feat(tiered_pricing): 🔴 should return price for 1 subscription

Author: adrianliz

exercises/graduated_tiered_prices/solutions/adrianliz/tests/GraduatedTieredPricing.test.ts

@@ -1,5 +1,14 @@
+class GraduatedTieredPricing {
+  priceFor(subscriptions: number): number {
+    throw new Error("Not implemented yet");
+  }
+}
+
 describe("Graduated tiered pricing should", () => {
-  // TODO: Graduated tiered pricing spec
+  it("calculate the price for 1 subscription", () => {
+    const pricing = new GraduatedTieredPricing();
+    expect(pricing.priceFor(1)).toBe(299);
+  });
 });
 
 test("test framework working", async () => {