feat(nuldoc): add small test to xml.ts

1 files changed, 5 insertions, 2 deletions

diff --git a/nuldoc-src/xml.ts b/nuldoc-src/xml.ts
index 13ec5d6..87c2b71 100644
--- a/nuldoc-src/xml.ts
+++ b/nuldoc-src/xml.ts
@@ -2,7 +2,10 @@ import { Element, Node, Text } from "./dom.ts";
 import { XmlParseError } from "./errors.ts";
 
 export async function parseXmlFile(filePath: string): Promise<Element> {
-  const source = await Deno.readTextFile(filePath);
+  return parseXmlString(await Deno.readTextFile(filePath));
+}
+
+export function parseXmlString(source: string): Element {
   return parse({ source: source, index: 0 });
 }
 
@@ -200,7 +203,7 @@ function expect(p: Parser, expected: string) {
   }
   if (actual !== expected) {
     throw new XmlParseError(
-      `[parse.expect] expected ${expected}, but actually got ${actual}`,
+      `[parse.expect] expected ${expected}, but actually got ${actual} (pos: ${p.index})`,
     );
   }
 }