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29 lines
979 B
Ruby
29 lines
979 B
Ruby
require_relative '../../spec_helper'
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require 'bigdecimal'
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describe :rational_coerce, shared: true do
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it "returns the passed argument, self as Float, when given a Float" do
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result = Rational(3, 4).coerce(1.0)
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result.should == [1.0, 0.75]
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result.first.is_a?(Float).should be_true
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result.last.is_a?(Float).should be_true
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end
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it "returns the passed argument, self as Rational, when given an Integer" do
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result = Rational(3, 4).coerce(10)
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result.should == [Rational(10, 1), Rational(3, 4)]
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result.first.is_a?(Rational).should be_true
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result.last.is_a?(Rational).should be_true
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end
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it "returns [argument, self] when given a Rational" do
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Rational(3, 7).coerce(Rational(9, 2)).should == [Rational(9, 2), Rational(3, 7)]
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end
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it "raises an error when passed a BigDecimal" do
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-> {
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Rational(500, 3).coerce(BigDecimal('166.666666666'))
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}.should raise_error(TypeError, /BigDecimal can't be coerced into Rational/)
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end
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end
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