require File.expand_path('../../../spec_helper', __FILE__)

describe "File.umask" do
  before :each do
    @orig_umask = File.umask
    @file = tmp('test.txt')
    touch @file
  end

  after :each do
    rm_r @file
    File.umask(@orig_umask)
  end

  it "returns a Fixnum" do
    File.umask.should be_kind_of(Fixnum)
  end

  platform_is_not :windows do
    it "returns the current umask value for the process" do
      File.umask(022)
      File.umask(006).should == 022
      File.umask.should == 006
    end

    it "invokes to_int on non-integer argument" do
      (obj = mock(022)).should_receive(:to_int).any_number_of_times.and_return(022)
      File.umask(obj)
      File.umask(obj).should == 022
    end
  end

  it "always succeeds with any integer values" do
    vals = [-2**30, -2**16, -2**8, -2,
      -1.5, -1, 0.5, 0, 1, 2, 7.77777, 16, 32, 64, 2**8, 2**16, 2**30]
    vals.each { |v|
      lambda { File.umask(v) }.should_not raise_error
    }
  end

  it "raises ArgumentError when more than one argument is provided" do
    lambda { File.umask(022, 022) }.should raise_error(ArgumentError)
  end

  platform_is :windows do
    it "returns the current umask value for this process (basic)" do
      File.umask.should == 0
      File.umask(022).should == 0
      File.umask(044).should == 0
    end

    # The value used here is the value of _S_IWRITE.
    it "returns the current umask value for this process" do
      File.umask(0000200)
      File.umask.should == 0000200
      File.umask(0006)
      File.umask.should == 0
    end
  end
end