[rubygems/rubygems] Refactor ruby command line building for tests

rubygems/rubygems@43819b6973

lib/rubygems/test_case.rb

@@ -1260,6 +1260,10 @@ def self.rubybin
     end
   end
 
+  def ruby_with_rubygems_in_load_path
+    [Gem.ruby, "-I", File.expand_path("..", __dir__)]
+  end
+
   def with_clean_path_to_ruby
     orig_ruby = Gem.ruby
 

test/rubygems/test_gem.rb

@@ -311,7 +311,7 @@ def test_activate_bin_path_in_debug_mode
 
     output, status = Open3.capture2e(
       { "GEM_HOME" => Gem.paths.home, "DEBUG_RESOLVER" => "1" },
-      Gem.ruby, "-I", File.expand_path("../../lib", __dir__), "-e", "\"Gem.activate_bin_path('a', 'exec', '>= 0')\""
+      *ruby_with_rubygems_in_load_path, "-e", "\"Gem.activate_bin_path('a', 'exec', '>= 0')\""
     )
 
     assert status.success?, output
@@ -1637,7 +1637,6 @@ def test_auto_activation_of_used_gemdeps_file
     assert_equal expected_specs, Gem.use_gemdeps.sort_by { |s| s.name }
   end
 
-  LIB_PATH = File.expand_path "../../../lib", __FILE__
   BUNDLER_LIB_PATH = File.expand_path $LOAD_PATH.find {|lp| File.file?(File.join(lp, "bundler.rb")) }
   BUNDLER_FULL_NAME = "bundler-#{Bundler::VERSION}".freeze
 
@@ -1665,7 +1664,7 @@ def test_looks_for_gemdeps_files_automatically_on_start
     ENV['RUBYGEMS_GEMDEPS'] = "-"
 
     path = File.join @tempdir, "gem.deps.rb"
-    cmd = [Gem.ruby, "-I#{LIB_PATH}",
+    cmd = [*ruby_with_rubygems_in_load_path,
            "-I#{BUNDLER_LIB_PATH}"]
     cmd << "-eputs Gem.loaded_specs.values.map(&:full_name).sort"
 
@@ -1703,7 +1702,7 @@ def test_looks_for_gemdeps_files_automatically_on_start_in_parent_dir
     Dir.mkdir "sub1"
 
     path = File.join @tempdir, "gem.deps.rb"
-    cmd = [Gem.ruby, "-Csub1", "-I#{LIB_PATH}",
+    cmd = [*ruby_with_rubygems_in_load_path, "-Csub1",
            "-I#{BUNDLER_LIB_PATH}"]
     cmd << "-eputs Gem.loaded_specs.values.map(&:full_name).sort"
 

test/rubygems/test_gem_util.rb

@@ -6,7 +6,7 @@ class TestGemUtil < Gem::TestCase
 
   def test_class_popen
     skip "popen with a block does not behave well on jruby" if Gem.java_platform?
-    assert_equal "0\n", Gem::Util.popen(Gem.ruby, '-I', File.expand_path('../../../lib', __FILE__), '-e', 'p 0')
+    assert_equal "0\n", Gem::Util.popen(*ruby_with_rubygems_in_load_path, '-e', 'p 0')
 
     assert_raises Errno::ECHILD do
       Process.wait(-1)
@@ -16,7 +16,7 @@ def test_class_popen
   def test_silent_system
     skip if Gem.java_platform?
     assert_silent do
-      Gem::Util.silent_system Gem.ruby, '-I', File.expand_path('../../../lib', __FILE__), '-e', 'puts "hello"; warn "hello"'
+      Gem::Util.silent_system(*ruby_with_rubygems_in_load_path, '-e', 'puts "hello"; warn "hello"')
     end
   end
 

test/rubygems/test_kernel.rb

@@ -98,9 +98,7 @@ def test_gem_failing_inside_require_doesnt_cause_double_exceptions
 
     output, _ = Open3.capture2e(
       { "GEM_HOME" => Gem.paths.home },
-      Gem.ruby,
-      "-I",
-      File.expand_path("../../lib", __dir__),
+      *ruby_with_rubygems_in_load_path,
       "-r",
       "./activate.rb"
     )

test/rubygems/test_require.rb

@@ -391,8 +391,7 @@ def test_realworld_default_gem
       require "json"
       puts Gem.loaded_specs["json"]
     RUBY
-    rubygems_libdir = File.expand_path('../../../lib', __FILE__)
-    output = Gem::Util.popen(Gem.ruby, "-I#{rubygems_libdir}", "-e", cmd).strip
+    output = Gem::Util.popen(*ruby_with_rubygems_in_load_path, "-e", cmd).strip
     refute_empty output
   end
 
@@ -519,31 +518,29 @@ def test_require_bundler_with_bundler_version
   if RUBY_VERSION >= "2.5"
     ["", "Kernel."].each do |prefix|
       define_method "test_no_kernel_require_in_#{prefix.tr(".", "_")}warn_with_uplevel" do
-        lib = File.realpath("../../../lib", __FILE__)
         Dir.mktmpdir("warn_test") do |dir|
           File.write(dir + "/sub.rb", "#{prefix}warn 'uplevel', 'test', uplevel: 1\n")
           File.write(dir + "/main.rb", "require 'sub'\n")
           _, err = capture_subprocess_io do
-            system(Gem.ruby, "-w", "--disable=gems", "-I", lib, "-C", dir, "-I.", "main.rb")
+            system(*ruby_with_rubygems_in_load_path, "-w", "--disable=gems", "-C", dir, "-I.", "main.rb")
           end
           assert_match(/main\.rb:1: warning: uplevel\ntest\n$/, err)
           _, err = capture_subprocess_io do
-            system(Gem.ruby, "-w", "--enable=gems", "-I", lib, "-C", dir, "-I.", "main.rb")
+            system(*ruby_with_rubygems_in_load_path, "-w", "--enable=gems", "-C", dir, "-I.", "main.rb")
           end
           assert_match(/main\.rb:1: warning: uplevel\ntest\n$/, err)
         end
       end
 
       define_method "test_no_other_behavioral_changes_with_#{prefix.tr(".", "_")}warn" do
-        lib = File.realpath("../../../lib", __FILE__)
         Dir.mktmpdir("warn_test") do |dir|
           File.write(dir + "/main.rb", "#{prefix}warn({x:1}, {y:2}, [])\n")
           _, err = capture_subprocess_io do
-            system(Gem.ruby, "-w", "--disable=gems", "-I", lib, "-C", dir, "main.rb")
+            system(*ruby_with_rubygems_in_load_path, "-w", "--disable=gems", "-C", dir, "main.rb")
           end
           assert_match(/{:x=>1}\n{:y=>2}\n$/, err)
           _, err = capture_subprocess_io do
-            system(Gem.ruby, "-w", "--enable=gems", "-I", lib, "-C", dir, "main.rb")
+            system(*ruby_with_rubygems_in_load_path, "-w", "--enable=gems", "-C", dir, "main.rb")
           end
           assert_match(/{:x=>1}\n{:y=>2}\n$/, err)
         end