Massively speed up tests

- Make a copy of the database after first initialization that can be
  swapped in when reinitializing in resetDB()
- Avoid unnecessary one-second delay on every reset

Probably more that can be done, but this should take minutes off the
test runs

chrome/content/zotero/xpcom/schema.js

@@ -331,7 +331,7 @@ Zotero.Schema = new function(){
 						}, 250);
 					}
 				}
-			}.bind(this), 1000);
+			}.bind(this), Zotero.isStandalone ? 1000 : 0);
 		});
 		
 		return updated;

test/content/runtests.js

@@ -276,13 +276,15 @@ if (run && ZoteroUnit.tests) {
 }
 
 if(run) {
-	window.onload = function() {
+	window.onload = async function () {
-		Zotero.spawn(function* () {
+		await Zotero.Schema.schemaUpdatePromise;
-			yield Zotero.Schema.schemaUpdatePromise;
+		
+		// Make a copy of the database that can be used in resetDB()
+		var dbFile = Zotero.DataDirectory.getDatabase();
+		await OS.File.copy(dbFile, dbFile + '-test-template');
 		
 		initPDFToolsPath();
 		
 		return mocha.run();
-		})
 	};
 }

test/content/support.js

@@ -623,10 +623,11 @@ async function resetDB(options = {}) {
 	}
 	var db = Zotero.DataDirectory.getDatabase();
 	await Zotero.reinit(
-		Zotero.Promise.coroutine(function* () {
+		async function () {
-			yield OS.File.remove(db);
+			// Swap in the initial copy we made of the DB
+			await OS.File.copy(db + '-test-template', db);
 			_defaultGroup = null;
-		}),
+		},
 		false,
 		options
 	);

test/tests/supportTest.js

@@ -1,10 +1,12 @@
 describe("Support Functions for Unit Testing", function() {
 	describe("resetDB", function() {
-		it("should restore the DB to factory settings", function* () {
+		it("should restore the DB to factory settings", async function () {
-			yield resetDB({
+			await Zotero.DB.queryAsync("CREATE TABLE testTable (foo INTEGER PRIMARY KEY)");
+			assert.isTrue(await Zotero.DB.tableExists('testTable'));
+			await resetDB({
 				thisArg: this
 			});
-			assert.equal((yield Zotero.DB.valueQueryAsync("SELECT COUNT(*) FROM items")), 0);
+			assert.isFalse(await Zotero.DB.tableExists('testTable'));
 		});
 	});
 	describe("loadSampleData", function() {