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* Cache Control Field Test (Issue #189)
*
* Tests that cache_control fields on content blocks are properly stripped
* before being sent to the Cloud Code API.
*
* Claude Code CLI sends cache_control on text, thinking, tool_use, tool_result,
* image, and document blocks for prompt caching optimization. The Cloud Code API
* rejects these with "Extra inputs are not permitted".
*
* This test verifies that:
* 1. Text blocks with cache_control work correctly
* 2. Multi-turn conversations with cache_control on assistant content work
* 3. Tool_result blocks with cache_control work correctly
*
* Runs for both Claude and Gemini model families.
*/
const { streamRequest, analyzeContent, commonTools } = require('./helpers/http-client.cjs');
const { getTestModels, getModelConfig } = require('./helpers/test-models.cjs');
const tools = [commonTools.getWeather];
async function runTestsForModel(family, model) {
console.log('='.repeat(60));
console.log(`CACHE CONTROL TEST [${family.toUpperCase()}]`);
console.log(`Model: ${model}`);
console.log('Tests that cache_control fields are stripped from all block types');
console.log('='.repeat(60));
console.log('');
let allPassed = true;
const results = [];
const modelConfig = getModelConfig(family);
// ===== TEST 1: User text block with cache_control =====
console.log('TEST 1: User text block with cache_control');
console.log('-'.repeat(40));
try {
const test1Result = await streamRequest({
model,
max_tokens: modelConfig.max_tokens,
stream: true,
thinking: modelConfig.thinking,
messages: [
{
role: 'user',
content: [
{
type: 'text',
text: 'What is the capital of France? Reply in one word.',
cache_control: { type: 'ephemeral' }
}
]
}
]
});
const hasError1 = test1Result.events.some(e => e.type === 'error');
const errorMsg1 = hasError1
? test1Result.events.find(e => e.type === 'error')?.data?.error?.message
: null;
console.log(` Response received: ${test1Result.content.length > 0 ? 'YES' : 'NO'}`);
console.log(` Has error: ${hasError1 ? 'YES' : 'NO'}`);
if (hasError1) {
console.log(` Error message: ${errorMsg1}`);
}
const content1 = analyzeContent(test1Result.content);
if (content1.hasText) {
console.log(` Response preview: "${content1.text[0].text.substring(0, 50)}..."`);
}
const test1Pass = !hasError1 && test1Result.content.length > 0;
results.push({ name: 'User text block with cache_control', passed: test1Pass });
console.log(` Result: ${test1Pass ? 'PASS' : 'FAIL'}`);
if (!test1Pass) allPassed = false;
} catch (err) {
console.log(` ERROR: ${err.message}`);
results.push({ name: 'User text block with cache_control', passed: false });
allPassed = false;
}
// ===== TEST 2: Multi-turn with cache_control on assistant content =====
console.log('\nTEST 2: Multi-turn with cache_control on assistant content');
console.log('-'.repeat(40));
try {
// First turn - get a response
const turn1 = await streamRequest({
model,
max_tokens: modelConfig.max_tokens,
stream: true,
thinking: modelConfig.thinking,
messages: [
{ role: 'user', content: 'Say hello.' }
]
});
if (turn1.content.length === 0) {
console.log(' SKIPPED - Turn 1 returned empty response');
results.push({ name: 'Multi-turn with cache_control', passed: false, skipped: true });
} else {
// Add cache_control to ALL blocks in assistant response (simulating Claude Code)
const modifiedContent = turn1.content.map(block => ({
...block,
cache_control: { type: 'ephemeral' }
}));
// Second turn - use modified content with cache_control
const turn2 = await streamRequest({
model,
max_tokens: modelConfig.max_tokens,
stream: true,
thinking: modelConfig.thinking,
messages: [
{ role: 'user', content: 'Say hello.' },
{ role: 'assistant', content: modifiedContent },
{
role: 'user',
content: [
{
type: 'text',
text: 'Now say goodbye.',
cache_control: { type: 'ephemeral' }
}
]
}
]
});
const hasError2 = turn2.events.some(e => e.type === 'error');
const errorMsg2 = hasError2
? turn2.events.find(e => e.type === 'error')?.data?.error?.message
: null;
console.log(` Turn 1 blocks: ${turn1.content.length}`);
console.log(` Turn 2 response received: ${turn2.content.length > 0 ? 'YES' : 'NO'}`);
console.log(` Has error: ${hasError2 ? 'YES' : 'NO'}`);
if (hasError2) {
console.log(` Error message: ${errorMsg2}`);
// Check specifically for cache_control error
if (errorMsg2 && errorMsg2.includes('cache_control')) {
console.log(' >>> cache_control field NOT stripped properly! <<<');
}
}
const content2 = analyzeContent(turn2.content);
