fix(mock): falsy examples were ignored

[javiergarmon]

Status

READY

Description

Properties with falsy examples (like a boolean with false or a nullable prop with null) didn't generate the mock with those examples and put a faker boolean call instead. This PR take into account those values.

Related PRs

None

Todos

• Tests
• Documentation
• Changelog Entry (unreleased)

Steps to Test or Reproduce

Test were added. Anyway, just a property like this reproduces the error:

"isEnabled": {
  "type": "boolean",
  "example": false
},