After commit c018f5fd29 Fenrir is being switched over to go. If you do not want to be part of the testing process, please switch to master.
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// Copyright (c) 2026 Storm Dragon
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// SPDX-License-Identifier: GPL-3.0-or-later
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package review
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import (
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"git.stormux.org/storm/fenrir/internal/command"
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"git.stormux.org/storm/fenrir/internal/presentation"
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"git.stormux.org/storm/fenrir/internal/screen"
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"testing"
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)
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func TestCharacterCrossesPhysicalRowsAndKeepsCharacterMetadata(t *testing.T) {
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for _, feedback := range []bool{false, true} {
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var r Review
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r.Configure(feedback, feedback, true)
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s := screen.Snapshot{Active: true, Rows: 3, Cols: 3, Cells: []rune("abÉ 界cd"), X: 2}
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r.Update(s)
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for _, trial := range []struct {
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id command.ID
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text string
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x, y int
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crossing bool
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}{
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{command.NextChar, "space", 0, 1, true},
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{command.PreviousChar, "É", 2, 0, true},
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{command.NextChar, "space", 0, 1, true},
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{command.NextChar, "space", 1, 1, false},
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{command.NextChar, "space", 2, 1, false},
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{command.NextChar, "界", 0, 2, true},
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} {
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result := r.Execute(trial.id)
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if got := result.Text; got != trial.text || r.x != trial.x || r.y != trial.y || result.Cue != "" {
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t.Fatalf("%s: %q at %d,%d", trial.id, got, r.x, r.y)
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}
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if result.Character == nil {
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t.Fatal("lost character metadata")
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}
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if (result.After.Text == "line break") != (feedback && trial.crossing) || (result.After.Cue == presentation.LineEnd) != (feedback && trial.crossing) {
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t.Fatal(result.After.Text, result.After.Cue)
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}
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}
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r.Execute(command.ScreenLastChar)
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result := r.Execute(command.NextChar)
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text := result.Text
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if feedback && (text != "end of screen" || result.Cue != presentation.Bottom) || !feedback && (text != "" || result.Cue != "") {
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t.Fatal(text, result.Cue)
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}
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if r.x != 2 || r.y != 2 || result.After.Text != "" {
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t.Fatal("screen edge moved cursor or retained line break")
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}
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r.Execute(command.Top)
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text = r.Execute(command.PreviousChar).Text
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if feedback && text != "start of screen" || !feedback && text != "" {
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t.Fatal(text)
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}
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}
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}
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func TestWordSelectionFromInsideAndBetweenWords(t *testing.T) {
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for _, trial := range []struct {
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x, y int
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id command.ID
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text string
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targetX, targetY int
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crossing bool
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}{
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{4, 0, command.CurrentWord, "alpha", 2, 0, false},
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{4, 0, command.PreviousWord, "start of screen", 4, 0, false},
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{9, 0, command.PreviousWord, "alpha", 2, 0, false},
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{8, 0, command.CurrentWord, "alpha", 2, 0, false},
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{8, 0, command.NextWord, "beta!", 9, 0, false},
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{0, 1, command.CurrentWord, "beta!", 9, 0, true},
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{0, 1, command.PreviousWord, "alpha", 2, 0, true},
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{9, 0, command.NextWord, "界é", 1, 2, true},
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{1, 2, command.PreviousWord, "beta!", 9, 0, true},
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{0, 0, command.CurrentWord, "start of screen", 0, 0, false},
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{8, 2, command.NextWord, "end of screen", 8, 2, false},
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} {
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var r Review
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s := fixture(" alpha beta!", "", " 界é last")
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s.X, s.Y = trial.x, trial.y
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r.Update(s)
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result := r.Execute(trial.id)
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got := result.Text
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if got != trial.text || r.x != trial.targetX || r.y != trial.targetY || (result.After.Text == "line break") != trial.crossing {
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t.Fatalf("%+v: %q at %d,%d after=%q", trial, got, r.x, r.y, result.After.Text)
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}
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if s.X != r.screen.X || s.Y != r.screen.Y {
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t.Fatal("moved application cursor")
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}
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}
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var r Review
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r.Update(fixture("", ""))
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for _, id := range []command.ID{command.CurrentWord, command.PreviousWord, command.NextWord} {
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result := r.Execute(id)
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if got := result.Text; got != "blank" || result.Cue != presentation.Blank {
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t.Fatal(id, got, result.Cue)
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}
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}
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}
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func TestReviewLineEndpointsAndTopBottom(t *testing.T) {
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var r Review
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s := fixture(" Éx!", "\t\u2003", "last")
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s.X = 3
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r.Update(s)
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for _, trial := range []struct {
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id command.ID
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text, after string
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x, y int
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}{
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{command.FirstText, "É", "first character in line indent 2", 2, 0},
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{command.LastText, "bang", "last character in line", 4, 0},
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{command.NextLine, "\t\u2003", "", 4, 1},
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{command.FirstText, "line is empty", "", 4, 1},
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{command.LastText, "line is empty", "", 4, 1},
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{command.LineStart, "blank", "beginning of line", 0, 1},
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{command.LineEnd, "space", "end of line", 19, 1},
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{command.CurrentLine, "\t\u2003", "", 0, 1},
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{command.Bottom, "Bottom", "", 0, 2},
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{command.NextChar, "a", "", 1, 2},
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{command.Top, "Top", "", 0, 0},
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} {
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// Whitespace-only row content is presented as blank, including Unicode.
