Mock function creation

Mock call verification

Mock argument inspection

Mock call history

toBe for primitives

toBe for references

toEqual for deep equality

toStrictEqual for strict checks

Correct negation usage

Uses test.each

Template literal syntax

Table structure

Interpolated values

Parameterized test name

Correct test function

Jest CLI Integration

Failure Filtering Implementation

Change-Based Filtering Implementation

Test History Tracking

Configuration Pass-Through

Test Result Parsing

expect.extend usage

Matcher return structure

Matcher context access

Error message formatting

Range validation logic

Uses mockClear()

Uses mockReset()

Uses mockRestore()

Batch clear implementation

Batch reset implementation

Done callback parameter

Calling done correctly

Error handling with done

Assertions before done

Timeout configuration

Uses .resolves matcher

Uses .rejects matcher

Verifies resolved data

Verifies rejection errors

Tests multiple scenarios

Uses jest.retryTimes

Basic retry count

Different retry counts

Retry scope placement

Uses snapshot matchers

Wraps in expect callback

Tests all error cases

Proper test structure