[IMP] account_tax_balance: Ensure test correctness (2)

Tests failed if you don't have an account called 'Tax Paid' in your test DB, which
can happen when you are integrating tests in other environments, for example with
other starting language.

account_tax_balance/tests/test_account_tax_balance.py

@@ -34,8 +34,13 @@ class TestAccountTaxBalance(HttpCase):
         self.range = self.env['date.range']
 
     def test_tax_balance(self):
-        tax_account_id = self.env['account.account'].search(
-            [('name', '=', 'Tax Paid')], limit=1).id
+        tax_account_id = self.env['account.account'].create({
+            'name': 'Tax Paid',
+            'code': 'TAXTEST',
+            'user_type_id': self.env.ref(
+                'account.data_account_type_current_liabilities'
+            ).id,
+        }).id
         tax = self.env['account.tax'].create({
             'name': 'Tax 10.0%',
             'amount': 10.0,