mirror of https://github.com/mum4k/termdash.git
422 lines
12 KiB
Go
422 lines
12 KiB
Go
// Copyright 2019 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/internal/canvas"
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"github.com/mum4k/termdash/internal/canvas/testcanvas"
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"github.com/mum4k/termdash/internal/faketerm"
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)
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func TestVerticalText(t *testing.T) {
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tests := []struct {
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desc string
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canvas image.Rectangle
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text string
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start image.Point
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opts []VerticalTextOption
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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: "start falls outside of the canvas",
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canvas: image.Rect(0, 0, 2, 2),
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start: image.Point{2, 2},
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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: "unsupported overrun mode specified",
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canvas: image.Rect(0, 0, 1, 1),
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text: "ab",
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start: image.Point{0, 0},
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opts: []VerticalTextOption{
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VerticalTextOverrunMode(OverrunMode(-1)),
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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: "zero text",
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canvas: image.Rect(0, 0, 1, 1),
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text: "",
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start: image.Point{0, 0},
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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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},
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{
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desc: "text falls outside of the canvas on OverrunModeStrict",
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canvas: image.Rect(0, 0, 1, 1),
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text: "ab",
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start: image.Point{0, 0},
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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: "text falls outside of the canvas because the rune is full-width on OverrunModeStrict",
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canvas: image.Rect(0, 0, 1, 1),
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text: "界",
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start: image.Point{0, 0},
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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: "text falls outside of the canvas on OverrunModeTrim",
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canvas: image.Rect(0, 0, 1, 1),
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text: "ab",
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start: image.Point{0, 0},
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opts: []VerticalTextOption{
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VerticalTextOverrunMode(OverrunModeTrim),
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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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testcanvas.MustSetCell(c, image.Point{0, 0}, 'a')
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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: "text falls outside of the canvas because the rune is full-width on OverrunModeTrim",
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canvas: image.Rect(0, 0, 1, 1),
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text: "界",
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start: image.Point{0, 0},
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opts: []VerticalTextOption{
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VerticalTextOverrunMode(OverrunModeTrim),
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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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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: "OverrunModeTrim trims longer text",
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canvas: image.Rect(0, 0, 1, 2),
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text: "abcdef",
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start: image.Point{0, 0},
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opts: []VerticalTextOption{
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VerticalTextOverrunMode(OverrunModeTrim),
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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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testcanvas.MustSetCell(c, image.Point{0, 0}, 'a')
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testcanvas.MustSetCell(c, image.Point{0, 1}, 'b')
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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: "OverrunModeTrim trims longer text with full-width runes, trim falls before the rune",
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canvas: image.Rect(0, 0, 1, 2),
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text: "ab界",
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start: image.Point{0, 0},
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opts: []VerticalTextOption{
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VerticalTextOverrunMode(OverrunModeTrim),
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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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testcanvas.MustSetCell(c, image.Point{0, 0}, 'a')
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testcanvas.MustSetCell(c, image.Point{0, 1}, 'b')
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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: "OverrunModeTrim trims longer text with full-width runes, trim falls on the rune",
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canvas: image.Rect(0, 0, 1, 2),
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text: "a界",
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start: image.Point{0, 0},
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opts: []VerticalTextOption{
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VerticalTextOverrunMode(OverrunModeTrim),
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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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testcanvas.MustSetCell(c, image.Point{0, 0}, 'a')
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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: "text falls outside of the canvas on OverrunModeThreeDot",
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canvas: image.Rect(0, 0, 1, 1),
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text: "ab",
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start: image.Point{0, 0},
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opts: []VerticalTextOption{
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VerticalTextOverrunMode(OverrunModeThreeDot),
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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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testcanvas.MustSetCell(c, image.Point{0, 0}, '…')
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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: "text falls outside of the canvas because the rune is full-width on OverrunModeThreeDot",
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canvas: image.Rect(0, 0, 1, 1),
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text: "界",
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start: image.Point{0, 0},
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opts: []VerticalTextOption{
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VerticalTextOverrunMode(OverrunModeThreeDot),
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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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testcanvas.MustSetCell(c, image.Point{0, 0}, '…')
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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: "OverrunModeThreeDot trims longer text",
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canvas: image.Rect(0, 0, 1, 2),
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text: "abcdef",
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start: image.Point{0, 0},
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opts: []VerticalTextOption{
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VerticalTextOverrunMode(OverrunModeThreeDot),
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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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testcanvas.MustSetCell(c, image.Point{0, 0}, 'a')
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testcanvas.MustSetCell(c, image.Point{0, 1}, '…')
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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: "OverrunModeThreeDot trims longer text with full-width runes, trim falls before the rune",
