Charts I: components 101-120

waterfall_chart_test.go

@@ -0,0 +1,54 @@
+package mujica
+
+import (
+	"testing"
+
+	"github.com/egoist/mygo/ui"
+)
+
+var waterfallSteps = []WaterfallStep{
+	{Label: "Tithes", Value: 12},
+	{Label: "Repairs", Value: -5},
+	{Label: "Q1", Kind: WaterfallSubtotal},
+	{Label: "Alms", Value: 4},
+	{Label: "Year", Kind: WaterfallTotal},
+}
+
+func TestWaterfallChartReadout(t *testing.T) {
+	h := &chartHarness{build: func(c *ui.Context) ChartResult {
+		return WaterfallChart(c, waterfallSteps, WaterfallChartOptions{Frame: ChartFrame{Label: "Ledger"}})
+	}}
+	tt := ui.NewTester(h.view, 520, 420)
+	tabTo(t, tt, "Ledger")
+	want := []string{"Tithes · +12 · running total 12", "Repairs · −5 · running total 7", "Q1 · 7", "Alms · +4 · running total 11", "Year · 11"}
+	for i, w := range want {
+		tt.Key(0, ui.KeyRight)
+		if got := chartReadout(tt); got != w {
+			t.Fatalf("step %d: %q, want %q", i, got, w)
+		}
+	}
+}
+
+func TestWaterfallChartBad(t *testing.T) {
+	for _, s := range []WaterfallStep{{Label: "x", Value: 3, Kind: WaterfallTotal}, {Value: 1}, {Label: "x", Kind: 9}} {
+		func() {
+			defer func() {
+				if recover() == nil {
+					t.Errorf("%+v: no panic", s)
+				}
+			}()
+			ui.NewTester(func(c *ui.Context) {
+				Use(c, Settings{})
+				WaterfallChart(c, []WaterfallStep{s}, WaterfallChartOptions{Frame: ChartFrame{Label: "x"}})
+			}, 300, 300)
+		}()
+	}
+}
+
+func TestWaterfallChartSnapshot(t *testing.T) {
+	snapshot(t, "waterfall_chart", 520, 320, func(c *ui.Context) {
+		ui.Column(c).Padding(16).Children(func() {
+			WaterfallChart(c, waterfallSteps, WaterfallChartOptions{Frame: ChartFrame{Label: "Ledger"}})
+		})
+	})
+}