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require 'bigdecimal'
describe :bigdecimal_eql, shared: true do
before :each do
@bg6543_21 = BigDecimal("6543.21")
@bg5667_19 = BigDecimal("5667.19")
@a = BigDecimal("1.0000000000000000000000000000000000000000005")
@b = BigDecimal("1.00000000000000000000000000000000000000000005")
@bigint = BigDecimal("1000.0")
@nan = BigDecimal("NaN")
@infinity = BigDecimal("Infinity")
@infinity_minus = BigDecimal("-Infinity")
end
it "tests for equality" do
@bg6543_21.send(@method, @bg6543_21).should == true
@a.send(@method, @a).should == true
@a.send(@method, @b).should == false
@bg6543_21.send(@method, @a).should == false
@bigint.send(@method, 1000).should == true
end
it "returns false for NaN as it is never equal to any number" do
@nan.send(@method, @nan).should == false
@a.send(@method, @nan).should == false
@nan.send(@method, @a).should == false
@nan.send(@method, @infinity).should == false
@nan.send(@method, @infinity_minus).should == false
@infinity.send(@method, @nan).should == false
@infinity_minus.send(@method, @nan).should == false
end
it "returns true for infinity values with the same sign" do
@infinity.send(@method, @infinity).should == true
@infinity.send(@method, BigDecimal("Infinity")).should == true
BigDecimal("Infinity").send(@method, @infinity).should == true
@infinity_minus.send(@method, @infinity_minus).should == true
@infinity_minus.send(@method, BigDecimal("-Infinity")).should == true
BigDecimal("-Infinity").send(@method, @infinity_minus).should == true
end
it "returns false for infinity values with different signs" do
@infinity.send(@method, @infinity_minus).should == false
@infinity_minus.send(@method, @infinity).should == false
end
it "returns false when infinite value compared to finite one" do
@infinity.send(@method, @a).should == false
@infinity_minus.send(@method, @a).should == false
@a.send(@method, @infinity).should == false
@a.send(@method, @infinity_minus).should == false
end
it "returns false when compared objects that can not be coerced into BigDecimal" do
@infinity.send(@method, nil).should == false
@bigint.send(@method, nil).should == false
@nan.send(@method, nil).should == false
end
end
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