Function TestCanvas

private/canvas/canvas_test.go:104–541

(t *testing.T)

}

func TestCanvas(t *testing.T) {
	tests := []struct {
		desc    string
		canvas  image.Rectangle
		ops     func(*Canvas) error
		want    func(size image.Point) (*faketerm.Terminal, error)
		wantErr bool
	}{
		{
			desc:   "SetCellOpts fails on a point outside of the canvas",
			canvas: image.Rect(0, 0, 1, 1),
			ops: func(cvs *Canvas) error {
				return cvs.SetCellOpts(image.Point{1, 1})
			},
			wantErr: true,
		},
		{
			desc:   "SetCellOpts sets options on a cell with no options",
			canvas: image.Rect(0, 0, 2, 2),
			ops: func(cvs *Canvas) error {
				return cvs.SetCellOpts(image.Point{0, 1}, cell.FgColor(cell.ColorRed), cell.BgColor(cell.ColorBlue))
			},
			want: func(size image.Point) (*faketerm.Terminal, error) {
				ft := faketerm.MustNew(size)
				cvs, err := New(ft.Area())
				if err != nil {
					return nil, err
				}

				c, err := cvs.Cell(image.Point{0, 1})
				if err != nil {
					return nil, err
				}
				if _, err := cvs.SetCell(image.Point{0, 1}, c.Rune, cell.FgColor(cell.ColorRed), cell.BgColor(cell.ColorBlue)); err != nil {
					return nil, err
				}

				if err := cvs.Apply(ft); err != nil {
					return nil, err
				}
				return ft, nil
			},
		},
		{
			desc:   "SetCellOpts preserves cell rune",
			canvas: image.Rect(0, 0, 2, 2),
			ops: func(cvs *Canvas) error {
				if _, err := cvs.SetCell(image.Point{0, 1}, 'X'); err != nil {
					return err
				}
				return cvs.SetCellOpts(image.Point{0, 1}, cell.FgColor(cell.ColorRed), cell.BgColor(cell.ColorBlue))
			},
			want: func(size image.Point) (*faketerm.Terminal, error) {
				ft := faketerm.MustNew(size)
				cvs, err := New(ft.Area())
				if err != nil {
					return nil, err
				}