[Init] Initial commit - NetMesh terminal manager

components/terminal/pluginTerminalBufferText.test.ts

@@ -0,0 +1,30 @@
+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);
+});