1 files changed, 32 insertions, 0 deletions
diff --git a/spec/ruby/core/array/each_spec.rb b/spec/ruby/core/array/each_spec.rb
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+++ b/spec/ruby/core/array/each_spec.rb
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+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('../../enumerable/shared/enumeratorized', __FILE__)
+
+# Modifying a collection while the contents are being iterated
+# gives undefined behavior. See
+# http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-core/23633
+
+describe "Array#each" do
+  it "yields each element to the block" do
+    a = []
+    x = [1, 2, 3]
+    x.each { |item| a << item }.should equal(x)
+    a.should == [1, 2, 3]
+  end
+
+  it "yields each element to a block that takes multiple arguments" do
+    a = [[1, 2], :a, [3, 4]]
+    b = []
+
+    a.each { |x, y| b << x }
+    b.should == [1, :a, 3]
+
+    b = []
+    a.each { |x, y| b << y }
+    b.should == [2, nil, 4]
+  end
+
+  it_behaves_like :enumeratorize, :each
+  it_behaves_like :enumeratorized_with_origin_size, :each, [1,2,3]
+end