1 files changed, 43 insertions, 0 deletions
diff --git a/spec/ruby/core/argf/binmode_spec.rb b/spec/ruby/core/argf/binmode_spec.rb
new file mode 100644
index 0000000000..5288e3199d
--- /dev/null
+++ b/spec/ruby/core/argf/binmode_spec.rb
@@ -0,0 +1,43 @@
+require_relative '../../spec_helper'
+
+describe "ARGF.binmode" do
+  before :each do
+    @file1    = fixture __FILE__, "file1.txt"
+    @file2    = fixture __FILE__, "file2.txt"
+    @bin_file = fixture __FILE__, "bin_file.txt"
+  end
+
+  it "returns self" do
+    argf [@bin_file] do
+      @argf.binmode.should.equal? @argf
+    end
+  end
+
+  platform_is :windows do
+    it "puts reading into binmode" do
+      argf [@bin_file, @bin_file] do
+        @argf.gets.should == "test\n"
+        @argf.binmode
+        @argf.gets.should == "test\r\n"
+      end
+    end
+
+    it "puts all subsequent streams reading through ARGF into binmode" do
+      argf [@bin_file, @bin_file] do
+        @argf.binmode
+        @argf.gets.should == "test\r\n"
+        @argf.gets.should == "test\r\n"
+      end
+    end
+  end
+
+  it "sets the file's encoding to BINARY" do
+    argf [@bin_file, @file1] do
+      @argf.binmode
+      @argf.should.binmode?
+      @argf.gets.encoding.should == Encoding::BINARY
+      @argf.skip
+      @argf.read.encoding.should == Encoding::BINARY
+    end
+  end
+end