Add python exports for new validator

Framework/PythonInterface/mantid/api/src/Exports/WorkspaceValidators.cpp

 #include "MantidAPI/CommonBinsValidator.h"
 #include "MantidAPI/HistogramValidator.h"
+#include "MantidAPI/IMDWorkspace.h"
+#include "MantidAPI/MDFrameValidator.h"
 #include "MantidAPI/NumericAxisValidator.h"
 #include "MantidAPI/RawCountValidator.h"
 #include "MantidAPI/SpectraAxisValidator.h"
@@ -7,6 +9,7 @@
 #include "MantidPythonInterface/kernel/TypedValidatorExporter.h"
 #include <boost/python/class.hpp>
 
+using Mantid::API::IMDWorkspace_sptr;
 using Mantid::Kernel::TypedValidator;
 using Mantid::PythonInterface::TypedValidatorExporter;
 using namespace boost::python;
@@ -17,9 +20,15 @@ void export_MatrixWorkspaceValidator() {
   using Mantid::API::MatrixWorkspaceValidator;
   TypedValidatorExporter<MatrixWorkspace_sptr>::define(
       "MatrixWorkspaceValidator");
+  TypedValidatorExporter<IMDWorkspace_sptr>::define(
+            "IMDWorkspaceValidator");
 
   class_<MatrixWorkspaceValidator, bases<TypedValidator<MatrixWorkspace_sptr>>,
          boost::noncopyable>("MatrixWorkspaceValidator", no_init);
+
+    class_<TypedValidator<IMDWorkspace_sptr >,
+            boost::noncopyable>("IMDWorkspaceValidator", no_init);
+
 }
 /// Export a validator derived from a MatrixWorkspaceValidator that has a no-arg
 /// constructor
@@ -46,9 +55,10 @@ void export_WorkspaceValidators() {
       WorkspaceUnitValidator, std::string, "unit",
       "Checks the workspace has the given unit along the X-axis");
   EXPORT_WKSP_VALIDATOR_DEFAULT_ARG(HistogramValidator, bool, "mustBeHistogram",
-                                    true, "If mustBeHistogram=True then the "
-                                          "workspace must be a histogram "
-                                          "otherwise it must be point data.");
+                                    true,
+                                    "If mustBeHistogram=True then the "
+                                    "workspace must be a histogram "
+                                    "otherwise it must be point data.");
   EXPORT_WKSP_VALIDATOR_DEFAULT_ARG(
       RawCountValidator, bool, "mustNotBeDistribution", true,
       "If mustNotBeDistribution=True then the workspace must not have been "
@@ -62,4 +72,8 @@ void export_WorkspaceValidators() {
   EXPORT_WKSP_VALIDATOR_DEFAULT_ARG(
       NumericAxisValidator, int, "axisNumber", 1,
       "Checks whether the axis specified by axisNumber is a NumericAxis");
+
+  class_<MDFrameValidator, bases<TypedValidator<IMDWorkspace_sptr>>,
+         boost::noncopyable>("MDFrameValidator", init<std::string>(arg("frameName"),
+          "Checks the MD workspace has th given frame along all dimensions"));
 }

Framework/PythonInterface/test/python/mantid/api/WorkspaceValidatorsTest.py

@@ -9,7 +9,7 @@ from mantid.kernel import IValidator
 from mantid.api import (WorkspaceUnitValidator, HistogramValidator,
                         RawCountValidator, CommonBinsValidator,
                         SpectraAxisValidator, NumericAxisValidator,
-                        InstrumentValidator)
+                        InstrumentValidator, MDFrameValidator)
 
 class WorkspaceValidatorsTest(unittest.TestCase):
 
@@ -67,5 +67,10 @@ class WorkspaceValidatorsTest(unittest.TestCase):
         """
         testhelpers.assertRaisesNothing(self, InstrumentValidator)
 
+    def test_MDFrameValidator_construction(self):
+        testhelpers.assertRaisesNothing(self, MDFrameValidator, "HKL")
+        self.assertRaises(Exception, MDFrameValidator)
+
+
 if __name__ == '__main__':
     unittest.main()

Framework/TestHelpers/inc/MantidTestHelpers/FakeObjects.h

@@ -710,17 +710,11 @@ public:
     MDHistoWorkspaceTester(MDHistoDimension_sptr dimX,
     MDHistoDimension_sptr dimY,
     MDHistoDimension_sptr dimZ) {
-
-      m_dimensions.push_back(dimX);
-      m_dimensions.push_back(dimY);
-      m_dimensions.push_back(dimZ);
-
-      initGeometry(m_dimensions);
+      std::vector<IMDDimension_sptr> dimensions {dimX, dimY, dimZ};
+      initGeometry(dimensions);
   }
-protected:
 
 private:
-    std::vector<IMDDimension_sptr> m_dimensions;
 
   IMDHistoWorkspace *doClone() const override {
     throw std::runtime_error("Not Implemented");