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keg_spec.rb
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keg_spec.rb
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# frozen_string_literal: true
require "keg"
require "stringio"
RSpec.describe Keg do
include FileUtils
def setup_test_keg(name, version)
path = HOMEBREW_CELLAR/name/version
(path/"bin").mkpath
%w[hiworld helloworld goodbye_cruel_world].each do |file|
touch path/"bin"/file
end
keg = described_class.new(path)
kegs << keg
keg
end
let(:dst) { HOMEBREW_PREFIX/"bin"/"helloworld" }
let(:nonexistent) { Pathname.new("/some/nonexistent/path") }
let!(:keg) { setup_test_keg("foo", "1.0") }
let(:kegs) { [] }
before do
(HOMEBREW_PREFIX/"bin").mkpath
(HOMEBREW_PREFIX/"lib").mkpath
end
after do
kegs.each(&:unlink)
rmtree HOMEBREW_PREFIX/"lib"
end
specify "::all" do
expect(described_class.all).to eq([keg])
end
specify "#empty_installation?" do
%w[.DS_Store INSTALL_RECEIPT.json LICENSE.txt].each do |file|
touch keg/file
end
expect(keg).to exist
expect(keg).to be_a_directory
expect(keg).not_to be_an_empty_installation
(keg/"bin").rmtree
expect(keg).to be_an_empty_installation
(keg/"bin").mkpath
touch keg.join("bin", "todo")
expect(keg).not_to be_an_empty_installation
end
specify "#oldname_opt_records" do
expect(keg.oldname_opt_records).to be_empty
oldname_opt_record = HOMEBREW_PREFIX/"opt/oldfoo"
oldname_opt_record.make_relative_symlink(HOMEBREW_CELLAR/"foo/1.0")
expect(keg.oldname_opt_records).to eq([oldname_opt_record])
end
specify "#remove_oldname_opt_records" do
oldname_opt_record = HOMEBREW_PREFIX/"opt/oldfoo"
oldname_opt_record.make_relative_symlink(HOMEBREW_CELLAR/"foo/2.0")
keg.remove_oldname_opt_records
expect(oldname_opt_record).to be_a_symlink
oldname_opt_record.unlink
oldname_opt_record.make_relative_symlink(HOMEBREW_CELLAR/"foo/1.0")
keg.remove_oldname_opt_records
expect(oldname_opt_record).not_to be_a_symlink
end
describe "#link" do
it "links a Keg" do
expect(keg.link).to eq(3)
(HOMEBREW_PREFIX/"bin").children.each do |c|
expect(c.readlink).to be_relative
end
end
context "with dry run set to true" do
let(:options) { { dry_run: true } }
it "only prints what would be done" do
expect do
expect(keg.link(**options)).to eq(0)
end.to output(<<~EOF).to_stdout
#{HOMEBREW_PREFIX}/bin/goodbye_cruel_world
#{HOMEBREW_PREFIX}/bin/helloworld
#{HOMEBREW_PREFIX}/bin/hiworld
EOF
expect(keg).not_to be_linked
end
end
it "fails when already linked" do
keg.link
expect { keg.link }.to raise_error(Keg::AlreadyLinkedError)
end
it "fails when files exist" do
touch dst
expect { keg.link }.to raise_error(Keg::ConflictError)
end
it "ignores broken symlinks at target" do
src = keg/"bin"/"helloworld"
dst.make_symlink(nonexistent)
keg.link
expect(dst.readlink).to eq(src.relative_path_from(dst.dirname))
end
context "with overwrite set to true" do
let(:options) { { overwrite: true } }
it "overwrite existing files" do
touch dst
expect(keg.link(**options)).to eq(3)
expect(keg).to be_linked
end
it "overwrites broken symlinks" do
dst.make_symlink "nowhere"
expect(keg.link(**options)).to eq(3)
expect(keg).to be_linked
end
it "still supports dryrun" do
touch dst
options[:dry_run] = true
expect do
expect(keg.link(**options)).to eq(0)
end.to output(<<~EOF).to_stdout
#{dst}
EOF
expect(keg).not_to be_linked
end
end
it "also creates an opt link" do
expect(keg).not_to be_optlinked
keg.link
expect(keg).to be_optlinked
end
specify "pkgconfig directory is created" do
link = HOMEBREW_PREFIX/"lib"/"pkgconfig"
(keg/"lib"/"pkgconfig").mkpath
keg.link
expect(link.lstat).to be_a_directory
