Fixed the bvt streams tests

[yitam]

This change is 

[coveralls]

Coverage remained the same at 74.697% when pulling 9e8d674 on yitam:FixStreamTests into 8f5c706 on Microsoft:dev.

[codecov-io]

Codecov Report

Merging #782 into dev will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##              dev     #782   +/-   ##
=======================================
  Coverage   80.06%   80.06%           
=======================================
  Files          25       25           
  Lines        7323     7323           
=======================================
  Hits         5863     5863           
  Misses       1460     1460

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[david-puglielli]

Wasn't there another error in one test where t output 'Done' instead of another message, and that test failed? I think the test was fine, just the output was different from expected.

[yitam]

yes @david-puglielli I've already fixed that expected output without creating a pull request 👍