diff --git a/.github/helper/install.sh b/.github/helper/install.sh
new file mode 100644
index 0000000..2bd468b
--- /dev/null
+++ b/.github/helper/install.sh
@@ -0,0 +1,70 @@
+#!/bin/bash
+
+set -e
+
+# Check for merge conflicts before proceeding
+python -m compileall -f "${GITHUB_WORKSPACE}"
+if grep -lr --exclude-dir=node_modules "^<<<<<<< " "${GITHUB_WORKSPACE}"
+    then echo "Found merge conflicts"
+    exit 1
+fi
+
+cd ~ || exit
+
+echo "Setting Up System Dependencies..."
+
+sudo apt update
+
+sudo apt remove mysql-server mysql-client
+sudo apt install libcups2-dev redis-server mariadb-client
+
+install_whktml() {
+    wget -O /tmp/wkhtmltox.deb https://github.com/wkhtmltopdf/packaging/releases/download/0.12.6.1-2/wkhtmltox_0.12.6.1-2.jammy_amd64.deb
+    sudo apt install /tmp/wkhtmltox.deb
+}
+install_whktml &
+wkpid=$!
+
+pip install frappe-bench
+
+git clone "https://github.com/frappe/frappe" --branch "${FRAPPE_BRANCH}" --depth 1
+bench init --skip-assets --frappe-path ~/frappe --python "$(which python)" frappe-bench
+
+mkdir ~/frappe-bench/sites/test_site
+
+cp -r "${GITHUB_WORKSPACE}/.github/helper/site_config.json" ~/frappe-bench/sites/test_site/
+
+# Update MySQL/MariaDB credentials
+mariadb --host 127.0.0.1 --port 3306 -u root -ppassword -e "
+SET GLOBAL character_set_server = 'utf8mb4';
+SET GLOBAL collation_server = 'utf8mb4_unicode_ci';
+
+CREATE USER 'test_resilient'@'localhost' IDENTIFIED BY 'test_resilient';
+CREATE DATABASE test_resilient;
+GRANT ALL PRIVILEGES ON \`test_resilient\`.* TO 'test_resilient'@'localhost';
+
+FLUSH PRIVILEGES;
+"
+
+cd ~/frappe-bench || exit
+
+sed -i 's/watch:/# watch:/g' Procfile
+sed -i 's/schedule:/# schedule:/g' Procfile
+sed -i 's/socketio:/# socketio:/g' Procfile
+sed -i 's/redis_socketio:/# redis_socketio:/g' Procfile
+
+bench get-app erpnext --branch "${ERPNEXT_BRANCH}" --resolve-deps
+
+# Install the app using SSH
+bench get-app "git@github.com:${GITHUB_REPOSITORY}.git" --branch "${PR_BRANCH}"
+
+bench setup requirements --dev
+
+wait $wkpid
+
+bench use test_site
+bench start &
+bench reinstall --yes
+
+bench  install-app "${APP_NAME}"
+bench --site test_site add-to-hosts
diff --git a/.github/helper/site_config.json b/.github/helper/site_config.json
new file mode 100644
index 0000000..7c17d59
--- /dev/null
+++ b/.github/helper/site_config.json
@@ -0,0 +1,17 @@
+{
+ "db_host": "127.0.0.1",
+ "db_port": 3306,
+ "db_name": "test_frappe",
+ "db_password": "test_frappe",
+ "db_type": "mariadb",
+ "auto_email_id": "test@example.com",
+ "mail_server": "smtp.example.com",
+ "mail_login": "test@example.com",
+ "mail_password": "test",
+ "admin_password": "admin",
+ "root_login": "root",
+ "root_password": "password",
+ "host_name": "http://test_site:8000",
+ "install_apps": ["erpnext"],
+ "throttle_user_limit": 100
+}
diff --git a/payment_integration_utils/patches.txt b/payment_integration_utils/patches.txt
index f15c3a9..dc9d5e0 100644
--- a/payment_integration_utils/patches.txt
+++ b/payment_integration_utils/patches.txt
@@ -3,4 +3,6 @@
 # Read docs to understand patches: https://frappeframework.com/docs/v14/user/en/database-migrations
 
 [post_model_sync]
-# Patches added in this section will be executed after doctypes are migrated
\ No newline at end of file
+# Patches added in this section will be executed after doctypes are migrated
