Fixes in get_item_details and test cases
diff --git a/erpnext/accounts/doctype/pricing_rule/pricing_rule.py b/erpnext/accounts/doctype/pricing_rule/pricing_rule.py
index 494e70c..fcc1f92 100644
--- a/erpnext/accounts/doctype/pricing_rule/pricing_rule.py
+++ b/erpnext/accounts/doctype/pricing_rule/pricing_rule.py
@@ -97,7 +97,10 @@
 		args = json.loads(args)
 
 	args = frappe._dict(args)
-
+	
+	if not args.transaction_type:
+		set_transaction_type(args)
+				
 	# list of dictionaries
 	out = []
 
@@ -134,13 +137,17 @@
 		if not args.item_group:
 			frappe.throw(_("Item Group not mentioned in item master for item {0}").format(args.item_code))
 
-	if args.customer and not (args.customer_group and args.territory):
-		customer = frappe.db.get_value("Customer", args.customer, ["customer_group", "territory"])
-		if customer:
-			args.customer_group, args.territory = customer
+	if args.transaction_type=="selling":
+		if args.customer and not (args.customer_group and args.territory):
+			customer = frappe.db.get_value("Customer", args.customer, ["customer_group", "territory"])
+			if customer:
+				args.customer_group, args.territory = customer
+				
+		args.supplier = args.supplier_type = None
 
 	elif args.supplier and not args.supplier_type:
 		args.supplier_type = frappe.db.get_value("Supplier", args.supplier, "supplier_type")
+		args.customer = args.customer_group = args.territory = None
 
 	pricing_rules = get_pricing_rules(args)
 	pricing_rule = filter_pricing_rules(args, pricing_rules)
@@ -212,7 +219,7 @@
 			and {transaction_type} = 1 {conditions}
 		order by priority desc, name desc""".format(
 			item_group_condition=item_group_condition,
-			transaction_type= "selling" if (args.customer or args.lead) else "buying",
+			transaction_type= args.transaction_type,
 			conditions=conditions), values, as_dict=1)
 
 def filter_pricing_rules(args, pricing_rules):
@@ -270,3 +277,14 @@
 			if filtered_rules: break
 
 	return filtered_rules or pricing_rules
+
+def set_transaction_type(args):
+	if args.doctype in ("Opportunity", "Quotation", "Sales Order", "Delivery Note", "Sales Invoice"):
+		args.transaction_type = "selling"
+	elif args.doctype in ("Material Request", "Supplier Quotation", "Purchase Order", 
+		"Purchase Receipt", "Purchase Invoice"):
+			args.transaction_type = "buying"
+	elif args.customer:
+		args.transaction_type = "selling"
+	else:
+		args.transaction_type = "buying"
\ No newline at end of file
diff --git a/erpnext/accounts/doctype/pricing_rule/test_pricing_rule.py b/erpnext/accounts/doctype/pricing_rule/test_pricing_rule.py
index 6edfaff..bdd7431 100644
--- a/erpnext/accounts/doctype/pricing_rule/test_pricing_rule.py
+++ b/erpnext/accounts/doctype/pricing_rule/test_pricing_rule.py
@@ -31,21 +31,22 @@
 			"company": "_Test Company",
 			"price_list": "_Test Price List",
 			"currency": "_Test Currency",
-			"parenttype": "Sales Order",
+			"doctype": "Sales Order",
 			"conversion_rate": 1,
 			"price_list_currency": "_Test Currency",
 			"plc_conversion_rate": 1,
 			"order_type": "Sales",
 			"customer": "_Test Customer",
-			"doctype": "Sales Order Item",
 			"name": None
 		})
 		details = get_item_details(args)
 		self.assertEquals(details.get("discount_percentage"), 10)
-
+		
 		prule = frappe.get_doc(test_record.copy())
 		prule.applicable_for = "Customer"
+		prule.title = "_Test Pricing Rule for Customer"
 		self.assertRaises(MandatoryError, prule.insert)
+		
 		prule.customer = "_Test Customer"
 		prule.discount_percentage = 20
 		prule.insert()
@@ -55,16 +56,18 @@
 		prule = frappe.get_doc(test_record.copy())
 		prule.apply_on = "Item Group"
 		prule.item_group = "All Item Groups"
+		prule.title = "_Test Pricing Rule for Item Group"
 		prule.discount_percentage = 15
 		prule.insert()
-
-		args.customer = None
+		
+		args.customer = "_Test Customer 1"
 		details = get_item_details(args)
 		self.assertEquals(details.get("discount_percentage"), 10)
 
 		prule = frappe.get_doc(test_record.copy())
 		prule.applicable_for = "Campaign"
 		prule.campaign = "_Test Campaign"
+		prule.title = "_Test Pricing Rule for Campaign"
 		prule.discount_percentage = 5
 		prule.priority = 8
 		prule.insert()
diff --git a/erpnext/controllers/accounts_controller.py b/erpnext/controllers/accounts_controller.py
index c3da6b2..5c84112 100644
--- a/erpnext/controllers/accounts_controller.py
+++ b/erpnext/controllers/accounts_controller.py
@@ -152,8 +152,8 @@
 					args = parent_dict.copy()
 					args.update(item.as_dict())
 
