Split into category packages; module github.com/ZacharyZhang-NY/MujicaUI

chat/scroll_to_bottom_button_test.go

@@ -0,0 +1,53 @@
+package chat
+
+import (
+	"testing"
+
+	"github.com/egoist/mygo/ui"
+
+	"github.com/ZacharyZhang-NY/MujicaUI/core"
+)
+
+func TestScrollToBottomButtonShowsWhenAway(t *testing.T) {
+	away, unread, clicks := false, 0, 0
+	tt := ui.NewTester(func(c *ui.Context) {
+		core.Use(c, core.Settings{})
+		ui.Box(c).Fill().Children(func() {
+			if ScrollToBottomButton(c, away, unread).Clicked() {
+				clicks++
+			}
+		})
+	}, 300, 200)
+	if _, ok := tt.Find("Scroll to latest"); ok {
+		t.Fatal("shown while at the bottom")
+	}
+	away, unread = true, 4
+	tt.Frame()
+	if !tt.HasText("4") {
+		t.Fatalf("unread count missing: %q", tt.Texts())
+	}
+	_ = tt.Click("Scroll to latest, 4 new")
+	tt.Key(0, ui.KeyTab)
+	tt.Key(0, ui.KeyEnter)
+	if clicks != 2 {
+		t.Fatalf("clicks %d", clicks)
+	}
+}
+
+func TestScrollToBottomButtonNegativeUnread(t *testing.T) {
+	defer func() {
+		if recover() == nil {
+			t.Fatal("no panic for negative unread")
+		}
+	}()
+	ui.NewTester(func(c *ui.Context) {
+		core.Use(c, core.Settings{})
+		ScrollToBottomButton(c, true, -1)
+	}, 100, 100)
+}
+
+func TestScrollToBottomButtonSnapshot(t *testing.T) {
+	snapshot(t, "scroll_to_bottom_button", 240, 80, func(c *ui.Context) {
+		ui.Box(c).Fill().Children(func() { ScrollToBottomButton(c, true, 12) })
+	})
+}