1 files changed, 185 insertions, 0 deletions
diff --git a/spec/ruby/command_line/rubyopt_spec.rb b/spec/ruby/command_line/rubyopt_spec.rb
new file mode 100644
index 0000000000..eb297cd6fe
--- /dev/null
+++ b/spec/ruby/command_line/rubyopt_spec.rb
@@ -0,0 +1,185 @@
+require_relative '../spec_helper'
+
+describe "Processing RUBYOPT" do
+  before :each do
+    @rubyopt, ENV["RUBYOPT"] = ENV["RUBYOPT"], nil
+  end
+
+  after :each do
+    ENV["RUBYOPT"] = @rubyopt
+  end
+
+  it "adds the -I path to $LOAD_PATH" do
+    ENV["RUBYOPT"] = "-Ioptrubyspecincl"
+    result = ruby_exe("puts $LOAD_PATH.grep(/byspecin/)")
+    result.chomp[-15..-1].should == "optrubyspecincl"
+  end
+
+  it "sets $DEBUG to true for '-d'" do
+    ENV["RUBYOPT"] = '-d'
+    command = %[puts "value of $DEBUG is \#{$DEBUG}"]
+    result = ruby_exe(command, args: "2>&1")
+    result.should =~ /value of \$DEBUG is true/
+  end
+
+  guard -> { RbConfig::CONFIG["CROSS_COMPILING"] != "yes" } do
+    it "prints the version number for '-v'" do
+      ENV["RUBYOPT"] = '-v'
+      ruby_exe("")[/\A.*/].gsub(/\s\+(YJIT( \w+)?|ZJIT( \w+)?|PRISM|GC(\[\w+\])?)(?=\s)/, "").should == RUBY_DESCRIPTION.gsub(/\s\+(YJIT( \w+)?|ZJIT( \w+)?|PRISM|GC(\[\w+\])?)(?=\s)/, "")
+    end
+
+    it "ignores whitespace around the option" do
+      ENV["RUBYOPT"] = ' -v '
+      ruby_exe("")[/\A.*/].gsub(/\s\+(YJIT( \w+)?|ZJIT( \w+)?|PRISM|GC(\[\w+\])?)(?=\s)/, "").should == RUBY_DESCRIPTION.gsub(/\s\+(YJIT( \w+)?|ZJIT( \w+)?|PRISM|GC(\[\w+\])?)(?=\s)/, "")
+    end
+  end
+
+  it "sets $VERBOSE to true for '-w'" do
+    ENV["RUBYOPT"] = '-w'
+    ruby_exe("p $VERBOSE").chomp.should == "true"
+  end
+
+  it "sets $VERBOSE to true for '-W'" do
+    ENV["RUBYOPT"] = '-W'
+    ruby_exe("p $VERBOSE").chomp.should == "true"
+  end
+
+  it "sets $VERBOSE to nil for '-W0'" do
+    ENV["RUBYOPT"] = '-W0'
+    ruby_exe("p $VERBOSE").chomp.should == "nil"
+  end
+
+  it "sets $VERBOSE to false for '-W1'" do
+    ENV["RUBYOPT"] = '-W1'
+    ruby_exe("p $VERBOSE").chomp.should == "false"
+  end
+
+  it "sets $VERBOSE to true for '-W2'" do
+    ENV["RUBYOPT"] = '-W2'
+    ruby_exe("p $VERBOSE").chomp.should == "true"
+  end
+
+  it "suppresses deprecation warnings for '-W:no-deprecated'" do
+    ENV["RUBYOPT"] = '-W:no-deprecated'
+    result = ruby_exe('$; = ""', args: '2>&1')
+    result.should == ""
+  end
+
+  it "suppresses experimental warnings for '-W:no-experimental'" do
+    ENV["RUBYOPT"] = '-W:no-experimental'
+    result = ruby_exe('case 0; in a; end', args: '2>&1')
+    result.should == ""
+  end
+
+  it "suppresses deprecation and experimental warnings for '-W:no-deprecated -W:no-experimental'" do
+    ENV["RUBYOPT"] = '-W:no-deprecated -W:no-experimental'
+    result = ruby_exe('case ($; = ""); in a; end', args: '2>&1')
+    result.should == ""
+  end
+
+  it "requires the file for '-r'" do
+    f = fixture __FILE__, "rubyopt"
+    ENV["RUBYOPT"] = "-r#{f}"
+    ruby_exe("0", args: '2>&1').should =~ /^rubyopt.rb required/
+  end
+
+  it "raises a RuntimeError for '-a'" do
