diff --git a/erpnext/selling/doctype/customer/test_customer.py b/erpnext/selling/doctype/customer/test_customer.py
index ac8815d..0d74d23 100644
--- a/erpnext/selling/doctype/customer/test_customer.py
+++ b/erpnext/selling/doctype/customer/test_customer.py
@@ -27,11 +27,6 @@
 	def test_party_details(self):
 		from erpnext.accounts.party import get_party_details
 
-		frappe.db.sql('delete from tabContact')
-		frappe.db.sql('delete from tabAddress')
-		frappe.db.sql('delete from `tabDynamic Link`')
-
-
 		to_check = {
 			'selling_price_list': None,
 			'customer_group': '_Test Customer Group',
diff --git a/erpnext/shopping_cart/cart.py b/erpnext/shopping_cart/cart.py
index a51f6f3..b427b94 100644
--- a/erpnext/shopping_cart/cart.py
+++ b/erpnext/shopping_cart/cart.py
@@ -160,6 +160,7 @@
 	return doc
 
 def _get_cart_quotation(party=None):
+	'''Return the open Quotation of type "Shopping Cart" or make a new one'''
 	if not party:
 		party = get_party()
 
diff --git a/erpnext/tests/utils.py b/erpnext/tests/utils.py
index 8d24f5e..7024b0d 100644
--- a/erpnext/tests/utils.py
+++ b/erpnext/tests/utils.py
@@ -6,28 +6,31 @@
 import frappe
 
 def create_test_contact_and_address():
-	if not frappe.db.exists('Address', '_Test Address for Customer-Office'):
-		frappe.get_doc(dict(
-			doctype='Address',
-			address_title='_Test Address for Customer',
-			address_type='Office',
-			address_line1='Station Road',
-			city='Mumbai',
-			country='India',
-			links = [dict(
-				link_doctype='Customer',
-				link_name='_Test Customer'
-			)]
-		)).insert()
+	frappe.db.sql('delete from tabContact')
+	frappe.db.sql('delete from tabAddress')
+	frappe.db.sql('delete from `tabDynamic Link`')
 
-	if not frappe.db.exists('Contact', '_Test Contact for _Test Customer-_Test Customer'):
-		frappe.get_doc(dict(
-			doctype='Contact',
-			email_id='test_contact_customer@example.com',
-			phone='+91 0000000000',
-			first_name='_Test Contact for _Test Customer',
-			links = [dict(
-				link_doctype='Customer',
-				link_name='_Test Customer'
-			)]
-		)).insert()
+	frappe.get_doc(dict(
+		doctype='Address',
+		address_title='_Test Address for Customer',
+		address_type='Office',
+		address_line1='Station Road',
+		city='_Test City',
+		state='Test State',
+		country='India',
+		links = [dict(
+			link_doctype='Customer',
+			link_name='_Test Customer'
+		)]
+	)).insert()
+
+	frappe.get_doc(dict(
+		doctype='Contact',
+		email_id='test_contact_customer@example.com',
+		phone='+91 0000000000',
+		first_name='_Test Contact for _Test Customer',
+		links = [dict(
+			link_doctype='Customer',
+			link_name='_Test Customer'
+		)]
+	)).insert()