Fix tests

[j-maas]

Just some quick and naive fixes to make the tests pass.

[codecov]

Codecov Report

Merging #14 into master will decrease coverage by 0.21%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master      #14      +/-   ##
==========================================
- Coverage   99.68%   99.46%   -0.22%     
==========================================
  Files          11       11              
  Lines         939      941       +2     
==========================================
  Hits          936      936              
- Misses          3        5       +2

Impacted Files	Coverage Δ
ptbtest/usergenerator.py	100% <ø> (ø)	⬆️
ptbtest/mockbot.py	99.48% <100%> (ø)	⬆️
ptbtest/messagegenerator.py	99.28% <0%> (-0.72%)	⬇️

---

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[codecov]

Codecov Report

Merging #14 into master will decrease coverage by 0.21%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master      #14      +/-   ##
==========================================
- Coverage   99.68%   99.46%   -0.22%     
==========================================
  Files          11       11              
  Lines         939      941       +2     
==========================================
  Hits          936      936              
- Misses          3        5       +2

Impacted Files	Coverage Δ
ptbtest/usergenerator.py	100% <ø> (ø)	⬆️
ptbtest/mockbot.py	99.48% <100%> (ø)	⬆️
ptbtest/messagegenerator.py	99.28% <0%> (-0.72%)	⬇️

---

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 5d931aa...bca2e2b. Read the comment docs.

[j-maas]

The build only fails on Python 2.7 and PyPI. I have added an __init__.py to PtbMock which I hope solves the issue, but of course this doesn't trigger a rebuild here. @Eldinnie, could you prompt Travis to rebuild, please?

[Bibo-Joshi]

Hi. I'm notifying everyone who PRed to this repo about #21.