[WIP] Add tests for HeapDumper

[sharwell]

:memo: This is a work in progress.

[codecov-io]

Codecov Report

Merging #338 into master will increase coverage by 0.36%. The diff coverage is 76.47%.

@@            Coverage Diff             @@
##           master     #338      +/-   ##
==========================================
+ Coverage   16.29%   16.66%   +0.36%     
==========================================
  Files         198      200       +2     
  Lines      112699   112724      +25     
  Branches    11244    11244              
==========================================
+ Hits        18368    18784     +416     
+ Misses      93537    93087     -450     
- Partials      794      853      +59

Flag	Coverage Δ
#2017	16.66% <76.47%> (+0.36%)	:arrow_up:
#Debug	16.66% <76.47%> (+0.36%)	:arrow_up:
#Release	?

Impacted Files	Coverage Δ
src/PerfView/memory/HeapSnapshot.cs	26.04% <ø> (+26.04%)	:arrow_up:
src/PerfView/Properties/BuildDateAttribute.cs	0% <0%> (ø)
src/PerfView/App.cs	5.37% <0%> (+2.63%)	:arrow_up:
src/PerfView.Tests/Utilities/PerfViewTestBase.cs	95.52% <100%> (+3.09%)	:arrow_up:
src/PerfView.Tests/Memory/HeapDumperTests.cs	95.83% <95.83%> (ø)
src/PerfView/PerfViewEventSource.cs	10% <0%> (+2%)	:arrow_up:
... and 6 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update a67d0e5...29ac645. Read the comment docs.