ci: enforce bounded build lanes

2026-07-21 20:15:09 +08:00
parent 99f67adb69
commit f1202d0dd8
16 changed files with 769 additions and 191 deletions
@@ -0,0 +1,43 @@
+import { readdirSync } from 'node:fs'
+import { resolve } from 'node:path'
+import { describe, expect, it } from 'vitest'
+import { coverageArgs, coverageShards } from './coverage-shards.ts'
+
+const repositoryRoot = resolve(import.meta.dirname, '..')
+
+describe('coverage shards', () => {
+  it('assigns every workspace package to exactly one lane', () => {
+    const packagesRoot = resolve(repositoryRoot, 'packages')
+    const workspacePackages = readdirSync(packagesRoot, { withFileTypes: true })
+      .filter(group => group.isDirectory())
+      .flatMap(group => readdirSync(resolve(packagesRoot, group.name), { withFileTypes: true })
+        .filter(entry => entry.isDirectory())
+        .map(entry => `${group.name}/${entry.name}`))
+      .sort()
+    const assignedPackages = coverageShards.flatMap(shard => shard.packageRoots.flatMap((packageRoot) => {
+      if (packageRoot.includes('/')) return [packageRoot]
+      return readdirSync(resolve(packagesRoot, packageRoot), { withFileTypes: true })
+        .filter(entry => entry.isDirectory())
+        .map(entry => `${packageRoot}/${entry.name}`)
+    }))
+
+    expect([...assignedPackages].sort()).toEqual(workspacePackages)
+    expect(new Set(assignedPackages).size).toBe(assignedPackages.length)
+  })
+
+  it.each(coverageShards)('selects tests and source includes for $name', (shard) => {
+    const args = coverageArgs(shard.name)
+    for (const packageRoot of shard.packageRoots) {
+      expect(args).toContain(`packages/${packageRoot}`)
+      expect(args).toContain(packageRoot.includes('/')
+        ? `--coverage.include=packages/${packageRoot}/src/**/*.ts`
+        : `--coverage.include=packages/${packageRoot}/*/src/**/*.ts`)
+    }
+    expect(args).toContain('scripts/test-invariants.spec.ts')
+    expect(new Set(args).size).toBe(args.length)
+  })
+
+  it('rejects an unknown lane', () => {
+    expect(() => coverageArgs('missing')).toThrow('unknown DSH_COVERAGE_SHARD')
+  })
+})