1 files changed, 34 insertions, 0 deletions
diff --git a/apps/web/src/lib/stickers/__tests__/sticker-id.test.ts b/apps/web/src/lib/stickers/__tests__/sticker-id.test.ts
new file mode 100644
index 00000000..573dc251
--- /dev/null
+++ b/apps/web/src/lib/stickers/__tests__/sticker-id.test.ts
@@ -0,0 +1,34 @@
+import { describe, expect, test } from "bun:test";
+import { buildStickerId, parseStickerId } from "../sticker-id";
+
+describe("sticker-id strict mode", () => {
+	test("parses provider-prefixed IDs", () => {
+		expect(parseStickerId({ stickerId: "icons:mdi:home" })).toEqual({
+			providerId: "icons",
+			providerValue: "mdi:home",
+		});
+		expect(parseStickerId({ stickerId: "emoji:noto:grinning-face" })).toEqual({
+			providerId: "emoji",
+			providerValue: "noto:grinning-face",
+		});
+	});
+
+	test("throws for IDs without provider prefix", () => {
+		expect(() => parseStickerId({ stickerId: "home" })).toThrow();
+	});
+
+	test("throws for malformed IDs", () => {
+		expect(() => parseStickerId({ stickerId: "" })).toThrow();
+		expect(() => parseStickerId({ stickerId: "icons:" })).toThrow();
+		expect(() => parseStickerId({ stickerId: ":mdi:home" })).toThrow();
+	});
+
+	test("builds sticker IDs unchanged", () => {
+		expect(
+			buildStickerId({
+				providerId: "flags",
+				providerValue: "US",
+			}),
+		).toBe("flags:US");
+	});
+});