    Err(err) => {
+                        log::error!("Error fetching origin descriptors: {err}");
+                        return;
+                    }
                 }
+                .for_each(|descr| {
+                    if let Err(err) = self.origin_store.sync(descr.clone(), origin::store::Limits {}) {
+                        log::error!("Failed to sync store for {:?}: {err}", descr);
+                        return;
+                    }
+                });
+            },
+            _ = canceller.cancelled() => return,
             }
-            .for_each(|descr| {
-                if let Err(err) = origin_store.sync(descr.clone(), origin::store::Limits {}) {
-                    log::error!("Failed to sync store for {:?}: {err}", descr);
-                    return;
-                }
-            });
-        },
-        _ = canceller.cancelled() => return,
         }
     }
 }
 
-pub fn new(
-    task_stack: &mut util::TaskStack<unexpected::Error>,
-    origin_store: Box<dyn origin::store::Store>,
-    domain_config_store: Box<dyn config::Store>,
-    domain_checker: checker::DNSChecker,
-    acme_manager: Option<Box<dyn acme::manager::Manager>>,
-) -> sync::Arc<dyn Manager> {
-    let manager = sync::Arc::new(ManagerImpl {
-        origin_store,
-        domain_config_store,
-        domain_checker,
-        acme_manager,
-    });
-
-    task_stack.push_spawn(|canceller| {
-        let manager = manager.clone();
-        async move { Ok(sync_origins(manager.origin_store.as_ref(), canceller).await) }
-    });
-
-    manager
-}
-
 impl Manager for ManagerImpl {
     fn get_config(&self, domain: &domain::Name) -> Result<config::Config, GetConfigError> {
         Ok(self.domain_config_store.get(domain)?)

src/error/unexpected.rs

@@ -1,7 +1,7 @@
 use std::fmt::Write;
 use std::{error, fmt};
 
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, PartialEq)]
 /// Error is a String which implements the Error trait. It is intended to be used in
 /// situations where the caller is being given an error they can't really handle, except to pass it
 /// along or log it.

src/lib.rs

@@ -1,5 +1,6 @@
 #![feature(result_option_inspect)]
 #![feature(iterator_try_collect)]
+#![feature(iter_collect_into)]
 
 pub mod domain;
 pub mod error;

src/main.rs

@@ -73,33 +73,38 @@ async fn main() {
         )
         .init();
 
-    let origin_store = domani::origin::store::git::new(config.origin_store_git_dir_path)
+    let origin_store = domani::origin::store::git::FSStore::new(config.origin_store_git_dir_path)
         .expect("git origin store initialization failed");
 
-    let domain_checker = domani::domain::checker::new(
+    let domain_checker = domani::domain::checker::DNSChecker::new(
         config.domain_checker_target_a,
         &config.domain_checker_resolver_addr,
     )
     .await
     .expect("domain checker initialization failed");
 
-    let domain_config_store = domani::domain::config::new(&config.domain_config_store_dir_path)
-        .expect("domain config store initialization failed");
+    let domain_config_store =
+        domani::domain::config::FSStore::new(&config.domain_config_store_dir_path)
+            .expect("domain config store initialization failed");
 
     let domain_acme_manager = if config.https_listen_addr.is_some() {
         let domain_acme_store_dir_path = config.domain_acme_store_dir_path.unwrap();
 
-        let domain_acme_store = domani::domain::acme::store::new(&domain_acme_store_dir_path)
-            .expect("domain acme store initialization failed");
+        let domain_acme_store =
+            domani::domain::acme::store::FSStore::new(&domain_acme_store_dir_path)
+                .expect("domain acme store initialization failed");
 
         // if https_listen_addr is set then domain_acme_contact_email is required, see the Cli/clap
         // settings.
         let domain_acme_contact_email = config.domain_acme_contact_email.unwrap();
 
