Shorten brew tests temporary paths.

If you have `HOMEBREW_TEMP` set to a longer path (e.g. the user's
private temporary directory rather than `/private/tmp`), Sequoia will
error out on some tests when forking because the path is too long
(> 104 bytes).

To improve this situation let's:
- use a shorter path for `HOMEBREW_TEMP` by appending `/brew-tests` to
  the existing `HOMEBREW_TEMP` used outside of tests rather than
  creating nested temporary directories
- use the minimal amount of randomness to avoid collisions while
  allowing parallel tests
- use `squeeze` to remove any double slashes in the temporary path
This commit is contained in:
Mike McQuaid 2024-09-24 10:12:46 +01:00
parent 73e521ec59
commit 27fb07c0fc
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@ -5,8 +5,9 @@ raise "HOMEBREW_BREW_FILE was not exported! Please call bin/brew directly!" unle
HOMEBREW_BREW_FILE = Pathname.new(ENV.fetch("HOMEBREW_BREW_FILE")).freeze
homebrew_temp = ENV.fetch("HOMEBREW_TEMP")
TEST_TMPDIR = ENV.fetch("HOMEBREW_TEST_TMPDIR") do |k|
dir = Dir.mktmpdir("homebrew-tests-", ENV.fetch("HOMEBREW_TEMP"))
dir = Dir.mktmpdir("homebrew-tests-", homebrew_temp)
at_exit do
# Child processes inherit this at_exit handler, but we don't want them
# to clean TEST_TMPDIR up prematurely (i.e. when they exit early for a test).
@ -15,6 +16,13 @@ TEST_TMPDIR = ENV.fetch("HOMEBREW_TEST_TMPDIR") do |k|
ENV[k] = dir
end.freeze
# Use a shorter HOMEBREW_TEMP path so Sequoia doesn't error out as often on long paths (> 104 bytes).
# Use the minimal amount of randomness to avoid collisions while allowing parallel tests.
require "securerandom"
random_hex = SecureRandom.hex(1)
HOMEBREW_TEMP = Pathname("#{homebrew_temp}/brewtests#{random_hex}".squeeze("/")).freeze
HOMEBREW_TEMP.mkpath
# Paths pointing into the Homebrew code base that persist across test runs
HOMEBREW_SHIMS_PATH = (HOMEBREW_LIBRARY_PATH/"shims").freeze
@ -32,7 +40,6 @@ HOMEBREW_PINNED_KEGS = (HOMEBREW_PREFIX.parent/"pinned").freeze
HOMEBREW_LOCKS = (HOMEBREW_PREFIX.parent/"locks").freeze
HOMEBREW_CELLAR = (HOMEBREW_PREFIX.parent/"cellar").freeze
HOMEBREW_LOGS = (HOMEBREW_PREFIX.parent/"logs").freeze
HOMEBREW_TEMP = (HOMEBREW_PREFIX.parent/"temp").freeze
HOMEBREW_TAP_DIRECTORY = (HOMEBREW_LIBRARY/"Taps").freeze
HOMEBREW_RUBY_EXEC_ARGS = [
RUBY_PATH,