diff --git a/.gitignore b/.gitignore
index fb30aa3825..af660f8843 100644
--- a/.gitignore
+++ b/.gitignore
@@ -24,3 +24,11 @@ module/*
 logs/ClickLogs.log
 journalData/journalNotes.txt
 tasksdata/scheduleTasks.txt
+zoomdata/*
+
+text-ui-test/fooddata/*
+text-ui-test/journalData/*
+text-ui-test/logs/*
+text-ui-test/module/*
+text-ui-test/tasksdata/*
+text-ui-test/zoomdata/*
diff --git a/src/main/java/seedu/duke/commands/DeleteModuleCommand.java b/src/main/java/seedu/duke/commands/DeleteModuleCommand.java
index f3378a1909..252343a2c5 100644
--- a/src/main/java/seedu/duke/commands/DeleteModuleCommand.java
+++ b/src/main/java/seedu/duke/commands/DeleteModuleCommand.java
@@ -36,7 +36,7 @@ public DeleteModuleCommand(String commandArgs) {
     public void execute(Ui ui, Storage storage) throws ClickException, Exception {
         ModuleList moduleList = storage.storageModule.readDataFromFile();
         int moduleIndex = Integer.parseInt(commandArgs.strip()) - 1;
-        boolean isValidIndex = moduleIndex > 0 && moduleIndex < moduleList.getNumberOfModules();
+        boolean isValidIndex = (moduleIndex >= 0) && (moduleIndex < moduleList.getNumberOfModules());
         if (!isValidIndex) {
             throw new IllegalModuleIndexException();
         }
diff --git a/text-ui-test/EXPECTED.TXT b/text-ui-test/EXPECTED.TXT
index 71b5b38fea..2a23163015 100644
--- a/text-ui-test/EXPECTED.TXT
+++ b/text-ui-test/EXPECTED.TXT
@@ -29,39 +29,26 @@ creating new file...
 	What can I do for you?
 	__________________________________________________
 Nice.  I've added Samurai Burger to the list, with 433 calories!
-	__________________________________________________
 Nice.  I've added McFlurry to the list, with 165 calories!
-	__________________________________________________
 1st,You consumed  Samurai Burger , which has a calorie count of : 433!
 2nd,You consumed  McFlurry , which has a calorie count of : 165!
 Wow, that's a lot of food! Finished reading today's list
 You consumed 598 calories in total today!
-	__________________________________________________
 Added cs2113t | softwareengineering | Expected grade: A
-	__________________________________________________
 Added cs1231 | discrete structure
-	__________________________________________________
 Here are the modules in your list:
 1. cs2113t   |   softwareengineering   | Expected grade:   A
 2. cs1231  |  discrete structure  | Expected grade:  N/A
-	__________________________________________________
 I have deleted this module:
 cs1231  |  discrete structure  | Expected grade:  N/A
-	__________________________________________________
 Great you have added the note: Today's stuff
-	__________________________________________________
 Great you have added the entry: Random Observation
-	__________________________________________________
 The notebook Today's stuff contains:
 Random Observation
-	__________________________________________________
 Task has been added successfully!
-	__________________________________________________
 Here's your task list:
 1. sometask (on: 10-10-2021)
-	__________________________________________________
 Task has been deleted!
-	__________________________________________________
 	__________________________________________________
 	Bye. Hope to see you again soon!
 	__________________________________________________
diff --git a/zoomdata/zoom.txt b/zoomdata/zoom.txt
index 11d0ed9b93..c670355ab5 100644
--- a/zoomdata/zoom.txt
+++ b/zoomdata/zoom.txt
@@ -1,3 +1,4 @@
 CS2131-link
 CS2113T-link
 CS2343-CS2213
+sth-link