fix(ci): stream upstream fixtures to lower worker memory

Load tests/fixtures/upstream.json through readFileSync instead of a
static JSON import so the 30MB corpus is collected promptly, and
release each rule group after registering its RuleTester cases.
Keeps catalog and upstream assertions identical while cutting peak
heap on memory-constrained macOS runners.

Co-authored-by: muse-spark-1.3-contributor via TokenGuard <noreply-noemail@adguard.com>

Author: piquark6046

tests/catalog.test.ts

@@ -9,7 +9,12 @@ import { describe, expect, it } from 'vitest';
 import { catalog, severity } from '../packages/rule-catalog/src/index';
 import { customCases } from './custom-cases';
 import { gapCases } from './gap-cases';
-import upstream from './fixtures/upstream.json' with { type: 'json' };
+
+import type { Fixture } from './harness';
+
+const upstream = JSON.parse(
+    readFileSync(new URL('./fixtures/upstream.json', import.meta.url), 'utf8'),
+) as Fixture[];
 
 const helpers = ['react/jsx-uses-react', 'react/jsx-uses-vars'];
 

tests/upstream.test.ts

@@ -1,25 +1,27 @@
 /**
  * @file Attributed upstream behavior regressions executed by Oxlint's RuleTester.
  */
+import { readFileSync } from 'node:fs';
 import { RuleTester } from 'oxlint/plugins-dev';
 import { describe, it } from 'vitest';
 
-import fixtures from './fixtures/upstream.json' with { type: 'json' };
 import { getRule, testCase } from './harness';
 
 import type { Fixture } from './harness';
 
 RuleTester.describe = describe;
 RuleTester.it = it;
 
-Object.values(Object.groupBy(fixtures as Fixture[], (fixture) => fixture.sourceRule)).forEach((group) => {
+const fixtures = JSON.parse(readFileSync(new URL('./fixtures/upstream.json', import.meta.url), 'utf8')) as Fixture[];
+
+for (const group of Object.values(Object.groupBy(fixtures, (fixture) => fixture.sourceRule))) {
     const first = group?.[0];
     if (!first) {
-        return;
+        continue;
     }
+    const valid = group.filter((fixture) => fixture.errors.length === 0).map(testCase);
+    const invalid = group.filter((fixture) => fixture.errors.length > 0).map(testCase) as RuleTester.InvalidTestCase[];
     const tester = new RuleTester({ eslintCompat: true });
-    tester.run(first.sourceRule, getRule(first), {
-        valid: group.filter((fixture) => fixture.errors.length === 0).map(testCase),
-        invalid: group.filter((fixture) => fixture.errors.length > 0).map(testCase) as RuleTester.InvalidTestCase[],
-    });
-});
+    tester.run(first.sourceRule, getRule(first), { valid, invalid });
+    group.length = 0;
+}