removeSite should also remove its children

js/state/siteUtil.js

@@ -159,7 +159,18 @@ module.exports.removeSite = function (sites, siteDetail, tag) {
   if (index === -1) {
     return sites
   }
+
   const tags = sites.getIn([index, 'tags'])
+  if (isBookmarkFolder(tags)) {
+    const folderId = sites.getIn([index, 'folderId'])
+    const childSites = sites.filter((site) => site.get('parentFolderId') === folderId)
+    childSites.forEach((site) => {
+      const tags = site.get('tags')
+      tags.forEach((tag) => {
+        sites = module.exports.removeSite(sites, site, tag)
+      })
+    })
+  }
   if (tags.size === 0 && !tag) {
     // If called without tags and entry has no tags, remove the entry
     return sites.splice(index, 1)

test/unit/state/siteUtilTest.js

@@ -251,6 +251,60 @@ describe('siteUtil', function () {
           .setIn([0, 'tags'], Immutable.List([]))
         assert.deepEqual(processedSites, expectedSites)
       })
+      it('removes folder and its children', function () {
+        const sites = Immutable.fromJS([
+          {
+            folderId: 1,
+            parentFolderId: 0,
+            tags: [siteTags.BOOKMARK_FOLDER]
+          },
+          {
+            folderId: 2,
+            parentFolderId: 1,
+            tags: [siteTags.BOOKMARK_FOLDER]
+          },
+          {
+            parentFolderId: 1,
+            location: testUrl1,
+            tags: [siteTags.BOOKMARK]
+          },
+          {
+            parentFolderId: 2,
+            location: testUrl2,
+            tags: [siteTags.BOOKMARK]
+          }
+        ])
+        const siteDetail = {
+          folderId: 1,
+          parentFolderId: 0,
+          tags: [siteTags.BOOKMARK_FOLDER]
+        }
+        const processedSites = siteUtil.removeSite(sites, Immutable.fromJS(siteDetail), siteTags.BOOKMARK_FOLDER)
+        const expectedSites = Immutable.fromJS([
+          {
+            folderId: 1,
+            parentFolderId: 0,
+            tags: Immutable.List([])
+          },
+          {
+            folderId: 2,
+            parentFolderId: 0,
+            tags: Immutable.List([])
+          },
+          {
+            parentFolderId: 0,
+            location: testUrl1,
+            tags: Immutable.List([])
+          },
+          {
+            parentFolderId: 0,
+            location: testUrl2,
+            tags: Immutable.List([])
+          }
+        ])
+        // toJS needed because immutable ownerID :(
+        assert.deepEqual(processedSites.toJS(), expectedSites.toJS())
+      })
     })
     describe('tag=falsey', function () {
       it('deletes a history entry (has no tags)', function () {