ic-testkit

PocketIC-oriented test utilities for Internet Computer canister tests.

This crate is the published Rust package in the ic-testkit workspace. It provides:

• direct re-exports of PocketIc and PocketIcBuilder
• the complete host-only upstream crate at ic_testkit::pocket_ic
• typed Candid query/update helpers with contextual, structured errors
• canister install and retry helpers
• explicit bounded PocketIC startup, caller-owned managed-server handles, and structured child/readiness failures
• cached single- and multi-canister PocketIC baseline pools
• deterministic fake principals and account-like values
• transactional external artifact sets and content-addressed Wasm builds with caller-labeled sequential batches, explicit immutable-source sessions, and bounded cache retention
• controller-aware, caller-labeled collect-all diagnostics
• compact benchmark marker parsing, aggregation, comparison, and report writing
• canister-side Performance::measure marker emission

ic-testkit does not wrap the PocketIC simulator API, serialize independent instances, or own PocketIC's server-binary cache. Tests normally create one fresh PocketIc each and use its inherent methods for simulator operations; focused extension traits provide reusable harness behavior. Less common upstream types remain available through the complete ic_testkit::pocket_ic re-export instead of an expanding mirrored list.

Most users should read the repository README for setup, examples, local checks, and release notes.

The published archive includes CHANGELOG.md, which contains the 0.9 managed-server lifetime migration and earlier hard-cut tables.

The repository also includes a complete multi-canister baseline recipe and a transactional external-artifact example that are compiled by the crate's normal all-target checks.