add to minter tests

Feature Merge Request

Related Issue

part1 (of 3): resolves #45 (closed)

This MR originated from !31 (closed)

Description of Feature

Add missing tests for code branches, as highlighted in our code coverage web tool. Examples of missing tests include else cases of some if conditionals, cases in which require or assert conditions are not met, etc.

Related Tasks

• add to test/stealStake.js
• add to test/basicAssessment.js

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