Don't auto-sync skipped libraries on change

chrome/content/zotero/xpcom/sync/syncEventListeners.js

@@ -140,7 +140,11 @@ Zotero.Sync.EventListeners.AutoSyncListener = {
 			});
 		}
 		
-		if (!libraryIDs.size) {
+		// Don't include skipped libraries
+		var skipped = new Set(Zotero.Sync.Data.Local.getSkippedLibraries());
+		libraryIDs = Array.from(libraryIDs.values()).filter(id => !skipped.has(id));
+		
+		if (!libraryIDs.length) {
 			return;
 		}
 		
@@ -148,7 +152,7 @@ Zotero.Sync.EventListeners.AutoSyncListener = {
 			this._editTimeout,
 			false,
 			{
-				libraries: libraryIDs.values()
+				libraries: libraryIDs
 			}
 		);
 	},

test/tests/syncEventListenersTest.js

@@ -0,0 +1,48 @@
+"use strict";
+
+describe("Zotero.Sync.EventListeners", function () {
+	describe("AutoSyncListener", function () {
+		var originalTimeout;
+		
+		before(function () {
+			originalTimeout = Zotero.Sync.EventListeners.AutoSyncListener._editTimeout;
+			assert.ok(originalTimeout);
+			// Set timeout to 1ms
+			Zotero.Sync.EventListeners.AutoSyncListener._editTimeout = 0.001;
+			Zotero.Prefs.set('sync.autoSync', true);
+		});
+		
+		
+		after(function () {
+			Zotero.Sync.EventListeners.AutoSyncListener._editTimeout = originalTimeout;
+			Zotero.Prefs.set('sync.autoSync', false);
+			Zotero.Prefs.clear('sync.librariesToSkip');
+		});
+		
+		
+		it("should sync only changed library", function* () {
+			var mock = sinon.mock(Zotero.Sync.Runner);
+			var expectation = mock.expects("setSyncTimeout").once();
+			
+			var group = yield createGroup();
+			yield createDataObject('item', { libraryID: group.libraryID });
+			
+			yield Zotero.Promise.delay(10);
+			mock.verify();
+			assert.sameMembers(expectation.getCall(0).args[2].libraries, [group.libraryID]);
+		});
+		
+		
+		it("shouldn't sync skipped library", function* () {
+			var mock = sinon.mock(Zotero.Sync.Runner);
+			var expectation = mock.expects("setSyncTimeout").never();
+			
+			var group = yield createGroup();
+			Zotero.Prefs.set('sync.librariesToSkip', JSON.stringify(["L" + group.libraryID]));
+			yield createDataObject('item', { libraryID: group.libraryID });
+			
+			yield Zotero.Promise.delay(10);
+			mock.verify();
+		});
+	});
+});