build-cran-binaries/local/tests/test-r-minor-helpers.R
pat-s e23bd3e539
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perf: seed pure-R binaries into a new slot, interleave shards, and stop builds before the timeout (#242)
Speeds up the full rebuild for a new slot, e.g. the upcoming Alpine version.

## Changes

- **Seed pure-R binaries** (`local/seed-pure-r.R`, `local/seed-helpers.R`), opt-in via the new `SEED_FROM` variable on `build-all-versions-install-deps`.
  About 74% of the ~84k candidate versions have no compiled code and cost ~20s each to build; their R objects are identical across slots.
  Before the build list is computed, each donor candidate is downloaded and verified, then copied server-side:
  - donor must be the same OS family and arch;
  - DESCRIPTION has `Built` (not a CRAN source fallback) with an empty platform and no `libs/`;
  - built by the target's primary R minor;
  - bincraft's `tarball_abi_verdict()` calls it portable across every installed minor (unknown means no seed).

  Each copy gets the `single_builds` and `abi_flat_safety` rows an upload writes, so build-all skips it and the per-minor indexes keep it.
  Re-runs skip existing objects and rewrite rows idempotently.
- **Interleaved shards** in `local/build-all.R` via `shard_slice()`; contiguous alphabetical quarters ranged from 0.1h to 28h.
- **Shared build deadline**: `build-all-versions` sets `BUILD_DEADLINE` from `BUILD_BUDGET_HOURS` (44h, repo timeout 50h); `build-all.R` and `build-newer-r.R` stop cleanly when it passes, so archiving still runs.
- `codename_platform()` replaces the hard-coded codename-to-platform list.

## Testing

- New unit tests for the seed verdict, candidate filter, platform names and deadline; all `local/tests` pass.
- Verdicts checked on real amd64/alpine324 tarballs: R6 2.6.1/2.5.1 and jsonstat seeded, cli refused as compiled.
- `crow lint .crow/` passes.
- The seed has not run against B2/Postgres yet; the first bootstrap run is its end-to-end test.

## Usage

Trigger `build-all-versions` with `target_arch`, `OS`, `OS_VERSION` and `SEED_FROM="alpine324 alpine323"`.
The new Alpine version still needs adding to the `OS_VERSION` options once its image exists.

Reviewed-on: #242
2026-10-24 02:04:06 +00:00

45 lines
1.6 KiB
R

source(file.path("..", "r-minor-helpers.R"))
test_that("pure-r (NeedsCompilation != yes) is not sensitive", {
expect_identical(classify_from_metadata("no", NA, c("Rcpp")), "not-sensitive")
expect_identical(
classify_from_metadata("", "Rcpp", c("Rcpp")),
"not-sensitive"
)
})
test_that("LinkingTo a risky dep is sensitive (version constraints stripped)", {
expect_identical(
classify_from_metadata("yes", "Rcpp (>= 1.0)", c("Rcpp")),
"sensitive"
)
expect_identical(
classify_from_metadata("yes", "R6,\n cpp11", c("Rcpp", "cpp11")),
"sensitive"
)
})
test_that("compiled but no risky LinkingTo is ambiguous (needs source)", {
expect_identical(
classify_from_metadata("yes", "R6", c("Rcpp", "cpp11")),
"ambiguous"
)
expect_identical(classify_from_metadata("yes", NA, c("Rcpp")), "ambiguous")
})
test_that("codename_platform names the single_builds platform", {
expect_identical(codename_platform("alpine325"), "alpine-325")
expect_identical(codename_platform("rhel9"), "redhat-9")
expect_identical(codename_platform("noble"), "ubuntu-2404")
expect_identical(codename_platform("resolute"), "ubuntu-2604")
expect_identical(codename_platform("bogus"), NA_character_)
})
test_that("build_deadline reads BUILD_DEADLINE and defaults to none", {
expect_identical(build_deadline(""), Inf)
expect_identical(build_deadline("not a number"), Inf)
expect_identical(build_deadline("1700000000"), 1700000000)
expect_false(deadline_reached(Inf))
expect_true(deadline_reached(100, now = 100))
expect_false(deadline_reached(100, now = 99))
})