chore: add tests

src/modules/atproto/parseAtUri.spec.ts

@@ -0,0 +1,54 @@
+import { describe, expect, it } from "vitest"
+
+import { parseAtUri } from "./parseAtUri"
+
+describe("parseAtUri", () => {
+  it("parses a did:plc AT URI", () => {
+    expect(
+      parseAtUri("at://did:plc:abc123/app.bsky.feed.post/rkey-xyz")
+    ).toEqual({
+      did: "did:plc:abc123",
+      rkey: "rkey-xyz"
+    })
+  })
+
+  it("parses a did:web AT URI", () => {
+    expect(
+      parseAtUri("at://did:web:example.com/space.remanso.note/note-1")
+    ).toEqual({
+      did: "did:web:example.com",
+      rkey: "note-1"
+    })
+  })
+
+  it("treats rkeys with slashes as a single trailing segment", () => {
+    expect(
+      parseAtUri("at://did:plc:abc/space.remanso.note/multi/segment")
+    ).toEqual({
+      did: "did:plc:abc",
+      rkey: "multi/segment"
+    })
+  })
+
+  it("throws when the URI does not start with at://", () => {
+    expect(() =>
+      parseAtUri("https://did:plc:abc/collection/rkey")
+    ).toThrow(/Invalid AT URI/)
+  })
+
+  it("throws when the DID prefix is missing", () => {
+    expect(() => parseAtUri("at://abc/collection/rkey")).toThrow(
+      /Invalid AT URI/
+    )
+  })
+
+  it("throws when the collection or rkey is missing", () => {
+    expect(() => parseAtUri("at://did:plc:abc/onlycollection")).toThrow(
+      /Invalid AT URI/
+    )
+  })
+
+  it("throws on empty input", () => {
+    expect(() => parseAtUri("")).toThrow(/Invalid AT URI/)
+  })
+})