         Some(
-            domani::domain::acme::manager::new(domain_acme_store, &domain_acme_contact_email)
-                .await
-                .expect("domain acme manager initialization failed"),
+            domani::domain::acme::manager::ManagerImpl::new(
+                domain_acme_store,
+                &domain_acme_contact_email,
+            )
+            .await
+            .expect("domain acme manager initialization failed"),
         )
     } else {
         None
@@ -107,7 +112,7 @@ async fn main() {
 
     let mut task_stack = domani::util::TaskStack::new();
 
-    let domain_manager = domani::domain::manager::new(
+    let domain_manager = domani::domain::manager::ManagerImpl::new(
         &mut task_stack,
         origin_store,
         domain_config_store,

src/origin/store.rs

@@ -3,13 +3,14 @@ use crate::origin;
 use std::sync;
 
 pub mod git;
+pub mod mux;
 
 #[derive(Clone, Copy)]
 pub struct Limits {
     // TODO storage limits
 }
 
-#[derive(thiserror::Error, Debug)]
+#[derive(thiserror::Error, Clone, Debug, PartialEq)]
 pub enum SyncError {
     #[error("invalid url")]
     InvalidURL,
@@ -24,7 +25,7 @@ pub enum SyncError {
     Unexpected(#[from] unexpected::Error),
 }
 
-#[derive(thiserror::Error, Debug)]
+#[derive(thiserror::Error, Clone, Debug, PartialEq)]
 pub enum GetError {
     #[error("not found")]
     NotFound,
@@ -33,7 +34,7 @@ pub enum GetError {
     Unexpected(#[from] unexpected::Error),
 }
 
-#[derive(thiserror::Error, Debug)]
+#[derive(thiserror::Error, Clone, Debug, PartialEq)]
 pub enum AllDescrsError {
     #[error(transparent)]
     Unexpected(#[from] unexpected::Error),
@@ -41,7 +42,7 @@ pub enum AllDescrsError {
 
 #[mockall::automock]
 /// Describes a storage mechanism for Origins. Each Origin is uniquely identified by its Descr.
-pub trait Store: Sync + Send {
+pub trait Store {
     /// If the origin is of a kind which can be updated, sync will pull down the latest version of
     /// the origin into the storage.
     fn sync(&self, descr: origin::Descr, limits: Limits) -> Result<(), SyncError>;
@@ -49,3 +50,21 @@ pub trait Store: Sync + Send {
     fn get(&self, descr: origin::Descr) -> Result<sync::Arc<dyn origin::Origin>, GetError>;
     fn all_descrs(&self) -> Result<Vec<origin::Descr>, AllDescrsError>;
 }
+
+pub fn new_mock() -> sync::Arc<sync::Mutex<MockStore>> {
+    sync::Arc::new(sync::Mutex::new(MockStore::new()))
+}
+
+impl Store for sync::Arc<sync::Mutex<MockStore>> {
+    fn sync(&self, descr: origin::Descr, limits: Limits) -> Result<(), SyncError> {
+        self.lock().unwrap().sync(descr, limits)
+    }
+
+    fn get(&self, descr: origin::Descr) -> Result<sync::Arc<dyn origin::Origin>, GetError> {
+        self.lock().unwrap().get(descr)
+    }
+
+    fn all_descrs(&self) -> Result<Vec<origin::Descr>, AllDescrsError> {
+        self.lock().unwrap().all_descrs()
+    }
+}

src/origin/store/git.rs

@@ -59,9 +59,9 @@ enum GetOriginError {
     Unexpected(#[from] unexpected::Error),
 }
 
-/// git::Store implements the Store trait for any Descr::Git based Origins. If any non-git
-/// Descrs are used then this implementation will panic.
-struct Store {
+/// Implements the Store trait for any Descr::Git based Origins, storing the git repos on disk. If
+/// any non-git Descrs are used then this implementation will panic.
+pub struct FSStore {
     dir_path: PathBuf,
 
