Units Tests for Appointment (Logic and Storage)

[khoongwk]

Apart from unit tests, some minor changes: modified ModelManager's equals method to compare the other managers and trackers apart from just client manager.

[codecov-io]

Codecov Report

Merging #236 into master will increase coverage by 9.01%.
The diff coverage is 47.61%.

@@             Coverage Diff              @@
##             master     #236      +/-   ##
============================================
+ Coverage     54.33%   63.34%   +9.01%     
- Complexity      977     1113     +136     
============================================
  Files           206      206              
  Lines          3889     3915      +26     
  Branches        452      462      +10     
============================================
+ Hits           2113     2480     +367     
+ Misses         1651     1274     -377     
- Partials        125      161      +36     

Impacted Files	Coverage Δ	Complexity Δ
...commands/appointment/DeleteAppointmentCommand.java	100.00% <ø> (+100.00%)	7.00 <0.00> (+7.00)
...c/commands/appointment/DoneAppointmentCommand.java	90.90% <ø> (+90.90%)	7.00 <0.00> (+7.00)
...c/commands/appointment/ListAppointmentCommand.java	100.00% <ø> (+100.00%)	2.00 <0.00> (+2.00)
...commands/appointment/UnDoneAppointmentCommand.java	83.33% <ø> (+83.33%)	7.00 <0.00> (+7.00)
...rser/appointment/FindAppointmentCommandParser.java	96.42% <ø> (+96.42%)	14.00 <0.00> (+14.00)
...rc/main/java/seedu/homerce/model/ModelManager.java	71.95% <0.00%> (+15.50%)	52.00 <0.00> (+13.00)
...a/seedu/homerce/model/appointment/Appointment.java	91.17% <ø> (+1.47%)	25.00 <0.00> (+1.00)
...edu/homerce/model/appointment/AppointmentTemp.java	65.00% <22.22%> (-35.00%)	7.00 <2.00> (+2.00)	⬇️
...c/commands/appointment/FindAppointmentCommand.java	100.00% <100.00%> (+100.00%)	7.00 <1.00> (+7.00)
.../java/seedu/homerce/model/service/ServiceCode.java	85.71% <100.00%> (-0.96%)	10.00 <1.00> (ø)
... and 31 more

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[hanstirtaputra]

LGTM