24 - the conformance gates live in src/conformance/

src/conformance/adf-property.test.ts

@@ -0,0 +1,23 @@
+import assert from 'node:assert/strict'
+import fc from 'fast-check'
+import test from 'node:test'
+
+import { adfDocument, propertyRuns, propertyTimeout } from './property-harness.ts'
+import { adfToMarkdown } from '../markdown/emit/adf-to-markdown.ts'
+import { markdownToAdf } from '../markdown/parse/markdown-to-adf.ts'
+import { toEditorNormal } from '../adf/editor-normal.ts'
+
+const gateRuns = 1600
+
+test('a generated document refuses to emit, or its markdown reads back to it', { timeout: propertyTimeout }, () => {
+  fc.assert(
+    fc.property(adfDocument, (document) => {
+      const emitted = adfToMarkdown(document)
+      if (!emitted.ok) return
+      const read = markdownToAdf(emitted.value)
+      assert.ok(read.ok, read.ok ? '' : `${read.error.code}: ${read.error.message} — reading ${JSON.stringify(emitted.value)}`)
+      assert.deepEqual(toEditorNormal(read.value), document, `reading ${JSON.stringify(emitted.value)}`)
+    }),
+    propertyRuns(gateRuns),
+  )
+})