[Truffle] New attachment spec that attachments are only run once.

jruby · Feb 15, 2016 · f7e243b · f7e243b
1 parent 49b4350
commit f7e243b
Showing 1 changed file with 11 additions and 0 deletions.
diff --git a/spec/truffle/specs/truffle/attachments/attach_spec.rb b/spec/truffle/specs/truffle/attachments/attach_spec.rb
@@ -35,6 +35,17 @@ def fixture
     fixture.should == 14
     scratch[0].should be_true
   end
+
+  it "only runs the block once each time the line is executed" do
+    scratch = []
+
+    @attachments << Truffle::Attachments.attach(__FILE__, 14) do
+      scratch << :run
+    end
+
+    fixture.should == 14
+    scratch.size.should == 1
+  end
 
   it "allows multiple blocks to be installed on the same line and runs both of them" do
     scratch = []