1 files changed, 56 insertions, 0 deletions
diff --git a/spec/ruby/core/process/euid_spec.rb b/spec/ruby/core/process/euid_spec.rb
new file mode 100644
index 0000000000..da76f06e59
--- /dev/null
+++ b/spec/ruby/core/process/euid_spec.rb
@@ -0,0 +1,56 @@
+require_relative '../../spec_helper'
+
+describe "Process.euid" do
+  it "returns the effective user ID for this process" do
+    Process.euid.should.is_a?(Integer)
+  end
+
+  it "also goes by Process::UID.eid" do
+    Process::UID.eid.should == Process.euid
+  end
+
+  it "also goes by Process::Sys.geteuid" do
+    Process::Sys.geteuid.should == Process.euid
+  end
+end
+
+describe "Process.euid=" do
+
+  platform_is_not :windows do
+    it "raises TypeError if not passed an Integer" do
+      -> { Process.euid = Object.new }.should.raise(TypeError)
+    end
+
+    it "sets the effective user id to its own uid if given the username corresponding to its own uid" do
+      raise unless Process.uid == Process.euid
+
+      require "etc"
+      user = Etc.getpwuid(Process.uid).name
+
+      Process.euid = user
+      Process.euid.should == Process.uid
+    end
+
+    as_user do
+      it "raises Errno::ERPERM if run by a non superuser trying to set the superuser id" do
+        -> { Process.euid = 0 }.should.raise(Errno::EPERM)
+      end
+
+      it "raises Errno::ERPERM if run by a non superuser trying to set the superuser id from username" do
+        -> { Process.euid = "root" }.should.raise(Errno::EPERM)
+      end
+    end
+
+    as_superuser do
+      describe "if run by a superuser" do
+        it "sets the effective user id for the current process if run by a superuser" do
+          code = <<-RUBY
+            Process.euid = 1
+            puts Process.euid
+          RUBY
+          ruby_exe(code).should == "1\n"
+        end
+      end
+    end
+  end
+end