     // to prevent against syncing the same origin more than once at a time, but still allowing
@@ -71,16 +71,16 @@ struct Store {
     origins: sync::RwLock<collections::HashMap<origin::Descr, sync::Arc<Origin>>>,
 }
 
-pub fn new(dir_path: PathBuf) -> io::Result<Box<dyn super::Store>> {
-    fs::create_dir_all(&dir_path)?;
-    Ok(Box::new(Store {
-        dir_path,
-        sync_guard: sync::Mutex::new(collections::HashMap::new()),
-        origins: sync::RwLock::new(collections::HashMap::new()),
-    }))
-}
+impl FSStore {
+    pub fn new(dir_path: PathBuf) -> io::Result<Self> {
+        fs::create_dir_all(&dir_path)?;
+        Ok(Self {
+            dir_path,
+            sync_guard: sync::Mutex::new(collections::HashMap::new()),
+            origins: sync::RwLock::new(collections::HashMap::new()),
+        })
+    }
 
-impl Store {
     fn repo_path(&self, descr: &origin::Descr) -> PathBuf {
         self.dir_path.join(descr.id())
     }
@@ -208,7 +208,7 @@ impl Store {
     }
 }
 
-impl super::Store for Store {
+impl super::Store for FSStore {
     fn sync(&self, descr: origin::Descr, limits: store::Limits) -> Result<(), store::SyncError> {
         // attempt to lock this descr for syncing, doing so within a new scope so the mutex
         // isn't actually being held for the whole method duration.
@@ -323,9 +323,7 @@ impl super::Store for Store {
 
 #[cfg(test)]
 mod tests {
-    use crate::origin::store;
-    use crate::origin::store::Store;
-    use crate::origin::{self, Origin};
+    use crate::origin::{self, store, store::Store};
     use tempdir::TempDir;
 
     #[test]
@@ -346,7 +344,7 @@ mod tests {
 
         let limits = store::Limits {};
 
-        let store = super::new(tmp_dir.path().to_path_buf()).expect("store created");
+        let store = super::FSStore::new(tmp_dir.path().to_path_buf()).expect("store created");
 
         store
             .sync(descr.clone(), limits)
@@ -383,13 +381,9 @@ mod tests {
         ));
         assert_eq!(into.len(), 0);
 
-        let descrs = store
-            .all_descrs()
-            .expect("all_descrs called")
-            .into_iter()
-            .collect::<Vec<Result<origin::Descr, store::AllDescrsError>>>();
+        let descrs = store.all_descrs().expect("all_descrs called");
 
         assert_eq!(1, descrs.len());
-        assert_eq!(&descr, descrs[0].as_ref().unwrap());
+        assert_eq!(descr, descrs[0]);
     }
 }

