eslint-plugin-jest/lib/rules/no-test-prefixes.js

Eslint rules for Jest

'use strict';

const _require = require('./util'),
      getDocsUrl = _require.getDocsUrl,
      getNodeName = _require.getNodeName,
      isTestCase = _require.isTestCase,
      isDescribe = _require.isDescribe;

module.exports = {
  meta: {
    docs: {
      url: getDocsUrl(__filename)
    },
    messages: {
      usePreferredName: 'Use "{{ preferredNodeName }}" instead'
    },
    fixable: 'code'
  },

  create(context) {
    return {
      CallExpression(node) {
        const nodeName = getNodeName(node.callee);
        if (!isDescribe(node) && !isTestCase(node)) return;
        const preferredNodeName = getPreferredNodeName(nodeName);
        if (!preferredNodeName) return;
        context.report({
          messageId: 'usePreferredName',
          node: node.callee,
          data: {
            preferredNodeName
          },

          fix(fixer) {
            return [fixer.replaceText(node.callee, preferredNodeName)];
          }

        });
      }

    };
  }

};

function getPreferredNodeName(nodeName) {
  const firstChar = nodeName.charAt(0);

  if (firstChar === 'f') {
    return `${nodeName.slice(1)}.only`;
  }

  if (firstChar === 'x') {
    return `${nodeName.slice(1)}.skip`;
  }
}