test: expand human-responses tests to 11 cases (isHumanPlayer, getPendingAnswers, numericDistractors)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/src/engine/human-responses.test.ts

@@ -1,5 +1,5 @@
 import { describe, it, expect, vi, afterEach } from 'vitest'
-import { waitForHumanResponse, submitHumanResponse, getPendingChallenge, clearAllPending } from './human-responses.js'
+import { waitForHumanResponse, submitHumanResponse, getPendingChallenge, getPendingAnswers, clearAllPending, isHumanPlayer } from './human-responses.js'
 import type { Challenge } from './challenges.js'
 
 const mockChallenge: Challenge = {
@@ -86,3 +86,50 @@ describe('submitHumanResponse', () => {
     expect(result.answer!.length).toBe(2000)
   })
 })
+
+describe('isHumanPlayer', () => {
+  it('returns true for human webhook URL', () => {
+    expect(isHumanPlayer('http://human.local/')).toBe(true)
+  })
+
+  it('returns false for non-human webhook URL', () => {
+    expect(isHumanPlayer('https://example.com/webhook')).toBe(false)
+    expect(isHumanPlayer('')).toBe(false)
+  })
+})
+
+describe('getPendingAnswers', () => {
+  it('returns answers for a pending challenge', () => {
+    waitForHumanResponse('fight-6', 'bot-6', mockChallenge, 1)
+    const answers = getPendingAnswers('fight-6', 'bot-6')
+    expect(answers).toEqual(['2009'])
+  })
+
+  it('returns undefined for non-pending challenge', () => {
+    const answers = getPendingAnswers('nonexistent', 'nobody')
+    expect(answers).toBeUndefined()
+  })
+})
+
+describe('generateChoices (via waitForHumanResponse)', () => {
+  it('generates numeric distractors for numeric answers', () => {
+    const numericChallenge: Challenge = {
+      type: 'math_blitz',
+      label: 'Math',
+      prompt: 'What is 7 * 8?',
+      answers: ['56'],
+      scoring: 'factual',
+      timeout_ms: 5000,
+      baseDamage: 18,
+    }
+    const { choices } = waitForHumanResponse('fight-7', 'bot-7', numericChallenge, 1)
+    expect(choices).toContain('56')
+    expect(choices.length).toBe(3)
+    // Distractors should be different from correct answer
+    const distractors = choices.filter(c => c !== '56')
+    expect(distractors.length).toBe(2)
+    for (const d of distractors) {
+      expect(Number(d)).not.toBeNaN()
+    }
+  })
+})