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fix(tui): flag likely cache busts accurately (#38727)

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Kit Langton 2026-07-24 14:35:13 -04:00 • committed by GitHub
commit 3193f3aa95
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3 changed files with 131 additions and 20 deletions
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88
packages/tui/test/cli/tui/session-rows.test.ts
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@ -1,6 +1,92 @@
import { expect, test } from "bun:test"
import type { SessionMessageAssistant, SessionMessageInfo } from "@opencode-ai/client"
import { messageBoundaryIDs, reduceSessionRows } from "../../../src/routes/session/rows"
import { cacheReuseDrop, messageBoundaryIDs, reduceSessionRows } from "../../../src/routes/session/rows"
test("filters OpenAI cache quantization from cache reuse drops", () => {
const openai = { id: "gpt", providerID: "openai" }
expect(cacheReuseDrop(undefined, { read: 10_000, model: openai })).toBeUndefined()
expect(cacheReuseDrop({ read: 10_000, model: openai }, { read: 11_000, model: openai })).toBeUndefined()
expect(cacheReuseDrop({ read: 10_000, model: openai }, { read: 8_977, model: openai })).toBe(1_023)
expect(cacheReuseDrop({ read: 10_000, model: openai }, { read: 8_976, model: openai })).toBeUndefined()
expect(cacheReuseDrop({ read: 10_000, model: openai }, { read: 8_500, model: openai })).toBeUndefined()
expect(cacheReuseDrop({ read: 10_000, model: openai }, { read: 7_952, model: openai })).toBeUndefined()
expect(cacheReuseDrop({ read: 10_000, model: openai }, { read: 7_951, model: openai })).toBe(2_049)
})
test("compares cache reuse only for the same model", () => {
const previous = { read: 10_000, model: { id: "claude", providerID: "anthropic" } }
expect(cacheReuseDrop(previous, { read: 8_976, model: { id: "gpt", providerID: "openai" } })).toBeUndefined()
expect(cacheReuseDrop(previous, { read: 8_976, model: { id: "claude", providerID: "anthropic" } })).toBe(1_024)
expect(
cacheReuseDrop(
{ read: 10_000, model: { id: "gpt", providerID: "openai", variant: "low" } },
{ read: 8_976, model: { id: "gpt", providerID: "openai", variant: "high" } },
),
).toBeUndefined()
})
test("carries model identity with the cross-turn cache baseline", () => {
const first = assistant("assistant-1", [])
first.model = { id: "claude", providerID: "anthropic" }
first.finish = "stop"
first.tokens = { input: 1, output: 0, reasoning: 0, cache: { read: 10_000, write: 0 } }
const second = assistant("assistant-2", [])
second.model = { id: "gpt", providerID: "openai" }
second.finish = "stop"
second.tokens = { input: 1, output: 0, reasoning: 0, cache: { read: 8_976, write: 0 } }
const rows = reduceSessionRows(
[
{ type: "user", id: "user-1", text: "First", time: { created: 0 } },
first,
{ type: "user", id: "user-2", text: "Second", time: { created: 2 } },
second,
],
new Set(),
true,
).filter((row) => row.type === "turn-usage")
expect(rows).toEqual([
{ type: "turn-usage", messageIDs: ["assistant-1"] },
{
type: "turn-usage",
messageIDs: ["assistant-2"],
previousCache: { read: 10_000, model: { id: "claude", providerID: "anthropic" } },
},
])
})
test("resets the cross-turn cache baseline after compaction", () => {
const first = assistant("assistant-1", [])
first.finish = "stop"
first.tokens = { input: 1, output: 0, reasoning: 0, cache: { read: 370_176, write: 0 } }
const second = assistant("assistant-2", [])
second.finish = "stop"
second.tokens = { input: 1, output: 0, reasoning: 0, cache: { read: 13_824, write: 0 } }
const rows = reduceSessionRows(
[
first,
{
type: "compaction",
id: "compaction-1",
status: "completed",
reason: "auto",
summary: "Compacted context",
recent: "",
time: { created: 2 },
},
second,
],
new Set(),
true,
).filter((row) => row.type === "turn-usage")
expect(rows).toEqual([
{ type: "turn-usage", messageIDs: ["assistant-1"] },
{ type: "turn-usage", messageIDs: ["assistant-2"] },
])
})
test("assigns assistant boundaries to the first rendered row instead of the first text row", () => {
const messages: SessionMessageInfo[] = [