Layout: components 001-010

stack_test.go

@@ -0,0 +1,114 @@
+package mujica
+
+import (
+	"testing"
+
+	"github.com/egoist/mygo/ui"
+)
+
+func TestStackVerticalGap(t *testing.T) {
+	var a, b ui.Rect
+	ui.NewTester(func(c *ui.Context) {
+		Use(c, Settings{})
+		Stack(c, StackOptions{}, func() {
+			a = ui.Box(c).Height(20).Bounds()
+			b = ui.Box(c).Height(20).Bounds()
+		})
+	}, 300, 300).Frame()
+	if b.Y-(a.Y+a.H) != 8 {
+		t.Fatalf("gap %v, want 8", b.Y-(a.Y+a.H))
+	}
+	if a.W != 300 {
+		t.Fatalf("vertical stack did not stretch: width %v", a.W)
+	}
+}
+
+func TestStackHiddenItemTakesNoGap(t *testing.T) {
+	for _, hide := range []bool{false, true} {
+		var a, last ui.Rect
+		ui.NewTester(func(c *ui.Context) {
+			Use(c, Settings{})
+			Stack(c, StackOptions{Horizontal: true, Gap: SpaceL}, func() {
+				a = ui.Box(c).Size(30, 10).Bounds()
+				StackItem(hide, func() { ui.Box(c).Size(30, 10) })
+				last = ui.Box(c).Size(30, 10).Bounds()
+			})
+		}, 300, 300).Frame()
+		want := a.X + 30 + 16
+		if !hide {
+			want += 30 + 16
+		}
+		if last.X != want {
+			t.Errorf("hidden=%v: last at %v, want %v", hide, last.X, want)
+		}
+	}
+}
+
+func TestStackAlignEnd(t *testing.T) {
+	var r ui.Rect
+	ui.NewTester(func(c *ui.Context) {
+		Use(c, Settings{})
+		ui.Column(c).Width(200).Children(func() {
+			Stack(c, StackOptions{Align: StackAlignEnd}, func() {
+				r = ui.Box(c).Size(50, 10).Bounds()
+			})
+		})
+	}, 300, 300).Frame()
+	if r.X != 150 {
+		t.Fatalf("end-aligned child at %v, want 150", r.X)
+	}
+}
+
+func TestStackJustifyAndWrap(t *testing.T) {
+	var first, third ui.Rect
+	ui.NewTester(func(c *ui.Context) {
+		Use(c, Settings{})
+		ui.Column(c).Width(250).Children(func() {
+			Stack(c, StackOptions{Horizontal: true, Wrap: true, Gap: SpaceNone, Justify: ui.End}, func() {
+				first = ui.Box(c).Size(100, 20).Bounds()
+				ui.Box(c).Size(100, 20)
+				third = ui.Box(c).Size(100, 20).Bounds()
+			})
+		})
+	}, 300, 300).Frame()
+	if third.Y != first.Y+20 {
+		t.Fatalf("third at y=%v, want the next line at %v", third.Y, first.Y+20)
+	}
+	if first.X != 50 || third.X != 150 {
+		t.Fatalf("end-justified lines start at %v and %v, want 50 and 150", first.X, third.X)
+	}
+}
+
+func TestStackWrapNeedsHorizontal(t *testing.T) {
+	defer func() {
+		if recover() == nil {
+			t.Fatal("vertical Wrap did not panic")
+		}
+	}()
+	ui.NewTester(func(c *ui.Context) {
+		Use(c, Settings{})
+		Stack(c, StackOptions{Wrap: true}, func() {})
+	}, 100, 100)
+}
+
+func TestStackSnapshot(t *testing.T) {
+	snapshot(t, "stack", 420, 150, func(c *ui.Context) {
+		k := Tokens(c)
+		chip := func(s string) {
+			ui.Box(c).Padding(6, 12).Background(k.Surface).Border(1, k.Border).Radius(2).Children(func() { ui.Text(c, s) })
+		}
+		ui.Column(c).Padding(16).Gap(16).Children(func() {
+			Stack(c, StackOptions{Horizontal: true}, func() {
+				for _, s := range []string{"Overture", "Aria", "Recitative"} {
+					chip(s)
+				}
+			})
+			Stack(c, StackOptions{Horizontal: true, Justify: ui.SpaceBetween}, func() {
+				chip("Start")
+				StackItem(true, func() { chip("Hidden") })
+				chip("Between")
+				chip("End")
+			})
+		})
+	})
+}