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require_relative '../../spec_helper'
describe "Thread#thread_variable_set" do
before :each do
@t = Thread.new { }
end
after :each do
@t.join
end
it "returns the value set" do
@t.thread_variable_set(:a, 2).should == 2
end
it "sets a value that will be returned by #thread_variable_get" do
@t.thread_variable_set(:a, 49)
@t.thread_variable_get(:a).should == 49
end
it "sets a value private to self" do
@t.thread_variable_set(:thread_variable_get_spec, 82)
@t.thread_variable_get(:thread_variable_get_spec).should == 82
Thread.current.thread_variable_get(:thread_variable_get_spec).should be_nil
end
it "accepts String and Symbol keys interchangeably" do
@t.thread_variable_set('a', 49)
@t.thread_variable_get('a').should == 49
@t.thread_variable_set(:a, 50)
@t.thread_variable_get('a').should == 50
end
it "converts a key that is neither String nor Symbol with #to_str" do
key = mock('key')
key.should_receive(:to_str).and_return('a')
@t.thread_variable_set(key, 49)
@t.thread_variable_get(:a).should == 49
end
it "removes a key if the value is nil" do
@t.thread_variable_set(:a, 52)
@t.thread_variable_set(:a, nil)
@t.thread_variable?(:a).should be_false
end
it "raises a FrozenError if the thread is frozen" do
@t.freeze
-> { @t.thread_variable_set(:a, 1) }.should raise_error(FrozenError, "can't modify frozen thread locals")
end
it "raises a TypeError if the key is neither Symbol nor String, nor responds to #to_str" do
-> { @t.thread_variable_set(123, 1) }.should raise_error(TypeError, /123 is not a symbol/)
end
it "does not try to convert the key with #to_sym" do
key = mock('key')
key.should_not_receive(:to_sym)
-> { @t.thread_variable_set(key, 42) }.should raise_error(TypeError, /#{Regexp.quote(key.inspect)} is not a symbol/)
end
end
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