1 files changed, 28 insertions, 0 deletions
diff --git a/dom/webgpu/tests/cts/checkout/src/common/framework/metadata.ts b/dom/webgpu/tests/cts/checkout/src/common/framework/metadata.ts
new file mode 100644
index 0000000000..2c2a1ef794
--- /dev/null
+++ b/dom/webgpu/tests/cts/checkout/src/common/framework/metadata.ts
@@ -0,0 +1,28 @@
+import { assert } from '../util/util.js';
+
+/** Metadata about tests (that can't be derived at runtime). */
+export type TestMetadata = {
+  /**
+   * Estimated average time-per-subcase, in milliseconds.
+   * This is used to determine chunking granularity when exporting to WPT with
+   * chunking enabled (like out-wpt/cts-chunked2sec.https.html).
+   */
+  subcaseMS: number;
+};
+
+export type TestMetadataListing = {
+  [testQuery: string]: TestMetadata;
+};
+
+export function loadMetadataForSuite(suiteDir: string): TestMetadataListing | null {
+  assert(typeof require !== 'undefined', 'loadMetadataForSuite is only implemented on Node');
+  const fs = require('fs');
+
+  const metadataFile = `${suiteDir}/listing_meta.json`;
+  if (!fs.existsSync(metadataFile)) {
+    return null;
+  }
+
+  const metadata: TestMetadataListing = JSON.parse(fs.readFileSync(metadataFile, 'utf8'));
+  return metadata;
+}