From 21ac6ba754296000823869e3f025fbe6225e256f Mon Sep 17 00:00:00 2001
From: Hermes Agent <hermes@localhost>
Date: Wed, 12 Aug 2026 08:26:30 +0000
Subject: Clean partial outputs after manifest write failure

---
 tests/build.rs | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)

(limited to 'tests')

diff --git a/tests/build.rs b/tests/build.rs
index c9cc59f..c31f0c2 100644
--- a/tests/build.rs
+++ b/tests/build.rs
@@ -87,6 +87,25 @@ impl InitramfsBuilder for MutatingInitrdBuilder {
     }
 }
 
+struct ManifestFailingInitramfsBuilder {
+    manifest: std::path::PathBuf,
+}
+
+impl InitramfsBuilder for ManifestFailingInitramfsBuilder {
+    fn build(&mut self, request: &InitramfsRequest) -> anyhow::Result<InitramfsResult> {
+        fs::write(
+            request
+                .rootfs()
+                .join(format!("boot/initrd-{}.img", request.kernel().as_str())),
+            "initrd",
+        )?;
+        let parent = self.manifest.parent().expect("manifest parent");
+        fs::create_dir_all(parent)?;
+        fs::create_dir(&self.manifest)?;
+        InitramfsResult::from_rootfs(request.rootfs(), request.kernel())
+    }
+}
+
 #[derive(Default)]
 struct FixtureInitramfsBuilder;
 
@@ -404,3 +423,38 @@ fn removes_the_new_workspace_and_artifact_when_manifest_collection_fails() {
         "failed manifest collection must not leave a companion manifest"
     );
 }
+
+#[test]
+fn removes_the_partial_artifact_when_manifest_writing_fails() {
+    let fixture = tempdir().expect("fixture directory");
+    let spec = ImageSpec::load(std::path::Path::new("profiles/alt-controller.toml"))
+        .expect("load controller spec");
+    let plan = BuildPlan::compile(spec).expect("compile build plan");
+    let workspace = fixture.path().join("work");
+    let artifact = fixture.path().join("out/image.tar");
+    let manifest = ArtifactManifest::path_beside(&artifact).expect("manifest path");
+    let mut executor = BuildExecutor::new(
+        FixtureInstaller::default(),
+        ManifestFailingInitramfsBuilder {
+            manifest: manifest.clone(),
+        },
+    );
+
+    let error = executor
+        .execute(&plan, &workspace, "profiles/apt.conf", &artifact)
+        .expect_err("manifest write failure must fail the build");
+
+    assert!(error.to_string().contains("create artifact manifest"));
+    assert!(
+        !workspace.exists(),
+        "failed build must not leave a workspace"
+    );
+    assert!(
+        !artifact.exists(),
+        "failed build must not leave an artifact"
+    );
+    assert!(
+        !manifest.exists(),
+        "failed build must remove a manifest path created during execution"
+    );
+}
-- 
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