You tried running Cypress tests in parallel but noticed tests are not splitting across machines. What is the most likely cause?

medium📝 Debug Q14 of 15

Cypress - CI/CD and Reporting

ATests are not independent and share state, preventing parallel splitting.

BYou forgot to install Cypress Dashboard locally.

CThe command used was <code>cypress open --parallel</code> instead of <code>cypress run --parallel</code>.

DParallel execution requires tests to be written in JavaScript only.

Step-by-Step Solution

Solution:

Step 1: Understand requirements for parallel splitting
Tests must be independent (no shared state) to split correctly across machines in parallel execution.
Step 2: Identify the cause of no splitting
If tests share state or depend on each other, Cypress cannot split them properly, causing all tests to run on one machine.
Final Answer:
The command used was cypress open --parallel instead of cypress run --parallel. -> Option C
Quick Check:
Use 'cypress run' for parallel splitting [OK]

Quick Trick: Tests must be independent to split in parallel [OK]

Common Mistakes:

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