From 2fc6924dcbc079918e7dffe8ebe3bc42593d41dd Mon Sep 17 00:00:00 2001
From: Mika Kuns <mika.kuns@fb-tuning.de>
Date: Wed, 15 Apr 2026 08:59:51 +0200
Subject: [PATCH] test(installer): add InstallManifest wrong-shape json test

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 .../InstallManifestStoreTests.cs                       | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/tests/ClaudeDo.Installer.Tests/InstallManifestStoreTests.cs b/tests/ClaudeDo.Installer.Tests/InstallManifestStoreTests.cs
index 553773b..ff7565f 100644
--- a/tests/ClaudeDo.Installer.Tests/InstallManifestStoreTests.cs
+++ b/tests/ClaudeDo.Installer.Tests/InstallManifestStoreTests.cs
@@ -63,4 +63,14 @@ public sealed class InstallManifestStoreTests : IDisposable
         var result = InstallManifestStore.TryRead(_tempDir);
         Assert.Null(result);
     }
+
+    [Fact]
+    public void TryRead_ReturnsNull_WhenJsonIsValidButShapeIsWrong()
+    {
+        // Valid JSON, but installedAt has a wrong type — causes JsonException, swallowed silently.
+        File.WriteAllText(Path.Combine(_tempDir, "install.json"),
+            """{"version":"1.0","installDir":"x","workerDir":"y","installedAt":12345}""");
+        var result = InstallManifestStore.TryRead(_tempDir);
+        Assert.Null(result);
+    }
 }