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, 141 insertions, 0 deletions

diff --git a/spec/rubyspec/core/enumerable/any_spec.rb b/spec/rubyspec/core/enumerable/any_spec.rb
new file mode 100644
index 0000000000..4f7af68b07
--- /dev/null
+++ b/spec/rubyspec/core/enumerable/any_spec.rb
@@ -0,0 +1,141 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require File.expand_path('../fixtures/classes', __FILE__)
+
+describe "Enumerable#any?" do
+  before :each do
+    @enum = EnumerableSpecs::Numerous.new
+    @empty = EnumerableSpecs::Empty.new()
+    @enum1 = [0, 1, 2, -1]
+    @enum2 = [nil, false, true]
+  end
+
+  it "always returns false on empty enumeration" do
+    @empty.any?.should == false
+    @empty.any? { nil }.should == false
+
+    [].any?.should == false
+    [].any? { false }.should == false
+
+    {}.any?.should == false
+    {}.any? { nil }.should == false
+  end
+
+  it "raises an ArgumentError when any arguments provided" do
+    lambda { @enum.any?(Proc.new {}) }.should raise_error(ArgumentError)
+    lambda { @enum.any?(nil) }.should raise_error(ArgumentError)
+    lambda { @empty.any?(1) }.should raise_error(ArgumentError)
+    lambda { @enum1.any?(1) {} }.should raise_error(ArgumentError)
+    lambda { @enum2.any?(1, 2, 3) {} }.should raise_error(ArgumentError)
+  end
+
+  it "does not hide exceptions out of #each" do
+    lambda {
+      EnumerableSpecs::ThrowingEach.new.any?
+    }.should raise_error(RuntimeError)
+
+    lambda {
+      EnumerableSpecs::ThrowingEach.new.any? { false }
+    }.should raise_error(RuntimeError)
+  end
+
+  describe "with no block" do
+    it "returns true if any element is not false or nil" do
+      @enum.any?.should == true
+      @enum1.any?.should == true
+      @enum2.any?.should == true
+      EnumerableSpecs::Numerous.new(true).any?.should == true
+      EnumerableSpecs::Numerous.new('a','b','c').any?.should == true
+      EnumerableSpecs::Numerous.new('a','b','c', nil).any?.should == true
+      EnumerableSpecs::Numerous.new(1, nil, 2).any?.should == true
+      EnumerableSpecs::Numerous.new(1, false).any?.should == true
+      EnumerableSpecs::Numerous.new(false, nil, 1, false).any?.should == true
+      EnumerableSpecs::Numerous.new(false, 0, nil).any?.should == true
+    end
+
+    it "returns false if all elements are false or nil" do
+      EnumerableSpecs::Numerous.new(false).any?.should == false
+      EnumerableSpecs::Numerous.new(false, false).any?.should == false
+      EnumerableSpecs::Numerous.new(nil).any?.should == false
+      EnumerableSpecs::Numerous.new(nil, nil).any?.should == false
+      EnumerableSpecs::Numerous.new(nil, false, nil).any?.should == false
+    end
+
+    it "gathers whole arrays as elements when each yields multiple" do
+      multi = EnumerableSpecs::YieldsMultiWithFalse.new
+      multi.any?.should be_true
+    end
+  end
+
+  describe "with block" do
+    it "returns true if the block ever returns other than false or nil" do
+      @enum.any? { true } == true
+      @enum.any? { 0 } == true
+      @enum.any? { 1 } == true
+
+      @enum1.any? { Object.new } == true
+      @enum1.any?{ |o| o < 1 }.should == true
+      @enum1.any?{ |o| 5 }.should == true
+
+      @enum2.any? { |i| i == nil }.should == true
+    end
+
+    it "any? should return false if the block never returns other than false or nil" do
+      @enum.any? { false }.should == false
+      @enum.any? { nil }.should == false
+
+      @enum1.any?{ |o| o < -10 }.should == false
+      @enum1.any?{ |o| nil }.should == false
+
+      @enum2.any? { |i| i == :stuff }.should == false
+    end
+
+    it "stops iterating once the return value is determined" do
+      yielded = []
+      EnumerableSpecs::Numerous.new(:one, :two, :three).any? do |e|
+        yielded << e
+        false
+      end.should == false
+      yielded.should == [:one, :two, :three]
+
+      yielded = []
+      EnumerableSpecs::Numerous.new(true, true, false, true).any? do |e|
+        yielded << e
+        e
+      end.should == true
+      yielded.should == [true]
+
+      yielded = []
+      EnumerableSpecs::Numerous.new(false, nil, false, true, false).any? do |e|
+        yielded << e
+        e
+      end.should == true
+      yielded.should == [false, nil, false, true]
+
+      yielded = []
+      EnumerableSpecs::Numerous.new(1, 2, 3, 4, 5).any? do |e|
+        yielded << e
+        e
+      end.should == true
+      yielded.should == [1]
+    end
+
+    it "does not hide exceptions out of the block" do
+      lambda {
+        @enum.any? { raise "from block" }
+      }.should raise_error(RuntimeError)
+    end
+
+    it "gathers initial args as elements when each yields multiple" do
+      multi = EnumerableSpecs::YieldsMulti.new
+      multi.any? {|e| e == 1 }.should be_true
+    end
+
+    it "yields multiple arguments when each yields multiple" do
+      multi = EnumerableSpecs::YieldsMulti.new
+      yielded = []
+      multi.any? {|e, i| yielded << [e, i] }
+      yielded.should == [[1, 2]]
+    end
+
+  end
+end