From df4e1992c04acc62081ad2561c9e3bc375e8e6d8 Mon Sep 17 00:00:00 2001
From: Kasper Svendsen <kaspersv@github.com>
Date: Tue, 28 Oct 2025 13:12:30 +0100
Subject: [PATCH] Add unit test for diffRangeExtensionPackContents

---
 src/analyze.test.ts            | 17 +++++++++++++++++
 src/testdata/pr-diff-range.yml |  8 ++++++++
 2 files changed, 25 insertions(+)
 create mode 100644 src/testdata/pr-diff-range.yml

diff --git a/src/analyze.test.ts b/src/analyze.test.ts
index ceabf62ba..33278271a 100644
--- a/src/analyze.test.ts
+++ b/src/analyze.test.ts
@@ -10,6 +10,7 @@ import {
   defaultSuites,
   resolveQuerySuiteAlias,
   addSarifExtension,
+  diffRangeExtensionPackContents,
 } from "./analyze";
 import { createStubCodeQL } from "./codeql";
 import { Feature } from "./feature-flags";
@@ -158,3 +159,19 @@ test("addSarifExtension", (t) => {
     );
   }
 });
+
+test("diffRangeExtensionPackContents", (t) => {
+  const output = diffRangeExtensionPackContents([
+    {
+      path: "/checkout/path/main.js",
+      startLine: 10,
+      endLine: 20,
+    },
+  ]);
+
+  const expected = fs.readFileSync(
+    `${__dirname}/../src/testdata/pr-diff-range.yml`,
+    "utf8",
+  );
+  t.deepEqual(output, expected);
+});
diff --git a/src/testdata/pr-diff-range.yml b/src/testdata/pr-diff-range.yml
new file mode 100644
index 000000000..073b83198
--- /dev/null
+++ b/src/testdata/pr-diff-range.yml
@@ -0,0 +1,8 @@
+
+extensions:
+  - addsTo:
+      pack: codeql/util
+      extensible: restrictAlertsTo
+      checkPresence: false
+    data:
+      - ['/checkout/path/main.js', 10, 20]