@Test
public void loadDataMatrixFromMap() {

    Path mapPath = Paths.get("src/test/resources/prioritisers/test_ppi_matrix.mv");
    DataMatrix dataMatrix = DataMatrixIO.loadOffHeapDataMatrix(mapPath);
    assertThat(dataMatrix.numRows(), equalTo(10));
    assertThat(dataMatrix.numColumns(), equalTo(10));
}