[c++/m] Add Property delete values function

Adds both delete values functions to the Property
entity on both c++ and matlab side and introduces
a corresponding test.

Author: mpsonntag

+nix/Property.m

@@ -61,6 +61,10 @@
         function c = value_count(obj)
             c = nix_mx('Property::valueCount', obj.nix_handle);
         end
+
+        function [] = values_delete(obj)
+            nix_mx('Property::deleteValues', obj.nix_handle);
+        end
     end
 
 end

nix_mx.cc

@@ -362,9 +362,11 @@ void mexFunction(int            nlhs,
             .reg("setNoneUnit", SETTER(const boost::none_t, nix::Property, unit))
             .reg("setMapping", SETTER(const std::string&, nix::Property, mapping))
             .reg("setNoneMapping", SETTER(const boost::none_t, nix::Property, mapping))
-            .reg("valueCount", GETTER(nix::ndsize_t, nix::Property, valueCount));
+            .reg("valueCount", GETTER(nix::ndsize_t, nix::Property, valueCount))
+            .reg("setNoneValue", SETTER(const boost::none_t, nix::Property, values));
         methods->add("Property::values", nixproperty::values);
         methods->add("Property::updateValues", nixproperty::updateValues);
+        methods->add("Property::deleteValues", nixproperty::deleteValues);
 
         classdef<nix::SetDimension>("SetDimension", methods)
             .desc(&nixdimensions::describe)

src/nixproperty.cc

@@ -64,4 +64,9 @@ namespace nixproperty {
         prop.values(getVals);
     }
 
+    void deleteValues(const extractor &input, infusor &output) {
+        nix::Property prop = input.entity<nix::Property>(1);
+        prop.deleteValues();
+    }
+
 } // namespace nixproperty

src/nixproperty.h

@@ -19,6 +19,8 @@ namespace nixproperty {
 
     void updateValues(const extractor &input, infusor &output);
 
+    void deleteValues(const extractor &input, infusor &output);
+
 } // namespace nixproperty
 
 #endif

tests/TestProperty.m

@@ -15,6 +15,7 @@
     funcs{end+1} = @test_update_values;
     funcs{end+1} = @test_values;
     funcs{end+1} = @test_value_count;
+    funcs{end+1} = @test_values_delete;
 end
 
 %% Test: Access Attributes
@@ -128,3 +129,19 @@
     pid = f.sections{1}.allProperties{1}.id;
     assert(f.sections{1}.open_property(pid).value_count() == 1);
 end
+
+%% Test: Delete values
+function [] = test_values_delete( varargin )
+    testFile = fullfile(pwd,'tests','testRW.h5');
+    f = nix.File(testFile, nix.FileMode.Overwrite);
+    s = f.create_section('testSection', 'nixSection');
+
+    p = s.create_property_with_value('property1', {true, false, true});
+    assert(~isempty(p.values));
+    p.values_delete();
+    assert(isempty(p.values));
+
+    clear p s f;
+    f = nix.File(testFile, nix.FileMode.ReadOnly);
+    assert(isempty(f.sections{1}.allProperties{1}.values));
+end