mirror of https://github.com/mum4k/termdash.git
675 lines
18 KiB
Go
675 lines
18 KiB
Go
// Copyright 2018 Google Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package draw
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import (
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"image"
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"testing"
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"github.com/mum4k/termdash/cell"
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"github.com/mum4k/termdash/linestyle"
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"github.com/mum4k/termdash/private/canvas"
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"github.com/mum4k/termdash/private/canvas/testcanvas"
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"github.com/mum4k/termdash/private/faketerm"
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)
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func TestHVLines(t *testing.T) {
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tests := []struct {
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desc string
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canvas image.Rectangle // Size of the canvas for the test.
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lines []HVLine
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opts []HVLineOption
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want func(size image.Point) *faketerm.Terminal
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wantErr bool
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}{
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{
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desc: "fails when line isn't horizontal or vertical",
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canvas: image.Rect(0, 0, 2, 2),
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lines: []HVLine{
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{
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Start: image.Point{0, 0},
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End: image.Point{1, 1},
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},
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},
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want: func(size image.Point) *faketerm.Terminal {
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return faketerm.MustNew(size)
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},
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wantErr: true,
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},
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{
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desc: "fails when start isn't in the canvas",
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canvas: image.Rect(0, 0, 1, 1),
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lines: []HVLine{
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{
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Start: image.Point{2, 0},
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End: image.Point{0, 0},
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},
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},
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want: func(size image.Point) *faketerm.Terminal {
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return faketerm.MustNew(size)
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},
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wantErr: true,
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},
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{
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desc: "fails when end isn't in the canvas",
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canvas: image.Rect(0, 0, 1, 1),
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lines: []HVLine{
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{
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Start: image.Point{0, 0},
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End: image.Point{0, 2},
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},
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},
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want: func(size image.Point) *faketerm.Terminal {
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return faketerm.MustNew(size)
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},
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wantErr: true,
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},
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{
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desc: "fails when the line has zero length",
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canvas: image.Rect(0, 0, 1, 1),
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lines: []HVLine{
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{
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Start: image.Point{0, 0},
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End: image.Point{0, 0},
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},
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},
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want: func(size image.Point) *faketerm.Terminal {
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return faketerm.MustNew(size)
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},
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wantErr: true,
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},
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{
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desc: "draws single horizontal line",
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canvas: image.Rect(0, 0, 3, 1),
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lines: []HVLine{
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{
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Start: image.Point{0, 0},
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End: image.Point{2, 0},
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},
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},
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want: func(size image.Point) *faketerm.Terminal {
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ft := faketerm.MustNew(size)
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c := testcanvas.MustNew(ft.Area())
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parts := lineStyleChars[linestyle.Light]
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testcanvas.MustSetCell(c, image.Point{0, 0}, parts[hLine])
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testcanvas.MustSetCell(c, image.Point{1, 0}, parts[hLine])
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testcanvas.MustSetCell(c, image.Point{2, 0}, parts[hLine])
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testcanvas.MustApply(c, ft)
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return ft
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},
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},
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{
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desc: "respects line style set explicitly",
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canvas: image.Rect(0, 0, 3, 1),
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lines: []HVLine{
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{
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Start: image.Point{0, 0},