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canvas: image.Rect(0, 0, 1, 2),
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text: "ab界",
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start: image.Point{0, 0},
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opts: []VerticalTextOption{
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VerticalTextOverrunMode(OverrunModeThreeDot),
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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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testcanvas.MustSetCell(c, image.Point{0, 0}, 'a')
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testcanvas.MustSetCell(c, image.Point{0, 1}, '…')
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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: "OverrunModeThreeDot trims longer text with full-width runes, trim falls on the rune",
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canvas: image.Rect(0, 0, 1, 2),
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text: "a界",
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start: image.Point{0, 0},
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opts: []VerticalTextOption{
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VerticalTextOverrunMode(OverrunModeThreeDot),
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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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testcanvas.MustSetCell(c, image.Point{0, 0}, 'a')
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testcanvas.MustSetCell(c, image.Point{0, 1}, '…')
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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: "requested MaxY is negative",
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canvas: image.Rect(0, 0, 1, 1),
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text: "",
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start: image.Point{0, 0},
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opts: []VerticalTextOption{
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VerticalTextMaxY(-1),
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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: "requested MaxY is greater than canvas height",
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canvas: image.Rect(0, 0, 1, 1),
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text: "",
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start: image.Point{0, 0},
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opts: []VerticalTextOption{
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VerticalTextMaxY(2),
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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: "text falls outside of requested MaxY",
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canvas: image.Rect(0, 0, 2, 3),
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text: "ab",
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start: image.Point{1, 1},
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opts: []VerticalTextOption{
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VerticalTextMaxY(2),
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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: "text is empty, nothing to do",
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canvas: image.Rect(0, 0, 1, 1),
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text: "",
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start: image.Point{0, 0},
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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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},
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{
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desc: "draws text",
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canvas: image.Rect(0, 0, 2, 3),
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text: "ab",
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start: image.Point{1, 1},
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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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testcanvas.MustSetCell(c, image.Point{1, 1}, 'a')
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testcanvas.MustSetCell(c, image.Point{1, 2}, 'b')
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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 text with cell options",
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canvas: image.Rect(0, 0, 2, 3),
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text: "ab",
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start: image.Point{1, 1},
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opts: []VerticalTextOption{
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VerticalTextCellOpts(cell.FgColor(cell.ColorRed)),
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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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testcanvas.MustSetCell(c, image.Point{1, 1}, 'a', cell.FgColor(cell.ColorRed))
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testcanvas.MustSetCell(c, image.Point{1, 2}, 'b', cell.FgColor(cell.ColorRed))
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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 a half-width unicode character",
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canvas: image.Rect(0, 0, 1, 1),
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text: "⇄",
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start: image.Point{0, 0},
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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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testcanvas.MustSetCell(c, image.Point{0, 0}, '⇄')
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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 multiple half-width unicode characters",
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canvas: image.Rect(0, 0, 3, 3),
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text: "⇄࿃°",
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start: image.Point{0, 0},
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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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testcanvas.MustSetCell(c, image.Point{0, 0}, '⇄')
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testcanvas.MustSetCell(c, image.Point{0, 1}, '࿃')
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testcanvas.MustSetCell(c, image.Point{0, 2}, '°')
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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 multiple full-width unicode characters",
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canvas: image.Rect(0, 0, 3, 10),
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text: "你好，世界",
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start: image.Point{0, 0},
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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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testcanvas.MustSetCell(c, image.Point{0, 0}, '你')
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testcanvas.MustSetCell(c, image.Point{0, 2}, '好')
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testcanvas.MustSetCell(c, image.Point{0, 4}, '，')
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testcanvas.MustSetCell(c, image.Point{0, 6}, '世')
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testcanvas.MustSetCell(c, image.Point{0, 8}, '界')
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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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for _, tc := range tests {
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t.Run(tc.desc, func(t *testing.T) {
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c, err := canvas.New(tc.canvas)
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if err != nil {
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t.Fatalf("canvas.New => unexpected error: %v", err)
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}
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err = VerticalText(c, tc.text, tc.start, tc.opts...)
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if (err != nil) != tc.wantErr {
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t.Errorf("VerticalText => unexpected error: %v, wantErr: %v", err, tc.wantErr)
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}
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if err != nil {
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return
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}
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got, err := faketerm.New(c.Size())
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if err != nil {
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t.Fatalf("faketerm.New => unexpected error: %v", err)
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}
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if err := c.Apply(got); err != nil {
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t.Fatalf("Apply => unexpected error: %v", err)
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}
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if diff := faketerm.Diff(tc.want(c.Size()), got); diff != "" {
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t.Errorf("VerticalText => %v", diff)
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}
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})
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}
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}
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