+execute:from payment_integration_utils.setup import create_custom_fields; create_custom_fields()
+payment_integration_utils.patches.delete_old_custom_fields
\ No newline at end of file
diff --git a/payment_integration_utils/patches/delete_old_custom_fields.py b/payment_integration_utils/patches/delete_old_custom_fields.py
new file mode 100644
index 0000000..88e52fc
--- /dev/null
+++ b/payment_integration_utils/patches/delete_old_custom_fields.py
@@ -0,0 +1,9 @@
+from payment_integration_utils.payment_integration_utils.setup import (
+    delete_custom_fields,
+)
+
+FIELDS_TO_DELETE = {"Payment Entry": ["is_auto_generated"]}
+
+
+def execute():
+    delete_custom_fields(FIELDS_TO_DELETE)
diff --git a/payment_integration_utils/patches/delete_old_property_setters.py b/payment_integration_utils/patches/delete_old_property_setters.py
new file mode 100644
index 0000000..8a1b448
--- /dev/null
+++ b/payment_integration_utils/patches/delete_old_property_setters.py
@@ -0,0 +1,9 @@
+from payment_integration_utils.payment_integration_utils.setup import (
+    delete_property_setters,
+)
+
+PROPERTY_SETTERS_TO_DELETE = []
+
+
+def execute():
+    delete_property_setters(PROPERTY_SETTERS_TO_DELETE)
diff --git a/payment_integration_utils/payment_integration_utils/constants/custom_fields.py b/payment_integration_utils/payment_integration_utils/constants/custom_fields.py
index b6ea667..16e54cf 100644
--- a/payment_integration_utils/payment_integration_utils/constants/custom_fields.py
+++ b/payment_integration_utils/payment_integration_utils/constants/custom_fields.py
@@ -136,21 +136,11 @@
             "print_hide": 1,
             "permlevel": PERMISSION_LEVEL.SEVEN.value,
         },
-        {
-            "fieldname": "is_auto_generated",
-            "label": "Is Auto Generated",
-            "fieldtype": "Check",
-            "insert_after": "online_payment_meta_data_section",
-            "hidden": 1,
-            "print_hide": 1,
-            "permlevel": PERMISSION_LEVEL.SEVEN.value,
-            "no_copy": 1,
-        },
         {
             "fieldname": "payment_authorized_by",
             "label": "Payment Authorized By",
             "fieldtype": "Data",
-            "insert_after": "is_auto_generated",
+            "insert_after": "online_payment_meta_data_section",
             "options": "Email",
             "description": "User who made the payment",
             "hidden": 1,
diff --git a/payment_integration_utils/payment_integration_utils/setup/__init__.py b/payment_integration_utils/payment_integration_utils/setup/__init__.py
index 2f6cd87..7b0ece2 100644
--- a/payment_integration_utils/payment_integration_utils/setup/__init__.py
+++ b/payment_integration_utils/payment_integration_utils/setup/__init__.py
@@ -208,7 +208,7 @@ def delete_custom_fields(custom_fields: dict):
     for doctype, fields in custom_fields.items():
         fieldnames = []
 
-        if isinstance(fields, list) and fields:
+        if fields and isinstance(fields, list):
             if isinstance(fields[0], str):
                 fieldnames = fields
             elif isinstance(fields[0], dict):
diff --git a/payment_integration_utils/payment_integration_utils/tests/test_auth.py b/payment_integration_utils/payment_integration_utils/tests/test_auth.py
new file mode 100644
index 0000000..444ac39
--- /dev/null
+++ b/payment_integration_utils/payment_integration_utils/tests/test_auth.py
