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Upgrading to Cerbos 0.14.0

This release introduces matrix tests for policy tests and existing test files require minor changes to be compatible with the new test runner.

input section

  • resource field has been replaced with a list field named resources that must contain one or more resources to use as input to the test.

  • A new list field named principals has been added to define the list of principals to be used as input to the test.

  • requestID field has been removed.

expected section

  • resource is a new, required field that must be populated to indicate which resource is being referred to in the expectation.

  • Only resource and principal combinations that are expected to produce an ALLOW result needs to be defined in the expected section. If no pair is defined, it is assumed to produce a DENY result.

The example below illustrates how to convert an existing test to the new format.

Before Cerbos 0.14.0 After Cerbos 0.14.0 
---
name: AlbumObjectTestSuite
resources:
  alicia_private_album:
    kind: "album:object"
    attr:
      owner: "alicia"
      id: "XX125"
      public: false
      flagged: false

principals:
  alicia:
    id: "alicia"
    roles: ["user"]

  bradley:
    id: "bradley"
    roles: ["user"]

  maria:
    id: "maria"
    roles: ["moderator", "user"]

tests:
  - name: View album
    input:
      actions: ["view"]
      resource: alicia_private_album
    expected:
      - principal: alicia
        actions:
          view: EFFECT_ALLOW

      - principal: bradley
        actions:
          view: EFFECT_DENY

      - principal: maria
        actions:
          view: EFFECT_DENY
yaml
 
---
name: AlbumObjectTestSuite
resources:
  alicia_private_album:
    kind: "album:object"
    attr:
      owner: "alicia"
      id: "XX125"
      public: false
      flagged: false

principals:
  alicia:
    id: "alicia"
    roles: ["user"]

  bradley:
    id: "bradley"
    roles: ["user"]

  maria:
    id: "maria"
    roles: ["moderator", "user"]

tests:
  - name: View album
    input:
      actions: ["view"]
      principals: ["alicia", "bradley", "maria"]
      resources: ["alicia_private_album"]
    expected:
      - principal: alicia
        actions:
          view: EFFECT_ALLOW
yaml