Accommodate asynchronous editor saving

References: #615

test/4.5-hashbang.js

@@ -163,8 +163,8 @@ describe("Interpreter directives", () => {
 		afterEach(() => open("crystal").then(ed => {
 			if(editor){
 				editor.revertToCheckpoint(checkpoint);
-				editor.save();
-				atom.commands.dispatch(ed.editorElement, "core:close");
+				(editor.save() || Promise.resolve()).then(() =>
+					atom.commands.dispatch(ed.editorElement, "core:close"));
 			}
 		}));
 

test/spec-utils.js

@@ -131,16 +131,17 @@ function open(path){
  */
 function replaceText(find, replace){
 	return new Promise(resolve => {
+		const handler = () => {resolve(); done.dispose()};
 		const editor = atom.workspace.getActiveTextEditor();
-		const done = editor.onDidStopChanging(() => {
-			resolve();
-			done.dispose();
-		});
+		const done = editor.onDidStopChanging(handler);
 		editor.transact(100, () => {
 			editor.scan(find, args => args.replace(replace));
 		});
-		editor.save();
+		const saveResult = editor.save();
+		if(saveResult && saveResult instanceof Promise)
+			saveResult.then(handler);
 	})
+	.then(() => wait(100))
 	.then(() => TreeView.refreshHack());
 }
 
@@ -185,14 +186,14 @@ function resolvePath(path){
  */
 function revert(steps = 1){
 	return new Promise(resolve => {
+		const handler = () => {resolve(); done.dispose()};
 		const editor = atom.workspace.getActiveTextEditor();
-		const done = editor.onDidStopChanging(() => {
-			resolve();
-			done.dispose();
-		});
+		const done = editor.onDidStopChanging(handler);
 		for(let i = 0; i < steps; ++i)
 			editor.undo();
-		editor.save();
+		const saved = editor.save();
+		if(saved && saved instanceof Promise)
+			handler.call();
 	})
 	.then(() => TreeView.refreshHack());
 }