-					args["doctype"] = parent_dict.get("doctype")
-					args["name"] = parent_dict.get("name")
+					args["doctype"] = self.doctype
+					args["name"] = self.name
 
 					if not args.get("transaction_date"):
 						args["transaction_date"] = args.get("posting_date")
diff --git a/erpnext/selling/doctype/sales_order/test_sales_order.py b/erpnext/selling/doctype/sales_order/test_sales_order.py
index 3501f52..c6ea618 100644
--- a/erpnext/selling/doctype/sales_order/test_sales_order.py
+++ b/erpnext/selling/doctype/sales_order/test_sales_order.py
@@ -334,15 +334,15 @@
 		existing_ordered_qty = bin[0].ordered_qty if bin else 0.0
 		existing_reserved_qty = bin[0].reserved_qty if bin else 0.0
 
-		bin = frappe.get_all("Bin", filters={"item_code": dn_item.item_code, "warehouse": "_Test Warehouse - _TC"},
-			fields=["reserved_qty"])
+		bin = frappe.get_all("Bin", filters={"item_code": dn_item.item_code, 
+			"warehouse": "_Test Warehouse - _TC"}, fields=["reserved_qty"])
 
 		existing_reserved_qty_for_dn_item = bin[0].reserved_qty if bin else 0.0
 
 		#create so, po and partial dn
 		so = make_sales_order(item_list=so_items, do_not_submit=True)
 		so.submit()
-
+		
 		po = make_purchase_order_for_drop_shipment(so.name, '_Test Supplier')
 		po.submit()
 
diff --git a/erpnext/stock/doctype/item/test_item.py b/erpnext/stock/doctype/item/test_item.py
index 7538260..e5392d4 100644
--- a/erpnext/stock/doctype/item/test_item.py
+++ b/erpnext/stock/doctype/item/test_item.py
@@ -93,13 +93,14 @@
 			"price_list_currency": "_Test Currency",
 			"plc_conversion_rate": 1,
 			"order_type": "Sales",
+			"customer": "_Test Customer"
 		})
 
 		for key, value in to_check.iteritems():
 			self.assertEquals(value, details.get(key))
 
 	def test_make_item_variant(self):
-		frappe.delete_doc_if_exists("Item", "_Test Variant Item-L")
+		frappe.delete_doc_if_exists("Item", "_Test Variant Item-L", force=1)
 
 		variant = create_variant("_Test Variant Item", {"Test Size": "Large"})
 		variant.save()
diff --git a/erpnext/stock/get_item_details.py b/erpnext/stock/get_item_details.py
index 3819337..cc80d1e 100644
--- a/erpnext/stock/get_item_details.py
+++ b/erpnext/stock/get_item_details.py
@@ -6,7 +6,7 @@
 from frappe import _, throw
 from frappe.utils import flt, cint, add_days, cstr
 import json
-from erpnext.accounts.doctype.pricing_rule.pricing_rule import get_pricing_rule_for_item
+from erpnext.accounts.doctype.pricing_rule.pricing_rule import get_pricing_rule_for_item, set_transaction_type
 from erpnext.setup.utils import get_exchange_rate
 from frappe.model.meta import get_field_precision
 
@@ -84,6 +84,8 @@
 		args.item_code = get_item_code(barcode=args.barcode)
 	elif not args.item_code and args.serial_no:
 		args.item_code = get_item_code(serial_no=args.serial_no)
+	
+	set_transaction_type(args)
 
 	return args
 
@@ -107,7 +109,7 @@
 	from erpnext.stock.doctype.item.item import validate_end_of_life
 	validate_end_of_life(item.name, item.end_of_life, item.disabled)
 
-	if args.customer or args.doctype=="Opportunity":
+	if args.transaction_type=="selling":
 		# validate if sales item or service item
 		if args.get("order_type") == "Maintenance":
 			if item.is_service_item != 1:
@@ -119,7 +121,7 @@
 		if cint(item.has_variants):
 			throw(_("Item {0} is a template, please select one of its variants").format(item.name))
 
-	elif args.supplier and args.doctype != "Material Request":
+	elif args.transaction_type=="buying" and args.doctype != "Material Request":
 		# validate if purchase item or subcontracted item
 		if item.is_purchase_item != 1:
 			throw(_("Item {0} must be a Purchase Item").format(item.name))
@@ -219,7 +221,7 @@
 		out.price_list_rate = flt(price_list_rate) * flt(args.plc_conversion_rate) \
 			/ flt(args.conversion_rate)
 
-		if not out.price_list_rate and args.supplier:
+		if not out.price_list_rate and args.transaction_type=="buying":
 			from erpnext.stock.doctype.item.item import get_last_purchase_details
 			out.update(get_last_purchase_details(item_doc.name,
 				args.name, args.conversion_rate))
@@ -251,7 +253,7 @@
 def validate_price_list(args):
 	if args.get("price_list"):
 		if not frappe.db.get_value("Price List",
-			{"name": args.price_list, "selling" if (args.customer or args.lead) else "buying": 1, "enabled": 1}):
+			{"name": args.price_list, args.transaction_type: 1, "enabled": 1}):
 			throw(_("Price List {0} is disabled").format(args.price_list))
 	else:
 		throw(_("Price List not selected"))
@@ -283,10 +285,11 @@
 			frappe._dict({"fields": args})))
 
 def get_party_item_code(args, item_doc, out):
-	if args.customer:
+	if args.transaction_type=="selling" and args.customer:
 		customer_item_code = item_doc.get("customer_items", {"customer_name": args.customer})
 		out.customer_item_code = customer_item_code[0].ref_code if customer_item_code else None
-	else:
+		
+	if args.transaction_type=="buying" and args.supplier:
 		item_supplier = item_doc.get("supplier_items", {"supplier": args.supplier})
 		out.supplier_part_no = item_supplier[0].supplier_part_no if item_supplier else None