wip(trusted-publishing): capture rule about targeting the official registry

for #958

Author: travi

lib/trusted-publishing/oidc-context.js

@@ -0,0 +1,5 @@
+import { OFFICIAL_REGISTRY } from "../definitions/constants.js";
+
+export default function oidcContextEstablished(registry) {
+  return OFFICIAL_REGISTRY === registry;
+}

test/trusted-publishing/oidc-context.test.js

@@ -0,0 +1,12 @@
+import test from "ava";
+
+import { OFFICIAL_REGISTRY } from "../../lib/definitions/constants.js";
+import oidcContextEstablished from "../../lib/trusted-publishing/oidc-context.js";
+
+test("that `true` is returned when a trusted-publishing context has been established with the official registry", async (t) => {
+  t.true(await oidcContextEstablished(OFFICIAL_REGISTRY));
+});
+
+test("that `false` is returned when a custom registry is targeted", async (t) => {
+  t.false(await oidcContextEstablished("https://custom.registry.org/"));
+});