diff --git a/packages/opencode/test/session/compaction.test.ts b/packages/opencode/test/session/compaction.test.ts
index 015a1653a3..ef5fb5db03 100644
--- a/packages/opencode/test/session/compaction.test.ts
+++ b/packages/opencode/test/session/compaction.test.ts
@@ -564,65 +564,13 @@ describe("session.compaction.create", () => {
 describe("session.compaction.prune", () => {
   it.live(
     "compacts old completed tool output",
-    provideTmpdirInstance((dir) =>
-      Effect.gen(function* () {
-        const compact = yield* SessionCompaction.Service
-        const ssn = yield* SessionNs.Service
-        const info = yield* ssn.create({})
-        const a = yield* ssn.updateMessage({
-          id: MessageID.ascending(),
-          role: "user",
-          sessionID: info.id,
-          agent: "build",
-          model: ref,
-          time: { created: Date.now() },
-        })
-        yield* ssn.updatePart({
-          id: PartID.ascending(),
-          messageID: a.id,
-          sessionID: info.id,
-          type: "text",
-          text: "first",
-        })
-        const b: MessageV2.Assistant = {
-          id: MessageID.ascending(),
-          role: "assistant",
-          sessionID: info.id,
-          mode: "build",
-          agent: "build",
-          path: { cwd: dir, root: dir },
-          cost: 0,
-          tokens: {
-            output: 0,
-            input: 0,
-            reasoning: 0,
-            cache: { read: 0, write: 0 },
-          },
-          modelID: ref.modelID,
-          providerID: ref.providerID,
-          parentID: a.id,
-          time: { created: Date.now() },
-          finish: "end_turn",
-        }
-        yield* ssn.updateMessage(b)
-        yield* ssn.updatePart({
-          id: PartID.ascending(),
-          messageID: b.id,
-          sessionID: info.id,
-          type: "tool",
-          callID: crypto.randomUUID(),
-          tool: "bash",
-          state: {
-            status: "completed",
-            input: {},
-            output: "x".repeat(200_000),
-            title: "done",
-            metadata: {},
-            time: { start: Date.now(), end: Date.now() },
-          },
-        })
-        for (const text of ["second", "third"]) {
-          const msg = yield* ssn.updateMessage({
+    provideTmpdirInstance(
+      (dir) =>
+        Effect.gen(function* () {
+          const compact = yield* SessionCompaction.Service
+          const ssn = yield* SessionNs.Service
+          const info = yield* ssn.create({})
+          const a = yield* ssn.updateMessage({
             id: MessageID.ascending(),
             role: "user",
             sessionID: info.id,
@@ -632,23 +580,82 @@ describe("session.compaction.prune", () => {
           })
           yield* ssn.updatePart({
             id: PartID.ascending(),
-            messageID: msg.id,
+            messageID: a.id,
             sessionID: info.id,
             type: "text",
-            text,
+            text: "first",
           })
-        }
+          const b: MessageV2.Assistant = {
+            id: MessageID.ascending(),
+            role: "assistant",
+            sessionID: info.id,
+            mode: "build",
+            agent: "build",
+            path: { cwd: dir, root: dir },
+            cost: 0,
+            tokens: {
+              output: 0,
+              input: 0,
+              reasoning: 0,
+              cache: { read: 0, write: 0 },
+            },
+            modelID: ref.modelID,
+            providerID: ref.providerID,
+            parentID: a.id,
+            time: { created: Date.now() },
+            finish: "end_turn",
+          }
+          yield* ssn.updateMessage(b)
+          yield* ssn.updatePart({
+            id: PartID.ascending(),
+            messageID: b.id,
+            sessionID: info.id,
+            type: "tool",
+            callID: crypto.randomUUID(),
+            tool: "bash",
+            state: {
+              status: "completed",
+              input: {},
+              output: "x".repeat(200_000),
+              title: "done",
+              metadata: {},
+              time: { start: Date.now(), end: Date.now() },
+            },
+          })
+          for (const text of ["second", "third"]) {
+            const msg = yield* ssn.updateMessage({
+              id: MessageID.ascending(),
+              role: "user",
+              sessionID: info.id,
+              agent: "build",
+              model: ref,
+              time: { created: Date.now() },
+            })
+            yield* ssn.updatePart({
+              id: PartID.ascending(),
+              messageID: msg.id,
+              sessionID: info.id,
+              type: "text",
+              text,
+            })
+          }
 
-        yield* compact.prune({ sessionID: info.id })
+          yield* compact.prune({ sessionID: info.id })
 
-        const msgs = yield* ssn.messages({ sessionID: info.id })
-        const part = msgs.flatMap((msg) => msg.parts).find((part) => part.type === "tool")
-        expect(part?.type).toBe("tool")
-        expect(part?.state.status).toBe("completed")
-        if (part?.type === "tool" && part.state.status === "completed") {
-          expect(part.state.time.compacted).toBeNumber()
-        }
-      }),
+          const msgs = yield* ssn.messages({ sessionID: info.id })
+          const part = msgs.flatMap((msg) => msg.parts).find((part) => part.type === "tool")
+          expect(part?.type).toBe("tool")
+          expect(part?.state.status).toBe("completed")
+          if (part?.type === "tool" && part.state.status === "completed") {
+            expect(part.state.time.compacted).toBeNumber()
+          }
+        }),
+
+      {
+        config: {
+          compaction: { prune: true },
+        },
+      },
     ),
   )