Add tests for View Commands

[vanGoghhh]

Closes #265

[codecov-io]

Codecov Report

Merging #290 into master will increase coverage by 2.14%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master     #290      +/-   ##
============================================
+ Coverage     75.36%   77.50%   +2.14%     
- Complexity      957      981      +24     
============================================
  Files           137      137              
  Lines          2703     2703              
  Branches        340      340              
============================================
+ Hits           2037     2095      +58     
+ Misses          572      522      -50     
+ Partials         94       86       -8     

Impacted Files	Coverage Δ	Complexity Δ
.../java/seedu/address/storage/JsonAdaptedPerson.java	100.00% <0.00%> (+2.50%)	23.00% <0.00%> (+1.00%)
.../address/logic/parser/FindPersonCommandParser.java	98.57% <0.00%> (+4.28%)	17.00% <0.00%> (+1.00%)
.../seedu/address/logic/parser/AddressBookParser.java	100.00% <0.00%> (+5.26%)	25.00% <0.00%> (+1.00%)
...rc/main/java/seedu/address/model/ModelManager.java	98.90% <0.00%> (+8.79%)	41.00% <0.00%> (+4.00%)
...edu/address/logic/parser/FindJobCommandParser.java	91.66% <0.00%> (+31.66%)	15.00% <0.00%> (+5.00%)
...edu/address/logic/parser/ViewJobCommandParser.java	100.00% <0.00%> (+50.00%)	2.00% <0.00%> (ø%)
.../address/logic/parser/ViewPersonCommandParser.java	100.00% <0.00%> (+50.00%)	2.00% <0.00%> (ø%)
...a/seedu/address/logic/commands/ViewJobCommand.java	100.00% <0.00%> (+75.00%)	7.00% <0.00%> (+6.00%)
...eedu/address/logic/commands/ViewPersonCommand.java	100.00% <0.00%> (+75.00%)	7.00% <0.00%> (+6.00%)

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[g-erm]

Looking good!