Added .getReferences

spec/git-repository-async-spec.js

@@ -470,4 +470,19 @@ describe('GitRepositoryAsync', () => {
       expect(hasBranch).toBe(false)
     })
   })
+
+  describe('.getReferences(path)', () => {
+    let workingDirectory
+    beforeEach(() => {
+      workingDirectory = copyRepository()
+      repo = GitRepositoryAsync.open(workingDirectory)
+    })
+
+    it('returns the heads, remotes, and tags', async () => {
+      const {heads, remotes, tags} = await repo.getReferences()
+      expect(heads.length).toBe(1)
+      expect(remotes.length).toBe(0)
+      expect(tags.length).toBe(0)
+    })
+  })
 })

src/git-repository-async.js

@@ -264,12 +264,28 @@ export default class GitRepositoryAsync {
   // * `path` An optional {String} path in the repository to get this information
   //   for, only needed if the repository has submodules.
   //
-  // Returns an {Object} with the following keys:
+  // Returns a {Promise} which resolves to an {Object} with the following keys:
   //  * `heads`   An {Array} of head reference names.
   //  * `remotes` An {Array} of remote reference names.
   //  * `tags`    An {Array} of tag reference names.
   getReferences (_path) {
-    throw new Error('Unimplemented')
+    return this._getRepo(_path)
+      .then(repo => repo.getReferences(Git.Reference.TYPE.LISTALL))
+      .then(refs => {
+        const heads = []
+        const remotes = []
+        const tags = []
+        for (const ref of refs) {
+          if (ref.isTag()) {
+            tags.push(ref.name())
+          } else if (ref.isRemote()) {
+            remotes.push(ref.name())
+          } else if (ref.isBranch()) {
+            heads.push(ref.name())
+          }
+        }
+        return {heads, remotes, tags}
+      })
   }
 
   // Public: Returns the current {String} SHA for the given reference.