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End: image.Point{2, 0},
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},
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},
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opts: []HVLineOption{
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HVLineStyle(linestyle.Light),
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},
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want: func(size image.Point) *faketerm.Terminal {
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ft := faketerm.MustNew(size)
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c := testcanvas.MustNew(ft.Area())
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parts := lineStyleChars[linestyle.Light]
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testcanvas.MustSetCell(c, image.Point{0, 0}, parts[hLine])
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testcanvas.MustSetCell(c, image.Point{1, 0}, parts[hLine])
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testcanvas.MustSetCell(c, image.Point{2, 0}, parts[hLine])
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testcanvas.MustApply(c, ft)
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return ft
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},
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},
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{
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desc: "respects cell options",
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canvas: image.Rect(0, 0, 3, 1),
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lines: []HVLine{
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{
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Start: image.Point{0, 0},
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End: image.Point{2, 0},
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},
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},
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opts: []HVLineOption{
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HVLineCellOpts(
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cell.FgColor(cell.ColorYellow),
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cell.BgColor(cell.ColorBlue),
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),
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},
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want: func(size image.Point) *faketerm.Terminal {
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ft := faketerm.MustNew(size)
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c := testcanvas.MustNew(ft.Area())
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parts := lineStyleChars[linestyle.Light]
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testcanvas.MustSetCell(c, image.Point{0, 0}, parts[hLine],
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cell.FgColor(cell.ColorYellow),
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cell.BgColor(cell.ColorBlue),
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)
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testcanvas.MustSetCell(c, image.Point{1, 0}, parts[hLine],
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cell.FgColor(cell.ColorYellow),
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cell.BgColor(cell.ColorBlue),
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)
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testcanvas.MustSetCell(c, image.Point{2, 0}, parts[hLine],
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cell.FgColor(cell.ColorYellow),
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cell.BgColor(cell.ColorBlue),
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)
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testcanvas.MustApply(c, ft)
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return ft
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},
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},
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{
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desc: "draws single horizontal line, supplied in reverse direction",
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canvas: image.Rect(0, 0, 3, 1),
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lines: []HVLine{
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{
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Start: image.Point{1, 0},
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End: image.Point{0, 0},
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},
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},
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want: func(size image.Point) *faketerm.Terminal {
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ft := faketerm.MustNew(size)
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c := testcanvas.MustNew(ft.Area())
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parts := lineStyleChars[linestyle.Light]
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testcanvas.MustSetCell(c, image.Point{0, 0}, parts[hLine])
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testcanvas.MustSetCell(c, image.Point{1, 0}, parts[hLine])
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testcanvas.MustApply(c, ft)
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return ft
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},
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},
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{
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desc: "draws single vertical line",
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canvas: image.Rect(0, 0, 3, 3),
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lines: []HVLine{
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{
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Start: image.Point{1, 0},
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End: image.Point{1, 2},
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},
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},
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want: func(size image.Point) *faketerm.Terminal {
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ft := faketerm.MustNew(size)
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c := testcanvas.MustNew(ft.Area())
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parts := lineStyleChars[linestyle.Light]
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testcanvas.MustSetCell(c, image.Point{1, 0}, parts[vLine])
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testcanvas.MustSetCell(c, image.Point{1, 1}, parts[vLine])
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testcanvas.MustSetCell(c, image.Point{1, 2}, parts[vLine])
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testcanvas.MustApply(c, ft)
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return ft
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},
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},
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{
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desc: "draws single vertical line, supplied in reverse direction",
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canvas: image.Rect(0, 0, 3, 3),
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lines: []HVLine{
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{
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Start: image.Point{1, 1},
