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Question 86 of 100
Error Handling & Debugging
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Q86: How Do You Debug API Failures in Postman?
🐛Core Concept
How Do You Debug API Failures in Postman?
Key Takeaways & Architecture Summary
- ✓Open the Postman Console window (Alt + Ctrl + C).
- ✓Inspect outbound request headers, payloads, and SSL handshakes.
- ✓Add console.log() statements inside pre-request or test scripts.
Direct Answer Summary
To debug API failures in Postman, you open the built-in Postman Console to inspect full network exchanges (including request headers, SSL details, and payload streams). You then write `console.log()` statements inside your scripts to inspect variable states and try-catch blocks.
⚠️ Senior Engineering Warning (Red Flag)
Do not rely on the simple response pane when debugging complex failures. The response pane only displays final outputs; the Postman Console shows full redirect histories and raw network packets.
💡 STAR Architectural Explanation & Pro Tip
The Console captures all logs and console calls, separating network details from script assertions and making it the primary hub for debugging dynamic failures.
RestAssuredTest.java
Rest-Assured + Java// Debugging script: Log raw payload objects to the console
try {
const data = pm.response.json();
console.log("Raw Response Payload: ", data);
} catch (e) {
console.error("Payload is not a valid JSON string: ", pm.response.text());
}