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want := trial.text
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if trial.id == command.NextLine || trial.id == command.CurrentLine {
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want = "blank"
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}
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result := r.Execute(trial.id)
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if got := result.Text; got != want || result.After.Text != trial.after || r.x != trial.x || r.y != trial.y {
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t.Fatalf("%s: %q after=%q at %d,%d", trial.id, got, result.After.Text, r.x, r.y)
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}
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}
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}
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func TestTableBoundaryContextAndModeSynchronization(t *testing.T) {
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var r Review
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r.Update(fixture("Name|Subject|Empty", "José|É!|"))
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r.Set_table_mode(true)
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r.Execute(command.CurrentWord)
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r.Set_mark()
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r.Execute(command.NextLine)
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for _, trial := range []struct {
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id command.ID
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text, after string
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cue presentation.Cue
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}{
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{command.NextWord, "É! Subject", "", ""},
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{command.PreviousChar, "É", "start of cell", presentation.LineStart},
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{command.NextChar, "bang", "", ""},
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{command.NextChar, "bang", "end of cell", presentation.LineEnd},
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{command.NextWord, "blank Empty", "", ""},
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{command.NextChar, "blank", "end of cell", presentation.LineEnd},
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{command.NextWord, "blank Empty", "end of line", presentation.LineEnd},
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{command.LineStart, "José Name", "first cell", ""},
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{command.PreviousWord, "José Name", "start of line", presentation.LineStart},
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{command.LineEnd, "blank Empty", "last cell", ""},
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} {
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result := r.Execute(trial.id)
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if got := result.Text; got != trial.text || result.After.Text != trial.after || result.After.Cue != trial.cue {
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t.Fatalf("%s: %q after=%q cue=%q", trial.id, got, result.After.Text, result.After.Cue)
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}
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}
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r.Execute(command.Top)
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if got := r.Execute(command.CurrentWord).Text; got != "Name Name" {
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t.Fatal("Top kept old table column", got)
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}
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r.Execute(command.LineEnd)
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r.Execute(command.Bottom)
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if got := r.Execute(command.CurrentWord).Text; got != "José Name" {
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t.Fatal("Bottom kept old table column", got)
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}
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r.Execute(command.FollowCursor)
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r.Set_table_mode(false)
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r.Execute(command.LineEnd)
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r.Set_table_mode(true)
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if got := r.Execute(command.CurrentWord).Text; got != "Empty Column 3" {
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t.Fatal("mode change did not resynchronize", got)
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}
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}
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func TestReviewScreenChangePolicyAndClamping(t *testing.T) {
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for _, leave := range []bool{false, true} {
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var r Review
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r.Configure(true, true, leave)
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s := fixture("header|value", "data|cell")
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r.Update(s)
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r.Set_table_mode(true)
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r.Execute(command.CurrentWord)
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r.Set_mark()
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r.Execute(command.Bottom)
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r.Execute(command.LineEnd)
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s.Terminal++
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s.Generation++
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r.Update(s)
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if r.Active() == leave || len(r.tableHeaders) != 0 {
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t.Fatal("wrong review/header ownership", r.Active())
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}
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if leave && (r.x != 0 || r.y != 0) || !leave && (r.x != 5 || r.y != 1) {
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t.Fatal(r.x, r.y)
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}
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// A resized screen keeps the anchor only when explicitly requested,
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// and bounds it before any action can index cells.
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r.Execute(command.ScreenLastChar)
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r.Update(fixture("x"))
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r.Execute(command.CurrentChar)
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r.Update(screen.Snapshot{})
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if r.Active() {
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t.Fatal("inactive session retained review")
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}
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}
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}
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