1 files changed, 33 insertions, 33 deletions
diff --git a/spec/ruby/core/file/birthtime_spec.rb b/spec/ruby/core/file/birthtime_spec.rb
index 9720ede834..039fd7572c 100644
--- a/spec/ruby/core/file/birthtime_spec.rb
+++ b/spec/ruby/core/file/birthtime_spec.rb
@@ -1,56 +1,56 @@
-require File.expand_path('../../../spec_helper', __FILE__)
+require_relative '../../spec_helper'
 
-describe "File.birthtime" do
-  before :each do
-    @file = __FILE__
-  end
+platform_is :windows, :darwin, :freebsd, :netbsd, :linux do
+  not_implemented_messages = [
+    "birthtime() function is unimplemented", # unsupported OS/version
+    "birthtime is unimplemented",            # unsupported filesystem
+  ]
 
-  after :each do
-    @file = nil
-  end
+  describe "File.birthtime" do
+    before :each do
+      @file = __FILE__
+    end
+
+    after :each do
+      @file = nil
+    end
 
-  platform_is :windows, :darwin, :freebsd, :netbsd do
     it "returns the birth time for the named file as a Time object" do
       File.birthtime(@file)
-      File.birthtime(@file).should be_kind_of(Time)
+      File.birthtime(@file).should.is_a?(Time)
+    rescue NotImplementedError => e
+      e.message.should.start_with?(*not_implemented_messages)
     end
 
     it "accepts an object that has a #to_path method" do
+      File.birthtime(@file) # Avoid to failure of mock object with old Kernel and glibc
       File.birthtime(mock_to_path(@file))
+    rescue NotImplementedError => e
+      e.message.should.start_with?(*not_implemented_messages)
     end
 
     it "raises an Errno::ENOENT exception if the file is not found" do
-      lambda { File.birthtime('bogus') }.should raise_error(Errno::ENOENT)
+      -> { File.birthtime('bogus') }.should.raise(Errno::ENOENT)
+    rescue NotImplementedError => e
+      e.message.should.start_with?(*not_implemented_messages)
     end
   end
 
-  platform_is :linux, :openbsd do
-    it "raises an NotImplementedError" do
-      lambda { File.birthtime(@file) }.should raise_error(NotImplementedError)
+  describe "File#birthtime" do
+    before :each do
+      @file = File.open(__FILE__)
     end
-  end
-end
 
-describe "File#birthtime" do
-  before :each do
-    @file = File.open(__FILE__)
-  end
-
-  after :each do
-    @file.close
-    @file = nil
-  end
+    after :each do
+      @file.close
+      @file = nil
+    end
 
-  platform_is :windows, :darwin, :freebsd, :netbsd do
     it "returns the birth time for self" do
       @file.birthtime
-      @file.birthtime.should be_kind_of(Time)
-    end
-  end
-
-  platform_is :linux, :openbsd do
-    it "raises an NotImplementedError" do
-      lambda { @file.birthtime }.should raise_error(NotImplementedError)
+      @file.birthtime.should.is_a?(Time)
+    rescue NotImplementedError => e
+      e.message.should.start_with?(*not_implemented_messages)
     end
   end
 end