1 files changed, 43 insertions, 44 deletions
diff --git a/spec/ruby/library/etc/getgrgid_spec.rb b/spec/ruby/library/etc/getgrgid_spec.rb
index 9b6b283d52..472d4c82c8 100644
--- a/spec/ruby/library/etc/getgrgid_spec.rb
+++ b/spec/ruby/library/etc/getgrgid_spec.rb
@@ -1,4 +1,4 @@
-require File.expand_path('../../../spec_helper', __FILE__)
+require_relative '../../spec_helper'
 require 'etc'
 
 platform_is :windows do
@@ -13,58 +13,57 @@ end
 
 # TODO: verify these on non-windows, non-darwin OS
 platform_is_not :windows do
-  describe "Etc.getgrgid" do
-    before :all do
-      @gid = `id -g`.strip.to_i
-      @name = `id -gn`.strip
-    end
+  grpname = nil
+  guard -> {
+    grpname = IO.popen(%w'id -gn', err: IO::NULL, &:read).chomp
+    $?.success?
+  } do
+    describe "Etc.getgrgid" do
+      before :all do
+        @gid = `id -g`.strip.to_i
+        @name = grpname
+      end
 
-    it "returns a Etc::Group struct instance for the given user" do
-      gr = Etc.getgrgid(@gid)
+      it "returns a Etc::Group struct instance for the given user" do
+        gr = Etc.getgrgid(@gid)
 
-      gr.is_a?(Etc::Group).should == true
-      gr.gid.should == @gid
-      gr.name.should == @name
-    end
+        gr.is_a?(Etc::Group).should == true
+        gr.gid.should == @gid
+        gr.name.should == @name
+      end
 
-    it "returns the Etc::Group for a given gid if it exists" do
-      grp = Etc.getgrgid(@gid)
-      grp.should be_kind_of(Etc::Group)
-      grp.gid.should == @gid
-      grp.name.should == @name
-    end
+      it "returns the Etc::Group for a given gid if it exists" do
+        grp = Etc.getgrgid(@gid)
+        grp.should.is_a?(Etc::Group)
+        grp.gid.should == @gid
+        grp.name.should == @name
+      end
 
-    it "uses Process.gid as the default value for the argument" do
-      gr = Etc.getgrgid
+      it "uses Process.gid as the default value for the argument" do
+        gr = Etc.getgrgid
 
-      gr.gid.should == @gid
-      gr.name.should == @name
-    end
+        gr.gid.should == @gid
+        gr.name.should == @name
+      end
 
-    it "returns the Group for a given gid if it exists" do
-      grp = Etc.getgrgid(@gid)
-      grp.should be_kind_of(Struct::Group)
-      grp.gid.should == @gid
-      grp.name.should == @name
-    end
-
-    it "raises if the group does not exist" do
-      lambda { Etc.getgrgid(9876)}.should raise_error(ArgumentError)
-    end
+      it "raises if the group does not exist" do
+        -> { Etc.getgrgid(9876)}.should.raise(ArgumentError)
+      end
 
-    it "raises a TypeError if not passed an Integer" do
-      lambda { Etc.getgrgid("foo") }.should raise_error(TypeError)
-      lambda { Etc.getgrgid(nil)   }.should raise_error(TypeError)
-    end
+      it "raises a TypeError if not passed an Integer" do
+        -> { Etc.getgrgid("foo") }.should.raise(TypeError)
+        -> { Etc.getgrgid(nil)   }.should.raise(TypeError)
+      end
 
-    it "can be called safely by multiple threads" do
-      20.times.map do
-        Thread.new do
-          100.times do
-            Etc.getgrgid(@gid).gid.should == @gid
+      it "can be called safely by multiple threads" do
+        20.times.map do
+          Thread.new do
+            100.times do
+              Etc.getgrgid(@gid).gid.should == @gid
+            end
           end
-        end
-      end.each(&:join)
+        end.each(&:join)
+      end
     end
   end
 end