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NetMesh/components/terminal/pluginTerminalBufferText.test.ts

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import assert from 'node:assert/strict';
import test from 'node:test';
import {
pluginTerminalCellRange,
readPluginTerminalBufferText,
} from './pluginTerminalBufferText.ts';
test('plugin terminal buffer text maps wide and combining characters to xterm cells', () => {
const cells = [
{ chars: 'A', width: 1 },
{ chars: '界', width: 2 },
{ chars: '', width: 0 },
{ chars: 'e\u0301', width: 1 },
{ chars: '', width: 1 },
];
const line = {
length: cells.length,
getCell(index: number) {
const cell = cells[index];
return cell ? { getChars: () => cell.chars, getWidth: () => cell.width } : undefined;
},
translateToString() { return 'A界e\u0301 '; },
};
const result = readPluginTerminalBufferText(line as never, true);
assert.equal(result.text, 'A界e\u0301');
assert.deepEqual(pluginTerminalCellRange(result, 1, 1), { x: 1, width: 2 });
assert.deepEqual(pluginTerminalCellRange(result, 2, 2), { x: 3, width: 1 });
assert.equal(pluginTerminalCellRange(result, 2, 1), null);
});