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Contents
require File.dirname(File.join(__rhoGetCurrentDir(), __FILE__)) + '/../../spec_helper'
require File.dirname(File.join(__rhoGetCurrentDir(), __FILE__)) + '/fixtures/classes'
describe "Array#each_index" do
it "passes the index of each element to the block" do
a = []
x = ['a', 'b', 'c', 'd']
x.each_index { |i| a << i }.should equal(x)
a.should == [0, 1, 2, 3]
end
it "passes the index of each element to the block even if the array is changed during iteration" do
a = []
x = [10, 11, 12, 13,]
x.each_index {|i| a << i; x << x[i]+5 if (x[i]%2).zero? }.should equal(x)
a.should == [0, 1, 2, 3, 4, 5]
end
it "passes the index from 0..size even if size changes" do
a = []
x = [10, 11, 12, 13, 14]
x.each_index {|i| a << i; x.pop if (x[i]%2).zero? }.should equal(x)
a.should == [0, 1, 2]
a = []
x = [10, 11, 12, 13, 14]
x.each_index {|i| a << i; x.shift if (x[i]%2).zero? }.should equal(x)
a.should == [0, 1, 2]
end
ruby_version_is '' ... '1.8.7' do
it 'raises a LocalJumpError if no block given' do
lambda{ [1,2].each_index }.should raise_error(LocalJumpError)
end
end
ruby_version_is '1.8.7' do
it 'returns an Enumerator if no block given' do
[1,2].each_index.should be_kind_of(enumerator_class)
end
end
end
Version data entries
83 entries across 83 versions & 1 rubygems