# HG changeset patch
# User Sean Young <seannz@gmail.com>
# Date 1310837508 18000
# Node ID 6fdf4927fefc718333b169e0564665f2264de3f3
# Parent  71265f725b11038904c813e9949903c866b4d0f1
codesprint: Write 6 tests for isdefinite

diff --git a/scripts/linear-algebra/isdefinite.m b/scripts/linear-algebra/isdefinite.m
--- a/scripts/linear-algebra/isdefinite.m
+++ b/scripts/linear-algebra/isdefinite.m
@@ -63,3 +63,22 @@
   endif
 
 endfunction
+
+%!test
+%! A = [-1 0; 0 -1];
+%! assert (isdefinite (A), -1)
+
+%!test
+%! A = [1 0; 0 1];
+%! assert (isdefinite (A), 1)
+
+%!test
+%! A = [2 -1 0; -1 2 -1; 0 -1 2];
+%! assert (isdefinite (A), 1)
+
+%!test
+%! A = [1 0; 0 0];
+%! assert (isdefinite (A), 0)
+
+%!error isdefinite ()
+%!error isdefinite ([1 2; 3 4])
\ No newline at end of file