test: add some tests for -a and -o
Merge pull request #423 from Arcterus/test-tests

test: add some tests for -a and -o
tee: fix build
uniq: fix build
Merge pull request #424 from ebfe/fix-build-master

tee: fix build
Drop BigInt support from test
Merge pull request #425 from ebfe/test

Drop BigInt support from test