1 files changed, 24 insertions, 0 deletions
diff --git a/src/lib/Effect/json.test.ts b/src/lib/Effect/json.test.ts
new file mode 100644
index 00000000..b315fe61
--- /dev/null
+++ b/src/lib/Effect/json.test.ts
@@ -0,0 +1,24 @@
+import { describe, expect, it } from "vitest";
+import {
+	parseJsonStringOrDefault,
+	parseJsonStringOrThrow,
+} from "$lib/Effect/json";
+
+describe("effect json parsing", () => {
+	it("parses valid json strings", () => {
+		expect(parseJsonStringOrThrow(`{"ok":true,"value":3}`)).toEqual({
+			ok: true,
+			value: 3,
+		});
+	});
+
+	it("throws for invalid json strings", () => {
+		expect(() => parseJsonStringOrThrow("{nope}")).toThrowError();
+	});
+
+	it("returns fallback for invalid json", () => {
+		expect(parseJsonStringOrDefault("{nope}", { ok: false })).toEqual({
+			ok: false,
+		});
+	});
+});