[Matlab] Refactor nix.Block.create_data_array error

Author: mpsonntag

+nix/Block.m

@@ -86,7 +86,7 @@
                 shape(2:size(shape, 2));
             end
 
-            err.identifier = 'Block:unsupportedDataType';
+            err.identifier = 'NIXMX:UnsupportedDataType';
             if (~isa(datatype, 'nix.DataType'))
                 err.message = 'Please provide a valid nix.DataType';
                 error(err);
@@ -110,7 +110,7 @@
                 shape = size(data, 2);
             end
 
-            err.identifier = 'Block:unsupportedDataType';
+            err.identifier = 'NIXMX:UnsupportedDataType';
             if (ischar(data))
                 err.message = 'Writing char/string DataArrays is currently not supported.';
                 error(err);

tests/TestBlock.m

@@ -98,13 +98,13 @@
     try
         b.create_data_array('stringDataArray', dtype, nix.DataType.String, [1 5]);
     catch ME
-        assert(strcmp(ME.identifier, 'Block:unsupportedDataType'));
+        assert(strcmp(ME.identifier, 'NIXMX:UnsupportedDataType'));
     end;
 
     try
         b.create_data_array('I will crash and burn', dtype, 'Thou shalt not work!', [1 5]);
     catch ME
-        assert(strcmp(ME.identifier, 'Block:unsupportedDataType'));
+        assert(strcmp(ME.identifier, 'NIXMX:UnsupportedDataType'));
     end;
 
     da = b.create_data_array('floatDataArray', dtype, nix.DataType.Float, [3 3]);
@@ -153,13 +153,13 @@
     try
         b.create_data_array_from_data('stringDataArray', daType, ['a' 'b']);
     catch ME
-        assert(strcmp(ME.identifier, 'Block:unsupportedDataType'));
+        assert(strcmp(ME.identifier, 'NIXMX:UnsupportedDataType'));
     end;
 
     try
         b.create_data_array_from_data('I will crash and burn', daType, {1 2 3});
     catch ME
-        assert(strcmp(ME.identifier, 'Block:unsupportedDataType'));
+        assert(strcmp(ME.identifier, 'NIXMX:UnsupportedDataType'));
     end;
 
     assert(~isempty(b.dataArrays));