test: cover deepseek max token limits

package.json

@@ -33,7 +33,7 @@
     "test:provider-recommendation": "node --test --experimental-strip-types src/utils/providerRecommendation.test.ts src/utils/providerProfile.test.ts",
     "typecheck": "tsc --noEmit",
     "smoke": "bun run build && node dist/cli.mjs --version",
-    "test:provider": "bun test src/services/api/*.test.ts",
+    "test:provider": "bun test src/services/api/*.test.ts src/utils/context.test.ts",
     "doctor:runtime": "bun run scripts/system-check.ts",
     "doctor:runtime:json": "bun run scripts/system-check.ts --json",
     "doctor:report": "bun run scripts/system-check.ts --out reports/doctor-runtime.json",

src/utils/context.test.ts

@@ -0,0 +1,37 @@
+import { afterEach, expect, test } from 'bun:test'
+
+import { getMaxOutputTokensForModel } from '../services/api/claude.ts'
+import {
+  getContextWindowForModel,
+  getModelMaxOutputTokens,
+} from './context.ts'
+
+const originalEnv = {
+  CLAUDE_CODE_USE_OPENAI: process.env.CLAUDE_CODE_USE_OPENAI,
+  CLAUDE_CODE_MAX_OUTPUT_TOKENS: process.env.CLAUDE_CODE_MAX_OUTPUT_TOKENS,
+}
+
+afterEach(() => {
+  process.env.CLAUDE_CODE_USE_OPENAI = originalEnv.CLAUDE_CODE_USE_OPENAI
+  process.env.CLAUDE_CODE_MAX_OUTPUT_TOKENS =
+    originalEnv.CLAUDE_CODE_MAX_OUTPUT_TOKENS
+})
+
+test('deepseek-chat uses provider-specific context and output caps', () => {
+  process.env.CLAUDE_CODE_USE_OPENAI = '1'
+  delete process.env.CLAUDE_CODE_MAX_OUTPUT_TOKENS
+
+  expect(getContextWindowForModel('deepseek-chat')).toBe(64_000)
+  expect(getModelMaxOutputTokens('deepseek-chat')).toEqual({
+    default: 8_192,
+    upperLimit: 8_192,
+  })
+  expect(getMaxOutputTokensForModel('deepseek-chat')).toBe(8_192)
+})
+
+test('deepseek-chat clamps oversized max output overrides to the provider limit', () => {
+  process.env.CLAUDE_CODE_USE_OPENAI = '1'
+  process.env.CLAUDE_CODE_MAX_OUTPUT_TOKENS = '32000'
+
+  expect(getMaxOutputTokensForModel('deepseek-chat')).toBe(8_192)
+})