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After running Cypress tests with the code coverage plugin, your coverage report shows 0% coverage. What is the most probable reason?

medium📝 Predict Output Q5 of 15
Cypress - Plugins and Ecosystem
After running Cypress tests with the code coverage plugin, your coverage report shows 0% coverage. What is the most probable reason?
AThe Cypress version is incompatible with the plugin
BThe coverage report file path is incorrect
CThe tests did not execute any assertions
DThe application code was not instrumented before running tests
Step-by-Step Solution
Solution:

  1. Step 1: Understand coverage instrumentation

    Code coverage requires instrumenting the application code to track executed lines.

  2. Step 2: Identify missing instrumentation

    If instrumentation is missing, coverage data will not be collected, resulting in 0% coverage.

  3. Final Answer:

    The application code was not instrumented before running tests -> Option D

  4. Quick Check:

    Instrumentation is essential for coverage data [OK]
Quick Trick: Ensure code is instrumented before tests run [OK]
Common Mistakes:
  • Assuming tests without assertions affect coverage
  • Ignoring instrumentation step
  • Blaming plugin compatibility without checking setup

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