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* For easier modifications of ruby/spec by MRI developers. * .gitignore: track changes under spec. * spec/mspec, spec/rubyspec: add in-tree mspec and ruby/spec. These files can therefore be updated like any other file in MRI. Instructions are provided in spec/README. [Feature #13156] [ruby-core:79246] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
76 lines
2.4 KiB
Ruby
76 lines
2.4 KiB
Ruby
require File.expand_path('../../../spec_helper', __FILE__)
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require File.expand_path('../fixtures/classes', __FILE__)
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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 presense 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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lambda { a.coerce(b) }.should raise_error(TypeError)
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end
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end
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it "calls #to_f to convert other if self responds to #to_f" do
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# Do not use NumericSpecs::Subclass here, because coerce checks the classes of the receiver
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# and arguments before calling #to_f.
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other = mock("numeric")
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lambda { @obj.coerce(other) }.should raise_error(TypeError)
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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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result = @obj.coerce(2.5)
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result.should == [2.5, 10.5]
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result.first.should be_kind_of(Float)
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result.last.should be_kind_of(Float)
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result = @obj.coerce(3)
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result.should == [3.0, 10.5]
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result.first.should be_kind_of(Float)
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result.last.should be_kind_of(Float)
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result = @obj.coerce("4.4")
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result.should == [4.4, 10.5]
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result.first.should be_kind_of(Float)
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result.last.should be_kind_of(Float)
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result = @obj.coerce(bignum_value)
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result.should == [bignum_value.to_f, 10.5]
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result.first.should be_kind_of(Float)
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result.last.should be_kind_of(Float)
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end
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it "raises a TypeError when passed nil" do
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lambda { @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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lambda { @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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lambda { @obj.coerce(:symbol) }.should raise_error(TypeError)
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end
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it "raises an ArgumentError when passed a String" do
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lambda { @obj.coerce("test") }.should raise_error(ArgumentError)
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end
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end
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