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89 lines
2.8 KiB
Ruby
89 lines
2.8 KiB
Ruby
require_relative '../../spec_helper'
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require_relative 'shared/arithmetic_coerce'
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describe "Integer#/" do
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it_behaves_like :integer_arithmetic_coerce_not_rescue, :/
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context "fixnum" do
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it "returns self divided by the given argument" do
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(2 / 2).should == 1
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(3 / 2).should == 1
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end
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it "supports dividing negative numbers" do
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(-1 / 10).should == -1
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end
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it "returns result the same class as the argument" do
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(3 / 2).should == 1
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(3 / 2.0).should == 1.5
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(3 / Rational(2, 1)).should == Rational(3, 2)
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end
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it "raises a ZeroDivisionError if the given argument is zero and not a Float" do
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-> { 1 / 0 }.should raise_error(ZeroDivisionError)
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end
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it "does NOT raise ZeroDivisionError if the given argument is zero and is a Float" do
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(1 / 0.0).to_s.should == 'Infinity'
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(-1 / 0.0).to_s.should == '-Infinity'
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end
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it "coerces fixnum and return self divided by other" do
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(-1 / 50.4).should be_close(-0.0198412698412698, TOLERANCE)
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(1 / bignum_value).should == 0
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end
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it "raises a TypeError when given a non-Integer" do
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-> { 13 / mock('10') }.should raise_error(TypeError)
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-> { 13 / "10" }.should raise_error(TypeError)
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-> { 13 / :symbol }.should raise_error(TypeError)
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end
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end
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context "bignum" do
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before :each do
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@bignum = bignum_value(88)
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end
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it "returns self divided by other" do
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(@bignum / 4).should == 2305843009213693974
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(@bignum / bignum_value(2)).should == 1
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(-(10**50) / -(10**40 + 1)).should == 9999999999
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((10**50) / (10**40 + 1)).should == 9999999999
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((-10**50) / (10**40 + 1)).should == -10000000000
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((10**50) / -(10**40 + 1)).should == -10000000000
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end
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it "returns self divided by Float" do
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not_supported_on :opal do
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(bignum_value(88) / 4294967295.0).should be_close(2147483648.5, TOLERANCE)
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end
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(bignum_value(88) / 4294967295.5).should be_close(2147483648.25, TOLERANCE)
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end
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it "returns result the same class as the argument" do
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(@bignum / 4).should == 2305843009213693974
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(@bignum / 4.0).should be_close(2305843009213693974, TOLERANCE)
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(@bignum / Rational(4, 1)).should == Rational(2305843009213693974, 1)
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end
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it "does NOT raise ZeroDivisionError if other is zero and is a Float" do
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(bignum_value / 0.0).to_s.should == 'Infinity'
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(bignum_value / -0.0).to_s.should == '-Infinity'
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end
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it "raises a ZeroDivisionError if other is zero and not a Float" do
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-> { @bignum / 0 }.should raise_error(ZeroDivisionError)
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end
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it "raises a TypeError when given a non-numeric" do
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-> { @bignum / mock('10') }.should raise_error(TypeError)
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-> { @bignum / "2" }.should raise_error(TypeError)
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-> { @bignum / :symbol }.should raise_error(TypeError)
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end
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end
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end
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