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Contents
require File.expand_path('../../../spec_helper', __FILE__)
ruby_version_is "1.8.7" do
describe "Range#min" do
it "returns the minimum value in the range when called with no arguments" do
(1..10).min.should == 1
('f'..'l').min.should == 'f'
end
ruby_version_is "1.9" do
it "returns the minimum value in the Float range when called with no arguments" do
(303.20..908.1111).min.should == 303.20
end
end
it "returns nil when the start point is greater than the endpoint" do
(100..10).min.should be_nil
('z'..'l').min.should be_nil
end
ruby_version_is "1.9" do
it "returns nil when the start point is greater than the endpoint in a Float range" do
(3003.20..908.1111).min.should be_nil
end
end
end
describe "Range#min given a block" do
it "passes each pair of values in the range to the block" do
acc = []
(1..10).min {|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 where the first argument is the current element, and the last is the first element" do
acc = []
(1..5).min {|a,b| acc << [a,b]; a }
acc.should == [[2, 1], [3, 1], [4, 1], [5, 1]]
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).min {|a,b| obj }
end
it "returns the element the block determines to be the minimum" do
(1..3).min {|a,b| -3 }.should == 3
end
end
end
Version data entries
52 entries across 52 versions & 2 rubygems