1 files changed, 62 insertions, 0 deletions
diff --git a/spec/ruby/core/proc/to_s_spec.rb b/spec/ruby/core/proc/to_s_spec.rb
new file mode 100644
index 0000000000..58a9aa76fb
--- /dev/null
+++ b/spec/ruby/core/proc/to_s_spec.rb
@@ -0,0 +1,62 @@
+require_relative '../../spec_helper'
+
+describe "Proc#to_s" do
+  describe "for a proc created with Proc.new" do
+    it "returns a description including file and line number" do
+      Proc.new { "hello" }.to_s.should =~ /^#<Proc:([^ ]*?) #{Regexp.escape __FILE__}:#{__LINE__ }>$/
+    end
+
+    it "has a binary encoding" do
+      Proc.new { "hello" }.to_s.encoding.should == Encoding::BINARY
+    end
+  end
+
+  describe "for a proc created with lambda" do
+    it "returns a description including '(lambda)' and including file and line number" do
+      -> { "hello" }.to_s.should =~ /^#<Proc:([^ ]*?) #{Regexp.escape __FILE__}:#{__LINE__ } \(lambda\)>$/
+    end
+
+    it "has a binary encoding" do
+      -> { "hello" }.to_s.encoding.should == Encoding::BINARY
+    end
+  end
+
+  describe "for a proc created with proc" do
+    it "returns a description including file and line number" do
+      proc { "hello" }.to_s.should =~ /^#<Proc:([^ ]*?) #{Regexp.escape __FILE__}:#{__LINE__ }>$/
+    end
+
+    it "has a binary encoding" do
+      proc { "hello" }.to_s.encoding.should == Encoding::BINARY
+    end
+  end
+
+  describe "for a proc created with UnboundMethod#to_proc" do
+    it "returns a description including '(lambda)' and optionally including file and line number" do
+      def hello; end
+      s = method("hello").to_proc.to_s
+      if s.include? __FILE__
+        s.should =~ /^#<Proc:([^ ]*?) #{Regexp.escape __FILE__}:#{__LINE__ - 3} \(lambda\)>$/
+      else
+        s.should =~ /^#<Proc:([^ ]*?) \(lambda\)>$/
+      end
+    end
+
+    it "has a binary encoding" do
+      def hello; end
+      method("hello").to_proc.to_s.encoding.should == Encoding::BINARY
+    end
+  end
+
+  describe "for a proc created with Symbol#to_proc" do
+    it "returns a description including '(&:symbol)'" do
+      proc = :foobar.to_proc
+      proc.to_s.should.include?('(&:foobar)')
+    end
+
+    it "has a binary encoding" do
+      proc = :foobar.to_proc
+      proc.to_s.encoding.should == Encoding::BINARY
+    end
+  end
+end