1 files changed, 97 insertions, 0 deletions

diff --git a/spec/ruby/core/kernel/Array_spec.rb b/spec/ruby/core/kernel/Array_spec.rb
new file mode 100644
index 0000000000..063faf7097
--- /dev/null
+++ b/spec/ruby/core/kernel/Array_spec.rb
@@ -0,0 +1,97 @@
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+
+describe "Kernel" do
+  it "has private instance method Array()" do
+    Kernel.private_instance_methods(false).should.include?(:Array)
+  end
+end
+
+describe :kernel_Array, shared: true do
+  before :each do
+    @array = [1, 2, 3]
+  end
+
+  it "does not call #to_ary on an Array" do
+    @array.should_not_receive(:to_ary)
+    @object.send(@method, @array).should == @array
+  end
+
+  it "calls #to_ary to convert the argument to an Array" do
+    obj = mock("Array([1,2,3])")
+    obj.should_receive(:to_ary).and_return(@array)
+    obj.should_not_receive(:to_a)
+
+    @object.send(@method, obj).should == @array
+  end
+
+  it "does not call #to_a on an Array" do
+    @array.should_not_receive(:to_a)
+    @object.send(@method, @array).should == @array
+  end
+
+  it "calls #to_a if the argument does not respond to #to_ary" do
+    obj = mock("Array([1,2,3])")
+    obj.should_receive(:to_a).and_return(@array)
+
+    @object.send(@method, obj).should == @array
+  end
+
+  it "calls #to_a if #to_ary returns nil" do
+    obj = mock("Array([1,2,3])")
+    obj.should_receive(:to_ary).and_return(nil)
+    obj.should_receive(:to_a).and_return(@array)
+
+    @object.send(@method, obj).should == @array
+  end
+
+  it "returns an Array containing the argument if #to_a returns nil" do
+    obj = mock("Array([1,2,3])")
+    obj.should_receive(:to_a).and_return(nil)
+
+    @object.send(@method, obj).should == [obj]
+  end
+
+  it "calls #to_ary first, even if it's private" do
+    obj = KernelSpecs::PrivateToAry.new
+
+    @object.send(@method, obj).should == [1, 2]
+  end
+
+  it "calls #to_a if #to_ary is not defined, even if it's private" do
+    obj = KernelSpecs::PrivateToA.new
+
+    @object.send(@method, obj).should == [3, 4]
+  end
+
+  it "returns an Array containing the argument if it responds to neither #to_ary nor #to_a" do
+    obj = mock("Array(x)")
+    @object.send(@method, obj).should == [obj]
+  end
+
+  it "returns an empty Array when passed nil" do
+    @object.send(@method, nil).should == []
+  end
+
+  it "raises a TypeError if #to_ary does not return an Array" do
+    obj = mock("Array() string")
+    obj.should_receive(:to_ary).and_return("string")
+
+    -> { @object.send(@method, obj) }.should.raise(TypeError)
+  end
+
+  it "raises a TypeError if #to_a does not return an Array" do
+    obj = mock("Array() string")
+    obj.should_receive(:to_a).and_return("string")
+
+    -> { @object.send(@method, obj) }.should.raise(TypeError)
+  end
+end
+
+describe "Kernel.Array" do
+  it_behaves_like :kernel_Array, :Array_method, KernelSpecs
+end
+
+describe "Kernel#Array" do
+  it_behaves_like :kernel_Array, :Array_function, KernelSpecs
+end