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ruby--ruby/spec/ruby/library/bigdecimal/gte_spec.rb

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require_relative '../../spec_helper'
require 'bigdecimal'
describe "BigDecimal#>=" do
before :each do
@zero = BigDecimal("0")
@zero_pos = BigDecimal("+0")
@zero_neg = BigDecimal("-0")
@mixed = BigDecimal("1.23456789")
@pos_int = BigDecimal("2E5555")
@neg_int = BigDecimal("-2E5555")
@pos_frac = BigDecimal("2E-9999")
@neg_frac = BigDecimal("-2E-9999")
@int_mock = mock('123')
class << @int_mock
def coerce(other)
return [other, BigDecimal('123')]
end
def >= (other)
BigDecimal('123') >= other
end
end
@values = [@mixed, @pos_int, @neg_int, @pos_frac, @neg_frac,
-2**32, -2**31, -2**30, -2**16, -2**8, -100, -10, -1,
@zero , 1, 2, 10, 10.5, 2**8, 2**16, 2**32, @int_mock, @zero_pos, @zero_neg]
@infinity = BigDecimal("Infinity")
@infinity_neg = BigDecimal("-Infinity")
@float_infinity = Float::INFINITY
@float_infinity_neg = -Float::INFINITY
@nan = BigDecimal("NaN")
end
it "returns true if a >= b" do
one = BigDecimal("1")
two = BigDecimal("2")
frac_1 = BigDecimal("1E-99999")
frac_2 = BigDecimal("0.9E-99999")
(@zero >= one).should == false
(two >= @zero).should == true
(frac_2 >= frac_1).should == false
(two >= two).should == true
(frac_1 >= frac_1).should == true
(@neg_int >= @pos_int).should == false
(@pos_int >= @neg_int).should == true
(@neg_int >= @pos_frac).should == false
(@pos_frac >= @neg_int).should == true
(@zero >= @zero_pos).should == true
(@zero >= @zero_neg).should == true
(@zero_neg >= @zero_pos).should == true
(@zero_pos >= @zero_neg).should == true
end
it "properly handles infinity values" do
@values.each { |val|
(val >= @infinity).should == false
(@infinity >= val).should == true
(val >= @infinity_neg).should == true
(@infinity_neg >= val).should == false
}
(@infinity >= @infinity).should == true
(@infinity_neg >= @infinity_neg).should == true
(@infinity >= @infinity_neg).should == true
(@infinity_neg >= @infinity).should == false
end
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it "properly handles Float infinity values" do
@values.each { |val|
(val >= @float_infinity).should == false
(@float_infinity >= val).should == true
(val >= @float_infinity_neg).should == true
(@float_infinity_neg >= val).should == false
}
end
it "properly handles NaN values" do
@values += [@infinity, @infinity_neg, @nan]
@values.each { |val|
(@nan >= val).should == false
(val >= @nan).should == false
}
end
it "returns nil if the argument is nil" do
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-> {@zero >= nil }.should raise_error(ArgumentError)
-> {@infinity >= nil }.should raise_error(ArgumentError)
-> {@infinity_neg >= nil }.should raise_error(ArgumentError)
-> {@mixed >= nil }.should raise_error(ArgumentError)
-> {@pos_int >= nil }.should raise_error(ArgumentError)
-> {@neg_frac >= nil }.should raise_error(ArgumentError)
end
end