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require File.expand_path('../../../spec_helper', __FILE__)
describe "Fixnum#div with a Fixnum" do
it "returns self divided by the given argument as an Integer" do
2.div(2).should == 1
1.div(2).should == 0
5.div(2).should == 2
end
end
describe "Fixnum#div" do
it "rounds towards -inf" do
8192.div(10).should == 819
8192.div(-10).should == -820
(-8192).div(10).should == -820
(-8192).div(-10).should == 819
end
it "coerces self and the given argument to Floats and returns self divided by other as Fixnum" do
1.div(0.2).should == 5
1.div(0.16).should == 6
1.div(0.169).should == 5
-1.div(50.4).should == -1
1.div(bignum_value).should == 0
end
ruby_version_is ""..."1.9" do
it "raises a FloatDomainError when the given argument is 0 and a Float" do
lambda { 0.div(0.0) }.should raise_error(FloatDomainError)
lambda { 10.div(0.0) }.should raise_error(FloatDomainError)
lambda { -10.div(0.0) }.should raise_error(FloatDomainError)
end
end
ruby_version_is "1.9" do
it "raises a ZeroDivisionError when the given argument is 0 and a Float" do
lambda { 0.div(0.0) }.should raise_error(ZeroDivisionError)
lambda { 10.div(0.0) }.should raise_error(ZeroDivisionError)
lambda { -10.div(0.0) }.should raise_error(ZeroDivisionError)
end
end
it "raises a ZeroDivisionError when the given argument is 0" do
lambda { 13.div(0) }.should raise_error(ZeroDivisionError)
end
it "raises a TypeError when given a non-Integer" do
lambda {
(obj = mock('10')).should_receive(:to_int).any_number_of_times.and_return(10)
13.div(obj)
}.should raise_error(TypeError)
lambda { 5.div("2") }.should raise_error(TypeError)
end
end
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