diff --git a/gtsam/navigation/tests/testScenario.cpp b/gtsam/navigation/tests/testScenario.cpp
new file mode 100644
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+++ b/gtsam/navigation/tests/testScenario.cpp
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+/* ----------------------------------------------------------------------------
+
+ * GTSAM Copyright 2010, Georgia Tech Research Corporation,
+ * Atlanta, Georgia 30332-0415
+ * All Rights Reserved
+ * Authors: Frank Dellaert, et al. (see THANKS for the full author list)
+
+ * See LICENSE for the license information
+
+ * -------------------------------------------------------------------------- */
+
+/**
+ * @file    Scenario.h
+ * @brief   Simple class to test navigation scenarios
+ * @author  Frank Dellaert
+ */
+
+#include <gtsam/geometry/Pose3.h>
+
+namespace gtsam {
+/// Simple class to test navigation scenarios
+class Scenario {
+ public:
+  /// Construct scenario with constant twist [w,v]
+  Scenario(const Vector3& w, const Vector3& v)
+      : twist_((Vector6() << w, v).finished()) {}
+
+  Pose3 poseAtTime(double t) { return Pose3::Expmap(twist_ * t); }
+
+ private:
+  Vector6 twist_;
+};
+
+}  // namespace gtsam
+
+/**
+ * @file    testScenario.cpp
+ * @brief   test ImuFacor with Scenario class
+ * @author  Frank Dellaert
+ */
+
+#include <CppUnitLite/TestHarness.h>
+
+#include <cmath>
+
+using namespace std;
+using namespace gtsam;
+
+static const double degree = M_PI / 180.0;
+
+/* ************************************************************************* */
+TEST(Scenario, Circle) {
+  // Forward velocity 2m/s, angular velocity 6 degree/sec
+  const double v = 2, omega = 6 * degree;
+  Scenario circle(Vector3(0, 0, omega), Vector3(v, 0, 0));
+
+  // R = v/omega, so test if circle is of right size
+  const double R = v / omega;
+  const Pose3 T15 = circle.poseAtTime(15);
+  EXPECT(assert_equal(Vector3(0, 0, 90 * degree), T15.rotation().xyz(), 1e-9));
+  EXPECT(assert_equal(Point3(R, R, 0), T15.translation(), 1e-9));
+}
+
+/* ************************************************************************* */
+int main() {
+  TestResult tr;
+  return TestRegistry::runAllTests(tr);
+}
+/* ************************************************************************* */