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import {
routeModel,
type SmartRoutingConfig,
} from './smartModelRouting.ts'
const ENABLED: SmartRoutingConfig = {
enabled: true,
simpleModel: 'claude-haiku-4-5',
strongModel: 'claude-opus-4-7',
}
describe('routeModel — disabled / misconfigured', () => {
test('disabled config routes to strong', () => {
const decision = routeModel(
{ userText: 'hi' },
{ ...ENABLED, enabled: false },
)
expect(decision.model).toBe('claude-opus-4-7')
expect(decision.complexity).toBe('strong')
expect(decision.reason).toContain('disabled')
})
test('missing simpleModel falls back to strong', () => {
const decision = routeModel(
{ userText: 'hi' },
{ ...ENABLED, simpleModel: '' },
)
expect(decision.model).toBe('claude-opus-4-7')
expect(decision.complexity).toBe('strong')
})
test('simpleModel === strongModel routes to strong (no-op)', () => {
const decision = routeModel(
{ userText: 'hi' },
{ ...ENABLED, simpleModel: 'claude-opus-4-7' },
)
expect(decision.model).toBe('claude-opus-4-7')
expect(decision.complexity).toBe('strong')
})
})
describe('routeModel — simple path', () => {
test('short greeting routes to simple', () => {
const decision = routeModel({ userText: 'thanks!', turnNumber: 5 }, ENABLED)
expect(decision.model).toBe('claude-haiku-4-5')
expect(decision.complexity).toBe('simple')
})
test('empty input routes to simple', () => {
const decision = routeModel({ userText: ' ' }, ENABLED)
expect(decision.model).toBe('claude-haiku-4-5')
expect(decision.complexity).toBe('simple')
})
test('mid-length chatter routes to simple', () => {
const decision = routeModel(
{ userText: 'yep looks good, go ahead', turnNumber: 10 },
ENABLED,
)
expect(decision.complexity).toBe('simple')
})
})
describe('routeModel — strong path', () => {
test('first turn always routes to strong, even when short', () => {
const decision = routeModel(
{ userText: 'fix the bug', turnNumber: 1 },
ENABLED,
)
expect(decision.model).toBe('claude-opus-4-7')
expect(decision.complexity).toBe('strong')
expect(decision.reason).toContain('first turn')
})
test('code fence routes to strong', () => {
const decision = routeModel(
{
userText: 'change this:\n```\nfoo()\n```',
turnNumber: 5,
},
ENABLED,
)
expect(decision.complexity).toBe('strong')
expect(decision.reason).toContain('code')
})
test('inline code span routes to strong', () => {
const decision = routeModel(
{ userText: 'rename `foo` to `bar`', turnNumber: 5 },
ENABLED,
)
expect(decision.complexity).toBe('strong')
})
test('reasoning keyword "plan" routes to strong even when short', () => {
const decision = routeModel(
{ userText: 'plan the refactor', turnNumber: 5 },
ENABLED,
)
expect(decision.complexity).toBe('strong')
expect(decision.reason).toContain('keyword')
})
test('reasoning keyword "debug" routes to strong', () => {
const decision = routeModel(
{ userText: 'debug the test', turnNumber: 5 },
ENABLED,
)
expect(decision.complexity).toBe('strong')
})
test('"root cause" multi-word keyword routes to strong', () => {
const decision = routeModel(
{ userText: 'find the root cause', turnNumber: 5 },
ENABLED,
)
expect(decision.complexity).toBe('strong')
})
test('multi-paragraph input routes to strong', () => {
const decision = routeModel(
{
userText: 'first thought.\n\nsecond thought.',
turnNumber: 5,
},
ENABLED,
)
expect(decision.complexity).toBe('strong')
expect(decision.reason).toContain('multi-paragraph')
})
test('over-long input routes to strong', () => {
const long = 'ok '.repeat(100) // ~300 chars, 100 words
const decision = routeModel(
{ userText: long, turnNumber: 5 },
ENABLED,
)
expect(decision.complexity).toBe('strong')
})
test('exactly at the boundary stays simple', () => {
const text = 'a'.repeat(160)
const decision = routeModel(
{ userText: text, turnNumber: 5 },
{ ...ENABLED, simpleMaxChars: 160, simpleMaxWords: 28 },
)
expect(decision.complexity).toBe('simple')
})
test('one char over the boundary routes to strong', () => {
const text = 'a'.repeat(161)
const decision = routeModel(
{ userText: text, turnNumber: 5 },
{ ...ENABLED, simpleMaxChars: 160, simpleMaxWords: 28 },
)
expect(decision.complexity).toBe('strong')
expect(decision.reason).toContain('160 chars')
})
})
describe('routeModel — config overrides', () => {
test('custom simpleMaxChars is honored', () => {
const decision = routeModel(
{ userText: 'abcdefghijklmnop', turnNumber: 5 },
{ ...ENABLED, simpleMaxChars: 10 },
)
expect(decision.complexity).toBe('strong')
expect(decision.reason).toContain('10 chars')
})
test('custom simpleMaxWords is honored', () => {
const decision = routeModel(
{ userText: 'one two three four five', turnNumber: 5 },
{ ...ENABLED, simpleMaxWords: 3 },
)
expect(decision.complexity).toBe('strong')
expect(decision.reason).toContain('3 words')
})
})
describe('routeModel — reason strings', () => {
test('simple decisions include char + word counts', () => {
const decision = routeModel(
{ userText: 'sounds good', turnNumber: 5 },
ENABLED,
)
expect(decision.reason).toMatch(/\d+ chars, \d+ words/)
})
})
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