Introduce test.NewTempWindow() to avoid memory leak in test windows

container/innerwindow_test.go

@@ -14,7 +14,7 @@ import (
 func TestInnerWindow_Close(t *testing.T) {
 	w := NewInnerWindow("Thing", widget.NewLabel("Content"))
 
-	outer := test.NewWindow(w)
+	outer := test.NewTempWindow(t, w)
 	outer.SetPadded(false)
 	outer.Resize(w.MinSize())
 	assert.True(t, w.Visible())

container/tabs_test.go

@@ -32,7 +32,7 @@ func TestTab_ThemeChange(t *testing.T) {
 	tabs := NewAppTabs(
 		NewTabItem("a", widget.NewLabel("a")),
 		NewTabItem("b", widget.NewLabel("b")))
-	w := test.NewWindow(tabs)
+	w := test.NewTempWindow(t, tabs)
 	w.Resize(fyne.NewSize(180, 120))
 
 	initial := w.Canvas().Capture()

dialog/color_button_test.go

@@ -32,12 +32,10 @@ func Test_colorButton_Layout(t *testing.T) {
 				color.MouseIn(nil)
 			}
 
-			window := test.NewWindow(container.NewCenter(color))
+			window := test.NewTempWindow(t, container.NewCenter(color))
 			window.Resize(color.MinSize().Max(fyne.NewSize(50, 50)))
 
 			test.AssertRendersToImage(t, "color/button_layout_"+name+".png", window.Canvas())
-
-			window.Close()
 		})
 	}
 }

dialog/color_channel_test.go

@@ -35,11 +35,9 @@ func Test_colorChannel_Layout(t *testing.T) {
 			color := newColorChannel(tt.name, min, max, tt.value, nil)
 			color.Resize(size)
 
-			window := test.NewWindow(color)
+			window := test.NewTempWindow(t, color)
 
 			test.AssertRendersToImage(t, "color/channel_layout_"+name+".png", window.Canvas())
-
-			window.Close()
 		})
 	}
 }

dialog/color_picker_test.go

@@ -14,25 +14,21 @@ func Test_colorGreyscalePicker_Layout(t *testing.T) {
 
 	color := newColorGreyscalePicker(nil)
 
-	window := test.NewWindow(container.NewCenter(color))
+	window := test.NewTempWindow(t, container.NewCenter(color))
 	window.Resize(color.MinSize().Max(fyne.NewSize(360, 60)))
 
 	test.AssertRendersToImage(t, "color/picker_layout_greyscale.png", window.Canvas())
-
-	window.Close()
 }
 
 func Test_colorBasicPicker_Layout(t *testing.T) {
 	test.NewTempApp(t)
 
 	color := newColorBasicPicker(nil)
 
-	window := test.NewWindow(container.NewCenter(color))
+	window := test.NewTempWindow(t, container.NewCenter(color))
 	window.Resize(color.MinSize().Max(fyne.NewSize(360, 60)))
 
 	test.AssertRendersToImage(t, "color/picker_layout_basic.png", window.Canvas())
-
-	window.Close()
 }
 
 func Test_colorRecentPicker_Layout(t *testing.T) {
@@ -43,12 +39,10 @@ func Test_colorRecentPicker_Layout(t *testing.T) {
 
 	color := newColorRecentPicker(nil)
 
-	window := test.NewWindow(container.NewCenter(color))
+	window := test.NewTempWindow(t, container.NewCenter(color))
 	window.Resize(color.MinSize().Max(fyne.NewSize(360, 60)))
 
 	test.AssertRendersToImage(t, "color/picker_layout_recent.png", window.Canvas())
-
-	window.Close()
 }
 
 func Test_colorAdvancedPicker_Layout(t *testing.T) {
@@ -58,10 +52,8 @@ func Test_colorAdvancedPicker_Layout(t *testing.T) {
 
 	color.Refresh()
 
