Codemod madness

transform_assert_that_to_expect.js

module.exports = (fileInfo, api) => {
  const j = api.jscodeshift;

  return j(fileInfo.source)
    .find(j.CallExpression, {
        callee: {
          type: 'MemberExpression',
          object: {
            type: 'Identifier',
            name: 'assert',
          },
          property: { name: 'that' },
        },
      }
    )
    .replaceWith(cosa => j.callExpression(j.identifier('expect'), cosa.value.arguments))
    .toSource();
};

transform_is_true.js

module.exports = (fileInfo, api) => {
  const j = api.jscodeshift;

  return j(fileInfo.source)
    .find(j.CallExpression, {
        callee: {
          type: 'MemberExpression',
          object: {
            type: 'Identifier',
            name: 'assert',
          },
          property: { name: 'isTrue' },
        },
      }
    )
    .replaceWith(cosa =>
      j.callExpression(
        {
          type: 'MemberExpression',
          object: j.callExpression(j.identifier('expect'), cosa.value.arguments),
          property: 'toEqual'
        },
        [ j.identifier('true') ]
      )
    )
    .toSource();
};

transform_suite_to_describe.js

module.exports = (fileInfo, api) => {
  const j = api.jscodeshift;

  return j(fileInfo.source)
    .find(j.Identifier, { name: 'suite' })
    .replaceWith(cosa => {
      cosa.value.name = "describe"
      return cosa.value
    })
    .toSource();
};

transform_to_equal.js

module.exports = (fileInfo, api) => {
  const j = api.jscodeshift;

  return j(fileInfo.source)
    .find(j.CallExpression, {
        callee: {
          type: 'MemberExpression',
          property: { name: 'isEqualTo' },
        },
      }
    )
    .replaceWith(cosa => {
      cosa.value.callee.property.name = "toEqual"
      return cosa.value
    })
    .toSource();
};