public void Column() { ColumnBuilder configBuilder = new ColumnBuilder(null, null); ColumnConfig config = null; _builderFactory.ColumnBuilder(Arg.Do <ColumnConfig>(c => config = c)).Returns(configBuilder); ColumnBuilder builder = _builder.Column(entity => entity.Property); _builderFactory.Received(1).ColumnBuilder(Arg.Any <ColumnConfig>()); _columnConfigs.Should().HaveCount(1); _columnConfigs.Should().ContainKey("Property"); ColumnConfig columnConfig = _columnConfigs["Property"]; columnConfig.Should().BeSameAs(config); columnConfig.Visible.Should().BeTrue(); columnConfig.SortState.Should().BeNull(); columnConfig.CssClasses.Should().BeEmpty(); columnConfig.Header.Should().BeNull(); columnConfig.Filtering.Should().NotBeNull(); columnConfig.Filtering.Threshold.Should().Be(0); columnConfig.Filtering.CssClasses.Should().BeEmpty(); builder.Should().BeSameAs(configBuilder); }