karma-coverage

Coverage Reporting

This feature allows you to generate coverage reports in various formats such as HTML, LCOV, and JSON. The code sample shows how to configure Karma to use the karma-coverage plugin to generate an HTML coverage report.

module.exports = function(config) {
  config.set({
    // other Karma configuration...
    reporters: ['progress', 'coverage'],
    preprocessors: {
      '**/*.js': ['coverage']
    },
    coverageReporter: {
      type : 'html',
      dir : 'coverage/'
    }
  });
};

Threshold Enforcement

This feature allows you to enforce coverage thresholds. If the code does not meet the specified thresholds for statements, branches, functions, or lines, Karma will exit with an error. The code sample demonstrates how to set these thresholds in the Karma configuration.

module.exports = function(config) {
  config.set({
    // other Karma configuration...
    reporters: ['progress', 'coverage'],
    coverageReporter: {
      check: {
        global: {
          statements: 80,
          branches: 80,
          functions: 80,
          lines: 80
        }
      }
    }
  });
};