1 files changed, 35 insertions, 0 deletions
diff --git a/spec/rubyspec/core/array/append_spec.rb b/spec/rubyspec/core/array/append_spec.rb
new file mode 100644
index 0000000000..4c65004c58
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+++ b/spec/rubyspec/core/array/append_spec.rb
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+require File.expand_path('../../../spec_helper', __FILE__)
+require File.expand_path('../fixtures/classes', __FILE__)
+
+describe "Array#<<" do
+  it "pushes the object onto the end of the array" do
+    ([ 1, 2 ] << "c" << "d" << [ 3, 4 ]).should == [1, 2, "c", "d", [3, 4]]
+  end
+
+  it "returns self to allow chaining" do
+    a = []
+    b = a
+    (a << 1).should equal(b)
+    (a << 2 << 3).should equal(b)
+  end
+
+  it "correctly resizes the Array" do
+    a = []
+    a.size.should == 0
+    a << :foo
+    a.size.should == 1
+    a << :bar << :baz
+    a.size.should == 3
+
+    a = [1, 2, 3]
+    a.shift
+    a.shift
+    a.shift
+    a << :foo
+    a.should == [:foo]
+  end
+
+  it "raises a RuntimeError on a frozen array" do
+    lambda { ArraySpecs.frozen_array << 5 }.should raise_error(RuntimeError)
+  end
+end