From a913d90a32f4c9cc7fc95175b45a41bd4f8c13bd Mon Sep 17 00:00:00 2001
From: Lukas Taegert-Atkinson <lukas.taegert-atkinson@tngtech.com>
Date: Sun, 9 Jan 2022 09:09:21 +0100
Subject: [PATCH] Improve test reliability

---
 .../samples/watch/watch-config-early-update/_config.js    | 8 ++++----
 test/utils.js                                             | 7 ++++---
 2 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/test/cli/samples/watch/watch-config-early-update/_config.js b/test/cli/samples/watch/watch-config-early-update/_config.js
index 08b5799f33c..e11cdc741f3 100644
--- a/test/cli/samples/watch/watch-config-early-update/_config.js
+++ b/test/cli/samples/watch/watch-config-early-update/_config.js
@@ -1,10 +1,11 @@
 const fs = require('fs');
 const path = require('path');
-const { syncFile } = require('../../../../utils');
+const { writeAndSync } = require('../../../../utils');
 
 let configFile;
 
 module.exports = {
+	solo: true,
 	description: 'immediately reloads the config file if a change happens while it is parsed',
 	command: 'rollup -cw',
 	before() {
@@ -26,7 +27,7 @@ module.exports = {
                 format: 'es'
               }
             }),
-          3000
+          2000
         );
       });`
 		);
@@ -36,7 +37,7 @@ module.exports = {
 	},
 	abortOnStderr(data) {
 		if (data === 'initial\n') {
-			fs.writeFileSync(
+			writeAndSync(
 				configFile,
 				`
 				console.error('updated');
@@ -49,7 +50,6 @@ module.exports = {
 		    };
 		    `
 			);
-			syncFile(configFile);
 			return false;
 		}
 		if (data.includes(`created _actual${path.sep}output2.js`)) {
diff --git a/test/utils.js b/test/utils.js
index bebb306b5c6..7bd767d5751 100644
--- a/test/utils.js
+++ b/test/utils.js
@@ -16,7 +16,7 @@ exports.assertDirectoriesAreEqual = assertDirectoriesAreEqual;
 exports.assertFilesAreEqual = assertFilesAreEqual;
 exports.assertIncludes = assertIncludes;
 exports.atomicWriteFileSync = atomicWriteFileSync;
-exports.syncFile = syncFile;
+exports.writeAndSync = writeAndSync;
 exports.getFileNamesAndRemoveOutput = getFileNamesAndRemoveOutput;
 
 function normaliseError(error) {
@@ -235,8 +235,9 @@ function atomicWriteFileSync(filePath, contents) {
 }
 
 // It appears that on MacOS, it sometimes takes long for the file system to update
-function syncFile(filePath) {
-	const file = fs.openSync(filePath);
+function writeAndSync(filePath, contents) {
+	const file = fs.openSync(filePath, 'w');
+	fs.writeSync(file, contents);
 	fs.fsyncSync(file);
 	fs.closeSync(file);
 }