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End: image.Point{1, 0},
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},
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},
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want: func(size image.Point) *faketerm.Terminal {
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ft := faketerm.MustNew(size)
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c := testcanvas.MustNew(ft.Area())
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parts := lineStyleChars[linestyle.Light]
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testcanvas.MustSetCell(c, image.Point{1, 0}, parts[vLine])
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testcanvas.MustSetCell(c, image.Point{1, 1}, parts[vLine])
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testcanvas.MustApply(c, ft)
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return ft
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},
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},
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{
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desc: "parallel horizontal lines don't affect each other",
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canvas: image.Rect(0, 0, 3, 3),
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lines: []HVLine{
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{
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Start: image.Point{0, 0},
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End: image.Point{2, 0},
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},
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{
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Start: image.Point{0, 1},
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End: image.Point{2, 1},
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},
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},
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want: func(size image.Point) *faketerm.Terminal {
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ft := faketerm.MustNew(size)
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c := testcanvas.MustNew(ft.Area())
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parts := lineStyleChars[linestyle.Light]
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testcanvas.MustSetCell(c, image.Point{0, 0}, parts[hLine])
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testcanvas.MustSetCell(c, image.Point{1, 0}, parts[hLine])
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testcanvas.MustSetCell(c, image.Point{2, 0}, parts[hLine])
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testcanvas.MustSetCell(c, image.Point{0, 1}, parts[hLine])
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testcanvas.MustSetCell(c, image.Point{1, 1}, parts[hLine])
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testcanvas.MustSetCell(c, image.Point{2, 1}, parts[hLine])
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testcanvas.MustApply(c, ft)
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return ft
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},
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},
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{
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desc: "parallel vertical lines don't affect each other",
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canvas: image.Rect(0, 0, 3, 3),
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lines: []HVLine{
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{
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Start: image.Point{0, 0},
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End: image.Point{0, 2},
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},
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{
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Start: image.Point{1, 0},
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End: image.Point{1, 2},
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},
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},
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want: func(size image.Point) *faketerm.Terminal {
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ft := faketerm.MustNew(size)
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c := testcanvas.MustNew(ft.Area())
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parts := lineStyleChars[linestyle.Light]
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testcanvas.MustSetCell(c, image.Point{0, 0}, parts[vLine])
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testcanvas.MustSetCell(c, image.Point{0, 1}, parts[vLine])
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testcanvas.MustSetCell(c, image.Point{0, 2}, parts[vLine])
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testcanvas.MustSetCell(c, image.Point{1, 0}, parts[vLine])
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testcanvas.MustSetCell(c, image.Point{1, 1}, parts[vLine])
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testcanvas.MustSetCell(c, image.Point{1, 2}, parts[vLine])
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testcanvas.MustApply(c, ft)
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return ft
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},
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},
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{
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desc: "perpendicular lines that don't cross don't affect each other",
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canvas: image.Rect(0, 0, 3, 3),
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lines: []HVLine{
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{
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Start: image.Point{0, 0},
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End: image.Point{0, 2},
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},
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{
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Start: image.Point{1, 1},
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End: image.Point{2, 1},
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},
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},
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want: func(size image.Point) *faketerm.Terminal {
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ft := faketerm.MustNew(size)
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c := testcanvas.MustNew(ft.Area())
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parts := lineStyleChars[linestyle.Light]
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testcanvas.MustSetCell(c, image.Point{0, 0}, parts[vLine])
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testcanvas.MustSetCell(c, image.Point{0, 1}, parts[vLine])
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testcanvas.MustSetCell(c, image.Point{0, 2}, parts[vLine])
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testcanvas.MustSetCell(c, image.Point{1, 1}, parts[hLine])
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testcanvas.MustSetCell(c, image.Point{2, 1}, parts[hLine])
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testcanvas.MustApply(c, ft)
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return ft
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},
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},
