Function: unstake()

User fully withdraws all their stakes if called before the end of the collection cycle. All issue indexes that are connected to the caller are fetched from memory, and then each issue is fetched from storage. All stores that have the isStaking flag set are summed up, and the flag is set to false.

The summed-up amount is transferred to the caller and also removed from the global pendingLiquidation counter.

Branches and code coverage

Intended branches

• User can stake and unstake.

  Test coverage

• Unstaking multiple times has no effect.

  Test coverage

Negative behavior

• American users cannot unstake.

  Negative test

• Stakes older than indexStar cannot be unstaked.

  Negative test