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require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/classes', __FILE__)
describe "Kernel#instance_variables" do
describe "immediate values" do
it "returns an empty array if no instance variables are defined" do
0.instance_variables.should == []
end
ruby_version_is ""..."1.9" do
it "returns the correct array if an instance variable is added" do
a = 0
a.instance_variable_set("@test", 1)
a.instance_variables.should == ["@test"]
end
end
ruby_version_is "1.9"..."2.0" do
it "returns the correct array if an instance variable is added" do
a = 0
a.instance_variable_set("@test", 1)
a.instance_variables.should == [:@test]
end
end
ruby_version_is "2.0" do
it "returns the correct array if an instance variable is added" do
a = 0
lambda{ a.instance_variable_set("@test", 1) }.should raise_error(RuntimeError)
end
end
end
describe "regular objects" do
it "returns an empty array if no instance variables are defined" do
Object.new.instance_variables.should == []
end
ruby_version_is ""..."1.9" do
it "returns the correct array if an instance variable is added" do
a = Object.new
a.instance_variable_set("@test", 1)
a.instance_variables.should == ["@test"]
end
end
ruby_version_is "1.9" do
it "returns the correct array if an instance variable is added" do
a = Object.new
a.instance_variable_set("@test", 1)
a.instance_variables.should == [:@test]
end
end
end
end
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