Add in-tree mspec and ruby/spec

* For easier modifications of ruby/spec by MRI developers.
* .gitignore: track changes under spec.
* spec/mspec, spec/rubyspec: add in-tree mspec and ruby/spec.
  These files can therefore be updated like any other file in MRI.
  Instructions are provided in spec/README.
  [Feature #13156] [ruby-core:79246]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 36 insertions, 0 deletions

diff --git a/spec/rubyspec/core/array/select_spec.rb b/spec/rubyspec/core/array/select_spec.rb
new file mode 100644
index 0000000000..8b83acaa5f
--- /dev/null
+++ b/spec/rubyspec/core/array/select_spec.rb
@@ -0,0 +1,36 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require File.expand_path('../fixtures/classes', __FILE__)
+require File.expand_path('../shared/enumeratorize', __FILE__)
+require File.expand_path('../shared/keep_if', __FILE__)
+require File.expand_path('../../enumerable/shared/enumeratorized', __FILE__)
+
+describe "Array#select" do
+  it_behaves_like :enumeratorize, :select
+  it_behaves_like :enumeratorized_with_origin_size, :select, [1,2,3]
+
+  it "returns a new array of elements for which block is true" do
+    [1, 3, 4, 5, 6, 9].select { |i| i % ((i + 1) / 2) == 0}.should == [1, 4, 6]
+  end
+
+  it "does not return subclass instance on Array subclasses" do
+    ArraySpecs::MyArray[1, 2, 3].select { true }.should be_an_instance_of(Array)
+  end
+
+  it "properly handles recursive arrays" do
+    empty = ArraySpecs.empty_recursive_array
+    empty.select { true }.should == empty
+    empty.select { false }.should == []
+
+    array = ArraySpecs.recursive_array
+    array.select { true }.should == [1, 'two', 3.0, array, array, array, array, array]
+    array.select { false }.should == []
+  end
+end
+
+describe "Array#select!" do
+  it "returns nil if no changes were made in the array" do
+    [1, 2, 3].select! { true }.should be_nil
+  end
+
+  it_behaves_like :keep_if, :select!
+end