# HG changeset patch
# User Santeri Piippo
# Date 1516638205 -7200
# Node ID 1b9645b7ddb01282eaeed5301aa487cfa4894c9a
# Parent  9bb00170780ba1ed4c7bc23dd0f8bf2845a8548a
added matrix all zero test

diff -r 9bb00170780b -r 1b9645b7ddb0 tests/subfiles.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/subfiles.py	Mon Jan 22 18:23:25 2018 +0200
@@ -0,0 +1,18 @@
+from testsuite import error
+
+def determinant_test(model):
+    yield from [
+        error(subfile_reference, 'zero-determinant')
+        for subfile_reference in model.subfile_references
+        if abs(subfile_reference.matrix.determinant() - 0) < 1e-15
+    ]
+
+manifest = {
+    'tests': {
+        'determinant': determinant_test,
+    },
+    'messages': {
+        'zero-determinant': 'matrix determinant is zero '
+            '(row or column all zero)',
+    },
+}