test: cover deepseek max token limits

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)
+})