[test] check the finance book via the journal entry

erpnext/accounts/doctype/finance_book/test_finance_book.py

@@ -2,9 +2,42 @@
 # Copyright (c) 2018, Frappe Technologies Pvt. Ltd. and Contributors
 # See license.txt
 from __future__ import unicode_literals
+from erpnext.accounts.doctype.journal_entry.test_journal_entry import make_journal_entry
+
 
 import frappe
 import unittest
 
 class TestFinanceBook(unittest.TestCase):
-	pass
+	def create_finance_book(self):
+		if not frappe.db.exists("Finance Book", "_Test Finance Book"):
+			finance_book = frappe.get_doc({
+				"doctype": "Finance Book",
+				"finance_book_name": "_Test Finance Book"
+			}).insert()
+		else:
+			finance_book = frappe.get_doc("Finance Book", "_Test Finance Book")
+
+		return finance_book
+	
+	def test_finance_book(self):
+		finance_book = self.create_finance_book()
+
+		# create jv entry
+		jv = make_journal_entry("_Test Bank - _TC",
+			"_Test Receivable - _TC", 100, save=False)
+
+		jv.accounts[1].update({
+			"party_type": "Customer",
+			"party": "_Test Customer USD"
+		})
+
+		jv.finance_book = finance_book.finance_book_name
+		jv.submit()
+
+		# check the Finance Book in the GL Entry
+		gl_entries = frappe.get_all("GL Entry", fields=["name", "finance_book"],
+			filters={"voucher_type": "Journal Entry", "voucher_no": jv.name})
+
+		for gl_entry in gl_entries:
+			self.assertEqual(gl_entry.finance_book, finance_book.name)