1 files changed, 66 insertions, 0 deletions
diff --git a/spec/ruby/core/file/stat/comparison_spec.rb b/spec/ruby/core/file/stat/comparison_spec.rb
new file mode 100644
index 0000000000..a70a083ab2
--- /dev/null
+++ b/spec/ruby/core/file/stat/comparison_spec.rb
@@ -0,0 +1,66 @@
+require File.expand_path('../../../../spec_helper', __FILE__)
+
+describe "File::Stat#<=>" do
+  before :each do
+    @name1 = tmp("i_exist")
+    @name2 = tmp("i_exist_too")
+    touch @name1
+    touch @name2
+  end
+
+  after :each do
+    rm_r @name1, @name2
+  end
+
+  it "is able to compare files by the same modification times" do
+    now = Time.now - 1 # 1 second ago to avoid NFS cache issue
+    File.utime(now, now, @name1)
+    File.utime(now, now, @name2)
+
+    File.open(@name1) { |file1|
+      File.open(@name2) { |file2|
+        (file1.stat <=> file2.stat).should == 0
+      }
+    }
+  end
+
+  it "is able to compare files by different modification times" do
+    now = Time.now
+    File.utime(now, now + 100, @name2)
+
+    File.open(@name1) { |file1|
+      File.open(@name2) { |file2|
+        (file1.stat <=> file2.stat).should == -1
+      }
+    }
+
+    File.utime(now, now - 100, @name2)
+
+    File.open(@name1) { |file1|
+      File.open(@name2) { |file2|
+        (file1.stat <=> file2.stat).should == 1
+      }
+    }
+  end
+
+  # TODO: Fix
+  it "includes Comparable and #== shows mtime equality between two File::Stat objects" do
+    File.open(@name1) { |file1|
+      File.open(@name2) { |file2|
+        (file1.stat == file1.stat).should == true
+        (file2.stat == file2.stat).should == true
+      }
+    }
+
+    now = Time.now
+    File.utime(now, now + 100, @name2)
+
+    File.open(@name1) { |file1|
+      File.open(@name2) { |file2|
+        (file1.stat == file2.stat).should == false
+        (file1.stat == file1.stat).should == true
+        (file2.stat == file2.stat).should == true
+      }
+    }
+  end
+end