Charts I: components 101-120

scatter_chart_test.go

@@ -0,0 +1,82 @@
+package mujica
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/egoist/mygo/ui"
+)
+
+var scatterGroups = []ScatterGroup{
+	{Name: "Monks", Points: []ScatterPoint{{1, 2, 4}, {3, 5, 9}, {6, 4, 1}}},
+	{Name: "Nuns", Points: []ScatterPoint{{2, 7, 16}, {8, 9, 2}}},
+}
+
+func TestScatterChartKeyboardSelect(t *testing.T) {
+	var sel []ScatterKey
+	values := 0
+	h := &chartHarness{build: func(c *ui.Context) ChartResult {
+		r := ScatterChart(c, &sel, scatterGroups, ScatterChartOptions{Frame: ChartFrame{Label: "Choir"}, Bubbles: true})
+		if r.ValueChanged() {
+			values++
+		}
+		return r
+	}}
+	tt := ui.NewTester(h.view, 520, 420)
+	tabTo(t, tt, "Choir")
+	tt.Key(0, ui.KeyRight)
+	tt.Key(0, ui.KeyRight)
+	tt.Key(0, ui.KeySpace)
+	if fmt.Sprint(sel) != "[{0 1}]" || values != 1 {
+		t.Fatalf("Space selected %v (%d events)", sel, values)
+	}
+	if got := chartReadout(tt); got != "Monks · x 3 · y 5 · size 9 · selected" {
+		t.Fatalf("readout %q", got)
+	}
+	tt.Key(0, ui.KeyEnter)
+	if len(sel) != 0 {
+		t.Fatalf("Enter did not unselect: %v", sel)
+	}
+}
+
+func TestScatterChartBoxSelect(t *testing.T) {
+	var sel []ScatterKey
+	h := &chartHarness{build: func(c *ui.Context) ChartResult {
+		return ScatterChart(c, &sel, scatterGroups, ScatterChartOptions{Frame: ChartFrame{Label: "Choir"}})
+	}}
+	tt := ui.NewTester(h.view, 520, 420)
+	b := h.res.Element.Bounds()
+	top := b.Y + 38
+	// Nice domains: x 0..10 over 52..W-12; y 0..10 over top+8..top+214.
+	x := func(v float32) float32 { return b.X + 52 + (b.W-64)*v/10 }
+	y := func(v float32) float32 { return top + 8 + 206*(1-v/10) }
+	tt.Press(x(0.5), y(6))
+	tt.Move(x(4), y(4))
+	tt.Move(x(6.5), y(1.5))
+	tt.Release(x(6.5), y(1.5))
+	if fmt.Sprint(sel) != "[{0 0} {0 1} {0 2}]" {
+		t.Fatalf("box chose %v", sel)
+	}
+}
+
+func TestScatterChartBad(t *testing.T) {
+	defer func() {
+		if recover() == nil {
+			t.Fatal("no panic for negative size")
+		}
+	}()
+	var sel []ScatterKey
+	ui.NewTester(func(c *ui.Context) {
+		Use(c, Settings{})
+		ScatterChart(c, &sel, []ScatterGroup{{Name: "a", Points: []ScatterPoint{{1, 1, -1}}}}, ScatterChartOptions{Frame: ChartFrame{Label: "x"}})
+	}, 300, 300)
+}
+
+func TestScatterChartSnapshot(t *testing.T) {
+	snapshot(t, "scatter_chart", 520, 340, func(c *ui.Context) {
+		sel := []ScatterKey{{1, 0}}
+		ui.Column(c).Padding(16).Children(func() {
+			ScatterChart(c, &sel, scatterGroups, ScatterChartOptions{Frame: ChartFrame{Label: "Choir"}, Bubbles: true})
+		})
+	})
+}