Uniqueness test covers all five well-known account constants

coffer/units.py

@@ -52,6 +52,7 @@ ACCOUNT_COFFER = "company:coffer"
 ACCOUNT_NEW_INTERNET = "company:new-internet-co"
 ACCOUNT_LEORA = "agent:leora"
 ACCOUNT_SIGIL = "company:sigil"
+ACCOUNT_ORBIT = "company:orbit"  # Orbit: open-source CRM for agents; founder agent:orbit
 
 
 def agent_account(agent_id: str) -> str:

tests/test_companies.py

@@ -0,0 +1,20 @@
+import unittest
+
+from coffer.units import (
+    ACCOUNT_COFFER, ACCOUNT_LEORA, ACCOUNT_NEW_INTERNET, ACCOUNT_ORBIT, ACCOUNT_SIGIL, agent_account, company_account,
+)
+
+
+class CompanyAccountsTest(unittest.TestCase):
+    def test_orbit_company_book_is_separate_from_founder(self):
+        self.assertEqual(ACCOUNT_ORBIT, "company:orbit")
+        self.assertEqual(company_account("orbit"), ACCOUNT_ORBIT)
+        self.assertNotEqual(ACCOUNT_ORBIT, agent_account("orbit"))
+
+    def test_company_ids_unique(self):
+        ids = [ACCOUNT_COFFER, ACCOUNT_NEW_INTERNET, ACCOUNT_LEORA, ACCOUNT_SIGIL, ACCOUNT_ORBIT]
+        self.assertEqual(len(set(ids)), 5)
+
+
+if __name__ == "__main__":
+    unittest.main()