bash functions to run recently changed unit and functional tests in openstack/nova

unit.sh

function _unit_staged(){                                                        
    touched_tests=$(git diff --cached --name-only | grep tests\/unit)           
    tests=""                                                                    
    for test in $touched_tests; do t=$(echo $test | sed 's/\//\./g' | sed 's/\.py//g'); tests+=" ${t}"; done
    tox -e py27 $tests                                                          
}                                                                               
                                                                                
function _unit_last(){                                                             
    touched_tests=$(git diff-tree --no-commit-id --name-only -r HEAD | grep tests\/unit)
    tests=""                                                                    
    for test in $touched_tests; do t=$(echo $test | sed 's/\//\./g' | sed 's/\.py//g'); tests+=" ${t}"; done
    tox -e py37 $tests                                                          
}                                                                               
                                                                                
function _unit_last27(){                                                         
    touched_tests=$(git diff-tree --no-commit-id --name-only -r HEAD | grep tests\/unit)
    tests=""                                                                    
    for test in $touched_tests; do t=$(echo $test | sed 's/\//\./g' | sed 's/\.py//g'); tests+=" ${t}"; done
    tox -e py27 $tests                                                          
}                                                                               
                                                                                
function _func_last(){                                                          
    touched_tests=$(git diff-tree --no-commit-id --name-only -r HEAD | grep tests\/functional)
    tests=""                                                                    
    for test in $touched_tests; do t=$(echo $test | sed 's/\//\./g' | sed 's/\.py//g'); tests+=" ${t}"; done
    tox -e functional $tests                                                    
}                                                                               
                                                                                
function _func36_last(){                                                         
    touched_tests=$(git diff-tree --no-commit-id --name-only -r HEAD | grep tests\/functional)
    tests=""                                                                    
    for test in $touched_tests; do t=$(echo $test | sed 's/\//\./g' | sed 's/\.py//g'); tests+=" ${t}"; done
    tox -e functional-py36 $tests                                               
}                                                                               
                                                                                
function _test_last(){                                                          
    _func_last && _unit_last                                                    
}