107 lines
3.4 KiB
TypeScript
107 lines
3.4 KiB
TypeScript
import { describe, expect, test, setSystemTime, afterEach } from "bun:test"
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import { Subscription } from "../src/subscription"
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import { centsToMicroCents } from "../src/util/price"
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afterEach(() => {
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setSystemTime()
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})
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describe("Subscription.analyzeMonthlyUsage", () => {
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const subscribed = new Date("2026-01-15T08:00:00Z")
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test("returns ok with 0% when usage was last updated before current period", () => {
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setSystemTime(new Date("2026-03-20T10:00:00Z"))
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const result = Subscription.analyzeMonthlyUsage({
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limit: 10,
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usage: centsToMicroCents(500),
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timeUpdated: new Date("2026-02-10T00:00:00Z"),
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timeSubscribed: subscribed,
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})
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expect(result.status).toBe("ok")
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expect(result.usagePercent).toBe(0)
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// reset should be seconds until 2026-04-15T08:00:00Z
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const expected = Math.ceil(
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(new Date("2026-04-15T08:00:00Z").getTime() - new Date("2026-03-20T10:00:00Z").getTime()) / 1000,
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)
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expect(result.resetInSec).toBe(expected)
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})
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test("returns ok with usage percent when under limit", () => {
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setSystemTime(new Date("2026-03-20T10:00:00Z"))
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const limit = 10 // $10
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const half = centsToMicroCents(10 * 100) / 2
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const result = Subscription.analyzeMonthlyUsage({
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limit,
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usage: half,
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timeUpdated: new Date("2026-03-18T00:00:00Z"),
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timeSubscribed: subscribed,
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})
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expect(result.status).toBe("ok")
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expect(result.usagePercent).toBe(50)
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})
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test("returns rate-limited when at or over limit", () => {
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setSystemTime(new Date("2026-03-20T10:00:00Z"))
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const limit = 10
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const result = Subscription.analyzeMonthlyUsage({
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limit,
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usage: centsToMicroCents(limit * 100),
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timeUpdated: new Date("2026-03-18T00:00:00Z"),
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timeSubscribed: subscribed,
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})
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expect(result.status).toBe("rate-limited")
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expect(result.usagePercent).toBe(100)
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})
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test("resets usage when crossing monthly boundary", () => {
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// subscribed on 15th, now is April 16th — period is Apr 15 to May 15
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// timeUpdated is March 20 (previous period)
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setSystemTime(new Date("2026-04-16T10:00:00Z"))
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const result = Subscription.analyzeMonthlyUsage({
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limit: 10,
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usage: centsToMicroCents(10 * 100),
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timeUpdated: new Date("2026-03-20T00:00:00Z"),
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timeSubscribed: subscribed,
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})
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expect(result.status).toBe("ok")
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expect(result.usagePercent).toBe(0)
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})
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test("caps usage percent at 100", () => {
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setSystemTime(new Date("2026-03-20T10:00:00Z"))
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const limit = 10
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const result = Subscription.analyzeMonthlyUsage({
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limit,
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usage: centsToMicroCents(limit * 100) - 1,
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timeUpdated: new Date("2026-03-18T00:00:00Z"),
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timeSubscribed: subscribed,
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})
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expect(result.status).toBe("ok")
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expect(result.usagePercent).toBeLessThanOrEqual(100)
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})
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test("handles subscription day 31 in short month", () => {
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const sub31 = new Date("2026-01-31T12:00:00Z")
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// now is March 1 — period should be Feb 28 to Mar 31
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setSystemTime(new Date("2026-03-01T10:00:00Z"))
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const result = Subscription.analyzeMonthlyUsage({
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limit: 10,
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usage: 0,
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timeUpdated: new Date("2026-03-01T09:00:00Z"),
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timeSubscribed: sub31,
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})
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expect(result.status).toBe("ok")
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expect(result.usagePercent).toBe(0)
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const expected = Math.ceil(
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(new Date("2026-03-31T12:00:00Z").getTime() - new Date("2026-03-01T10:00:00Z").getTime()) / 1000,
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)
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expect(result.resetInSec).toBe(expected)
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})
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})
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