feat(coprocessor): parallelize CI tests per service and reduce operator tests for prs

[PanGan21]

Summary

• Parallelize coprocessor CI tests across 7 service-specific matrix jobs using per-package
• Add dedicated coverage-report job that merges per-service LCOV artifacts with lcov
• Add cargo-tests-status aggregator job to preserve the coprocessor-cargo-test/cargo-tests (bpr) branch protection check name
• Runs the operator tests up to FHEUint64 on pr and everything on merge-queue
• Runs the operator gpu tests only for FHEUint64 on pr and everything on merge-queue
• Make test harness DB setup generic: extract DB name from URL instead of hardcoding "coprocessor", enabling isolated per-service test databases
• Replace manual table truncation in transaction-sender tests with setup_test_db() for consistency
• Removes unused postgres setup in docker from CI

Closes: https://github.com/zama-ai/fhevm-internal/issues/1186

[github-actions]

Changed Lines Coverage

Coverage of added/modified lines: 95.0%

Per-file breakdown

Diff Coverage

Diff: origin/main...HEAD, staged and unstaged changes

• coprocessor/fhevm-engine/test-harness/src/instance.rs (95.2%): Missing lines 85

Summary

• Total: 21 lines
• Missing: 1 line
• Coverage: 95%

coprocessor/fhevm-engine/test-harness/src/instance.rs

  81     let db_url = DatabaseURL::default();
  82 
  83     if with_reset {
  84         info!("Resetting local database at {db_url}");
! 85         let admin_db_url = admin_url_from(db_url.as_str());
  86         create_database(&admin_db_url, db_url.as_str(), mode).await?;
  87     }
  88 
  89     info!("Using existing local database at {db_url}");

---

[antoniupop]

You may need to rename if not using nextest

[Eikix]

LGTM

[Eikix]

lgtm

[PanGan21]

@mergify queue

[mergify]

Merge Queue Status

• ✅ Entered queue — 2026-03-27 12:45 UTC · Rule: main
• ✅ Checks passed · on draft merge queue: embarking main (4ef47dc) and [#2156 + #2164] together #2203
• ✅ Merged — 2026-03-27 14:38 UTC · at 14acc38259998d9c13db3b8ff97f35ddc47cd059

This pull request spent 1 hour 52 minutes 45 seconds in the queue, including 1 hour 14 minutes 55 seconds running CI.

Required conditions to merge

• #approved-reviews-by >= 1 [🛡 GitHub branch protection]
  • chore(common): extend getRequiredEnvVar method to check empty values #2156
  • feat(coprocessor): parallelize CI tests per service and reduce operator tests for prs #2164
• #changes-requested-reviews-by = 0 [🛡 GitHub branch protection]
  • chore(common): extend getRequiredEnvVar method to check empty values #2156
  • feat(coprocessor): parallelize CI tests per service and reduce operator tests for prs #2164
• #review-threads-unresolved = 0 [🛡 GitHub branch protection]
  • chore(common): extend getRequiredEnvVar method to check empty values #2156
  • feat(coprocessor): parallelize CI tests per service and reduce operator tests for prs #2164
• branch-protection-review-decision = APPROVED [🛡 GitHub branch protection]
  • chore(common): extend getRequiredEnvVar method to check empty values #2156
  • feat(coprocessor): parallelize CI tests per service and reduce operator tests for prs #2164
• check-success = run-e2e-tests / fhevm-e2e-test
• any of [🛡 GitHub branch protection]:
  • check-success = common-pull-request/lint (bpr)
  • check-neutral = common-pull-request/lint (bpr)
  • check-skipped = common-pull-request/lint (bpr)
• any of [🛡 GitHub branch protection]:
  • check-success = coprocessor-cargo-test/cargo-tests (bpr)
  • check-neutral = coprocessor-cargo-test/cargo-tests (bpr)
  • check-skipped = coprocessor-cargo-test/cargo-tests (bpr)
• any of [🛡 GitHub branch protection]:
  • check-success = coprocessor-dependency-analysis/dependencies-check (bpr)
  • check-neutral = coprocessor-dependency-analysis/dependencies-check (bpr)
  • check-skipped = coprocessor-dependency-analysis/dependencies-check (bpr)
• any of [🛡 GitHub branch protection]:
  • check-success = gateway-contracts-deployment-tests/sc-deploy (bpr)
  • check-neutral = gateway-contracts-deployment-tests/sc-deploy (bpr)
  • check-skipped = gateway-contracts-deployment-tests/sc-deploy (bpr)
• any of [🛡 GitHub branch protection]:
  • check-skipped = kms-connector-tests/test-connector (bpr)
  • check-neutral = kms-connector-tests/test-connector (bpr)
  • check-success = kms-connector-tests/test-connector (bpr)