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import { describe, expect, test } from "bun:test"
import {
canDisposeDirectory,
estimateRootSessionTotal,
loadRootSessionsWithFallback,
pickDirectoriesToEvict,
} from "./global-sync"
describe("pickDirectoriesToEvict", () => {
test("keeps pinned stores and evicts idle stores", () => {
const now = 5_000
const picks = pickDirectoriesToEvict({
stores: ["a", "b", "c", "d"],
state: new Map([
["a", { lastAccessAt: 1_000 }],
["b", { lastAccessAt: 4_900 }],
["c", { lastAccessAt: 4_800 }],
["d", { lastAccessAt: 3_000 }],
]),
pins: new Set(["a"]),
max: 2,
ttl: 1_500,
now,
})
expect(picks).toEqual(["d", "c"])
})
})
describe("loadRootSessionsWithFallback", () => {
test("uses limited roots query when supported", async () => {
const calls: Array<{ directory: string; roots: true; limit?: number }> = []
let fallback = 0
const result = await loadRootSessionsWithFallback({
directory: "dir",
limit: 10,
list: async (query) => {
calls.push(query)
return { data: [] }
},
onFallback: () => {
fallback += 1
},
})
expect(result.data).toEqual([])
expect(result.limited).toBe(true)
expect(calls).toEqual([{ directory: "dir", roots: true, limit: 10 }])
expect(fallback).toBe(0)
})
test("falls back to full roots query on limited-query failure", async () => {
const calls: Array<{ directory: string; roots: true; limit?: number }> = []
let fallback = 0
const result = await loadRootSessionsWithFallback({
directory: "dir",
limit: 25,
list: async (query) => {
calls.push(query)
if (query.limit) throw new Error("unsupported")
return { data: [] }
},
onFallback: () => {
fallback += 1
},
})
expect(result.data).toEqual([])
expect(result.limited).toBe(false)
expect(calls).toEqual([
{ directory: "dir", roots: true, limit: 25 },
{ directory: "dir", roots: true },
])
expect(fallback).toBe(1)
})
})
describe("estimateRootSessionTotal", () => {
test("keeps exact total for full fetches", () => {
expect(estimateRootSessionTotal({ count: 42, limit: 10, limited: false })).toBe(42)
})
test("marks has-more for full-limit limited fetches", () => {
expect(estimateRootSessionTotal({ count: 10, limit: 10, limited: true })).toBe(11)
})
test("keeps exact total when limited fetch is under limit", () => {
expect(estimateRootSessionTotal({ count: 9, limit: 10, limited: true })).toBe(9)
})
})
describe("canDisposeDirectory", () => {
test("rejects pinned or inflight directories", () => {
expect(
canDisposeDirectory({
directory: "dir",
hasStore: true,
pinned: true,
booting: false,
loadingSessions: false,
}),
).toBe(false)
expect(
canDisposeDirectory({
directory: "dir",
hasStore: true,
pinned: false,
booting: true,
loadingSessions: false,
}),
).toBe(false)
expect(
canDisposeDirectory({
directory: "dir",
hasStore: true,
pinned: false,
booting: false,
loadingSessions: true,
}),
).toBe(false)
})
test("accepts idle unpinned directory store", () => {
expect(
canDisposeDirectory({
directory: "dir",
hasStore: true,
pinned: false,
booting: false,
loadingSessions: false,
}),
).toBe(true)
})
})
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