if (content2.hasText) {
console.log(` Response preview: "${content2.text[0].text.substring(0, 50)}..."`);
}
const test2Pass = !hasError2 && turn2.content.length > 0;
results.push({ name: 'Multi-turn with cache_control', passed: test2Pass });
console.log(` Result: ${test2Pass ? 'PASS' : 'FAIL'}`);
if (!test2Pass) allPassed = false;
}
} catch (err) {
console.log(` ERROR: ${err.message}`);
results.push({ name: 'Multi-turn with cache_control', passed: false });
allPassed = false;
}
// ===== TEST 3: Tool loop with cache_control on tool_result =====
console.log('\nTEST 3: Tool loop with cache_control on tool_result');
console.log('-'.repeat(40));
try {
// First turn - request tool use
const toolTurn1 = await streamRequest({
model,
max_tokens: modelConfig.max_tokens,
stream: true,
tools,
thinking: modelConfig.thinking,
messages: [
{ role: 'user', content: 'What is the weather in Tokyo? Use the get_weather tool.' }
]
});
const content3a = analyzeContent(toolTurn1.content);
if (!content3a.hasToolUse) {
console.log(' SKIPPED - Model did not use tool in turn 1');
results.push({ name: 'Tool_result with cache_control', passed: true, skipped: true });
} else {
const toolUseId = content3a.toolUse[0].id;
console.log(` Tool use ID: ${toolUseId}`);
// Second turn - provide tool result with cache_control
const toolTurn2 = await streamRequest({
model,
max_tokens: modelConfig.max_tokens,
stream: true,
tools,
thinking: modelConfig.thinking,
messages: [
{ role: 'user', content: 'What is the weather in Tokyo? Use the get_weather tool.' },
{ role: 'assistant', content: toolTurn1.content },
{
role: 'user',
content: [
{
type: 'tool_result',
tool_use_id: toolUseId,
content: 'The weather in Tokyo is 22°C and partly cloudy.',
cache_control: { type: 'ephemeral' }
}
]
}
]
});
const hasError3 = toolTurn2.events.some(e => e.type === 'error');
const errorMsg3 = hasError3
? toolTurn2.events.find(e => e.type === 'error')?.data?.error?.message
: null;
console.log(` Turn 2 response received: ${toolTurn2.content.length > 0 ? 'YES' : 'NO'}`);
console.log(` Has error: ${hasError3 ? 'YES' : 'NO'}`);
if (hasError3) {
console.log(` Error message: ${errorMsg3}`);
if (errorMsg3 && errorMsg3.includes('cache_control')) {
console.log(' >>> cache_control field NOT stripped properly! <<<');
}
}
const content3b = analyzeContent(toolTurn2.content);
if (content3b.hasText) {
console.log(` Response preview: "${content3b.text[0].text.substring(0, 50)}..."`);
}
const test3Pass = !hasError3 && toolTurn2.content.length > 0;
results.push({ name: 'Tool_result with cache_control', passed: test3Pass });
console.log(` Result: ${test3Pass ? 'PASS' : 'FAIL'}`);
if (!test3Pass) allPassed = false;
}
} catch (err) {
console.log(` ERROR: ${err.message}`);
results.push({ name: 'Tool_result with cache_control', passed: false });
allPassed = false;
}
// ===== Summary =====
console.log('\n' + '='.repeat(60));
console.log(`SUMMARY [${family.toUpperCase()}]`);
console.log('='.repeat(60));
for (const result of results) {
const status = result.skipped ? 'SKIP' : (result.passed ? 'PASS' : 'FAIL');
console.log(` [${status}] ${result.name}`);
}
const passedCount = results.filter(r => r.passed && !r.skipped).length;
const skippedCount = results.filter(r => r.skipped).length;
const totalTests = results.length - skippedCount;
console.log('\n' + '='.repeat(60));
console.log(`[${family.toUpperCase()}] ${allPassed ? 'ALL TESTS PASSED' : 'SOME TESTS FAILED'} (${passedCount}/${totalTests})`);
console.log('='.repeat(60));
return allPassed;
}
async function runTests() {
console.log('');
console.log('='.repeat(60));
console.log('CACHE CONTROL FIELD STRIPPING TEST (Issue #189)');
console.log('='.repeat(60));
console.log('');
console.log('This test verifies that cache_control fields are properly');
console.log('stripped from all content blocks before sending to Cloud Code API.');
console.log('');
const models = await getTestModels();
let allPassed = true;
for (const { family, model } of models) {
console.log('\n');
const passed = await runTestsForModel(family, model);
if (!passed) allPassed = false;
}
console.log('\n' + '='.repeat(60));
console.log('FINAL RESULT');
console.log('='.repeat(60));
console.log(`Overall: ${allPassed ? 'ALL MODEL FAMILIES PASSED' : 'SOME MODEL FAMILIES FAILED'}`);
console.log('='.repeat(60));
process.exit(allPassed ? 0 : 1);
}
runTests().catch(err => {
console.error('Test failed with error:', err);
process.exit(1);
});
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