[mlpack-svn] r15904 - mlpack/trunk/src/mlpack/tests

[fastlab-svn at coffeetalk-1.cc.gatech.edu]

Author: rcurtin
Date: Wed Oct  2 17:50:42 2013
New Revision: 15904

Log:
Add tests for NoConstraint and PositiveDefiniteCovariance.


Modified:
   mlpack/trunk/src/mlpack/tests/gmm_test.cpp

Modified: mlpack/trunk/src/mlpack/tests/gmm_test.cpp
==============================================================================
--- mlpack/trunk/src/mlpack/tests/gmm_test.cpp	(original)
+++ mlpack/trunk/src/mlpack/tests/gmm_test.cpp	Wed Oct  2 17:50:42 2013
@@ -9,6 +9,9 @@
 #include <mlpack/methods/gmm/gmm.hpp>
 #include <mlpack/methods/gmm/phi.hpp>
 
+#include <mlpack/methods/gmm/no_constraint.hpp>
+#include <mlpack/methods/gmm/positive_definite_covariance.hpp>
+
 #include <boost/test/unit_test.hpp>
 #include "old_boost_test_definitions.hpp"
 
@@ -621,4 +624,37 @@
   }
 }
 
+BOOST_AUTO_TEST_CASE(NoConstraintTest)
+{
+  // Generate random matrices and make sure they end up the same.
+  for (size_t i = 0; i < 30; ++i)
+  {
+    const size_t rows = 5 + math::RandInt(100);
+    const size_t cols = 5 + math::RandInt(100);
+    arma::mat cov(rows, cols);
+    cov.randu();
+    arma::mat newcov(cov);
+
+    NoConstraint::ApplyConstraint(newcov);
+
+    for (size_t j = 0; j < cov.n_elem; ++j)
+      BOOST_REQUIRE_CLOSE(newcov(j), cov(j), 1e-20);
+  }
+}
+
+BOOST_AUTO_TEST_CASE(PositiveDefiniteConstraintTest)
+{
+  // Make sure matrices are made to be positive definite.
+  for (size_t i = 0; i < 30; ++i)
+  {
+    const size_t elem = 5 + math::RandInt(50);
+    arma::mat cov(elem, elem);
+    cov.randu();
+
+    PositiveDefiniteCovariance::ApplyConstraint(cov);
+
+    BOOST_REQUIRE_GE((double) det(cov), 1e-50);
+  }
+}
+
 BOOST_AUTO_TEST_SUITE_END();