diff options
Diffstat (limited to 'spec/ruby/core/io/binread_spec.rb')
-rw-r--r-- | spec/ruby/core/io/binread_spec.rb | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/spec/ruby/core/io/binread_spec.rb b/spec/ruby/core/io/binread_spec.rb new file mode 100644 index 0000000000..b592639f9d --- /dev/null +++ b/spec/ruby/core/io/binread_spec.rb @@ -0,0 +1,49 @@ +# -*- encoding: utf-8 -*- +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) + +describe "IO.binread" do + before :each do + @internal = Encoding.default_internal + + @fname = tmp('io_read.txt') + @contents = "1234567890" + touch(@fname) { |f| f.write @contents } + end + + after :each do + rm_r @fname + Encoding.default_internal = @internal + end + + it "reads the contents of a file" do + IO.binread(@fname).should == @contents + end + + it "reads the contents of a file up to a certain size when specified" do + IO.binread(@fname, 5).should == @contents.slice(0..4) + end + + it "reads the contents of a file from an offset of a specific size when specified" do + IO.binread(@fname, 5, 3).should == @contents.slice(3, 5) + end + + it "returns a String in ASCII-8BIT encoding" do + IO.binread(@fname).encoding.should == Encoding::ASCII_8BIT + end + + it "returns a String in ASCII-8BIT encoding regardless of Encoding.default_internal" do + Encoding.default_internal = Encoding::EUC_JP + IO.binread(@fname).encoding.should == Encoding::ASCII_8BIT + end + + it "raises an ArgumentError when not passed a valid length" do + lambda { IO.binread @fname, -1 }.should raise_error(ArgumentError) + end + + ruby_version_is "2.3" do # MRI leaks the fd on older versions + it "raises an Errno::EINVAL when not passed a valid offset" do + lambda { IO.binread @fname, 0, -1 }.should raise_error(Errno::EINVAL) + end + end +end |