refs #9009. For starters - need a test suite.

No test coverage for existing functionality. This is required first.

Code/Mantid/Framework/Algorithms/CMakeLists.txt

@@ -501,6 +501,7 @@ set ( TEST_FILES
 	ConvertSpectrumAxis2Test.h
 	ConvertSpectrumAxisTest.h
 	ConvertTableToMatrixWorkspaceTest.h
+	ConvertMDHistoToMatrixWorkspaceTest.h
 	ConvertToDistributionTest.h
 	ConvertToEventWorkspaceTest.h
 	ConvertToHistogramTest.h

Code/Mantid/Framework/Algorithms/test/ConvertMDHistoToMatrixWorkspaceTest.h

@@ -0,0 +1,68 @@
+/*
+ * ConvertMDHistoToMatrixWorkspaceTest.h
+ *
+ *  Created on: Feb 13, 2014
+ *      Author: spu92482
+ */
+
+#ifndef CONVERTMDHISTOTOMATRIXWORKSPACETEST_H_
+#define CONVERTMDHISTOTOMATRIXWORKSPACETEST_H_
+
+#include <cxxtest/TestSuite.h>
+#include "MantidAlgorithms/ConvertMDHistoToMatrixWorkspace.h"
+#include "MantidMDEvents/MDHistoWorkspace.h"
+#include "MantidTestHelpers/MDEventsTestHelper.h"
+#include "MantidTestHelpers/WorkspaceCreationHelper.h"
+
+using namespace Mantid;
+using namespace Mantid::API;
+using namespace Mantid::Kernel;
+using namespace Mantid::Algorithms;
+using namespace Mantid::MDEvents;
+
+class ConvertMDHistoToMatrixWorkspaceTest : public CxxTest::TestSuite
+{
+public:
+
+  MatrixWorkspace_sptr do_execute(const size_t n_dims, const double signal, const double error_sq, size_t* nbins, coord_t* min, coord_t* max)
+  {
+    IMDHistoWorkspace_sptr inWS = MDEventsTestHelper::makeFakeMDHistoWorkspaceGeneral(n_dims, signal,
+        error_sq, nbins, min, max);
+
+    ConvertMDHistoToMatrixWorkspace alg;
+    alg.setChild(true);
+    alg.setRethrows(true);
+    alg.initialize();
+    alg.setProperty("InputWorkspace", inWS);
+    alg.setPropertyValue("OutputWorkspace", "_");
+
+    alg.execute();
+    MatrixWorkspace_sptr outWS = alg.getProperty("OutputWorkspace");
+    return outWS;
+  }
+
+  void test_input_workspace_must_be_imdhisto()
+  {
+    MatrixWorkspace_sptr ws = WorkspaceCreationHelper::Create1DWorkspaceConstant(1,1,0);
+    ConvertMDHistoToMatrixWorkspace alg;
+    alg.setRethrows(true);
+    alg.initialize();
+    TS_ASSERT_THROWS(alg.setProperty("InputWorkspace", ws), std::invalid_argument&) ;
+  }
+
+  void test_conversion()
+  {
+    const size_t n_dims = 1;
+    const double signal = 1;
+    const double error_sq = 0;
+    size_t nbins[1] = {1};
+    coord_t min[1] = {-1};
+    coord_t max[1] = {1};
+
+    MatrixWorkspace_sptr outWS = do_execute(n_dims, signal, error_sq, nbins, min, max);
+  }
+
+};
+
+
+#endif /* CONVERTMDHISTOTOMATRIXWORKSPACETEST_H_ */