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opencode

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opencode
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import { describe, expect, test } from "bun:test"
import { displayCharAt, displaySlice, mentionTriggerIndex } from "../../src/prompt/display"

describe("prompt display", () => {
  test("uses display-width offsets for mentions", () => {
    expect(mentionTriggerIndex("@")).toBe(0)
    expect(mentionTriggerIndex("test @")).toBe(5)
    expect(mentionTriggerIndex("δΈ­ζ–‡ @")).toBe(5)
    expect(mentionTriggerIndex("こんにけは @")).toBe(11)
    expect(mentionTriggerIndex("ν•œκ΅­μ–΄ @")).toBe(7)
    expect(mentionTriggerIndex("πŸ™‚ @")).toBe(3)
    expect(mentionTriggerIndex("δΈ­ζ–‡ @src file", Bun.stringWidth("δΈ­ζ–‡ @src"))).toBe(5)
    expect(displayCharAt("δΈ­ζ–‡ @src", Bun.stringWidth("δΈ­ζ–‡ @"))).toBe("s")
    expect(displaySlice("δΈ­ζ–‡ @src", 5, Bun.stringWidth("δΈ­ζ–‡ @src"))).toBe("@src")
    expect(displaySlice("δΈ­ζ–‡ @src", 6, Bun.stringWidth("δΈ­ζ–‡ @src"))).toBe("src")
    expect(mentionTriggerIndex("πŸ‘¨β€πŸ‘©β€πŸ‘§β€πŸ‘¦ @src", Bun.stringWidth("πŸ‘¨β€πŸ‘©β€πŸ‘§β€πŸ‘¦ @src"))).toBe(3)
    expect(displayCharAt("πŸ‘¨β€πŸ‘©β€πŸ‘§β€πŸ‘¦ @src", Bun.stringWidth("πŸ‘¨β€πŸ‘©β€πŸ‘§β€πŸ‘¦ @"))).toBe("s")
    expect(displaySlice("πŸ‘¨β€πŸ‘©β€πŸ‘§β€πŸ‘¦ @src", 3, Bun.stringWidth("πŸ‘¨β€πŸ‘©β€πŸ‘§β€πŸ‘¦ @src"))).toBe("@src")
    expect(mentionTriggerIndex("@file1\n@file2", 13)).toBe(7)
    expect(displayCharAt("@file1\n@file2", 6)).toBe("\n")
    expect(displaySlice("@file1\n@file2", 8, 13)).toBe("file2")
    expect(mentionTriggerIndex("@file1\nfoo @file2", 17)).toBe(11)
    expect(mentionTriggerIndex("δΈ­ζ–‡ @one\n@two", 14)).toBe(10)
    expect(displaySlice("δΈ­ζ–‡ @one\n@two", 11, 14)).toBe("two")
    expect(mentionTriggerIndex("δΈ­ζ–‡@")).toBeUndefined()
    expect(mentionTriggerIndex("こんにけは@")).toBeUndefined()
    expect(mentionTriggerIndex("ν•œκ΅­μ–΄@")).toBeUndefined()
    expect(mentionTriggerIndex("πŸ™‚@")).toBeUndefined()
    expect(mentionTriggerIndex("hello@")).toBeUndefined()
    expect(mentionTriggerIndex("foo@bar.com")).toBeUndefined()
    expect(mentionTriggerIndex("δΈ­ζ–‡ @src file")).toBeUndefined()
  })
})