From aa4f38b60a5925cf645bf900f2c9d3e3a1285d6b Mon Sep 17 00:00:00 2001
From: Johannes Pfeifer <jpfeifer@gmx,de>
Date: Sat, 13 Sep 2014 11:56:28 +0200
Subject: [PATCH] Add unit test to filter out incorrectly accepted steady state

---
 tests/Makefile.am                             |  3 ++-
 .../steady_state/Linear_steady_state_fail.mod | 23 +++++++++++++++++++
 2 files changed, 25 insertions(+), 1 deletion(-)
 create mode 100644 tests/steady_state/Linear_steady_state_fail.mod

diff --git a/tests/Makefile.am b/tests/Makefile.am
index 1eefe3098..9d44221c8 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -226,7 +226,8 @@ MODFILES = \
 
 XFAIL_MODFILES = ramst_xfail.mod \
 	estim_param_in_shock_value_xfail.mod \
-	optimal_policy/Ramsey/ramsey_ex_wrong_ss_file_xfail.mod
+	optimal_policy/Ramsey/ramsey_ex_wrong_ss_file_xfail.mod \
+	steady_state/run_linear_steady_state_fail_test.mod
 
 MFILES = initval_file/ramst_initval_file_data.m
 
diff --git a/tests/steady_state/Linear_steady_state_fail.mod b/tests/steady_state/Linear_steady_state_fail.mod
new file mode 100644
index 000000000..501a9b4af
--- /dev/null
+++ b/tests/steady_state/Linear_steady_state_fail.mod
@@ -0,0 +1,23 @@
+// Test whether a nonlinear equation specfied as a linear model is correctly filtered out
+var A;
+
+varexo epsilona;
+parameters  rho;
+
+rho =   .42; 
+
+model(linear);
+log(A) = rho*log(A(-1)) + epsilona;
+end;
+
+initval;
+    A = 1.34;
+end;
+
+steady;
+
+
+
+
+
+