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Contents
require File.expand_path('../../../spec_helper', __FILE__)
ruby_version_is "1.8.8" do
describe "Range#cover?" do
it "raises an ArgumentError without exactly one argument" do
lambda{ (1..2).cover? }.should raise_error(ArgumentError)
lambda{ (1..2).cover?(1,2) }.should raise_error(ArgumentError)
end
it "returns true if argument is equal to the first value of the range" do
(0..5).cover?(0).should be_true
('f'..'s').cover?('f').should be_true
end
it "returns true if argument is equal to the last value of the range" do
(0..5).cover?(5).should be_true
(0...5).cover?(4).should be_true
('f'..'s').cover?('s').should be_true
end
it "returns true if argument is less than the last value of the range and greater than the first value" do
(20..30).cover?(28).should be_true
('e'..'h').cover?('g').should be_true
("\u{999}".."\u{9999}").cover? "\u{9995}"
end
it "returns true if argument is sole element in the range" do
(30..30).cover?(30).should be_true
end
it "returns false if range is empty" do
(30...30).cover?(30).should be_false
(30...30).cover?(nil).should be_false
end
it "returns false if the range does not contain the argument" do
('A'..'C').cover?(20.9).should be_false
('A'...'C').cover?('C').should be_false
end
it "uses the range element's <=> to make the comparison" do
a = mock('a')
a.should_receive(:<=>).twice.and_return(-1,-1)
(a..'z').cover?('b').should be_true
end
it "uses a continuous inclusion test" do
('a'..'f').cover?('aa').should be_true
('a'..'f').cover?('babe').should be_true
('a'..'f').cover?('baby').should be_true
('a'..'f').cover?('ga').should be_false
(-10..-2).cover?(-2.5).should be_true
end
end
end
Version data entries
52 entries across 52 versions & 2 rubygems