test(delete-branches): add groupName argument

lib/delete-branches.js

@@ -8,7 +8,7 @@ const githubQueue = require('./github-queue')
 // TODO: needs to take an optional `groupName` param
 module.exports = async function (
   { installationId, fullName, repositoryId },
-  { change, after, dependency, dependencyType }
+  { change, after, dependency, dependencyType, groupName }
 ) {
   if (change !== 'removed' && !semver.validRange(after)) return
   const { repositories } = await dbs()
@@ -25,17 +25,24 @@ module.exports = async function (
     'doc'
   )
 
-  // TODO: needs to filter branchDocs by optional `groupName` param,
-  // which is part of `branchDoc.head`
-
   const branchDocs = await Promise.all(
     _(branches)
-      .filter(
-        branch =>
-          change === 'removed' ||
-          semver.satisfies(branch.version, after) ||
-          semver.ltr(branch.version, after)
-      )
+    .filter(
+      branch =>
+      change === 'removed' || // include branch if dependency was removed
+      semver.satisfies(branch.version, after) || // include branch if update version satisfies branch version (branch is outdated)
+      semver.ltr(branch.version, after)// include branch if is not satisfied, but later (eg. update is an out of range major update)
+    )
+    .filter(
+      branch => {
+        // if groupName is passed in, only include branches of that group
+        // branch.head = 'greenkeeper/${groupName}/${dependency}'
+        if (groupName) {
+          return branch.head.includes(`greenkeeper/${groupName}/`)
+        } else {
+          return true
+        }
+      })
       .map(async branch => {
         let referenceDeleted = false
         try {

test/lib/delete-branches.js

@@ -189,6 +189,7 @@ test('delete-branches in monorepo', async () => {
     })
     .delete('/repos/brot/lecker/git/refs/heads/greenkeeper/backend/standard-9.0.0')
     .reply(200, () => {
+      // should not delete this one
       expect(true).toBeFalsy()
       return {}
     })