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eb1202c | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 | import { describe, expect, test } from "bun:test"
import { adaptServerEvent, coalesceServerEvents, enqueueServerEvent, resumeStreamAfterPageShow } from "./server-sdk"
import type { OpenCodeEvent } from "@opencode-ai/client/promise"
import type { Event } from "@opencode-ai/sdk/v2/client"
describe("resumeStreamAfterPageShow", () => {
test("restarts a stream only after a back-forward cache restore", () => {
let starts = 0
const start = () => starts++
resumeStreamAfterPageShow({ persisted: false } as PageTransitionEvent, start)
resumeStreamAfterPageShow({ persisted: true } as PageTransitionEvent, start)
expect(starts).toBe(1)
})
})
describe("adaptServerEvent", () => {
test("preserves V2 events while adapting permission requests for existing consumers", () => {
const current = {
id: "evt_1",
created: 1,
type: "permission.v2.asked",
data: { id: "perm_1", sessionID: "ses_1", action: "read", resources: ["src/**"] },
} as OpenCodeEvent
expect(adaptServerEvent(current)).toMatchObject({
type: "permission.asked",
properties: { id: "perm_1", sessionID: "ses_1", permission: "read", patterns: ["src/**"] },
current,
})
})
})
describe("coalesceServerEvents", () => {
const delta = (value: string, field = "text", partID = "part") => ({
directory: "/repo",
payload: {
type: "message.part.delta",
properties: { messageID: "msg", partID, field, delta: value },
} as Event,
})
test("merges adjacent deltas for the same field", () => {
const first = delta("hello ")
const second = delta("world")
first.payload.id = "first"
second.payload.id = "second"
const result = coalesceServerEvents([first, second])
expect(result).toHaveLength(1)
expect(result[0]?.payload).toMatchObject({ id: "second", properties: { delta: "hello world" } })
})
test("merges adjacent current text deltas", () => {
const current = (id: string, value: string) =>
adaptServerEvent({
id,
created: 1,
type: "session.text.delta",
location: { directory: "/repo" },
data: { sessionID: "ses", assistantMessageID: "msg", ordinal: 0, delta: value },
} as OpenCodeEvent)
const result = coalesceServerEvents([
{ directory: "/repo", payload: current("evt_1", "hello ") },
{ directory: "/repo", payload: current("evt_2", "world") },
])
expect(result).toHaveLength(1)
expect(result[0]?.payload.current).toMatchObject({ id: "evt_2", data: { delta: "hello world" } })
})
test("preserves event boundaries and distinct fields", () => {
const status = {
directory: "/repo",
payload: { type: "session.status", properties: { sessionID: "ses", status: { type: "idle" } } } as Event,
}
const result = coalesceServerEvents([delta("a"), delta("b", "metadata"), status, delta("c")])
expect(result.map((event) => event.payload.type)).toEqual([
"message.part.delta",
"message.part.delta",
"session.status",
"message.part.delta",
])
})
test("preserves event ID order across interleaved deltas", () => {
const first = delta("a")
const other = delta("b", "text", "other")
const last = delta("c")
first.payload.id = "1"
other.payload.id = "2"
last.payload.id = "3"
const result = coalesceServerEvents([first, other, last])
expect(result.map((event) => event.payload.id)).toEqual(["1", "2", "3"])
})
})
describe("enqueueServerEvent", () => {
const partUpdated = (text: string) =>
({
type: "message.part.updated",
properties: {
sessionID: "session",
part: { id: "part", sessionID: "session", messageID: "message", type: "text", text },
},
}) as Event
test("preserves part updates across message remove and re-add barriers", () => {
const events: Array<{ directory: string; payload: Event }> = []
const enqueue = (payload: Event) => enqueueServerEvent(events, { directory: "/repo", payload })
enqueue(partUpdated("old"))
enqueue({ type: "message.removed", properties: { sessionID: "session", messageID: "message" } } as Event)
enqueue({
type: "message.updated",
properties: {
sessionID: "session",
info: {
id: "message",
sessionID: "session",
role: "user",
time: { created: 1 },
agent: "build",
model: { providerID: "provider", modelID: "model" },
},
},
} as Event)
enqueue(partUpdated("new"))
expect(events.map((event) => event.payload.type)).toEqual([
"message.part.updated",
"message.removed",
"message.updated",
"message.part.updated",
])
})
test("preserves deltas after a replacement snapshot", () => {
const events: Array<{ directory: string; payload: Event }> = []
const enqueue = (payload: Event) => enqueueServerEvent(events, { directory: "/repo", payload })
enqueue(partUpdated("a"))
enqueue(partUpdated("ab"))
enqueue({
type: "message.part.delta",
properties: { sessionID: "session", messageID: "message", partID: "part", field: "text", delta: "c" },
} as Event)
const result = coalesceServerEvents(events)
expect(result.map((event) => event.payload.type)).toEqual(["message.part.updated", "message.part.delta"])
expect(result[0]?.payload).toMatchObject({ properties: { part: { text: "ab" } } })
expect(result[1]?.payload).toMatchObject({ properties: { delta: "c" } })
})
test("preserves updates after session deletion", () => {
const events: Array<{ directory: string; payload: Event }> = []
const enqueue = (payload: Event) => enqueueServerEvent(events, { directory: "/repo", payload })
enqueue(partUpdated("old"))
enqueue({
type: "session.deleted",
properties: { sessionID: "session", info: { id: "session" } },
} as Event)
enqueue(partUpdated("new"))
expect(events.map((event) => event.payload.type)).toEqual([
"message.part.updated",
"session.deleted",
"message.part.updated",
])
})
test("does not coalesce edge-triggered session statuses", () => {
const events: Array<{ directory: string; payload: Event }> = []
const enqueue = (status: "retry" | "busy") =>
enqueueServerEvent(events, {
directory: "/repo",
payload: {
type: "session.status",
properties: {
sessionID: "session",
status: status === "retry" ? { type: "retry", attempt: 1, message: "retry", next: 1 } : { type: "busy" },
},
} as Event,
})
enqueue("retry")
enqueue("busy")
expect(events).toHaveLength(2)
})
})
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