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test(tui): capture flushed Mini scrollback output #46505

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Merged
kitlangton merged 1 commit into from
Sep 1, 2026
Merged

test(tui): capture flushed Mini scrollback output #46505

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40 changes: 18 additions & 22 deletions packages/tui/test/mini/scrollback.surface.test.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -93,6 +93,8 @@ async function setup(

return {
renderer: out.renderer,
renderOnce: out.renderOnce,
externalOutput: out.externalOutput,
scrollback: new RunScrollbackStream(out.renderer, input.theme ?? RUN_THEME_FALLBACK, {
treeSitterClient,
wrote: input.wrote ?? false,
Expand Down Expand Up @@ -220,28 +222,22 @@ test.each([false, true])("monochrome switches preserve printed blocks and open f
await out.scrollback.setMono(mono)
out.scrollback.setTheme(mono ? RUN_THEME_MONO : RUN_THEME_FALLBACK)
await out.scrollback.append(assistant('Printed block\n\n```ts\nconst arrow = "'))
const printed = claim(out.renderer)
try {
expect(render(printed)).toContain("Printed block")
expect(render(printed)).not.toContain("const arrow")
await out.scrollback.setMono(!mono)
out.scrollback.setTheme(mono ? RUN_THEME_FALLBACK : RUN_THEME_MONO)
expect(render(claim(out.renderer))).toBe("")
await out.scrollback.append(assistant('\u2192"\n```\n\nNext block'))
await out.scrollback.complete()
const next = claim(out.renderer)
try {
expect(render(next)).toContain(mono ? 'const arrow = "\u2192"' : 'const arrow = "->"')
expect(render(next)).toContain("Next block")
expect(render(next)).not.toContain("Printed block")
expect(render(next)).not.toContain("```")
expect(render(printed)).toContain("Printed block")
} finally {
destroy(next)
}
} finally {
destroy(printed)
}
await out.renderOnce()
const printed = out.externalOutput.takeText()
expect(printed).toContain("Printed block")
expect(printed).not.toContain("const arrow")
await out.scrollback.setMono(!mono)
out.scrollback.setTheme(mono ? RUN_THEME_FALLBACK : RUN_THEME_MONO)
expect(out.externalOutput.takeText()).toBe("")
await out.scrollback.append(assistant('\u2192"\n```\n\nNext block'))
// A frame can flush the code block while completion is awaiting highlighting.
await out.renderOnce()
await out.scrollback.complete()
const next = out.externalOutput.takeText()
expect(next).toContain(mono ? 'const arrow = "\u2192"' : 'const arrow = "->"')
expect(next).toContain("Next block")
expect(next).not.toContain("Printed block")
expect(next).not.toContain("```")
} finally {
out.scrollback.destroy()
destroy(claim(out.renderer))
Expand Down
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