---
id: "bug-410"
status: "fixed"
status_updated: "2026-09-24"
status_note: ""
component: "controller"
severity: "unknown"
timestamp: "2026-06-11T13:30:00Z"
last_seen: "2026-09-19T09:00:00Z"
occurrences: 1
files: ["src/controller/testsuite/test_commit_engine.c"]
tags: ["controller", "testsuite", "repl", "return-convention"]
related: []
legacy: true
---

# bug-410: test_commit_engine fixture: Expected 0 Was 1 from repl_add_standby

## Description
test_commit_engine fixture: Expected 0 Was 1 from repl_add_standby

## Environment
_Not recorded (migrated from buglog.json)._

## Reproduction
_Not recorded (migrated from buglog.json)._

## Root cause
repl_add_standby returns the slot index (>=0) on success, not 0 — second add legitimately returns 1

## Fix
fixture asserts TEST_ASSERT_EQUAL_INT(i, repl_add_standby(...)) per standby slot

## Verification
_Not recorded (migrated from buglog.json)._

## References
_Not recorded (migrated from buglog.json)._