1 files changed, 28 insertions, 0 deletions
diff --git a/spec/ruby/core/tracepoint/parameters_spec.rb b/spec/ruby/core/tracepoint/parameters_spec.rb
new file mode 100644
index 0000000000..82aee3caa4
--- /dev/null
+++ b/spec/ruby/core/tracepoint/parameters_spec.rb
@@ -0,0 +1,28 @@
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+
+describe 'TracePoint#parameters' do
+  it 'returns the parameters of block' do
+    f = proc {|x, y, z| }
+    parameters = nil
+    TracePoint.new(:b_call) { |tp|
+      next unless TracePointSpec.target_thread?
+      parameters = tp.parameters
+    }.enable do
+      f.call
+      parameters.should == [[:opt, :x], [:opt, :y], [:opt, :z]]
+    end
+  end
+
+  it 'returns the parameters of lambda block' do
+    f = -> x, y, z { }
+    parameters = nil
+    TracePoint.new(:b_call) { |tp|
+      next unless TracePointSpec.target_thread?
+      parameters = tp.parameters
+    }.enable do
+      f.call(1, 2, 3)
+      parameters.should == [[:req, :x], [:req, :y], [:req, :z]]
+    end
+  end
+end