@@ -0,0 +1 @@
+# TODO: test : payment_integration_utils/payment_integration_utils/utils/auth.py
diff --git a/payment_integration_utils/payment_integration_utils/tests/test_payment_entry.py b/payment_integration_utils/payment_integration_utils/tests/test_payment_entry.py
new file mode 100644
index 0000000..04baf5d
--- /dev/null
+++ b/payment_integration_utils/payment_integration_utils/tests/test_payment_entry.py
@@ -0,0 +1 @@
+# TODO: test: payment_integration_utils/payment_integration_utils/server_overrides/doctype/payment_entry.py
diff --git a/payment_integration_utils/payment_integration_utils/tests/test_utils.py b/payment_integration_utils/payment_integration_utils/tests/test_utils.py
new file mode 100644
index 0000000..c1f8af1
--- /dev/null
+++ b/payment_integration_utils/payment_integration_utils/tests/test_utils.py
@@ -0,0 +1,27 @@
+from frappe.tests.utils import FrappeTestCase
+
+from payment_integration_utils.payment_integration_utils.utils import (
+    paisa_to_rupees,
+    rupees_to_paisa,
+    to_hyphenated,
+)
+
+
+class TestUtils(FrappeTestCase):
+    def test_conversion(self):
+        # (100, 10000) => 100 Rupees = 10000 Paisa
+        data = [
+            (100, 10000),
+            (100.0, 10000),
+            (100.5, 10050),
+            (0.5, 50),
+            (79.9, 7990),
+            (0, 0),
+        ]
+        for rupees, paisa in data:
+            self.assertEqual(rupees_to_paisa(rupees), paisa)
+            self.assertEqual(paisa_to_rupees(paisa), rupees)
+
+    def test_to_hyphenated(self):
+        self.assertEqual(to_hyphenated("Hello World"), "Hello-World")
+        self.assertEqual(to_hyphenated("Hello World!"), "Hello-World-")
diff --git a/payment_integration_utils/payment_integration_utils/tests/test_validation.py b/payment_integration_utils/payment_integration_utils/tests/test_validation.py
new file mode 100644
index 0000000..b10be85
--- /dev/null
+++ b/payment_integration_utils/payment_integration_utils/tests/test_validation.py
@@ -0,0 +1,52 @@
+import re
+from unittest.mock import patch
+
+import frappe
+from frappe.tests.utils import FrappeTestCase
+
+from payment_integration_utils.payment_integration_utils.utils.validation import (
+    validate_ifsc_code,
+    validate_payment_mode,
+)
+
+
+class TestUtils(FrappeTestCase):
+    @patch("requests.get")
+    def test_ifsc_code(self, mock_get):
+        IN_VALID_CODE = "SBK0000001"
+
+        # Mock a failed response
+        mock_get.return_value.status_code = 404
+        self.assertFalse(validate_ifsc_code(IN_VALID_CODE))
+
+        # Mock a successful response
+        mock_get.return_value.status_code = 200
+        self.assertTrue(validate_ifsc_code("HDFC0000314"))
+
+        # Test throwing an exception
+        mock_get.return_value.status_code = 404
+        self.assertRaisesRegex(
+            frappe.exceptions.ValidationError,
+            re.compile(rf"Invalid IFSC Code:.*{IN_VALID_CODE}.*"),
+            validate_ifsc_code,
+            IN_VALID_CODE,
+            throw=True,
+        )
+
+    def test_payment_mode(self):
+        valid_modes = ["NEFT", "IMPS", "RTGS", "UPI", "Link"]
+
+        for mode in valid_modes:
+            self.assertTrue(validate_payment_mode(mode))
+
+        IN_VALID_MODE = "Crypto"
+        self.assertFalse(validate_payment_mode(IN_VALID_MODE))
+
+        # Test throwing an exception
+        self.assertRaisesRegex(