src/origin/store/mux.rs

@@ -0,0 +1,168 @@
+use crate::error::unexpected::Mappable;
+use crate::origin::{self, store};
+use std::sync;
+
+pub struct Store<F, S>
+where
+    S: store::Store + 'static,
+    F: Fn(&origin::Descr) -> Option<S> + Sync + Send,
+{
+    mapping_fn: F,
+    stores: Vec<S>,
+}
+
+impl<F, S> Store<F, S>
+where
+    S: store::Store + 'static,
+    F: Fn(&origin::Descr) -> Option<S> + Sync + Send,
+{
+    pub fn new(mapping_fn: F, stores: Vec<S>) -> Store<F, S> {
+        Store { mapping_fn, stores }
+    }
+}
+
+impl<F, S> store::Store for Store<F, S>
+where
+    S: store::Store + 'static,
+    F: Fn(&origin::Descr) -> Option<S> + Sync + Send,
+{
+    fn sync(&self, descr: origin::Descr, limits: store::Limits) -> Result<(), store::SyncError> {
+        (self.mapping_fn)(&descr)
+            .or_unexpected_while(format!("mapping {:?} to store", &descr))?
+            .sync(descr, limits)
+    }
+
+    fn get(&self, descr: origin::Descr) -> Result<sync::Arc<dyn origin::Origin>, store::GetError> {
+        (self.mapping_fn)(&descr)
+            .or_unexpected_while(format!("mapping {:?} to store", &descr))?
+            .get(descr)
+    }
+
+    fn all_descrs(&self) -> Result<Vec<origin::Descr>, store::AllDescrsError> {
+        let mut res = Vec::<origin::Descr>::new();
+
+        for store in self.stores.iter() {
+            store.all_descrs()?.into_iter().collect_into(&mut res);
+        }
+
+        Ok(res)
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use crate::origin::{self, store};
+    use mockall::predicate;
+    use std::sync;
+
+    struct Harness {
+        descr_a: origin::Descr,
+        descr_b: origin::Descr,
+        descr_unknown: origin::Descr,
+        store_a: sync::Arc<sync::Mutex<store::MockStore>>,
+        store_b: sync::Arc<sync::Mutex<store::MockStore>>,
+        store: Box<dyn store::Store>,
+    }
+
+    impl Harness {
+        fn new() -> Harness {
+            let descr_a = origin::Descr::Git {
+                url: "A".to_string(),
+                branch_name: "A".to_string(),
+            };
+
+            let descr_b = origin::Descr::Git {
+                url: "B".to_string(),
+                branch_name: "B".to_string(),
+            };
+
+            let store_a = store::new_mock();
+            let store_b = store::new_mock();
+
+            Harness {
+                descr_a: descr_a.clone(),
+                descr_b: descr_b.clone(),
+                descr_unknown: origin::Descr::Git {
+                    url: "X".to_string(),
+                    branch_name: "X".to_string(),
+                },
+                store_a: store_a.clone(),
+                store_b: store_b.clone(),
+                store: Box::from(super::Store::new(
+                    {
+                        let store_a = store_a.clone();
+                        let store_b = store_b.clone();
+                        move |descr| match descr {
+                            &origin::Descr::Git { ref url, .. } if url == "A" => {
+                                Some(store_a.clone())
+                            }
+                            &origin::Descr::Git { ref url, .. } if url == "B" => {
+                                Some(store_b.clone())
+                            }
+                            _ => None,
+                        }
+                    },
+                    vec![store_a.clone(), store_b.clone()],
+                )),
+            }
+        }
+    }
+
+    #[test]
+    fn sync() {
+        let h = Harness::new();
+
+        h.store_a
+            .lock()
+            .unwrap()
+            .expect_sync()
+            .with(predicate::eq(h.descr_a.clone()), predicate::always())
+            .times(1)
+            .return_const(Ok::<(), store::SyncError>(()));
+
+        assert_eq!(Ok(()), h.store.sync(h.descr_a.clone(), store::Limits {}));
+
+        h.store_b
+            .lock()
+            .unwrap()
+            .expect_sync()
+            .with(predicate::eq(h.descr_b.clone()), predicate::always())
+            .times(1)
+            .return_const(Ok::<(), store::SyncError>(()));
+
+        assert_eq!(Ok(()), h.store.sync(h.descr_b.clone(), store::Limits {}));
+
+        assert!(h
+            .store
+            .sync(h.descr_unknown.clone(), store::Limits {})
+            .is_err());
+    }
+
+    #[test]
+    fn all_descrs() {
+        let h = Harness::new();
+
+        h.store_a
+            .lock()
+            .unwrap()
+            .expect_all_descrs()
+            .times(1)
+            .return_const(Ok::<Vec<origin::Descr>, store::AllDescrsError>(vec![h
+                .descr_a
+                .clone()]));
+
+        h.store_b
+            .lock()
+            .unwrap()
+            .expect_all_descrs()
+            .times(1)
+            .return_const(Ok::<Vec<origin::Descr>, store::AllDescrsError>(vec![h
+                .descr_b
+                .clone()]));
+
+        assert_eq!(
+            Ok(vec![h.descr_a.clone(), h.descr_b.clone()]),
+            h.store.all_descrs(),
+        )
+    }
+}