[fixes and test case] test case to avoid duplicate customer name exection

erpnext/selling/doctype/customer/customer.py

@@ -6,7 +6,7 @@ import frappe
 from frappe.model.naming import make_autoname
 from frappe import _, msgprint, throw
 import frappe.defaults
-from frappe.utils import flt, cint, cstr
+from frappe.utils import flt, cint,
 from frappe.desk.reportview import build_match_conditions
 from erpnext.utilities.transaction_base import TransactionBase
 from erpnext.utilities.address_and_contact import load_address_and_contact
@@ -23,18 +23,18 @@ class Customer(TransactionBase):
 	def autoname(self):
 		cust_master_name = frappe.defaults.get_global_default('cust_master_name')
 		if cust_master_name == 'Customer Name':
-			self.name = self.get_cusotmer_name()
+			self.name = self.get_customer_name()
 		else:
 			if not self.naming_series:
 				frappe.throw(_("Series is mandatory"), frappe.MandatoryError)
 
 			self.name = make_autoname(self.naming_series+'.#####')
 			
-	def get_cusotmer_name(self):
+	def get_customer_name(self):
 		if frappe.db.get_value("Customer", self.customer_name):
 			count = frappe.db.sql("""select ifnull(max(SUBSTRING_INDEX(name, ' ', -1)), 0) from tabCustomer
 				 where name like  '%{0} - %'""".format(self.customer_name), as_list=1)[0][0]
-			count = cint(count)+ 1
+			count = cint(count) + 1
 			return "{0} - {1}".format(self.customer_name, cstr(count))
 		
 		return self.customer_name

erpnext/selling/doctype/customer/test_customer.py

@@ -73,8 +73,33 @@ class TestCustomer(unittest.TestCase):
 		from erpnext.selling.doctype.sales_order.test_sales_order import make_sales_order
 
 		so = make_sales_order(do_not_save= True)
+		
 		self.assertRaises(CustomerFrozen, so.save)
 
 		frappe.db.set_value("Customer", "_Test Customer", "is_frozen", 0)
 
 		so.save()
+	
+	def test_duplicate_customer(self):
+		if not frappe.db.get_value("Customer", "_Test Customer 1"):
+			test_customer_1 = frappe.get_doc({
+				 "customer_group": "_Test Customer Group",
+				 "customer_name": "_Test Customer 1",
+				 "customer_type": "Individual",
+				 "doctype": "Customer",
+				 "territory": "_Test Territory"
+			}).insert(ignore_permissions=True)
+		else:
+			test_customer_1 = frappe.get_doc("Customer", "_Test Customer 1")
+		
+		duplicate_customer = frappe.get_doc({
+			 "customer_group": "_Test Customer Group",
+			 "customer_name": "_Test Customer 1",
+			 "customer_type": "Individual",
+			 "doctype": "Customer",
+			 "territory": "_Test Territory"
+		}).insert(ignore_permissions=True)
+		
+		self.assertEquals("_Test Customer 1", test_customer_1.name)
+		self.assertEquals("_Test Customer 1 - 1", duplicate_customer.name)
+		self.assertEquals(test_customer_1.customer_name, duplicate_customer.customer_name)		

erpnext/shopping_cart/cart.py

@@ -303,6 +303,7 @@ def get_customer(user=None):
 		contact.insert(ignore_permissions=True)
 
 		return customer
+
 def get_address_docs(doctype=None, txt=None, filters=None, limit_start=0, limit_page_length=20, party=None):
 	if not party:
 		party = get_customer()