Check if database have returned the same object as was passed on schemas. Using jest and node.js only.
Function to compare passed object with pattern, receive two parameters, object to compare(compareObject) and object pattern (objecPattern), so the funcion is check(compareObject, objectPattern).
That function has tree possibles return values, Object, true, false. Object is returned when number of keys doesn't match, the object is used to return two infos, it is pass, to info the situation, as boolean, and type, to info what is the error, in this case the length, as a String
Jest give the expect.extend function, to append new expected functions, is that function used to create the new expected. With that tool was created two functions, checkObject and checkListObjects.
The first function get the check returns and repsonse if that goes wrong or have success. This function have tree returns, all of they is objects with enforced by jest pattern, wrong number of keys, wrong keys and succes.
// Pattern
{
pass: Boolean,
message: () => String
}
// Success
{
pass: true,
message: () => ''
}
// Failed wrong number of keys
{
pass: false,
message: () => `bjects doesnt match
first object keys: ${Object.keys(object1).length}
second object keys: ${Object.keys(object2).length}`
}
// Failed wrong keys
{
pass: false,
message: () => 'Objects doesnt match'
}