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require_relative '../../spec_helper'
require "ostruct"
describe "OpenStruct#method_missing when called with a method name ending in '='" do
before :each do
@os = OpenStruct.new
end
it "raises an ArgumentError when not passed any additional arguments" do
lambda { @os.method_missing(:test=) }.should raise_error(ArgumentError)
end
it "raises a TypeError when self is frozen" do
@os.freeze
lambda { @os.method_missing(:test=, "test") }.should raise_error(RuntimeError)
end
it "creates accessor methods" do
@os.method_missing(:test=, "test")
@os.respond_to?(:test=).should be_true
@os.respond_to?(:test).should be_true
@os.test.should == "test"
@os.test = "changed"
@os.test.should == "changed"
end
end
describe "OpenStruct#method_missing when passed additional arguments" do
it "raises a NoMethodError when the key does not exist" do
os = OpenStruct.new
lambda { os.method_missing(:test, 1, 2, 3) }.should raise_error(NoMethodError)
end
ruby_version_is "2.7" do
it "raises an ArgumentError when the key exists" do
os = OpenStruct.new(test: 20)
lambda { os.method_missing(:test, 1, 2, 3) }.should raise_error(ArgumentError)
end
end
end
describe "OpenStruct#method_missing when not passed any additional arguments" do
it "returns the value for the passed method from the method/value table" do
os = OpenStruct.new(age: 20)
os.method_missing(:age).should eql(20)
os.method_missing(:name).should be_nil
end
end
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