+    ENV["RUBYOPT"] = '-a'
+    ruby_exe("", args: '2>&1', exit_status: 1).should =~ /RuntimeError/
+  end
+
+  it "raises a RuntimeError for '-p'" do
+    ENV["RUBYOPT"] = '-p'
+    ruby_exe("", args: '2>&1', exit_status: 1).should =~ /RuntimeError/
+  end
+
+  it "raises a RuntimeError for '-n'" do
+    ENV["RUBYOPT"] = '-n'
+    ruby_exe("", args: '2>&1', exit_status: 1).should =~ /RuntimeError/
+  end
+
+  it "raises a RuntimeError for '-y'" do
+    ENV["RUBYOPT"] = '-y'
+    ruby_exe("", args: '2>&1', exit_status: 1).should =~ /RuntimeError/
+  end
+
+  it "raises a RuntimeError for '-c'" do
+    ENV["RUBYOPT"] = '-c'
+    ruby_exe("", args: '2>&1', exit_status: 1).should =~ /RuntimeError/
+  end
+
+  it "raises a RuntimeError for '-s'" do
+    ENV["RUBYOPT"] = '-s'
+    ruby_exe("", args: '2>&1', exit_status: 1).should =~ /RuntimeError/
+  end
+
+  it "raises a RuntimeError for '-h'" do
+    ENV["RUBYOPT"] = '-h'
+    ruby_exe("", args: '2>&1', exit_status: 1).should =~ /RuntimeError/
+  end
+
+  it "raises a RuntimeError for '--help'" do
+    ENV["RUBYOPT"] = '--help'
+    ruby_exe("", args: '2>&1', exit_status: 1).should =~ /RuntimeError/
+  end
+
+  it "raises a RuntimeError for '-l'" do
+    ENV["RUBYOPT"] = '-l'
+    ruby_exe("", args: '2>&1', exit_status: 1).should =~ /RuntimeError/
+  end
+
+  it "raises a RuntimeError for '-S'" do
+    ENV["RUBYOPT"] = '-S irb'
+    ruby_exe("", args: '2>&1', exit_status: 1).should =~ /RuntimeError/
+  end
+
+  it "raises a RuntimeError for '-e'" do
+    ENV["RUBYOPT"] = '-e0'
+    ruby_exe("", args: '2>&1', exit_status: 1).should =~ /RuntimeError/
+  end
+
+  it "raises a RuntimeError for '-i'" do
+    ENV["RUBYOPT"] = '-i.bak'
+    ruby_exe("", args: '2>&1', exit_status: 1).should =~ /RuntimeError/
+  end
+
+  it "raises a RuntimeError for '-x'" do
+    ENV["RUBYOPT"] = '-x'
+    ruby_exe("", args: '2>&1', exit_status: 1).should =~ /RuntimeError/
+  end
+
+  it "raises a RuntimeError for '-C'" do
+    ENV["RUBYOPT"] = '-C'
+    ruby_exe("", args: '2>&1', exit_status: 1).should =~ /RuntimeError/
+  end
+
+  it "raises a RuntimeError for '-X'" do
+    ENV["RUBYOPT"] = '-X.'
+    ruby_exe("", args: '2>&1', exit_status: 1).should =~ /RuntimeError/
+  end
+
+  it "raises a RuntimeError for '-F'" do
+    ENV["RUBYOPT"] = '-F'
+    ruby_exe("", args: '2>&1', exit_status: 1).should =~ /RuntimeError/
+  end
+
+  it "raises a RuntimeError for '-0'" do
+    ENV["RUBYOPT"] = '-0'
+    ruby_exe("", args: '2>&1', exit_status: 1).should =~ /RuntimeError/
+  end
+
+  it "raises a RuntimeError for '--copyright'" do
+    ENV["RUBYOPT"] = '--copyright'
+    ruby_exe("", args: '2>&1', exit_status: 1).should =~ /RuntimeError/
+  end
+
+  it "raises a RuntimeError for '--version'" do
+    ENV["RUBYOPT"] = '--version'
+    ruby_exe("", args: '2>&1', exit_status: 1).should =~ /RuntimeError/
+  end
+
+  it "raises a RuntimeError for '--yydebug'" do
+    ENV["RUBYOPT"] = '--yydebug'
+    ruby_exe("", args: '2>&1', exit_status: 1).should =~ /RuntimeError/
+  end
+end