-	window := test.NewWindow(container.NewCenter(color))
+	window := test.NewTempWindow(t, container.NewCenter(color))
 	window.Resize(color.MinSize().Max(fyne.NewSize(200, 200)))
 
 	test.AssertRendersToImage(t, "color/picker_layout_advanced.png", window.Canvas())
-
-	window.Close()
 }

dialog/color_preview_test.go

@@ -14,11 +14,9 @@ func Test_colorPreview_Color(t *testing.T) {
 
 	preview := newColorPreview(color.RGBA{53, 113, 233, 255})
 	preview.SetColor(color.RGBA{90, 206, 80, 180})
-	window := test.NewWindow(preview)
+	window := test.NewTempWindow(t, preview)
 	padding := theme.Padding() * 2
 	window.Resize(fyne.NewSize(128+padding, 64+padding))
 
 	test.AssertRendersToImage(t, "color/preview_color.png", window.Canvas())
-
-	window.Close()
 }

dialog/color_test.go

@@ -15,7 +15,7 @@ import (
 func TestColorDialog_Theme(t *testing.T) {
 	test.NewTempApp(t)
 
-	w := test.NewWindow(canvas.NewRectangle(color.Transparent))
+	w := test.NewTempWindow(t, canvas.NewRectangle(color.Transparent))
 	w.Resize(fyne.NewSize(1000, 800))
 
 	d := NewColorPicker("Color Picker", "Pick a Color", nil, w)
@@ -35,16 +35,14 @@ func TestColorDialog_Theme(t *testing.T) {
 
 	test.ApplyTheme(t, test.NewTheme())
 	test.AssertRendersToImage(t, "color/dialog_expanded_theme_ugly.png", w.Canvas())
-
-	w.Close()
 }
 
 func TestColorDialog_Recents(t *testing.T) {
 	a := test.NewTempApp(t)
 	// Inject recent preferences
 	a.Preferences().SetString("color_recents", "#2196f3,#4caf50,#f44336")
 
-	w := test.NewWindow(canvas.NewRectangle(color.Transparent))
+	w := test.NewTempWindow(t, canvas.NewRectangle(color.Transparent))
 	w.Resize(fyne.NewSize(800, 600))
 
 	d := NewColorPicker("Color Picker", "Pick a Color", nil, w)
@@ -56,13 +54,11 @@ func TestColorDialog_Recents(t *testing.T) {
 
 	test.ApplyTheme(t, test.NewTheme())
 	test.AssertRendersToImage(t, "color/dialog_recents_theme_ugly.png", w.Canvas())
-
-	w.Close()
 }
 
 func TestColorDialog_SetColor(t *testing.T) {
 
-	w := test.NewWindow(canvas.NewRectangle(color.Transparent))
+	w := test.NewTempWindow(t, canvas.NewRectangle(color.Transparent))
 	w.Resize(fyne.NewSize(800, 600))
 
 	col := color.RGBA{70, 210, 200, 255}
@@ -95,13 +91,12 @@ func TestColorDialog_SetColor(t *testing.T) {
 	assert.Equal(t, 244, d.picker.Alpha)
 
 	d.Show()
-	w.Close()
 }
 
 func TestColorDialogSimple_Theme(t *testing.T) {
 	test.NewTempApp(t)
 
-	w := test.NewWindow(canvas.NewRectangle(color.Transparent))
+	w := test.NewTempWindow(t, canvas.NewRectangle(color.Transparent))
 	w.Resize(fyne.NewSize(600, 400))
 
 	d := NewColorPicker("Color Picker", "Pick a Color", nil, w)
@@ -111,8 +106,6 @@ func TestColorDialogSimple_Theme(t *testing.T) {
 
 	test.ApplyTheme(t, test.NewTheme())
 	test.AssertRendersToImage(t, "color/dialog_simple_theme_ugly.png", w.Canvas())
-
-	w.Close()
 }
 
 func TestColorDialogSimple_Recents(t *testing.T) {
@@ -121,7 +114,7 @@ func TestColorDialogSimple_Recents(t *testing.T) {
 	// Inject recent preferences
 	a.Preferences().SetString("color_recents", "#2196f3,#4caf50,#f44336")
 
