Add test fixtures for ELF executables

Add test/support/fixtures/elf/
and test/support/fixtures/tarballs/testball-0.1-linux.tbz

Library/Homebrew/test/cleaner_spec.rb

@@ -12,7 +12,7 @@ describe Cleaner do
   end
 
   describe "#clean" do
-    it "cleans files" do
+    it "cleans files", :needs_macos do
       f.bin.mkpath
       f.lib.mkpath
       cp "#{TEST_FIXTURE_DIR}/mach/a.out", f.bin
@@ -26,6 +26,18 @@ describe Cleaner do
       expect((f.lib/"i386.dylib").stat.mode).to eq(0100444)
     end
 
+    it "cleans files", :needs_linux do
+      f.bin.mkpath
+      f.lib.mkpath
+      cp "#{TEST_FIXTURE_DIR}/elf/hello", f.bin
+      cp Dir["#{TEST_FIXTURE_DIR}/elf/libhello.so.0"], f.lib
+
+      subject.clean
+
+      expect((f.bin/"hello").stat.mode).to eq(0100555)
+      expect((f.lib/"libhello.so.0").stat.mode).to eq(0100555)
+    end
+
     it "prunes the prefix if it is empty" do
       subject.clean
       expect(f.prefix).not_to be_a_directory

Library/Homebrew/test/cmd/install_spec.rb

@@ -71,7 +71,7 @@ describe "brew install", :integration_test do
 
       devel do
         url "#{Formulary.factory("testball1").stable.url}"
-        sha256 "#{TESTBALL_SHA256}"
+        sha256 "#{Formulary.factory("testball1").stable.checksum.hexdigest}"
         version "3.0"
       end
     EOS

Library/Homebrew/test/spec_helper.rb

@@ -61,6 +61,10 @@ RSpec.configure do |config|
     skip "Needs official command Taps." unless ENV["HOMEBREW_TEST_OFFICIAL_CMD_TAPS"]
   end
 
+  config.before(:each, :needs_linux) do
+    skip "Not on Linux." unless OS.linux?
+  end
+
   config.before(:each, :needs_macos) do
     skip "Not on macOS." unless OS.mac?
   end

Library/Homebrew/test/support/helper/spec/shared_context/integration_test.rb

@@ -123,11 +123,16 @@ RSpec.shared_context "integration test" do
   def setup_test_formula(name, content = nil)
     case name
     when /^testball/
+      tarball = if OS.linux?
+        TEST_FIXTURE_DIR/"tarballs/testball-0.1-linux.tbz"
+      else
+        TEST_FIXTURE_DIR/"tarballs/testball-0.1.tbz"
+      end
       content = <<~EOS
         desc "Some test"
         homepage "https://example.com/#{name}"
-        url "file://#{TEST_FIXTURE_DIR}/tarballs/testball-0.1.tbz"
-        sha256 "#{TESTBALL_SHA256}"
+        url "file://#{tarball}"
+        sha256 "#{tarball.sha256}"
 
         option "with-foo", "Build with foo"
 

Library/Homebrew/test/support/lib/config.rb

@@ -35,7 +35,6 @@ HOMEBREW_TEMP          = HOMEBREW_PREFIX.parent+"temp"
 
 TEST_FIXTURE_DIR = HOMEBREW_LIBRARY_PATH.join("test", "support", "fixtures")
 
-TESTBALL_SHA1 = "be478fd8a80fe7f29196d6400326ac91dad68c37".freeze
 TESTBALL_SHA256 = "91e3f7930c98d7ccfb288e115ed52d06b0e5bc16fec7dce8bdda86530027067b".freeze
 TESTBALL_PATCHES_SHA256 = "799c2d551ac5c3a5759bea7796631a7906a6a24435b52261a317133a0bfb34d9".freeze
 PATCH_A_SHA256 = "83404f4936d3257e65f176c4ffb5a5b8d6edd644a21c8d8dcc73e22a6d28fcfa".freeze