Make external test assignment

Makes an external test assignment for the given student:

• Applies to ‘test-out’, ‘placement’, and ‘unit-test’ lessons.

This logic changes depending on the provided “toolProvider” value:

• For “edulastic”:
  • Authenticates the student with their email on Edulastic
  • Assigns the test to the student in Edulastic
  • Stores the received “assignmentId” and “classId” in the lesson’s AssessmentResult
  • Returns the test link, credentials, and IDs of the test for later results consumption
• For “mastery-track”:
  • Authenticates the student with their email on MasteryTrack
  • Assigns the test to the student in MasteryTrack (using the testId in the request or subject+grade from the lesson’s Resource metadata)
  • Stores the received “assignmentId” in the lesson’s AssessmentResult
  • Returns the test link, credentials, and IDs of the test
  • Waits for a test result write-back to be performed by the MasteryTrack on test end

Will fail if:

• The lesson is not an external “test-out”, “placement”, or “unit-test”, or the student does not exist
• External tool (described in the resource.metadata.toolProvider) is not “edulastic” or “mastery-track”
• Any other problem on the Edulastic or MasteryTrack API being used that may happen

A ‘Lesson’ in this context is a ComponentResource object which has a Resource object with lessonType = “test-out”, “placement”, or “unit-test” associated with it.