Files
deepseek-harness/packages/client/connection/tests/loopback-hostname.spec.ts
2026-08-02 13:24:49 -07:00

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TypeScript

/** Shared loopback-hostname semantics for the Host fence and browser UI. */
import { describe, expect, it } from 'vitest'
import { isLoopbackHostname } from '../src/loopback-hostname.ts'
describe('isLoopbackHostname', () => {
it('accepts localhost, IPv6 loopback, and the whole IPv4 127/8 block', () => {
for (const hostname of ['localhost', '[::1]', '127.0.0.1', '127.8.9.10', '127.255.255.255']) {
expect(isLoopbackHostname(hostname)).toBe(true)
}
})
it('refuses malformed and non-loopback hostnames', () => {
for (const hostname of ['remote.localhost', '::1', '128.0.0.1', '127.0.0', '127.0.0.256', '127.0.0.-1']) {
expect(isLoopbackHostname(hostname)).toBe(false)
}
})
})