mirror of https://github.com/mum4k/termdash.git
657 lines
17 KiB
Go
657 lines
17 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/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 TestTrimText(t *testing.T) {
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tests := []struct {
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desc string
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text string
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maxCells int
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om OverrunMode
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want string
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wantErr bool
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}{
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{
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desc: "text is empty",
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text: "",
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maxCells: 1,
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om: OverrunModeTrim,
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want: "",
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},
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{
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desc: "zero max cells",
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text: "ab",
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maxCells: 0,
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om: OverrunModeTrim,
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wantErr: true,
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},
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{
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desc: "unsupported overrun mode",
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text: "ab",
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maxCells: 1,
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om: OverrunMode(-1),
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wantErr: true,
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},
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{
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desc: "half-width runes, OverrunModeStrict, text fits exactly",
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text: "ab",
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maxCells: 2,
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om: OverrunModeStrict,
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want: "ab",
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},
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{
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desc: "half-width runes, OverrunModeTrim, text fits exactly",
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text: "ab",
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maxCells: 2,
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om: OverrunModeTrim,
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want: "ab",
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},
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{
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desc: "half-width runes, OverrunModeThreeDot, text fits exactly",
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text: "ab",
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maxCells: 2,
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om: OverrunModeThreeDot,
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want: "ab",
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},
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{
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desc: "full-width runes, OverrunModeStrict, text fits exactly",
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text: "你好",
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maxCells: 4,
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om: OverrunModeStrict,
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want: "你好",
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},
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{
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desc: "full-width runes, OverrunModeTrim, text fits exactly",
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text: "你好",
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maxCells: 4,
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om: OverrunModeTrim,
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want: "你好",
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},
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{
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desc: "full-width runes, OverrunModeThreeDot, text fits exactly",
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text: "你好",
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maxCells: 4,
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om: OverrunModeThreeDot,
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want: "你好",
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},
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{
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desc: "half-width runes, OverrunModeStrict, text overruns",
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text: "ab",
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maxCells: 1,
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om: OverrunModeStrict,
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wantErr: true,
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},
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{
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desc: "half-width runes, OverrunModeTrim, text overruns",
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text: "ab",
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maxCells: 1,
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om: OverrunModeTrim,
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want: "a",
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},
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{
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desc: "half-width runes, OverrunModeThreeDot, text overruns at the beginning",
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text: "ab",
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maxCells: 1,
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om: OverrunModeThreeDot,
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want: "…",
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},
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{
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desc: "half-width runes, OverrunModeThreeDot, text overruns in the middle",
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text: "abc",
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maxCells: 2,
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om: OverrunModeThreeDot,
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want: "a…",
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},
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{
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desc: "full-width runes, OverrunModeStrict, text overruns",
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text: "你好",
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maxCells: 1,
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om: OverrunModeStrict,
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wantErr: true,
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},
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{
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desc: "full-width runes, OverrunModeTrim, text overruns at the beginning on rune boundary",
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text: "你好",
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maxCells: 2,
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om: OverrunModeTrim,
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want: "你",
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},
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{
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desc: "full-width runes, OverrunModeThreeDot, text overruns at the beginning on rune boundary",
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text: "你好",
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maxCells: 2,
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om: OverrunModeThreeDot,
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want: "…",
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},
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{
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desc: "full-width runes, OverrunModeTrim, text overruns in the middle on rune boundary",
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text: "你好你好",
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maxCells: 4,
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om: OverrunModeTrim,
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want: "你好",
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},
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{
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desc: "full-width runes, OverrunModeThreeDot, text overruns in the middle on rune boundary",
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text: "你好你好",
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maxCells: 4,
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om: OverrunModeThreeDot,
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want: "你…",
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},
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{
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desc: "full-width runes, OverrunModeTrim, text overruns at the beginning, cuts rune in half",
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text: "你好",
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maxCells: 1,
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om: OverrunModeTrim,
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want: "",
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},
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{
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desc: "full-width runes, OverrunModeThreeDot, text overruns at the beginning, cuts rune in half",