-	w := test.NewWindow(canvas.NewRectangle(color.Transparent))
+	w := test.NewTempWindow(t, canvas.NewRectangle(color.Transparent))
 	w.Resize(fyne.NewSize(600, 400))
 
 	d := NewColorPicker("Color Picker", "Pick a Color", nil, w)
@@ -131,8 +124,6 @@ func TestColorDialogSimple_Recents(t *testing.T) {
 
 	test.ApplyTheme(t, test.NewTheme())
 	test.AssertRendersToImage(t, "color/dialog_simple_recents_theme_ugly.png", w.Canvas())
-
-	w.Close()
 }
 
 func Test_recent_color(t *testing.T) {

dialog/color_wheel_test.go

@@ -12,11 +12,9 @@ func Test_colorWheel_Layout(t *testing.T) {
 
 	wheel := newColorWheel(nil)
 	wheel.SetHSLA(180, 100, 50, 255)
-	window := test.NewWindow(wheel)
+	window := test.NewTempWindow(t, wheel)
 	window.Resize(wheel.MinSize().Max(fyne.NewSize(100, 100)))
 
 	test.AssertRendersToImage(t, "color/wheel_layout.png", window.Canvas())
 	test.AssertRendersToMarkup(t, "color/wheel_layout.xml", window.Canvas())
-
-	window.Close()
 }

dialog/confirm_test.go

@@ -17,7 +17,7 @@ func TestDialog_ConfirmDoubleCallback(t *testing.T) {
 	ch := make(chan int)
 	cnf := NewConfirm("Test", "Test", func(_ bool) {
 		ch <- 42
-	}, test.NewWindow(nil))
+	}, test.NewTempWindow(t, nil))
 	cnf.SetDismissText("No")
 	cnf.SetConfirmText("Yes")
 	cnf.SetOnClosed(func() {
@@ -34,7 +34,7 @@ func TestDialog_ConfirmDoubleCallback(t *testing.T) {
 
 func TestDialog_ConfirmCallbackOnlyOnClosed(t *testing.T) {
 	ch := make(chan int)
-	cnf := NewConfirm("Test", "Test", nil, test.NewWindow(nil))
+	cnf := NewConfirm("Test", "Test", nil, test.NewTempWindow(t, nil))
 	cnf.SetDismissText("No")
 	cnf.SetConfirmText("Yes")
 	cnf.SetOnClosed(func() {
@@ -52,7 +52,7 @@ func TestDialog_ConfirmCallbackOnlyOnConfirm(t *testing.T) {
 	ch := make(chan int)
 	cnf := NewConfirm("Test", "Test", func(_ bool) {
 		ch <- 42
-	}, test.NewWindow(nil))
+	}, test.NewTempWindow(t, nil))
 	cnf.SetDismissText("No")
 	cnf.SetConfirmText("Yes")
 	cnf.Show()
@@ -65,8 +65,8 @@ func TestDialog_ConfirmCallbackOnlyOnConfirm(t *testing.T) {
 
 func TestConfirmDialog_Resize(t *testing.T) {
 	window := test.NewWindow(nil)
-	window.Resize(fyne.NewSize(600, 400))
 	defer window.Close()
+	window.Resize(fyne.NewSize(600, 400))
 	d := NewConfirm("Test", "Test", nil, window)
 
 	theDialog := d.dialog
@@ -108,7 +108,7 @@ func TestConfirmDialog_Resize(t *testing.T) {
 
 func TestConfirm_Importance(t *testing.T) {
 	test.NewTempApp(t)
-	w := test.NewWindow(canvas.NewRectangle(color.Transparent))
+	w := test.NewTempWindow(t, canvas.NewRectangle(color.Transparent))
 	size := fyne.NewSize(200, 300)
 	w.Resize(size)
 

dialog/custom_test.go

@@ -16,7 +16,7 @@ import (
 func TestShowCustom_ApplyTheme(t *testing.T) {
 	test.NewTempApp(t)
 
