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require File.expand_path('../../../spec_helper', __FILE__)
describe "Float#<=>" do
it "returns -1, 0, 1 when self is less than, equal, or greater than other" do
(1.5 <=> 5).should == -1
(2.45 <=> 2.45).should == 0
((bignum_value*1.1) <=> bignum_value).should == 1
end
it "returns nil when either argument is NaN" do
(nan_value <=> 71.2).should be_nil
(1771.176 <=> nan_value).should be_nil
end
it "returns nil when the given argument is not a Float" do
(1.0 <=> "1").should be_nil
end
# TODO: Remove duplicate ruby_bug guards when ruby_bug is fixed.
ruby_bug "[ruby-dev:38672] [Bug #1645]", "1.8.7" do
# The 4 tests below are taken from matz's revision 23730 for Ruby trunk
#
it "returns 1 when self is Infinity and other is a Bignum" do
(infinity_value <=> Float::MAX.to_i*2).should == 1
end
it "returns -1 when self is negative and other is Infinty" do
(-Float::MAX.to_i*2 <=> infinity_value).should == -1
end
it "returns -1 when self is -Infinity and other is negative" do
(-infinity_value <=> -Float::MAX.to_i*2).should == -1
end
it "returns 1 when self is negative and other is -Infinity" do
(-Float::MAX.to_i*2 <=> -infinity_value).should == 1
end
end
ruby_bug "[ruby-dev:38672] [Bug #1645]", "1.8.7.302" do
# The 4 tests below are taken from matz's revision 23730 for Ruby trunk
#
it "returns 1 when self is Infinity and other is a Bignum" do
(infinity_value <=> Float::MAX.to_i*2).should == 1
end
it "returns -1 when self is negative and other is Infinty" do
(-Float::MAX.to_i*2 <=> infinity_value).should == -1
end
it "returns -1 when self is -Infinity and other is negative" do
(-infinity_value <=> -Float::MAX.to_i*2).should == -1
end
it "returns 1 when self is negative and other is -Infinity" do
(-Float::MAX.to_i*2 <=> -infinity_value).should == 1
end
end
end
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