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

3 files changed, 28 insertions, 3 deletions

diff --git a/deno.lock b/deno.lock
index 0236261..7b9cfa1 100644
--- a/deno.lock
+++ b/deno.lock
@@ -65,10 +65,15 @@
     "https://deno.land/std@0.170.0/path/posix.ts": "b859684bc4d80edfd4cad0a82371b50c716330bed51143d6dcdbe59e6278b30c",
     "https://deno.land/std@0.170.0/path/separator.ts": "fe1816cb765a8068afb3e8f13ad272351c85cbc739af56dacfc7d93d710fe0f9",
     "https://deno.land/std@0.170.0/path/win32.ts": "7cebd2bda6657371adc00061a1d23fdd87bcdf64b4843bb148b0b24c11b40f69",
+    "https://deno.land/std@0.170.0/testing/_diff.ts": "a23e7fc2b4d8daa3e158fa06856bedf5334ce2a2831e8bf9e509717f455adb2c",
+    "https://deno.land/std@0.170.0/testing/_format.ts": "cd11136e1797791045e639e9f0f4640d5b4166148796cad37e6ef75f7d7f3832",
+    "https://deno.land/std@0.170.0/testing/asserts.ts": "51353e79437361d4b02d8e32f3fc83b22231bc8f8d4c841d86fd32b0b0afe940",
     "https://deno.land/std@0.170.0/version.ts": "eb6935c9beaac221b235d011ba5b127ceb5d3addf329cc01e05806af07ba93e1"
   },
   "npm": {
-    "specifiers": { "highlight.js": "highlight.js@11.7.0" },
+    "specifiers": {
+      "highlight.js": "highlight.js@11.7.0"
+    },
     "packages": {
       "highlight.js@11.7.0": {
         "integrity": "sha512-1rRqesRFhMO/PRF+G86evnyJkCgaZFOI+Z6kdj15TA18funfoqJXvgPCLSf0SWq3SRfg1j3HlDs8o4s3EGq1oQ==",
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})`,
     );
   }
 }
diff --git a/nuldoc-src/xml_test.ts b/nuldoc-src/xml_test.ts
new file mode 100644
index 0000000..28e1597
--- /dev/null
+++ b/nuldoc-src/xml_test.ts
@@ -0,0 +1,17 @@
+import { assertEquals } from "std/testing/asserts.ts";
+import { parseXmlString } from "./xml.ts";
+
+Deno.test("Parse XML", () => {
+  assertEquals(
+    "__root__",
+    parseXmlString(
+      `<?xml version="1.0" encoding="UTF-8"?>
+<hoge>
+  <piyo>
+    <!-- comment -->
+  </piyo>
+</hoge>
+`,
+    ).name,
+  );
+});