Automating Repetitive Test Tasks | Dataford Interview Questions

As part of QA automation for an Alnylam Amvuttra workflow, a test runner records whether each expected result matches the observed result. Write a function that scans the records and returns the IDs of all failed test cases in their original execution order.

A test case passes when expected equals actual. It fails otherwise.

Formal Specification

Implement collect_failed_tests(results).

Input: results, a list of dictionaries. Each dictionary contains three strings: id, expected, and actual.
Output: Return a list of test case ID strings whose expected and actual values differ.
Do not modify the input list or its dictionaries.

Constraints

0 <= len(results) <= 10^5
Every record contains nonempty string values for id, expected, and actual
Test case IDs are unique
Comparisons are case-sensitive

Function Signature

def collect_failed_tests(results):

Your question is Automating Repetitive Test Tasks. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.

Problem