Update to ruby/spec@944ea57

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66622 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

spec/ruby/core/array/minus_spec.rb

@@ -1,87 +1,7 @@
 require_relative '../../spec_helper'
 require_relative 'fixtures/classes'
+require_relative 'shared/difference'
 
 describe "Array#-" do
-  it "creates an array minus any items from other array" do
-    ([] - [ 1, 2, 4 ]).should == []
-    ([1, 2, 4] - []).should == [1, 2, 4]
-    ([ 1, 2, 3, 4, 5 ] - [ 1, 2, 4 ]).should == [3, 5]
-  end
-
-  it "removes multiple items on the lhs equal to one on the rhs" do
-    ([1, 1, 2, 2, 3, 3, 4, 5] - [1, 2, 4]).should == [3, 3, 5]
-  end
-
-  it "properly handles recursive arrays" do
-    empty = ArraySpecs.empty_recursive_array
-    (empty - empty).should == []
-
-    ([] - ArraySpecs.recursive_array).should == []
-
-    array = ArraySpecs.recursive_array
-    (array - array).should == []
-  end
-
-  it "tries to convert the passed arguments to Arrays using #to_ary" do
-    obj = mock('[2,3,3,4]')
-    obj.should_receive(:to_ary).and_return([2, 3, 3, 4])
-    ([1, 1, 2, 2, 3, 4] - obj).should == [1, 1]
-  end
-
-  it "raises a TypeError if the argument cannot be coerced to an Array by calling #to_ary" do
-    obj = mock('not an array')
-    lambda { [1, 2, 3] - obj }.should raise_error(TypeError)
-  end
-
-  it "does not return subclass instance for Array subclasses" do
-    (ArraySpecs::MyArray[1, 2, 3] - []).should be_an_instance_of(Array)
-    (ArraySpecs::MyArray[1, 2, 3] - ArraySpecs::MyArray[]).should be_an_instance_of(Array)
-    ([1, 2, 3] - ArraySpecs::MyArray[]).should be_an_instance_of(Array)
-  end
-
-  it "does not call to_ary on array subclasses" do
-    ([5, 6, 7] - ArraySpecs::ToAryArray[7]).should == [5, 6]
-  end
-
-  it "removes an item identified as equivalent via #hash and #eql?" do
-    obj1 = mock('1')
-    obj2 = mock('2')
-    obj1.stub!(:hash).and_return(0)
-    obj2.stub!(:hash).and_return(0)
-    obj1.should_receive(:eql?).at_least(1).and_return(true)
-
-    ([obj1] - [obj2]).should == []
-    ([obj1, obj1, obj2, obj2] - [obj2]).should == []
-  end
-
-  it "doesn't remove an item with the same hash but not #eql?" do
-    obj1 = mock('1')
-    obj2 = mock('2')
-    obj1.stub!(:hash).and_return(0)
-    obj2.stub!(:hash).and_return(0)
-    obj1.should_receive(:eql?).at_least(1).and_return(false)
-
-    ([obj1] - [obj2]).should == [obj1]
-    ([obj1, obj1, obj2, obj2] - [obj2]).should == [obj1, obj1]
-  end
-
-  it "removes an identical item even when its #eql? isn't reflexive" do
-    x = mock('x')
-    x.stub!(:hash).and_return(42)
-    x.stub!(:eql?).and_return(false) # Stubbed for clarity and latitude in implementation; not actually sent by MRI.
-
-    ([x] - [x]).should == []
-  end
-
-  it "is not destructive" do
-    a = [1, 2, 3]
-    a - []
-    a.should == [1, 2, 3]
-    a - [1]
-    a.should == [1, 2, 3]
-    a - [1,2,3]
-    a.should == [1, 2, 3]
-    a - [:a, :b, :c]
-    a.should == [1, 2, 3]
-  end
+  it_behaves_like :array_binary_difference, :-
 end