Lnd Emulator Utility Jun 2026

Ensure your scripts wipe the local data directories before running a new test suite. Residual state from a previous test can cause unexpected routing failures or database conflicts.

What specific or framework (e.g., Go, TypeScript, Python) is your application using?

The utility launches two or more LND instances configured to communicate with the local Bitcoin Regtest node. lnd emulator utility

Add artificial delay to mimic real network conditions:

Running full integration tests with real Bitcoin nodes in a GitHub Action or GitLab CI environment is notoriously slow and brittle. The LND emulator utility shines in automation. Ensure your scripts wipe the local data directories

The LND Emulator Utility offers several key features that make it an essential tool for Lightning Network development:

The utility provides a comprehensive suite of simulated behaviors to ensure your application cannot tell the difference between the mock environment and a live node. The utility launches two or more LND instances

Last updated: 2026-04-11 Based on LND API v0.17.x and common open-source emulator patterns.

lnd-emulator --fail-method="SendPaymentSync" --error-code="13" # Internal error

func TestPayment(t *testing.T) // Create mock node mockNode := mock.NewMockServer() defer mockNode.Stop()