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require File.dirname(__FILE__) + "/../spec_helper"
java_import "java.util.ArrayList"
describe "List Ruby extensions" do
before(:each) do
@data = ["foo", "quux", "bar", "aa"]
@list = ArrayList.new(@data)
end
it "should support index() with one argument" do
@list.index("quux").should == 1
end
it "should return nil on index() with one argument that does not exist" do
@list.index(451).should == nil
end
it "should support index() with a block" do
@list.index{|x| x == "bar" }.should == 2
end
it "should support index() with a block that does not exist" do
@list.index{|x| x == :nazgul }.should == nil
end
it "should support index() with nil (not found)" do
@list.index(nil).should == nil
end
it "should support index() with nil (found)" do
ArrayList.new(["foo", "quux", nil, "bar", "aa"]).index(nil).should == 2
end
it "should support index() with no arguments" do
@list.index.each {|x| x == "foo" }.should == 0
end
it "should support index() with no arguments (not existing)" do
@list.index.each {|x| x == ":-(" }.should == nil
end
# Java 8 adds a single-parameter sort method to List that sorts in-place
if ENV_JAVA['java.specification.version'] < '1.8'
it "should be sortable with sort() without block" do
@list.sort.to_a.should == @data.sort
end
it "should be sortable with sort() with block" do
result = @list.sort do |a, b|
a.length <=> b.length
end
expected = @data.sort do |a, b|
a.length <=> b.length
end
result.to_a.should == expected
end
end
it "should be sortable with sort!() without block" do
list = ArrayList.new(@data)
list.sort!
list.to_a.should == @data.sort
end
it "should be sortable with sort!() with block" do
list = ArrayList.new(@data)
list.sort! do |a, b|
a.length <=> b.length
end
expected = @data.sort do |a, b|
a.length <=> b.length
end
list.to_a.should == expected
end
it "should support slicing with 2 arguments" do
@list[0,3].to_a.should == @data[0,3]
end
it "should support slicing with inclusive ranges" do
@list[0..3].to_a.should == @data[0..3]
end
it "should support slicing with exclusive ranges" do
@list[0...2].to_a.should == @data[0...2]
end
it "should respect to_ary objects defined on iteration" do
class Pair
def initialize(a, b)
@a = a
@b = b
end
def to_ary
[@a, @b]
end
end
ArrayList.new([Pair.new(:x, :y)]).each do |car, cdr|
car.should == :x
cdr.should == :y
end
end
end
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