Add pniSignatureVerified support

ts/util/generateConfigMatrix.ts

@@ -0,0 +1,50 @@
+// Copyright 2024 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+// Only for tests. Use this to generate multiple test cases for a config matrix.
+//
+// Example:
+//
+//   generateConfigMatrix({
+//     contacts: [20, 30],
+//     hasNotification: [false, true],
+//   });
+//
+// Outputs:
+//
+//   [
+//     { contacts: 20, hasNotification: false },
+//     { contacts: 30, hasNotification: false },
+//     { contacts: 20, hasNotification: true },
+//     { contacts: 30, hasNotification: true },
+//   ]
+export function generateConfigMatrix<Config>(combinations: {
+  [K in keyof Config]: ReadonlyArray<Config[K]>;
+}): ReadonlyArray<Config> {
+  let result = [{} as Record<string, unknown>];
+
+  const entries = [...Object.entries(combinations)] as Array<
+    [string, ReadonlyArray<unknown>]
+  >;
+  if (
+    entries.length === 0 ||
+    entries.every(([, values]) => values.length === 0)
+  ) {
+    return [];
+  }
+
+  for (const [key, values] of entries) {
+    result = values
+      // Make a copy of each existing result for each value
+      // eslint-disable-next-line no-loop-func
+      .map(value =>
+        result.map(config => ({
+          ...config,
+          [key]: value,
+        }))
+      )
+      .flat();
+  }
+
+  return result as ReadonlyArray<Config>;
+}