fixes how config value is changed in tests

Author: Rishabh

src/test/java/io/supertokens/storage/postgresql/test/Utils.java

@@ -80,7 +80,8 @@ static void reset() {
         Main.makeConsolePrintSilent = true;
         String installDir = "../";
         try {
-            // if the default config is not the same as the current config, we must reset the storage layer
+            // if the default config is not the same as the current config, we must reset
+            // the storage layer
             File ogConfig = new File("../temp/config.yaml");
             File currentConfig = new File("../config.yaml");
             if (currentConfig.isFile()) {
@@ -129,11 +130,12 @@ public void write(int b) {
     }
 
     public static void setValueInConfig(String key, String value) throws FileNotFoundException, IOException {
-        // we close the storage layer since there might be a change in the db related config.
+        // we close the storage layer since there might be a change in the db related
+        // config.
         StorageLayer.close();
 
-        String oldStr = "((#\\s)?)" + key + "(:|((:\\s).+))\n";
-        String newStr = key + ": " + value + "\n";
+        String oldStr = "\n((#\\s)?)" + key + "(:|((:\\s).+))\n";
+        String newStr = "\n" + key + ": " + value + "\n";
         StringBuilder originalFileContent = new StringBuilder();
         try (BufferedReader reader = new BufferedReader(new FileReader("../config.yaml"))) {
             String currentReadingLine = reader.readLine();
@@ -149,11 +151,12 @@ public static void setValueInConfig(String key, String value) throws FileNotFoun
     }
 
     public static void commentConfigValue(String key) throws IOException {
-        // we close the storage layer since there might be a change in the db related config.
+        // we close the storage layer since there might be a change in the db related
+        // config.
         StorageLayer.close();
 
-        String oldStr = "((#\\s)?)" + key + "(:|((:\\s).+))\n";
-        String newStr = "# " + key + ":";
+        String oldStr = "\n((#\\s)?)" + key + "(:|((:\\s).+))\n";
+        String newStr = "\n# " + key + ":";
 
         StringBuilder originalFileContent = new StringBuilder();
         try (BufferedReader reader = new BufferedReader(new FileReader("../config.yaml"))) {