mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
39 lines
1.6 KiB
Ruby
39 lines
1.6 KiB
Ruby
require_relative '../../spec_helper'
|
|
|
|
ruby_version_is '2.5' do
|
|
describe "Integer#allbits?" do
|
|
it "returns true iff all the bits of the argument are set in the receiver" do
|
|
42.allbits?(42).should == true
|
|
0b1010_1010.allbits?(0b1000_0010).should == true
|
|
0b1010_1010.allbits?(0b1000_0001).should == false
|
|
0b1000_0010.allbits?(0b1010_1010).should == false
|
|
(0b1010_1010 | bignum_value).allbits?(0b1000_0010 | bignum_value).should == true
|
|
(0b1010_1010 | bignum_value).allbits?(0b1000_0001 | bignum_value).should == false
|
|
(0b1000_0010 | bignum_value).allbits?(0b1010_1010 | bignum_value).should == false
|
|
end
|
|
|
|
it "handles negative values using two's complement notation" do
|
|
(~0b1).allbits?(42).should == true
|
|
(-42).allbits?(-42).should == true
|
|
(~0b1010_1010).allbits?(~0b1110_1011).should == true
|
|
(~0b1010_1010).allbits?(~0b1000_0010).should == false
|
|
(~(0b1010_1010 | bignum_value)).allbits?(~(0b1110_1011 | bignum_value)).should == true
|
|
(~(0b1010_1010 | bignum_value)).allbits?(~(0b1000_0010 | bignum_value)).should == false
|
|
end
|
|
|
|
it "coerces the rhs using to_int" do
|
|
obj = mock("the int 0b10")
|
|
obj.should_receive(:to_int).and_return(0b10)
|
|
0b110.allbits?(obj).should == true
|
|
end
|
|
|
|
it "raises a TypeError when given a non-Integer" do
|
|
-> {
|
|
(obj = mock('10')).should_receive(:coerce).any_number_of_times.and_return([42,10])
|
|
13.allbits?(obj)
|
|
}.should raise_error(TypeError)
|
|
-> { 13.allbits?("10") }.should raise_error(TypeError)
|
|
-> { 13.allbits?(:symbol) }.should raise_error(TypeError)
|
|
end
|
|
end
|
|
end
|