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Contents
require File.expand_path('../../../spec_helper', __FILE__)
ruby_version_is "1.8.7" do
describe "Range#max" do
it "returns the maximum value in the range when called with no arguments" do
(1..10).max.should == 10
('f'..'l').max.should == 'l'
end
ruby_version_is "1.9" do
it "returns the maximum value in the Float range when called with no arguments" do
(303.20..908.1111).max.should == 908.1111
end
end
it "returns nil when the endpoint is less than the start point" do
(100..10).max.should be_nil
('z'..'l').max.should be_nil
end
ruby_version_is "1.9" do
it "returns nil when the endpoint is less than the start point in a Float range" do
(3003.20..908.1111).max.should be_nil
end
end
end
describe "Range#max given a block" do
it "passes each pair of values in the range to the block" do
acc = []
(1..10).max {|a,b| acc << [a,b]; a }
acc.flatten!
(1..10).each do |value|
acc.include?(value).should be_true
end
end
it "passes each pair of elements to the block in reversed order" do
acc = []
(1..5).max {|a,b| acc << [a,b]; a }
acc.should == [[2,1],[3,2], [4,3], [5, 4]]
end
it "calls #> and #< on the return value of the block" do
obj = mock('obj')
obj.should_receive(:>).exactly(2).times
obj.should_receive(:<).exactly(2).times
(1..3).max {|a,b| obj }
end
it "returns the element the block determines to be the maximum" do
(1..3).max {|a,b| -3 }.should == 1
end
end
end
Version data entries
52 entries across 52 versions & 2 rubygems