end
specify "cmake directory is created" do
link = HOMEBREW_PREFIX/"lib"/"cmake"
(keg/"lib"/"cmake").mkpath
keg.link
expect(link.lstat).to be_a_directory
end
specify "symlinks are linked directly" do
link = HOMEBREW_PREFIX/"lib"/"pkgconfig"
(keg/"lib"/"example").mkpath
(keg/"lib"/"pkgconfig").make_symlink "example"
keg.link
expect(link.resolved_path).to be_a_symlink
expect(link.lstat).to be_a_symlink
end
end
describe "#unlink" do
it "unlinks a Keg" do
keg.link
expect(dst).to be_a_symlink
expect(keg.unlink).to eq(3)
expect(dst).not_to be_a_symlink
end
it "prunes empty top-level directories" do
mkpath HOMEBREW_PREFIX/"lib/foo/bar"
mkpath keg/"lib/foo/bar"
touch keg/"lib/foo/bar/file1"
keg.unlink
expect(HOMEBREW_PREFIX/"lib/foo").not_to be_a_directory
end
it "ignores .DS_Store when pruning empty directories" do
mkpath HOMEBREW_PREFIX/"lib/foo/bar"
touch HOMEBREW_PREFIX/"lib/foo/.DS_Store"
mkpath keg/"lib/foo/bar"
touch keg/"lib/foo/bar/file1"
keg.unlink
expect(HOMEBREW_PREFIX/"lib/foo").not_to be_a_directory
expect(HOMEBREW_PREFIX/"lib/foo/.DS_Store").not_to exist
end
it "doesn't remove opt link" do
keg.link
keg.unlink
expect(keg).to be_optlinked
end
it "preverves broken symlinks pointing outside the Keg" do
keg.link
dst.delete
dst.make_symlink(nonexistent)
keg.unlink
expect(dst).to be_a_symlink
end
it "preverves broken symlinks pointing into the Keg" do
keg.link
dst.resolved_path.delete
keg.unlink
expect(dst).to be_a_symlink
end
it "preverves symlinks pointing outside the Keg" do
keg.link
dst.delete
dst.make_symlink(Pathname.new("/bin/sh"))
keg.unlink
expect(dst).to be_a_symlink
end
it "preserves real files" do
keg.link
dst.delete
touch dst
keg.unlink
expect(dst).to be_a_file
end
it "ignores nonexistent file" do
keg.link
dst.delete
expect(keg.unlink).to eq(2)
end
it "doesn't remove links to symlinks" do
a = HOMEBREW_CELLAR/"a"/"1.0"
b = HOMEBREW_CELLAR/"b"/"1.0"
(a/"lib"/"example").mkpath
(a/"lib"/"example2").make_symlink "example"
(b/"lib"/"example2").mkpath
a = described_class.new(a)
b = described_class.new(b)
a.link
lib = HOMEBREW_PREFIX/"lib"
expect(lib.children.length).to eq(2)
expect { b.link }.to raise_error(Keg::ConflictError)
expect(lib.children.length).to eq(2)
end
# This is a legacy violation that would benefit from a clear expectation.
# rubocop:disable RSpec/NoExpectationExample
it "removes broken symlinks that conflict with directories" do
a = HOMEBREW_CELLAR/"a"/"1.0"
(a/"lib"/"foo").mkpath
keg = described_class.new(a)
link = HOMEBREW_PREFIX/"lib"/"foo"
link.parent.mkpath
link.make_symlink(nonexistent)
keg.link
end
# rubocop:enable RSpec/NoExpectationExample
end
describe "#optlink" do
it "creates an opt link" do
oldname_opt_record = HOMEBREW_PREFIX/"opt/oldfoo"
oldname_opt_record.make_relative_symlink(HOMEBREW_CELLAR/"foo/1.0")
keg_record = HOMEBREW_CELLAR/"foo"/"2.0"
(keg_record/"bin").mkpath
keg = described_class.new(keg_record)
keg.optlink
expect(keg_record).to eq(oldname_opt_record.resolved_path)
keg.uninstall
expect(oldname_opt_record).not_to be_a_symlink
end
it "doesn't fail if already opt-linked" do
keg.opt_record.make_relative_symlink Pathname.new(keg)
keg.optlink
expect(keg).to be_optlinked
end
it "replaces an existing directory" do
keg.opt_record.mkpath
keg.optlink
expect(keg).to be_optlinked
end
it "replaces an existing file" do
keg.opt_record.parent.mkpath
keg.opt_record.write("foo")
keg.optlink
expect(keg).to be_optlinked
end
end
specify "#link and #unlink" do
expect(keg).not_to be_linked
keg.link
expect(keg).to be_linked
keg.unlink
expect(keg).not_to be_linked
end
end