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require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/classes', __FILE__)
describe "Array#initialize" do
before :each do
ScratchPad.clear
end
it "is private" do
Array.should have_private_instance_method("initialize")
end
it "is called on subclasses" do
b = ArraySpecs::SubArray.new :size_or_array, :obj
b.should == []
ScratchPad.recorded.should == [:size_or_array, :obj]
end
it "preserves the object's identity even when changing its value" do
a = [1, 2, 3]
a.send(:initialize).should equal(a)
a.should_not == [1, 2, 3]
end
it "raise an ArgumentError if passed 3 or more arguments" do
lambda do
[1, 2].send :initialize, 1, 'x', true
end.should raise_error(ArgumentError)
lambda do
[1, 2].send(:initialize, 1, 'x', true) {}
end.should raise_error(ArgumentError)
end
ruby_version_is '' ... '1.9' do
it "raises a TypeError on frozen arrays even if the array would not be modified" do
lambda do
ArraySpecs.frozen_array.send :initialize
end.should raise_error(TypeError)
lambda do
ArraySpecs.frozen_array.send :initialize, ArraySpecs.frozen_array
end.should raise_error(TypeError)
end
end
ruby_version_is '1.9' do
it "raises a RuntimeError on frozen arrays" do
lambda do
ArraySpecs.frozen_array.send :initialize
end.should raise_error(RuntimeError)
lambda do
ArraySpecs.frozen_array.send :initialize, ArraySpecs.frozen_array
end.should raise_error(RuntimeError)
end
end
end
describe "Array#initialize with no arguments" do
it "makes the array empty" do
[1, 2, 3].send(:initialize).should be_empty
end
it "does not use the given block" do
lambda{ [1, 2, 3].send(:initialize) { raise } }.should_not raise_error
end
end
describe "Array#initialize with (array)" do
it "replaces self with the other array" do
b = [4, 5, 6]
[1, 2, 3].send(:initialize, b).should == b
end
it "does not use the given block" do
lambda{ [1, 2, 3].send(:initialize) { raise } }.should_not raise_error
end
it "calls #to_ary to convert the value to an array" do
a = mock("array")
a.should_receive(:to_ary).and_return([1, 2])
a.should_not_receive(:to_int)
[].send(:initialize, a).should == [1, 2]
end
it "does not call #to_ary on instances of Array or subclasses of Array" do
a = [1, 2]
a.should_not_receive(:to_ary)
[].send(:initialize, a).should == a
end
it "raises a TypeError if an Array type argument and a default object" do
lambda { [].send(:initialize, [1, 2], 1) }.should raise_error(TypeError)
end
end
describe "Array#initialize with (size, object=nil)" do
it "sets the array to size and fills with the object" do
a = []
obj = [3]
a.send(:initialize, 2, obj).should == [obj, obj]
a[0].should equal(obj)
a[1].should equal(obj)
end
it "sets the array to size and fills with nil when object is omitted" do
[].send(:initialize, 3).should == [nil, nil, nil]
end
it "raises an ArgumentError if size is negative" do
lambda { [].send(:initialize, -1, :a) }.should raise_error(ArgumentError)
lambda { [].send(:initialize, -1) }.should raise_error(ArgumentError)
end
platform_is :wordsize => 32 do
it "raises an ArgumentError if size is too large" do
max_size = ArraySpecs.max_32bit_size
lambda { [].send(:initialize, max_size + 1) }.should raise_error(ArgumentError)
end
end
platform_is :wordsize => 64 do
it "raises an ArgumentError if size is too large" do
max_size = ArraySpecs.max_64bit_size
lambda { [].send(:initialize, max_size + 1) }.should raise_error(ArgumentError)
end
end
it "calls #to_int to convert the size argument to an Integer when object is given" do
obj = mock('1')
obj.should_receive(:to_int).and_return(1)
[].send(:initialize, obj, :a).should == [:a]
end
it "calls #to_int to convert the size argument to an Integer when object is not given" do
obj = mock('1')
obj.should_receive(:to_int).and_return(1)
[].send(:initialize, obj).should == [nil]
end
it "raises a TypeError if the size argument is not an Integer type" do
obj = mock('nonnumeric')
obj.stub!(:to_ary).and_return([1, 2])
lambda{ [].send(:initialize, obj, :a) }.should raise_error(TypeError)
end
it "yields the index of the element and sets the element to the value of the block" do
[].send(:initialize, 3) { |i| i.to_s }.should == ['0', '1', '2']
end
it "uses the block value instead of using the default value" do
[].send(:initialize, 3, :obj) { |i| i.to_s }.should == ['0', '1', '2']
end
it "returns the value passed to break" do
[].send(:initialize, 3) { break :a }.should == :a
end
it "sets the array to the values returned by the block before break is executed" do
a = [1, 2, 3]
a.send(:initialize, 3) do |i|
break if i == 2
i.to_s
end
a.should == ['0', '1']
end
end
|