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{
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desc: "draws top left corner",
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canvas: image.Rect(0, 0, 3, 3),
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lines: []HVLine{
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{
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Start: image.Point{0, 0},
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End: image.Point{0, 2},
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},
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{
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Start: image.Point{0, 0},
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End: image.Point{2, 0},
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},
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},
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want: func(size image.Point) *faketerm.Terminal {
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ft := faketerm.MustNew(size)
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c := testcanvas.MustNew(ft.Area())
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parts := lineStyleChars[linestyle.Light]
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testcanvas.MustSetCell(c, image.Point{0, 0}, parts[topLeftCorner])
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testcanvas.MustSetCell(c, image.Point{0, 1}, parts[vLine])
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testcanvas.MustSetCell(c, image.Point{0, 2}, parts[vLine])
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testcanvas.MustSetCell(c, image.Point{1, 0}, parts[hLine])
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testcanvas.MustSetCell(c, image.Point{2, 0}, parts[hLine])
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testcanvas.MustApply(c, ft)
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return ft
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},
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},
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{
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desc: "draws top right corner",
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canvas: image.Rect(0, 0, 3, 3),
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lines: []HVLine{
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{
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Start: image.Point{2, 0},
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End: image.Point{2, 2},
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},
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{
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Start: image.Point{0, 0},
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End: image.Point{2, 0},
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},
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},
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want: func(size image.Point) *faketerm.Terminal {
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ft := faketerm.MustNew(size)
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c := testcanvas.MustNew(ft.Area())
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parts := lineStyleChars[linestyle.Light]
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testcanvas.MustSetCell(c, image.Point{2, 0}, parts[topRightCorner])
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testcanvas.MustSetCell(c, image.Point{2, 1}, parts[vLine])
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testcanvas.MustSetCell(c, image.Point{2, 2}, parts[vLine])
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testcanvas.MustSetCell(c, image.Point{0, 0}, parts[hLine])
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testcanvas.MustSetCell(c, image.Point{1, 0}, parts[hLine])
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testcanvas.MustApply(c, ft)
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return ft
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},
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},
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{
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desc: "draws bottom left corner",
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canvas: image.Rect(0, 0, 3, 3),
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lines: []HVLine{
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{
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Start: image.Point{0, 0},
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End: image.Point{0, 2},
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},
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{
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Start: image.Point{0, 2},
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End: image.Point{2, 2},
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},
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},
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want: func(size image.Point) *faketerm.Terminal {
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ft := faketerm.MustNew(size)
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c := testcanvas.MustNew(ft.Area())
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parts := lineStyleChars[linestyle.Light]
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testcanvas.MustSetCell(c, image.Point{0, 0}, parts[vLine])
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testcanvas.MustSetCell(c, image.Point{0, 1}, parts[vLine])
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testcanvas.MustSetCell(c, image.Point{0, 2}, parts[bottomLeftCorner])
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testcanvas.MustSetCell(c, image.Point{1, 2}, parts[hLine])
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testcanvas.MustSetCell(c, image.Point{2, 2}, parts[hLine])
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testcanvas.MustApply(c, ft)
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return ft
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},
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},
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{
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desc: "draws bottom right corner",
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canvas: image.Rect(0, 0, 3, 3),
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lines: []HVLine{
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{
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Start: image.Point{2, 0},
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End: image.Point{2, 2},
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},
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{
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Start: image.Point{0, 2},
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End: image.Point{2, 2},
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},
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},
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want: func(size image.Point) *faketerm.Terminal {
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ft := faketerm.MustNew(size)
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c := testcanvas.MustNew(ft.Area())
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parts := lineStyleChars[linestyle.Light]
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testcanvas.MustSetCell(c, image.Point{2, 0}, parts[vLine])
