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require_relative '../../spec_helper'
require_relative 'shared/mult'
require 'bigdecimal'
describe "BigDecimal#*" do
it_behaves_like :bigdecimal_mult, :*, []
end
describe "BigDecimal#*" do
before :each do
@three = BigDecimal("3")
@e3_minus = BigDecimal("3E-20001")
@e3_plus = BigDecimal("3E20001")
@e = BigDecimal("1.00000000000000000000123456789")
@one = BigDecimal("1")
end
it "multiply self with other" do
(@one * @one).should == @one
(@e3_minus * @e3_plus).should == BigDecimal("9")
# Can't do this till we implement **
# (@e3_minus * @e3_minus).should == @e3_minus ** 2
# So let's rewrite it as:
(@e3_minus * @e3_minus).should == BigDecimal("9E-40002")
(@e * @one).should == @e
end
describe "with Object" do
it "tries to coerce the other operand to self" do
object = mock("Object")
object.should_receive(:coerce).with(@e3_minus).and_return([@e3_minus, @e3_plus])
(@e3_minus * object).should == BigDecimal("9")
end
end
describe "with Rational" do
it "produces a BigDecimal" do
(@three * Rational(500, 2)).should == BigDecimal("0.75e3")
end
end
end
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