tricu

import-folds.test.mjs (2079B)

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 import test from 'node:test';import assert from 'node:assert/strict';
 import {EditorState,EditorSelection,EditorView} from '../dist/codemirror.js';
 import {importSites,selectedImportLines,importFolds} from '../dist/import-folds.js';
 const hash='0123456789abcdef'.repeat(4),other='abcdef0123456789'.repeat(4);
 test('import projection recognizes only real, complete, line-head import hashes',()=>{
  const source=`-- !import ${hash}\ntext = "!import ${hash}"\n|- !import ${hash} -|\nx = !import ${hash}\n!import ${hash.slice(1)} as short\n!import ${hash.toUpperCase()} as upper\n!import ${hash}x as extra\n!import ${hash} as A\n  !import\t${other} as B`;
  const sites=importSites(EditorState.create({doc:source}));
  assert.equal(sites.length,2);assert.deepEqual(sites.map(site=>site.hash),[hash,other]);
  for(const site of sites)assert.equal(source.slice(site.from,site.to),site.hash);
 });
 test('selection exposes only cursor head lines',()=>{
  const doc=`-- λ🙂\n!import ${hash} as A\n!import ${other} as B\nanswer = 42`;
  let state=EditorState.create({doc});
  assert.deepEqual([...selectedImportLines(state)],[1]);
  state=state.update({selection:EditorSelection.single(doc.indexOf(' as A')+4)}).state;
  assert.deepEqual([...selectedImportLines(state)],[2]);
  state=state.update({selection:EditorSelection.single(state.doc.line(2).from,state.doc.line(4).from)}).state;
  assert.deepEqual([...selectedImportLines(state)],[4]);
 });
 test('projection transactions preserve canonical source and character-level ranges',()=>{
  const doc=`!import ${hash} as A\n!import ${other} as B\nanswer = 42`;
  let state=EditorState.create({doc,extensions:[importFolds]});
  assert.equal(state.field(importFolds).size,2);
  state=state.update({selection:EditorSelection.single(state.doc.line(3).from)}).state;
  assert.equal(state.doc.toString(),doc);assert.deepEqual(state.facet(EditorView.atomicRanges),[]);
  state=state.update({changes:{from:0,insert:`!import ${hash} as C\n`}}).state;
  assert.equal(importSites(state).length,3);assert.equal(state.doc.toString(),`!import ${hash} as C\n`+doc);
 });