Parse and Validate Test Logs | Dataford Interview Questions

Write a function in Python or Go to parse and validate complex test execution logs under strict performance constraints.

Use Python. The input is one newline-delimited string, with records formatted as timestamp EVENT id [message_or_status]; valid events are START_SUITE, END_SUITE, START_TEST, END_TEST, and LOG. Return True only when timestamps are nondecreasing, identifiers are valid and unique, nesting is correct, closing identifiers and statuses are valid, and the entire log closes cleanly; otherwise return False. LOG records must target the currently open frame.

Constraints

1 <= number of lines <= 5000
Each timestamp is a nonnegative decimal integer
Identifiers contain only letters, digits, underscores, and hyphens
Identifiers are unique across all START events
A log starts with START_SUITE and ends after the root suite closes
LOG messages are nonempty and may contain spaces
Closing statuses are exactly PASS or FAIL

Function Signature

def validate_execution_log(log_text):

Your question is Parse and Validate Test Logs. 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

Write a function in Python or Go to parse and validate complex test execution logs under strict performance constraints.

Constraints

1 <= number of lines <= 5000
Each timestamp is a nonnegative decimal integer
Identifiers contain only letters, digits, underscores, and hyphens
Identifiers are unique across all START events
A log starts with START_SUITE and ends after the root suite closes
LOG messages are nonempty and may contain spaces
Closing statuses are exactly PASS or FAIL

Function Signature

def validate_execution_log(log_text):

Your question is Parse and Validate Test Logs. 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.