diff --git a/packages/sdk/helper/tests/documents.spec.ts b/packages/sdk/helper/tests/documents.spec.ts
index f5d3e13244..1ba8b9bd68 100644
--- a/packages/sdk/helper/tests/documents.spec.ts
+++ b/packages/sdk/helper/tests/documents.spec.ts
@@ -196,12 +196,16 @@ config:
   it('creates and parses pnpm workspace policy', () => {
     const document = PnpmWorkspaceFile.create()
     document.addPackage('plugins/*')
+    document.addPackage('plugins/*')
     document.disableAutoInstallPeers()
     document.validate()
     expect(document.serialize()).toContain('autoInstallPeers: false')
     const parsed = PnpmWorkspaceFile.parse(document.serialize())
     expect(parsed.clone().serialize()).toBe(document.serialize())
+    expect(() => PnpmWorkspaceFile.parse('packages: [')).toThrow('invalid pnpm-workspace.yaml')
     expect(() => PnpmWorkspaceFile.parse('packages: nope')).toThrow('packages must be an array')
+    expect(() => PnpmWorkspaceFile.parse('packages: [{}]')).toThrow('packages must be an array')
+    expect(() => PnpmWorkspaceFile.parse('packages: [1]')).toThrow('packages must be an array')
     expect(() => PnpmWorkspaceFile.parse('[]')).toThrow('root must be an object')
     expect(() => PnpmWorkspaceFile.parse('packages: []\nautoInstallPeers: nope')).toThrow('must be boolean')
     const invalid = PnpmWorkspaceFile.create()
diff --git a/packages/sdk/helper/tests/project.spec.ts b/packages/sdk/helper/tests/project.spec.ts
index 100d81d7b2..d55bb16be9 100644
--- a/packages/sdk/helper/tests/project.spec.ts
+++ b/packages/sdk/helper/tests/project.spec.ts
@@ -419,9 +419,11 @@ describe('SdkProject and ProjectEditSession', () => {
     const edit = project.edit(registry)
     type Internals = {
       documents: Map<string, TextProjectFile>
+      states: Map<ReturnType<typeof featureId>, unknown>
       applyResource(resource: ProjectResource, previous: ProjectResource | undefined): void
       removeResource(resource: ProjectResource): void
       replaceContribution(previous: ProjectContribution | undefined, next: ProjectContribution): void
+      finalProfile(): ProjectProfile
       manifest(): unknown
       cordis(): unknown
       environment(path: '.env' | '.env.example'): unknown
@@ -508,6 +510,8 @@ describe('SdkProject and ProjectEditSession', () => {
       override readonly options = []
     }
     expect(() => { internals.state(new Foreign()) }).toThrow('not applicable')
+    internals.states.delete(featureId('app'))
+    expect(internals.finalProfile()).toBe(project.profile)
     const sourceDocuments = (project as unknown as { documents: Map<string, TextProjectFile> }).documents
     sourceDocuments.set('.env', new TextProjectFile('.env', 'bad'))
     expect(() => project.readEnvironment('.env', 'KEY')).toThrow('not an environment document')
diff --git a/packages/sdk/scripts/tests/scripts.spec.ts b/packages/sdk/scripts/tests/scripts.spec.ts
index 03e38b5c26..8d110799ea 100644
--- a/packages/sdk/scripts/tests/scripts.spec.ts
+++ b/packages/sdk/scripts/tests/scripts.spec.ts
@@ -289,6 +289,10 @@ describe('build profiles and invocation', () => {
     let called = false
     await runProjectBuild([], root, { run: async () => { called = true; return { exitCode: 0, signal: null } } })
     expect(called).toBe(false)
+    const unreadableManifest = await mkdtemp(join(tmpdir(), 'dsh-build-unreadable-manifest-'))
+    temporary.push(unreadableManifest)
+    await mkdir(join(unreadableManifest, 'package.json'))
+    await expect(runProjectBuild([], unreadableManifest)).rejects.toThrow()
     await expect(runSDK('index.js', { cwd: root })).rejects.toThrow('Run dsh-sdk build first')
   })