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Comparable#clamp with a range [Feature #14784]

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This commit is contained in:
Nobuyoshi Nakada 2019-10-15 22:32:10 +09:00
parent 375cf12918
commit 929d5fd3b9
Notes: git 2019-10-16 01:43:03 +09:00
5 changed files with 103 additions and 9 deletions
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48
spec/ruby/core/comparable/clamp_spec.rb
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@ -2,10 +2,12 @@ require_relative '../../spec_helper'
require_relative 'fixtures/classes'
describe 'Comparable#clamp' do
it 'raises an Argument error unless given 2 parameters' do
c = ComparableSpecs::Weird.new(0)
-> { c.clamp(c) }.should raise_error(ArgumentError)
-> { c.clamp(c, c, c) }.should raise_error(ArgumentError)
ruby_version_is ""..."2.7" do
it 'raises an Argument error unless given 2 parameters' do
c = ComparableSpecs::Weird.new(0)
-> { c.clamp(c) }.should raise_error(ArgumentError)
-> { c.clamp(c, c, c) }.should raise_error(ArgumentError)
end
end
it 'raises an Argument error unless the 2 parameters are correctly ordered' do
@ -45,4 +47,42 @@ describe 'Comparable#clamp' do
c.clamp(one, two).should equal(two)
end
ruby_version_is "2.7" do
it 'returns self if within the given range parameters' do
one = ComparableSpecs::WithOnlyCompareDefined.new(1)
two = ComparableSpecs::WithOnlyCompareDefined.new(2)
three = ComparableSpecs::WithOnlyCompareDefined.new(3)
c = ComparableSpecs::Weird.new(2)
c.clamp(one..two).should equal(c)
c.clamp(two..two).should equal(c)
c.clamp(one..three).should equal(c)
c.clamp(two..three).should equal(c)
end
it 'returns the minimum value of the range parameters if smaller than it' do
one = ComparableSpecs::WithOnlyCompareDefined.new(1)
two = ComparableSpecs::WithOnlyCompareDefined.new(2)
c = ComparableSpecs::Weird.new(0)
c.clamp(one..two).should equal(one)
end
it 'returns the maximum value of the range parameters if greater than it' do
one = ComparableSpecs::WithOnlyCompareDefined.new(1)
two = ComparableSpecs::WithOnlyCompareDefined.new(2)
c = ComparableSpecs::Weird.new(3)
c.clamp(one..two).should equal(two)
end
it 'raises an Argument error if the range parameter is exclusive' do
one = ComparableSpecs::WithOnlyCompareDefined.new(1)
two = ComparableSpecs::WithOnlyCompareDefined.new(2)
c = ComparableSpecs::Weird.new(3)
-> { c.clamp(one...two) }.should raise_error(ArgumentError)
end
end
end