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December 28, 2015 11:19
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A Ruby script that runs tests with Pants for all projects that have been modified in the current working tree.
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#!/usr/bin/env ruby | |
# | |
# Run tests for all projects that have been modified in the Birdcage, | |
# relative to HEAD. | |
# | |
# For example, if you've edited files in three projects, this script will | |
# run tests serially for these three projects in one command. | |
print "Determining which files have been changed..." | |
$stdout.flush | |
birdcage_root=File.expand_path("../../", __FILE__) | |
test_targets = [] | |
changed_files = `git status --porcelain`.split("\n").map do |line| | |
line[3..-1] | |
end | |
# Run through all changed files, picking out their corresponding | |
# BUILD:tests targets. | |
changed_files.each do |changed_file| | |
# Backtrack from the source file, hunting for the maximally-deep BUILD | |
# file containing a 'tests' target. | |
path_elements = changed_file.split('/') | |
path_elements.each_index do |i| | |
prefix = path_elements[0..(path_elements.size-1-i)] | |
build_files = Dir["#{prefix.join('/')}/**/BUILD"].select do |build_file| | |
found = `#{birdcage_root}/pants goal filter #{build_file}:: --filter-type=junit_tests 2> /dev/null`.split("\n") | |
unless found.empty? | |
test_targets += found | |
break | |
end | |
end | |
end | |
end | |
puts " Done." | |
if test_targets.empty? | |
puts "Working directory is clean. No tests to run." | |
else | |
test_targets.each do |test_target| | |
puts "Running tests at #{test_target}" | |
# `Kernel.system` captures SIGINT for subshells only, so we set a trap to | |
# explicitly exit when a user hits ^C. | |
unless system("#{birdcage_root}/pants goal test #{test_target}") | |
exit $?.exitstatus | |
end | |
end | |
end |
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