xterm.dart/test/src/ui/controller_test.dart

import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:xterm/xterm.dart';

void main() {
  group('TerminalController', () {
    testWidgets('setSelectionRange works', (tester) async {
      final terminal = Terminal();
      final terminalView = TerminalController();

      await tester.pumpWidget(MaterialApp(
        home: Scaffold(
          body: TerminalView(
            terminal,
            controller: terminalView,
          ),
        ),
      ));

      terminalView.setSelectionRange(CellOffset(0, 0), CellOffset(2, 2));

      await tester.pump();

      expect(terminalView.selection, isNotNull);
    });

    testWidgets('setSelectionMode changes BufferRange type', (tester) async {
      final terminal = Terminal();
      final terminalView = TerminalController();

      await tester.pumpWidget(MaterialApp(
        home: Scaffold(
          body: TerminalView(
            terminal,
            controller: terminalView,
          ),
        ),
      ));

      terminalView.setSelectionRange(CellOffset(0, 0), CellOffset(2, 2));

      expect(terminalView.selection, isA<BufferRangeLine>());

      terminalView.setSelectionMode(SelectionMode.block);

      expect(terminalView.selection, isA<BufferRangeBlock>());
    });

    testWidgets('clearSelection works', (tester) async {
      final terminal = Terminal();
      final terminalView = TerminalController();

      await tester.pumpWidget(MaterialApp(
        home: Scaffold(
          body: TerminalView(
            terminal,
            controller: terminalView,
          ),
        ),
      ));

      terminalView.setSelectionRange(CellOffset(0, 0), CellOffset(2, 2));

      expect(terminalView.selection, isNotNull);

      terminalView.clearSelection();

      expect(terminalView.selection, isNull);
    });
  });
}