Charts I: components 101-120

bar_chart_test.go

@@ -0,0 +1,90 @@
+package mujica
+
+import (
+	"math"
+	"testing"
+
+	"github.com/egoist/mygo/ui"
+)
+
+var barCats = []string{"Nave", "Choir", "Crypt"}
+
+func barSeries() []ChartSeries {
+	return []ChartSeries{
+		{Name: "Gold", Values: []float64{4, -2, 3}},
+		{Name: "Silver", Values: []float64{2, 5, math.NaN()}},
+	}
+}
+
+func TestBarChartKeyboardPerBar(t *testing.T) {
+	h := &chartHarness{build: func(c *ui.Context) ChartResult {
+		return BarChart(c, barCats, barSeries(), BarChartOptions{Frame: ChartFrame{Label: "Tithes"}})
+	}}
+	tt := ui.NewTester(h.view, 520, 420)
+	tabTo(t, tt, "Tithes")
+	want := []string{"Nave · Gold 4", "Nave · Silver 2", "Choir · Gold -2", "Choir · Silver 5", "Crypt · Gold 3"}
+	for i, w := range want {
+		tt.Key(0, ui.KeyRight)
+		if got := chartReadout(tt); got != w {
+			t.Fatalf("bar %d readout %q, want %q", i, got, w)
+		}
+	}
+	tt.Key(0, ui.KeyRight)
+	if h.res.Point != 4 {
+		t.Fatalf("stepped past the missing bar: %d", h.res.Point)
+	}
+}
+
+func TestBarChartHoverStackedHorizontal(t *testing.T) {
+	for _, o := range []BarChartOptions{{Stacked: true}, {Horizontal: true, Labels: true}, {Horizontal: true, Stacked: true}} {
+		o.Frame = ChartFrame{Label: "Tithes"}
+		h := &chartHarness{build: func(c *ui.Context) ChartResult { return BarChart(c, barCats, barSeries(), o) }}
+		tt := ui.NewTester(h.view, 520, 420)
+		tabTo(t, tt, "Tithes")
+		found := map[string]bool{}
+		b := h.res.Element.Bounds()
+		for y := b.Y + 30; y < b.Y+b.H-40; y += 4 {
+			for x := b.X + 60; x < b.X+b.W-16; x += 8 {
+				tt.Move(x, y)
+				if h.res.Point >= 0 {
+					found[chartReadout(tt)] = true
+				}
+			}
+		}
+		if len(found) != 5 || !found["Choir · Gold -2"] {
+			t.Fatalf("%+v: hover found %v", o, found)
+		}
+	}
+}
+
+func TestBarChartBadAndEmpty(t *testing.T) {
+	defer func() {
+		if recover() == nil {
+			t.Fatal("no panic for mismatched categories")
+		}
+	}()
+	h := &chartHarness{build: func(c *ui.Context) ChartResult {
+		return BarChart(c, barCats, nil, BarChartOptions{Frame: ChartFrame{Label: "Tithes"}})
+	}}
+	tt := ui.NewTester(h.view, 520, 420)
+	if !tt.HasText("No data") {
+		t.Fatalf("empty: %q", tt.Texts())
+	}
+	ui.NewTester(func(c *ui.Context) {
+		Use(c, Settings{})
+		BarChart(c, barCats[:2], barSeries(), BarChartOptions{Frame: ChartFrame{Label: "x"}})
+	}, 300, 300)
+}
+
+func TestBarChartSnapshot(t *testing.T) {
+	snapshot(t, "bar_chart", 640, 320, func(c *ui.Context) {
+		ui.Row(c).Padding(16).Gap(16).Children(func() {
+			ui.Column(c).Width(296).Children(func() {
+				BarChart(c, barCats, barSeries(), BarChartOptions{Frame: ChartFrame{Label: "Grouped", Height: 220}, Labels: true})
+			})
+			ui.Column(c).Width(296).Children(func() {
+				BarChart(c, barCats, barSeries(), BarChartOptions{Frame: ChartFrame{Label: "Stacked", Height: 220}, Horizontal: true, Stacked: true})
+			})
+		})
+	})
+}