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testcanvas.MustSetCell(c, image.Point{2, 1}, parts[vLine])
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testcanvas.MustSetCell(c, image.Point{2, 2}, parts[bottomRightCorner])
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testcanvas.MustSetCell(c, image.Point{0, 2}, parts[hLine])
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testcanvas.MustSetCell(c, image.Point{1, 2}, parts[hLine])
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testcanvas.MustApply(c, ft)
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return ft
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},
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},
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{
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desc: "draws T horizontal and up",
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canvas: image.Rect(0, 0, 3, 3),
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lines: []HVLine{
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{
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Start: image.Point{0, 2},
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End: image.Point{2, 2},
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},
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{
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Start: image.Point{1, 0},
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End: image.Point{1, 2},
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},
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},
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want: func(size image.Point) *faketerm.Terminal {
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ft := faketerm.MustNew(size)
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c := testcanvas.MustNew(ft.Area())
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parts := lineStyleChars[linestyle.Light]
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testcanvas.MustSetCell(c, image.Point{0, 2}, parts[hLine])
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testcanvas.MustSetCell(c, image.Point{1, 2}, parts[hAndUp])
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testcanvas.MustSetCell(c, image.Point{2, 2}, parts[hLine])
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testcanvas.MustSetCell(c, image.Point{1, 0}, parts[vLine])
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testcanvas.MustSetCell(c, image.Point{1, 1}, parts[vLine])
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testcanvas.MustApply(c, ft)
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return ft
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},
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},
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{
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desc: "draws T horizontal and down",
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canvas: image.Rect(0, 0, 3, 3),
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lines: []HVLine{
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{
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Start: image.Point{0, 0},
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End: image.Point{2, 0},
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},
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{
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Start: image.Point{1, 0},
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End: image.Point{1, 2},
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},
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},
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want: func(size image.Point) *faketerm.Terminal {
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ft := faketerm.MustNew(size)
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c := testcanvas.MustNew(ft.Area())
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parts := lineStyleChars[linestyle.Light]
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testcanvas.MustSetCell(c, image.Point{0, 0}, parts[hLine])
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testcanvas.MustSetCell(c, image.Point{1, 0}, parts[hAndDown])
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testcanvas.MustSetCell(c, image.Point{2, 0}, parts[hLine])
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testcanvas.MustSetCell(c, image.Point{1, 1}, parts[vLine])
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testcanvas.MustSetCell(c, image.Point{1, 2}, parts[vLine])
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testcanvas.MustApply(c, ft)
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return ft
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},
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},
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{
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desc: "draws T vertical and left",
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canvas: image.Rect(0, 0, 3, 3),
|
|
lines: []HVLine{
|
|
{
|
|
Start: image.Point{0, 1},
|
|
End: image.Point{2, 1},
|
|
},
|
|
{
|
|
Start: image.Point{2, 0},
|
|
End: image.Point{2, 2},
|
|
},
|
|
},
|
|
want: func(size image.Point) *faketerm.Terminal {
|
|
ft := faketerm.MustNew(size)
|
|
c := testcanvas.MustNew(ft.Area())
|
|
|
|
parts := lineStyleChars[linestyle.Light]
|
|
testcanvas.MustSetCell(c, image.Point{0, 1}, parts[hLine])
|
|
testcanvas.MustSetCell(c, image.Point{1, 1}, parts[hLine])
|
|
testcanvas.MustSetCell(c, image.Point{2, 1}, parts[vAndLeft])
|
|
|
|
testcanvas.MustSetCell(c, image.Point{2, 0}, parts[vLine])
|
|
testcanvas.MustSetCell(c, image.Point{2, 2}, parts[vLine])
|
|
|
|
testcanvas.MustApply(c, ft)
|
|
return ft
|
|
},
|
|
},
|
|
{
|
|
desc: "draws T vertical and right",
|
|
canvas: image.Rect(0, 0, 3, 3),
|
|
lines: []HVLine{
|
|
{
|
|
Start: image.Point{0, 1},
|
|
End: image.Point{2, 1},
|
|
},
|
|
{
|
|
Start: image.Point{0, 0},
|
|
End: image.Point{0, 2},
|
|
},
|
|
},
|
|
want: func(size image.Point) *faketerm.Terminal {
|
|
ft := faketerm.MustNew(size)
|
|
c := testcanvas.MustNew(ft.Area())
|
|
|
|
parts := lineStyleChars[linestyle.Light]
|
|
testcanvas.MustSetCell(c, image.Point{0, 1}, parts[vAndRight])
|
|
testcanvas.MustSetCell(c, image.Point{1, 1}, parts[hLine])
|
|
testcanvas.MustSetCell(c, image.Point{2, 1}, parts[hLine])
|
|
|
|
testcanvas.MustSetCell(c, image.Point{0, 0}, parts[vLine])
|
|
testcanvas.MustSetCell(c, image.Point{0, 2}, parts[vLine])
|
|
|
|
testcanvas.MustApply(c, ft)
|
|
return ft
|
|
},
|
|
},
|
|
{
|
|
desc: "draws a cross",
|
|
canvas: image.Rect(0, 0, 3, 3),
|
|
lines: []HVLine{
|
|
{
|
|
Start: image.Point{0, 1},
|
|
End: image.Point{2, 1},
|
|
},
|
|
{
|
|
Start: image.Point{1, 0},
|
|
End: image.Point{1, 2},
|
|
},
|
|
},
|
|
want: func(size image.Point) *faketerm.Terminal {
|
|
ft := faketerm.MustNew(size)
|
|
c := testcanvas.MustNew(ft.Area())
|
|
|
|
parts := lineStyleChars[linestyle.Light]
|
|
testcanvas.MustSetCell(c, image.Point{0, 1}, parts[hLine])
|
|
testcanvas.MustSetCell(c, image.Point{1, 1}, parts[vAndH])
|
|
testcanvas.MustSetCell(c, image.Point{2, 1}, parts[hLine])
|
|
|
|
testcanvas.MustSetCell(c, image.Point{1, 0}, parts[vLine])
|
|
testcanvas.MustSetCell(c, image.Point{1, 2}, parts[vLine])
|
|
|
|
testcanvas.MustApply(c, ft)
|
|
return ft
|
|
},
|
|
},
|
|
{
|
|
desc: "draws multiple crossings",
|
|
canvas: image.Rect(0, 0, 3, 3),
|
|
lines: []HVLine{
|
|
// Three horizontal lines.