-	w := test.NewWindow(canvas.NewRectangle(color.Transparent))
+	w := test.NewTempWindow(t, canvas.NewRectangle(color.Transparent))
 
 	label := widget.NewLabel("Content")
 	label.Alignment = fyne.TextAlignCenter
@@ -35,7 +35,7 @@ func TestShowCustom_ApplyTheme(t *testing.T) {
 }
 
 func TestShowCustom_Resize(t *testing.T) {
-	w := test.NewWindow(canvas.NewRectangle(color.Transparent))
+	w := test.NewTempWindow(t, canvas.NewRectangle(color.Transparent))
 	w.Resize(fyne.NewSize(300, 300))
 
 	label := widget.NewLabel("Content")
@@ -50,7 +50,7 @@ func TestShowCustom_Resize(t *testing.T) {
 
 func TestCustom_ApplyThemeOnShow(t *testing.T) {
 	test.NewTempApp(t)
-	w := test.NewWindow(canvas.NewRectangle(color.Transparent))
+	w := test.NewTempWindow(t, canvas.NewRectangle(color.Transparent))
 	w.Resize(fyne.NewSize(200, 300))
 
 	label := widget.NewLabel("Content")
@@ -75,7 +75,7 @@ func TestCustom_ApplyThemeOnShow(t *testing.T) {
 
 func TestCustom_ResizeOnShow(t *testing.T) {
 	test.NewTempApp(t)
-	w := test.NewWindow(canvas.NewRectangle(color.Transparent))
+	w := test.NewTempWindow(t, canvas.NewRectangle(color.Transparent))
 	size := fyne.NewSize(200, 300)
 	w.Resize(size)
 
@@ -96,7 +96,7 @@ func TestCustom_ResizeOnShow(t *testing.T) {
 
 func TestConfirm_SetButtons(t *testing.T) {
 	test.NewTempApp(t)
-	w := test.NewWindow(canvas.NewRectangle(color.Transparent))
+	w := test.NewTempWindow(t, canvas.NewRectangle(color.Transparent))
 	size := fyne.NewSize(200, 300)
 	w.Resize(size)
 
@@ -118,7 +118,7 @@ func TestConfirm_SetButtons(t *testing.T) {
 
 func TestConfirmWithoutButtons(t *testing.T) {
 	test.NewTempApp(t)
-	w := test.NewWindow(canvas.NewRectangle(color.Transparent))
+	w := test.NewTempWindow(t, canvas.NewRectangle(color.Transparent))
 	size := fyne.NewSize(200, 300)
 	w.Resize(size)
 
@@ -130,7 +130,7 @@ func TestConfirmWithoutButtons(t *testing.T) {
 
 func TestCustomConfirm_Importance(t *testing.T) {
 	test.NewTempApp(t)
-	w := test.NewWindow(canvas.NewRectangle(color.Transparent))
+	w := test.NewTempWindow(t, canvas.NewRectangle(color.Transparent))
 	size := fyne.NewSize(200, 300)
 	w.Resize(size)
 

dialog/entry_test.go

@@ -11,7 +11,7 @@ func TestEntryDialog_Confirm(t *testing.T) {
 	value := ""
 	ed := NewEntryDialog("Test", "message", func(v string) {
 		value = v
-	}, test.NewWindow(nil))
+	}, test.NewTempWindow(t, nil))
 	ed.Show()
 	test.Type(ed.entry, "123")
 	test.Tap(ed.confirm)
@@ -23,7 +23,7 @@ func TestEntryDialog_Dismiss(t *testing.T) {
 	value := "123"
 	ed := NewEntryDialog("Test", "message", func(v string) {
 		value = v
-	}, test.NewWindow(nil))
+	}, test.NewTempWindow(t, nil))
 	ed.Show()
 	test.Type(ed.entry, "XYZ")
 	test.Tap(ed.cancel)