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$: << File.join(File.expand_path(File.dirname(__FILE__)), '..', 'lib')
require 'algorithms'
shared_examples "empty splaytree" do
it "should let you push stuff in" do
100.times { |x| @tree[x] = x }
expect(@tree.size).to eql(100)
end
it "should return 0 for size" do
expect(@tree.size).to eql(0)
end
it "should return nil for #min and #max" do
expect(@tree.min).to be_nil
expect(@tree.max).to be_nil
end
it "should return nil for #delete" do
expect(@tree.delete(:non_existing)).to be_nil
end
it "should return nil for #get" do
expect(@tree[4235]).to be_nil
end
end
shared_examples "non-empty splaytree" do
before(:each) do
@num_items = 100
@random_array = []
@num_items.times { @random_array << rand(@num_items) }
@random_array.each { |x| @tree[x] = x }
end
it "should return correct size (uniqify items first)" do
expect(@tree.size).to eql(@random_array.uniq.size)
end
it "should have correct height (worst case is when items are inserted in order, and height = num items inserted)" do
@tree.clear
10.times { |x| @tree[x] = x }
expect(@tree.height).to eql(10)
end
it "should return correct max and min keys" do
expect(@tree.min[0]).to eql(@random_array.min)
expect(@tree.max[0]).to eql(@random_array.max)
end
it "should not #has_key? keys it doesn't have" do
expect(@tree.has_key?(10000)).to be false
end
it "should #has_key? keys it does have" do
expect(@tree.has_key?(@random_array[0])).to be true
end
it "should remove any key" do
random_key = @random_array[rand(@num_items)]
expect(@tree.has_key?(random_key)).to be true
expect(@tree.delete(random_key)).to eql(random_key)
expect(@tree.has_key?(random_key)).to be false
end
it "should let you iterate with #each" do
counter = 0
sorted_array = @random_array.uniq.sort
@tree.each do |key, val|
expect(key).to eql(sorted_array[counter])
counter += 1
end
end
end
describe "empty splaytreemap" do
before(:each) do
@tree = Containers::RubySplayTreeMap.new
end
it_should_behave_like "empty splaytree"
end
describe "full splaytreemap" do
before(:each) do
@tree = Containers::RubySplayTreeMap.new
end
it_should_behave_like "non-empty splaytree"
end
begin
Containers::CSplayTreeMap
describe "empty csplaytreemap" do
before(:each) do
@tree = Containers::CSplayTreeMap.new
end
it_should_behave_like "empty splaytree"
end
describe "full csplaytreemap" do
before(:each) do
@tree = Containers::CSplayTreeMap.new
end
it_should_behave_like "non-empty splaytree"
end
rescue Exception
end
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