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59 lines
1.9 KiB
Ruby
59 lines
1.9 KiB
Ruby
require_relative '../../spec_helper'
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require_relative 'fixtures/classes'
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describe "Numeric#coerce" do
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before :each do
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@obj = NumericSpecs::Subclass.new
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@obj.should_receive(:to_f).any_number_of_times.and_return(10.5)
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end
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it "returns [other, self] if self and other are instances of the same class" do
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a = NumericSpecs::Subclass.new
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b = NumericSpecs::Subclass.new
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a.coerce(b).should == [b, a]
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end
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# I (emp) think that this behavior is actually a bug in MRI. It's here as documentation
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# of the behavior until we find out if it's a bug.
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quarantine! do
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it "considers the presence of a metaclass when checking the class of the objects" do
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a = NumericSpecs::Subclass.new
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b = NumericSpecs::Subclass.new
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# inject a metaclass on a
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class << a; true; end
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# watch it explode
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-> { a.coerce(b) }.should raise_error(TypeError)
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end
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end
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it "returns [other.to_f, self.to_f] if self and other are instances of different classes" do
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@obj.coerce(2.5).should == [2.5, 10.5]
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@obj.coerce(3).should == [3.0, 10.5]
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@obj.coerce("4.4").should == [4.4, 10.5]
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@obj.coerce(bignum_value).should == [bignum_value.to_f, 10.5]
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end
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it "raise TypeError if they are instances of different classes and other does not respond to #to_f" do
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other = mock("numeric")
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-> { @obj.coerce(other) }.should raise_error(TypeError)
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end
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it "raises a TypeError when passed nil" do
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-> { @obj.coerce(nil) }.should raise_error(TypeError)
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end
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it "raises a TypeError when passed a boolean" do
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-> { @obj.coerce(false) }.should raise_error(TypeError)
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end
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it "raises a TypeError when passed a Symbol" do
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-> { @obj.coerce(:symbol) }.should raise_error(TypeError)
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end
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it "raises an ArgumentError when passed a non-numeric String" do
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-> { @obj.coerce("test") }.should raise_error(ArgumentError)
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end
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end
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