What are Jest coverage thresholds and how do I set them?

What are Jest coverage thresholds and how do I set them?

Jest coverage thresholds are limits you can set to ensure your tests cover a certain percentage of your code. You can set them in your Jest configuration.

How do I configure these thresholds in my Jest setup?

You can configure coverage thresholds in your jest.config.js file by adding a coverageThreshold property with the desired values.

Can you give me an example of how to set it up?

Sure! Here's an example:

module.exports = {
  coverageThreshold: {
    global: {
      branches: 80,
      functions: 80,
      lines: 80,
      statements: 80,
    },
  },
};

What happens if my coverage falls below these thresholds?

If your coverage falls below the specified thresholds, Jest will fail the test run, alerting you to the insufficient coverage.