From: Michael Orlitzky <michael@orlitzky.com>
Date: Tue, 15 Oct 2019 12:15:43 +0000 (-0400)
Subject: eja: fix a rank test to work on trivial algebras.
X-Git-Url: http://gitweb.michael.orlitzky.com/?a=commitdiff_plain;h=e55bb3635ce4f25e45c59e947c144910e03bd09b;p=sage.d.git

eja: fix a rank test to work on trivial algebras.
---

diff --git a/mjo/eja/eja_algebra.py b/mjo/eja/eja_algebra.py
index 6589575..56be0fa 100644
--- a/mjo/eja/eja_algebra.py
+++ b/mjo/eja/eja_algebra.py
@@ -686,11 +686,15 @@ class FiniteDimensionalEuclideanJordanAlgebra(CombinatorialFreeModule):
         TESTS:
 
         Ensure that every EJA that we know how to construct has a
-        positive integer rank::
+        positive integer rank, unless the algebra is trivial in
+        which case its rank will be zero::
 
             sage: set_random_seed()
-            sage: r = random_eja().rank()
-            sage: r in ZZ and r > 0
+            sage: J = random_eja()
+            sage: r = J.rank()
+            sage: r in ZZ
+            True
+            sage: r > 0 or (r == 0 and J.is_trivial())
             True
 
         """