mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
43 lines
1.3 KiB
Ruby
43 lines
1.3 KiB
Ruby
require_relative '../../spec_helper'
|
|
require_relative 'shared/arithmetic_coerce'
|
|
|
|
describe "Integer#-" do
|
|
it_behaves_like :integer_arithmetic_coerce_not_rescue, :-
|
|
|
|
context "fixnum" do
|
|
it "returns self minus the given Integer" do
|
|
(5 - 10).should == -5
|
|
(9237212 - 5_280).should == 9231932
|
|
|
|
(781 - 0.5).should == 780.5
|
|
(2_560_496 - bignum_value).should == -18446744073706991120
|
|
end
|
|
|
|
it "raises a TypeError when given a non-Integer" do
|
|
-> {
|
|
(obj = mock('10')).should_receive(:to_int).any_number_of_times.and_return(10)
|
|
13 - obj
|
|
}.should raise_error(TypeError)
|
|
-> { 13 - "10" }.should raise_error(TypeError)
|
|
-> { 13 - :symbol }.should raise_error(TypeError)
|
|
end
|
|
end
|
|
|
|
context "bignum" do
|
|
before :each do
|
|
@bignum = bignum_value(314)
|
|
end
|
|
|
|
it "returns self minus the given Integer" do
|
|
(@bignum - 9).should == 18446744073709551921
|
|
(@bignum - 12.57).should be_close(18446744073709551917.43, TOLERANCE)
|
|
(@bignum - bignum_value(42)).should == 272
|
|
end
|
|
|
|
it "raises a TypeError when given a non-Integer" do
|
|
-> { @bignum - mock('10') }.should raise_error(TypeError)
|
|
-> { @bignum - "10" }.should raise_error(TypeError)
|
|
-> { @bignum - :symbol }.should raise_error(TypeError)
|
|
end
|
|
end
|
|
end
|