Add filter.test.ts

fixtures/events/event-0.json

@@ -0,0 +1,15 @@
+{
+  "id": "63d38c9b483d2d98a46382eadefd272e0e4bdb106a5b6eddb400c4e76f693d35",
+  "pubkey": "79c2cae114ea28a981e7559b4fe7854a473521a8d22a66bbab9fa248eb820ff6",
+  "created_at": 1699398376,
+  "kind": 0,
+  "tags": [
+    [
+      "proxy",
+      "https://gleasonator.com/users/alex",
+      "activitypub"
+    ]
+  ],
+  "content": "{\"name\":\"Alex Gleason\",\"about\":\"I create Fediverse software that empowers people online.\\n\\nI'm vegan btw.\\n\\nNote: If you have a question for me, please tag me publicly. This gives the opportunity for others to chime in, and bystanders to learn.\",\"picture\":\"https://media.gleasonator.com/aae0071188681629f200ab41502e03b9861d2754a44c008d3869c8a08b08d1f1.png\",\"banner\":\"https://media.gleasonator.com/e5f6e0e380536780efa774e8d3c8a5a040e3f9f99dbb48910b261c32872ee3a3.gif\",\"nip05\":\"alex_at_gleasonator.com@mostr.pub\",\"lud16\":\"alex@alexgleason.me\"}",
+  "sig": "9d48bbb600aab44abaeee11c97f1753f1d7de08378e9b33d84f9be893a09270aeceecfde3cfb698c555ae1bde3e4e54b3463a61bb99bdf673d64c2202f98b0e9"
+}

fixtures/events/event-1.json

@@ -0,0 +1,15 @@
+{
+  "kind": 1,
+  "content": "I'm vegan btw",
+  "tags": [
+    [
+      "proxy",
+      "https://gleasonator.com/objects/8f6fac53-4f66-4c6e-ac7d-92e5e78c3e79",
+      "activitypub"
+    ]
+  ],
+  "pubkey": "79c2cae114ea28a981e7559b4fe7854a473521a8d22a66bbab9fa248eb820ff6",
+  "created_at": 1691091365,
+  "id": "55920b758b9c7b17854b6e3d44e6a02a83d1cb49e1227e75a30426dea94d4cb2",
+  "sig": "a72f12c08f18e85d98fb92ae89e2fe63e48b8864c5e10fbdd5335f3c9f936397a6b0a7350efe251f8168b1601d7012d4a6d0ee6eec958067cf22a14f5a5ea579"
+}

src/filter.test.ts

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+import { type Event } from '@/deps.ts';
+import { assertEquals } from '@/deps-test.ts';
+
+import event0 from '~/fixtures/events/event-0.json' assert { type: 'json' };
+import event1 from '~/fixtures/events/event-1.json' assert { type: 'json' };
+
+import { eventToMicroFilter, getFilterId, getMicroFilters, isMicrofilter } from './filter.ts';
+
+Deno.test('getMicroFilters', () => {
+  const event = event0 as Event<0>;
+  const microfilters = getMicroFilters(event);
+  assertEquals(microfilters.length, 2);
+  assertEquals(microfilters[0], { authors: [event.pubkey], kinds: [0] });
+  assertEquals(microfilters[1], { ids: [event.id] });
+});
+
+Deno.test('eventToMicroFilter', () => {
+  assertEquals(eventToMicroFilter(event0), { authors: [event0.pubkey], kinds: [0] });
+  assertEquals(eventToMicroFilter(event1), { ids: [event1.id] });
+});
+
+Deno.test('isMicrofilter', () => {
+  assertEquals(isMicrofilter({ ids: [event0.id] }), true);
+  assertEquals(isMicrofilter({ authors: [event0.pubkey], kinds: [0] }), true);
+  assertEquals(isMicrofilter({ ids: [event0.id], authors: [event0.pubkey], kinds: [0] }), false);
+});
+
+Deno.test('getFilterId', () => {
+  assertEquals(
+    getFilterId({ ids: [event0.id] }),
+    '{"ids":["63d38c9b483d2d98a46382eadefd272e0e4bdb106a5b6eddb400c4e76f693d35"]}',
+  );
+  assertEquals(
+    getFilterId({ authors: [event0.pubkey], kinds: [0] }),
+    '{"authors":["79c2cae114ea28a981e7559b4fe7854a473521a8d22a66bbab9fa248eb820ff6"],"kinds":[0]}',
+  );
+});