+            frappe.exceptions.ValidationError,
+            re.compile(r"Invalid Payment Mode:.* Must be one of:.*"),
+            validate_payment_mode,
+            IN_VALID_MODE,
+            throw=True,
+        )
diff --git a/payment_integration_utils/payment_integration_utils/utils/__init__.py b/payment_integration_utils/payment_integration_utils/utils/__init__.py
index fcaf4c9..00748fc 100644
--- a/payment_integration_utils/payment_integration_utils/utils/__init__.py
+++ b/payment_integration_utils/payment_integration_utils/utils/__init__.py
@@ -3,12 +3,7 @@
 
 import frappe
 from frappe import _
-from frappe.utils import (
-    DateTimeLikeObject,
-    add_to_date,
-    get_timestamp,
-    getdate,
-)
+from frappe.utils import DateTimeLikeObject, add_to_date, flt, get_timestamp, getdate
 
 from payment_integration_utils.constants import SECONDS_IN_A_DAY
 
@@ -89,13 +84,15 @@ def rupees_to_paisa(amount: float | int) -> int:
     Convert the given amount in Rupees to Paisa.
 
     :param amount: The amount in Rupees to be converted to Paisa.
-
     Example:
     ```
     rupees_to_paisa(100) ==> 10000
+    rupees_to_paisa(79.899) ==> 7990
+    rupees_to_paisa(79.9) ==> 7990
+
     ```
     """
-    return int(amount * 100)
+    return int(flt(amount, 2) * 100)
 
 
 def paisa_to_rupees(amount: int) -> int | float:
@@ -107,9 +104,10 @@ def paisa_to_rupees(amount: int) -> int | float:
     Example:
     ```
     paisa_to_rupees(10000) ==> 100
+    paisa_to_rupees(7990) ==> 79.9
     ```
     """
-    return amount / 100
+    return flt(amount / 100, 2)
 
 
 ################# HTML RELATED #################
diff --git a/payment_integration_utils/setup.py b/payment_integration_utils/setup.py
index b6cfa86..0115002 100644
--- a/payment_integration_utils/setup.py
+++ b/payment_integration_utils/setup.py
@@ -1,6 +1,8 @@
 import click
 import frappe
-from frappe.custom.doctype.custom_field.custom_field import create_custom_fields
+from frappe.custom.doctype.custom_field.custom_field import (
+    create_custom_fields as make_custom_fields,
+)
 
 from payment_integration_utils.payment_integration_utils.constants.custom_fields import (
     CUSTOM_FIELDS,
@@ -30,17 +32,33 @@
 ################### After Install ###################
 def setup_customizations():
     click.secho("Creating Roles and Permissions...", fg="blue")
-    make_roles_and_permissions(ROLES)
+    create_roles_and_permissions()
 
     click.secho("Creating Custom Fields...", fg="blue")
-    create_custom_fields(CUSTOM_FIELDS)
+    create_custom_fields()
 
     click.secho("Creating Property Setters...", fg="blue")
+    create_property_setters()
+
+    click.secho("Creating Workflows...", fg="blue")
+    create_workflows()
+
+
+# Note: separate functions are required to use in patches
+def create_roles_and_permissions():
+    make_roles_and_permissions(ROLES)
+
+
+def create_custom_fields():
+    make_custom_fields(CUSTOM_FIELDS)
+
+
+def create_property_setters():
     for property_setter in PROPERTY_SETTERS:
         frappe.make_property_setter(property_setter)
 
-    click.secho("Creating Workflows...", fg="blue")
 
+def create_workflows():
     # create states
     make_workflow_states(WORKFLOW_STATES)
 
diff --git a/payment_integration_utils/tests/__init__.py b/payment_integration_utils/tests/__init__.py
new file mode 100644
index 0000000..e69de29