Test code

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Files with missing lines	Coverage Δ	Complexity Δ
.../address/logic/parser/MassRejectCommandParser.java	89.47% <100.00%> (+89.47%)	7.00 <0.00> (+7.00)

... and 11 files with indirect coverage changes