Mocking Courses

Front-End First: Testing and Prototyping JavaScript Apps
Pluralsight

Testing Cloud Apps - Mocks vs. Service Virtualization vs. Remote Tools
CNCF [Cloud Native Computing Foundation] via YouTube

MOQ
Board Infinity via Coursera

Zephyr Application Development Using TDD - Getting Started
Linux Foundation via YouTube

PHPUnit: Integration Testing with Live Services
SymfonyCasts

PHPUnit: Unit Testing with a Bite!
SymfonyCasts

phpspec: Testing... *Designing* with a Bite
SymfonyCasts

PHPUnit (Legacy): Testing with a Bite
SymfonyCasts

Mastering Java Testing With JUnit, Mockito, and AssertJ in IntelliJ IDEA
JetBrains via YouTube

React Testing Tutorial
YouTube