node: Implement project checkout

Signed-off-by: Alexis Sellier <self@cloudhead.io>

node/src/test/arbitrary.rs

@@ -1,6 +1,7 @@
 use std::collections::{BTreeMap, HashSet};
 use std::hash::Hash;
 use std::ops::RangeBounds;
+use std::path::PathBuf;
 
 use nonempty::NonEmpty;
 use quickcheck::Arbitrary;
@@ -56,8 +57,14 @@ impl Arbitrary for Project {
         let doc = Doc::arbitrary(g);
         let id = doc.write(&mut buf).unwrap();
         let remotes = storage::Remotes::arbitrary(g);
+        let path = PathBuf::arbitrary(g);
 
-        Self { id, doc, remotes }
+        Self {
+            id,
+            doc,
+            remotes,
+            path,
+        }
     }
 }
 

node/src/test/fixtures.rs

@@ -63,6 +63,18 @@ pub fn storage<P: AsRef<Path>>(path: P) -> Storage {
     storages.pop().unwrap()
 }
 
+/// Creates a regular repository at the given path with a couple of commits.
+pub fn repository<P: AsRef<Path>>(path: P) -> git2::Repository {
+    let repo = git2::Repository::init(path).unwrap();
+    {
+        let sig = git2::Signature::now("anonymous", "anonymous@radicle.xyz").unwrap();
+        let head = git::initial_commit(&repo, &sig).unwrap();
+        let head = git::commit(&repo, &head, "Second commit", "anonymous").unwrap();
+        let _branch = repo.branch("master", &head, false).unwrap();
+    }
+    repo
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;