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text: "你好",
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maxCells: 1,
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om: OverrunModeThreeDot,
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want: "…",
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},
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{
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desc: "full-width runes, OverrunModeTrim, text overruns in the middle, cuts rune in half",
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text: "你好你好",
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maxCells: 3,
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om: OverrunModeTrim,
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want: "你",
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},
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{
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desc: "full-width runes, OverrunModeThreeDot, text overruns in the middle, cuts rune in half",
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text: "你好你好",
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maxCells: 3,
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om: OverrunModeThreeDot,
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want: "你…",
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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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got, err := TrimText(tc.text, tc.maxCells, tc.om)
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if (err != nil) != tc.wantErr {
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t.Fatalf("TrimText => 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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if got != tc.want {
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t.Errorf("TrimText =>\n got: %q\nwant: %q", got, tc.want)
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}
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})
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}
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}
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func TestText(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 []TextOption
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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: []TextOption{
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TextOverrunMode(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: []TextOption{
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TextOverrunMode(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: []TextOption{
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TextOverrunMode(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, 2, 1),
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text: "abcdef",
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start: image.Point{0, 0},
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opts: []TextOption{
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TextOverrunMode(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{1, 0}, '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, 2, 1),
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text: "ab界",
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start: image.Point{0, 0},
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opts: []TextOption{
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TextOverrunMode(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{1, 0}, '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, 2, 1),
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text: "a界",
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start: image.Point{0, 0},
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opts: []TextOption{
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TextOverrunMode(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: []TextOption{
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TextOverrunMode(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: []TextOption{
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TextOverrunMode(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, 2, 1),
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text: "abcdef",
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start: image.Point{0, 0},
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opts: []TextOption{
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TextOverrunMode(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{1, 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 with full-width runes, trim falls before the rune",
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canvas: image.Rect(0, 0, 2, 1),
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text: "ab界",
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start: image.Point{0, 0},
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opts: []TextOption{
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TextOverrunMode(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{1, 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 with full-width runes, trim falls on the rune",
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canvas: image.Rect(0, 0, 2, 1),
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text: "a界",
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start: image.Point{0, 0},
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opts: []TextOption{
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TextOverrunMode(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{1, 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: "requested MaxX 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: []TextOption{
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TextMaxX(-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 MaxX is greater than canvas width",
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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: []TextOption{
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TextMaxX(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 MaxX",
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canvas: image.Rect(0, 0, 3, 2),
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text: "ab",
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start: image.Point{1, 1},
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opts: []TextOption{
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TextMaxX(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, 3, 2),
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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{2, 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: "draws text with cell options",
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canvas: image.Rect(0, 0, 3, 2),
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text: "ab",
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start: image.Point{1, 1},
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opts: []TextOption{
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TextCellOpts(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{2, 1}, '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",
|
||
canvas: image.Rect(0, 0, 1, 1),
|
||
text: "⇄",
|
||
start: image.Point{0, 0},
|
||
want: func(size image.Point) *faketerm.Terminal {
|
||
ft := faketerm.MustNew(size)
|
||
c := testcanvas.MustNew(ft.Area())
|
||
|
||
testcanvas.MustSetCell(c, image.Point{0, 0}, '⇄')
|
||
testcanvas.MustApply(c, ft)
|
||
return ft
|
||
},
|
||
},
|
||
{
|
||
desc: "draws multiple half-width unicode characters",
|
||
canvas: image.Rect(0, 0, 3, 3),
|
||
text: "⇄࿃°",
|
||
start: image.Point{0, 0},
|
||
want: func(size image.Point) *faketerm.Terminal {
|
||
ft := faketerm.MustNew(size)
|
||
c := testcanvas.MustNew(ft.Area())
|
||
|
||
testcanvas.MustSetCell(c, image.Point{0, 0}, '⇄')
|
||
testcanvas.MustSetCell(c, image.Point{1, 0}, '࿃')
|
||
testcanvas.MustSetCell(c, image.Point{2, 0}, '°')
|
||
testcanvas.MustApply(c, ft)
|
||
return ft
|
||
},
|
||
},
|
||
{
|
||
desc: "draws multiple full-width unicode characters",
|
||
canvas: image.Rect(0, 0, 10, 3),
|
||
text: "你好，世界",
|
||
start: image.Point{0, 0},
|
||
want: func(size image.Point) *faketerm.Terminal {
|
||
ft := faketerm.MustNew(size)
|
||
c := testcanvas.MustNew(ft.Area())
|
||
|
||
testcanvas.MustSetCell(c, image.Point{0, 0}, '你')
|
||
testcanvas.MustSetCell(c, image.Point{2, 0}, '好')
|
||
testcanvas.MustSetCell(c, image.Point{4, 0}, '，')
|
||
testcanvas.MustSetCell(c, image.Point{6, 0}, '世')
|
||
testcanvas.MustSetCell(c, image.Point{8, 0}, '界')
|
||
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 = Text(c, tc.text, tc.start, tc.opts...)
|
||
if (err != nil) != tc.wantErr {
|
||
t.Errorf("Text => 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("Text => %v", diff)
|
||
}
|
||
})
|
||
}
|
||
}
|
||
|
||
func TestResizeNeeded(t *testing.T) {
|
||
tests := []struct {
|
||
desc string
|
||
canvas image.Rectangle
|
||
want func(size image.Point) *faketerm.Terminal
|
||
}{
|
||
{
|
||
desc: "draws the resize needed character",
|
||
canvas: image.Rect(0, 0, 1, 1),
|
||
want: func(size image.Point) *faketerm.Terminal {
|
||
ft := faketerm.MustNew(size)
|
||
cvs := testcanvas.MustNew(ft.Area())
|
||
testcanvas.MustSetCell(cvs, image.Point{0, 0}, '⇄')
|
||
testcanvas.MustApply(cvs, ft)
|
||
return ft
|
||
},
|
||
},
|
||
}
|
||
|
||
for _, tc := range tests {
|
||
t.Run(tc.desc, func(t *testing.T) {
|
||
cvs, err := canvas.New(tc.canvas)
|
||
if err != nil {
|
||
t.Fatalf("canvas.New => unexpected error: %v", err)
|
||
}
|
||
|
||
if err := ResizeNeeded(cvs); err != nil {
|
||
t.Fatalf("ResizeNeeded => unexpected error: %v", err)
|
||
}
|
||
|
||
got, err := faketerm.New(cvs.Size())
|
||
if err != nil {
|
||
t.Fatalf("faketerm.New => unexpected error: %v", err)
|
||
}
|
||
if err := cvs.Apply(got); err != nil {
|
||
t.Fatalf("Apply => unexpected error: %v", err)
|
||
}
|
||
|
||
want, err := faketerm.New(cvs.Size())
|
||
if err != nil {
|
||
t.Fatalf("faketerm.New => unexpected error: %v", err)
|
||
}
|
||
if tc.want != nil {
|
||
want = tc.want(cvs.Size())
|
||
}
|
||
|
||
if diff := faketerm.Diff(want, got); diff != "" {
|
||
t.Errorf("ResizeNeeded => %v", diff)
|
||
}
|
||
})
|
||
}
|
||
}
|