|
|
{
|
|
Start: image.Point{0, 0},
|
|
End: image.Point{2, 0},
|
|
},
|
|
{
|
|
Start: image.Point{0, 1},
|
|
End: image.Point{2, 1},
|
|
},
|
|
{
|
|
Start: image.Point{0, 2},
|
|
End: image.Point{2, 2},
|
|
},
|
|
// Three vertical lines.
|
|
{
|
|
Start: image.Point{0, 0},
|
|
End: image.Point{0, 2},
|
|
},
|
|
{
|
|
Start: image.Point{1, 0},
|
|
End: image.Point{1, 2},
|
|
},
|
|
{
|
|
Start: image.Point{2, 0},
|
|
End: image.Point{2, 2},
|
|
},
|
|
},
|
|
want: func(size image.Point) *faketerm.Terminal {
|
|
ft := faketerm.MustNew(size)
|
|
c := testcanvas.MustNew(ft.Area())
|
|
|
|
parts := lineStyleChars[linestyle.Light]
|
|
testcanvas.MustSetCell(c, image.Point{0, 0}, parts[topLeftCorner])
|
|
testcanvas.MustSetCell(c, image.Point{1, 0}, parts[hAndDown])
|
|
testcanvas.MustSetCell(c, image.Point{2, 0}, parts[topRightCorner])
|
|
|
|
testcanvas.MustSetCell(c, image.Point{0, 1}, parts[vAndRight])
|
|
testcanvas.MustSetCell(c, image.Point{1, 1}, parts[vAndH])
|
|
testcanvas.MustSetCell(c, image.Point{2, 1}, parts[vAndLeft])
|
|
|
|
testcanvas.MustSetCell(c, image.Point{0, 2}, parts[bottomLeftCorner])
|
|
testcanvas.MustSetCell(c, image.Point{1, 2}, parts[hAndUp])
|
|
testcanvas.MustSetCell(c, image.Point{2, 2}, parts[bottomRightCorner])
|
|
|
|
testcanvas.MustApply(c, ft)
|
|
return ft
|
|
},
|
|
},
|
|
}
|
|
|
|
for _, tc := range tests {
|
|
t.Run(tc.desc, func(t *testing.T) {
|
|
c, err := canvas.New(tc.canvas)
|
|
if err != nil {
|
|
t.Fatalf("canvas.New => unexpected error: %v", err)
|
|
}
|
|
|
|
err = HVLines(c, tc.lines, tc.opts...)
|
|
if (err != nil) != tc.wantErr {
|
|
t.Errorf("HVLines => unexpected error: %v, wantErr: %v", err, tc.wantErr)
|
|
}
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
got, err := faketerm.New(c.Size())
|
|
if err != nil {
|
|
t.Fatalf("faketerm.New => unexpected error: %v", err)
|
|
}
|
|
|
|
if err := c.Apply(got); err != nil {
|
|
t.Fatalf("Apply => unexpected error: %v", err)
|
|
}
|
|
|
|
if diff := faketerm.Diff(tc.want(c.Size()), got); diff != "" {
|
|
t.Errorf("HVLines => %v", diff)
|
|
}
|
|
})
|
|
}
|
|
}
|