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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 multiplied by the given Integer" do
(4923 * 2).should == 9846
(1342177 * 800).should == 1073741600
(65536 * 65536).should == 4294967296
(256 * bignum_value).should == 4722366482869645213696
(6712 * 0.25).should == 1678.0
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(772)
end
it "returns self multiplied by the given Integer" do
(@bignum * (1/bignum_value(0xffff).to_f)).should be_close(1.0, TOLERANCE)
(@bignum * (1/bignum_value(0xffff).to_f)).should be_close(1.0, TOLERANCE)
(@bignum * 10).should == 184467440737095523880
(@bignum * (@bignum - 40)).should == 340282366920938491207277694290934407024
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
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