Add and test raw 2d array (aka matrix) in ::equals

src/shogun/base/SGObject.h

@@ -527,6 +527,27 @@ class CSGObject
 			tag, AnyParameter(make_any_ref(value, len), properties));
 	}
 
+	/** Puts a pointer to some 2d parameter array (i.e. a matrix) into the
+	 * parameter map.
+	 *
+	 * @param name name of the parameter array
+	 * @param value pointer to the first element of the parameter array
+	 * @param rows number of rows in the array
+	 * @param cols number of columns in the array
+	 * @param properties properties of the parameter (e.g. if model selection is
+	 * supported)
+	 */
+	template <typename T, typename S>
+	void watch_param(
+		const std::string& name, T** value, S* rows, S* cols,
+		AnyParameterProperties properties =
+		    AnyParameterProperties(MS_NOT_AVAILABLE, GRADIENT_NOT_AVAILABLE))
+	{
+		BaseTag tag(name);
+		create_parameter(
+			tag, AnyParameter(make_any_ref(value, rows, cols), properties));
+	}
+
 public:
 	/** Updates the hash of current parameter combination */
 	virtual void update_parameter_hash();

tests/unit/base/MockObject.h

@@ -172,6 +172,9 @@ namespace shogun
 			m_raw_matrix_basic = new T[size];
 			for (auto i : range(size))
 				m_raw_matrix_basic[i] = 1;
+			watch_param(
+			    "raw_matrix_basic", &m_raw_matrix_basic,
+			    &m_raw_matrix_basic_rows, &m_raw_matrix_basic_cols);
 		}
 
 		void free_raw_matrix()