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#: @hide_from_man_page
#: * `update-test` [`--commit=<sha1>`] [`--before=<date>`] [`--keep-tmp`]:
#: Runs a test of `brew update` with a new repository clone.
#:
#: If no arguments are passed, use `origin/master` as the start commit.
#:
#: If `--commit=<sha1>` is passed, use `<sha1>` as the start commit.
#:
#: If `--before=<date>` is passed, use the commit at `<date>` as the
#: start commit.
#:
#: If `--keep-tmp` is passed, retain the temporary directory containing
#: the new repository clone.
module Homebrew
def update_test
cd HOMEBREW_REPOSITORY
start_sha1 = if commit = ARGV.value("commit")
commit
elsif date = ARGV.value("before")
Utils.popen_read("git", "rev-list", "-n1", "--before=#{date}", "origin/master").chomp
else
Utils.popen_read("git", "rev-parse", "origin/master").chomp
end
start_sha1 = Utils.popen_read("git", "rev-parse", start_sha1).chomp
end_sha1 = Utils.popen_read("git", "rev-parse", "HEAD").chomp
puts "Start commit: #{start_sha1}"
puts "End commit: #{end_sha1}"
mktemp("update-test") do |staging|
staging.retain! if ARGV.keep_tmp?
curdir = Pathname.new(Dir.pwd)
oh1 "Setup test environment..."
# copy Homebrew installation
safe_system "git", "clone", "--local", "#{HOMEBREW_REPOSITORY}/.git", "."
# set git origin to another copy
safe_system "git", "clone", "--local", "--bare", "#{HOMEBREW_REPOSITORY}/.git", "remote.git"
safe_system "git", "config", "remote.origin.url", "#{curdir}/remote.git"
# force push origin to end_sha1
safe_system "git", "checkout", "--force", "master"
safe_system "git", "reset", "--hard", end_sha1
safe_system "git", "push", "--force", "origin", "master"
# set test copy to start_sha1
safe_system "git", "reset", "--hard", start_sha1
# update ENV["PATH"]
ENV["PATH"] = "#{curdir}/bin:/usr/local/bin:/usr/bin:/bin"
# run brew update
oh1 "Running brew update..."
safe_system "brew", "update", "--verbose"
actual_end_sha1 = Utils.popen_read("git", "rev-parse", "master").chomp
if start_sha1 != end_sha1 && start_sha1 == actual_end_sha1
raise <<-EOS.undent
brew update didn't update master!
Start commit: #{start_sha1}
Expected end commit: #{end_sha1}
Actual end commit: #{actual_end_sha1}
EOS
end
end
end
end
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