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require File.expand_path('../../../spec_helper', __FILE__)
describe "Fixnum#&" do
it "returns self bitwise AND other" do
(256 & 16).should == 0
(2010 & 5).should == 0
(65535 & 1).should == 1
(0xffff & bignum_value + 0xffff_ffff).should == 65535
end
it "returns self bitwise AND a Bignum" do
(-1 & 2**64).should == 18446744073709551616
end
ruby_version_is ""..."1.9" do
ruby_bug "#", "1.8.6" do
it "doesn't raise an error if passed a Float out of Fixnum range" do
lambda { 1 & bignum_value(10000).to_f }.should_not raise_error()
lambda { 1 & -bignum_value(10000).to_f }.should_not raise_error()
end
end
ruby_bug "#", "1.8.6" do
it "coerces arguments correctly even if it is a Bignum" do
obj = mock("fixnum bit and large value")
obj.should_receive(:to_int).and_return(8000_0000_0000_0000_0000)
(3 & obj).should == 0
end
end
it "converts a Float to an Integer" do
(3 & 2.4).should == 2
end
end
ruby_version_is "1.9" do
it "raises a TypeError when passed a Float" do
lambda { (3 & 3.4) }.should raise_error(TypeError)
end
end
ruby_version_is ""..."1.9.4" do
it "calls #to_int to convert an object to an Integer" do
obj = mock("fixnum bit and")
obj.should_receive(:to_int).and_return(2)
(3 & obj).should == 2
end
it "raises a TypeError if #to_int does not return an Integer" do
obj = mock("fixnum bit and")
obj.should_receive(:to_int).and_return("1")
lambda { 3 & obj }.should raise_error(TypeError)
end
it "raises a TypeError if the object does not respond to #to_int" do
obj = mock("fixnum bit and")
lambda { 3 & obj }.should raise_error(TypeError)
end
end
ruby_version_is "1.9.4" do
it "raises a TypeError and does not call #to_int when defined on an object" do
obj = mock("fixnum bit and")
obj.should_not_receive(:to_int)
lambda { 3 & obj }.should raise_error(TypeError)
end
end
end
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