decouple charts from wiki representation

lib/biz/spreadsheet/charts_test.v

@@ -0,0 +1,77 @@
+module spreadsheet
+
+import freeflowuniverse.herolib.data.markdownparser.elements
+import freeflowuniverse.herolib.ui.console
+import freeflowuniverse.herolib.web.echarts
+
+fn test_title_chart() {
+	mut s := sheet_new() or { panic(err) }
+	mut nrnodes := s.row_new(
+		name:   'nrnodes'
+		growth: '5:100,55:1000'
+		tags:   'cat:nodes color:yellow urgent'
+	)!
+	args := RowGetArgs{
+		rowname:   'nrnodes'
+		title:     'Main Title'
+		title_sub: 'Subtitle'
+	}
+	title := s.title_chart(args).title
+	assert title.text == 'Main Title'
+	assert title.subtext == 'Subtitle'
+	assert title.left == 'center'
+}
+
+fn test_line_chart() {
+	mut s := sheet_new() or { panic(err) }
+	mut nrnodes := s.row_new(
+		name:   'nrnodes'
+		growth: '5:100,55:1000'
+		tags:   'cat:nodes color:yellow urgent'
+	)!
+	args := RowGetArgs{
+		rowname:     'nrnodes'
+		title:       'Line Chart'
+		period_type: .month
+	}
+	option := s.line_chart(args) or { panic(err) }
+	assert option.title.text == 'Line Chart'
+	assert option.tooltip.trigger == 'axis'
+	assert option.grid.contain_label == true
+}
+
+fn test_bar_chart() {
+	mut s := sheet_new() or { panic(err) }
+	mut nrnodes := s.row_new(
+		name:   'nrnodes'
+		growth: '5:100,55:1000'
+		tags:   'cat:nodes color:yellow urgent'
+	)!
+	args := RowGetArgs{
+		rowname:     'nrnodes'
+		title:       'Bar Chart'
+		period_type: .year
+	}
+	option := s.bar_chart(args) or { panic(err) }
+	assert option.title.text == 'Bar Chart'
+	assert option.x_axis.type_ == 'category'
+	assert option.y_axis.type_ == 'value'
+}
+
+fn test_pie_chart() {
+	mut s := sheet_new() or { panic(err) }
+	mut nrnodes := s.row_new(
+		name:   'nrnodes'
+		growth: '5:100,55:1000'
+		tags:   'cat:nodes color:yellow urgent'
+	)!
+	args := RowGetArgs{
+		rowname:     'nrnodes'
+		title:       'Pie Chart'
+		period_type: .quarter
+	}
+	option := s.pie_chart(args) or { panic(err) }
+	assert option.title.text == 'Pie Chart'
+	assert option.tooltip.trigger == 'item'
+	assert option.legend.data.len > 0
+}