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Diffstat (limited to 'spec/ruby/core/thread/priority_spec.rb')
-rw-r--r-- | spec/ruby/core/thread/priority_spec.rb | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/spec/ruby/core/thread/priority_spec.rb b/spec/ruby/core/thread/priority_spec.rb new file mode 100644 index 0000000000..b986fb7a0d --- /dev/null +++ b/spec/ruby/core/thread/priority_spec.rb @@ -0,0 +1,68 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) + +describe "Thread#priority" do + before do + @current_priority = Thread.current.priority + ThreadSpecs.clear_state + @thread = Thread.new { Thread.pass until ThreadSpecs.state == :exit } + end + + after do + ThreadSpecs.state = :exit + @thread.join + end + + it "inherits the priority of the current thread while running" do + @thread.alive?.should be_true + @thread.priority.should == @current_priority + end + + it "maintain the priority of the current thread after death" do + ThreadSpecs.state = :exit + @thread.join + @thread.alive?.should be_false + @thread.priority.should == @current_priority + end + + it "returns an integer" do + @thread.priority.should be_kind_of(Integer) + end +end + +describe "Thread#priority=" do + before do + ThreadSpecs.clear_state + @thread = Thread.new {} + end + + after do + @thread.join + end + + describe "when set with an integer" do + it "returns an integer" do + value = (@thread.priority = 3) + value.should == 3 + end + + it "clamps the priority to -3..3" do + @thread.priority = 42 + @thread.priority.should == 3 + @thread.priority = -42 + @thread.priority.should == -3 + end + end + + describe "when set with a non-integer" do + it "raises a type error" do + lambda{ @thread.priority = Object.new }.should raise_error(TypeError) + end + end + + it "sets priority even when the thread has died" do + @thread.join + @thread.priority = 3 + @thread.priority.should == 3 + end +end |