From b53dcb04ed2e25e4ef5398ba0fcfef6ab0049200 Mon Sep 17 00:00:00 2001
From: s-aga-r <sagarsharma.s312@gmail.com>
Date: Wed, 8 Mar 2023 14:00:06 +0530
Subject: [PATCH] test: add test cases for `BOM Stock Report`

---
 .../bom_stock_report/test_bom_stock_report.py | 108 ++++++++++++++++++
 1 file changed, 108 insertions(+)
 create mode 100644 erpnext/manufacturing/report/bom_stock_report/test_bom_stock_report.py

diff --git a/erpnext/manufacturing/report/bom_stock_report/test_bom_stock_report.py b/erpnext/manufacturing/report/bom_stock_report/test_bom_stock_report.py
new file mode 100644
index 0000000000..1c56ebe24d
--- /dev/null
+++ b/erpnext/manufacturing/report/bom_stock_report/test_bom_stock_report.py
@@ -0,0 +1,108 @@
+# Copyright (c) 2022, Frappe Technologies Pvt. Ltd. and contributors
+# For license information, please see license.txt
+
+
+import frappe
+from frappe.exceptions import ValidationError
+from frappe.tests.utils import FrappeTestCase
+from frappe.utils import floor
+
+from erpnext.manufacturing.doctype.production_plan.test_production_plan import make_bom
+from erpnext.manufacturing.report.bom_stock_report.bom_stock_report import (
+	get_bom_stock as bom_stock_report,
+)
+from erpnext.stock.doctype.item.test_item import make_item
+from erpnext.stock.doctype.stock_entry.test_stock_entry import make_stock_entry
+
+
+class TestBomStockReport(FrappeTestCase):
+	def setUp(self):
+		self.warehouse = "_Test Warehouse - _TC"
+		self.fg_item, self.rm_items = create_items()
+		make_stock_entry(target=self.warehouse, item_code=self.rm_items[0], qty=20, basic_rate=100)
+		make_stock_entry(target=self.warehouse, item_code=self.rm_items[1], qty=40, basic_rate=200)
+		self.bom = make_bom(item=self.fg_item, quantity=1, raw_materials=self.rm_items, rm_qty=10)
+
+	def test_bom_stock_report(self):
+		# Test 1: When `qty_to_produce` is 0.
+		filters = frappe._dict(
+			{
+				"bom": self.bom.name,
+				"warehouse": "Stores - _TC",
+				"qty_to_produce": 0,
+			}
+		)
+		self.assertRaises(ValidationError, bom_stock_report, filters)
+
+		# Test 2: When stock is not available.
+		data = bom_stock_report(
+			frappe._dict(
+				{
+					"bom": self.bom.name,
+					"warehouse": "Stores - _TC",
+					"qty_to_produce": 1,
+				}
+			)
+		)
+		expected_data = get_expected_data(self.bom, "Stores - _TC", 1)
+		self.assertSetEqual(set(tuple(x) for x in data), set(tuple(x) for x in expected_data))
+
+		# Test 3: When stock is available.
+		data = bom_stock_report(
+			frappe._dict(
+				{
+					"bom": self.bom.name,
+					"warehouse": self.warehouse,
+					"qty_to_produce": 1,
+				}
+			)
+		)
+		expected_data = get_expected_data(self.bom, self.warehouse, 1)
+		self.assertSetEqual(set(tuple(x) for x in data), set(tuple(x) for x in expected_data))
+
+
+def create_items():
+	fg_item = make_item(properties={"is_stock_item": 1}).name
+	rm_item1 = make_item(
+		properties={
+			"is_stock_item": 1,
+			"standard_rate": 100,
+			"opening_stock": 100,
+			"last_purchase_rate": 100,
+		}
+	).name
+	rm_item2 = make_item(
+		properties={
+			"is_stock_item": 1,
+			"standard_rate": 200,
+			"opening_stock": 200,
+			"last_purchase_rate": 200,
+		}
+	).name
+
+	return fg_item, [rm_item1, rm_item2]
+
+
+def get_expected_data(bom, warehouse, qty_to_produce, show_exploded_view=False):
+	expected_data = []
+
+	for item in bom.get("exploded_items") if show_exploded_view else bom.get("items"):
+		in_stock_qty = frappe.get_cached_value(
+			"Bin", {"item_code": item.item_code, "warehouse": warehouse}, "actual_qty"
+		)
+
+		expected_data.append(
+			[
+				item.item_code,
+				item.description,
+				item.stock_qty,
+				item.stock_uom,
+				item.stock_qty * qty_to_produce / bom.quantity,
+				in_stock_qty,
+				floor(in_stock_qty / (item.stock_qty * qty_to_produce / bom.quantity))
+				if in_stock_qty
+				else None,
+			]
+		)
+
+	return expected_data