Add getGroup() and createGroup() test support functions

getGroup() can be used to access a default group library for general
group tests. createGroup() can be used to create one for a particular
test or set of tests.

test/content/support.js

@@ -163,6 +163,30 @@ function waitForCallback(cb, interval, timeout) {
 	return deferred.promise;
 }
 
+
+/**
+ * Get a default group used by all tests that want one, creating one if necessary
+ */
+var getGroup = Zotero.lazy(function () {
+	return createGroup({
+		name: "My Group"
+	});
+});
+
+
+var createGroup = Zotero.Promise.coroutine(function* (props) {
+	props = props || {};
+	var group = new Zotero.Group;
+	group.id = Zotero.Utilities.rand(10000, 1000000);
+	group.name = props.name || "Test " + Zotero.Utilities.randomString();
+	group.description = props.description || "";
+	group.editable = props.editable || true;
+	group.filesEditable = props.filesEditable || true;
+	group.version = props.version || Zotero.Utilities.rand(1000, 10000);
+	yield group.save();
+	return group;
+});
+
 //
 // Data objects
 //

test/tests/groupsTest.js

@@ -1,17 +1,9 @@
 describe("Zotero.Groups", function () {
 	describe("#get()", function () {
 		it("should retrieve a newly created group", function* () {
-			var group = new Zotero.Group;
-			group.id = 1851251;
-			group.libraryID = yield Zotero.ID.get('libraries');
-			group.name = "Test";
-			group.description = "";
-			group.editable = true;
-			group.filesEditable = true;
-			group.version = 1234;
 			try {
-				yield group.save();
+				var group = yield createGroup();
-				assert.equal(Zotero.Groups.get(1851251), group)
+				assert.equal(Zotero.Groups.get(group.id), group)
 			}
 			finally {
 				if (group) {