require File.expand_path('../../fixtures/encoded_strings', __FILE__)

describe :array_inspect, :shared => true do
  it "returns a string" do
    [1, 2, 3].send(@method).should be_an_instance_of(String)
  end

  it "returns '[]' for an empty Array" do
    [].send(@method).should == "[]"
  end

  it "calls inspect on its elements and joins the results with commas" do
    items = Array.new(3) do |i|
      obj = mock(i.to_s)
      obj.should_receive(:inspect).and_return(i.to_s)
      obj
    end
    items.send(@method).should == "[0, 1, 2]"
  end

  it "represents a recursive element with '[...]'" do
    ArraySpecs.recursive_array.send(@method).should == "[1, \"two\", 3.0, [...], [...], [...], [...], [...]]"
    ArraySpecs.head_recursive_array.send(@method).should == "[[...], [...], [...], [...], [...], 1, \"two\", 3.0]"
    ArraySpecs.empty_recursive_array.send(@method).should == "[[...]]"
  end

  it "taints the result if the Array is non-empty and tainted" do
    [1, 2].taint.send(@method).tainted?.should be_true
  end

  it "does not taint the result if the Array is tainted but empty" do
    [].taint.send(@method).tainted?.should be_false
  end

  it "taints the result if an element is tainted" do
    ["str".taint].send(@method).tainted?.should be_true
  end

  it "untrusts the result if the Array is untrusted" do
    [1, 2].untrust.send(@method).untrusted?.should be_true
  end

  it "does not untrust the result if the Array is untrusted but empty" do
    [].untrust.send(@method).untrusted?.should be_false
  end

  it "untrusts the result if an element is untrusted" do
    ["str".untrust].send(@method).untrusted?.should be_true
  end

  describe "with encoding" do
    before :each do
       @default_external_encoding = Encoding.default_external
    end

    after :each do
      Encoding.default_external = @default_external_encoding
    end

    it "returns a US-ASCII string for an empty Array" do
      [].send(@method).encoding.should == Encoding::US_ASCII
    end

    it "use the default external encoding if it is ascii compatible" do
      Encoding.default_external = Encoding.find('UTF-8')

      utf8 = "utf8".encode("UTF-8")
      jp   = "jp".encode("EUC-JP")
      array = [jp, utf8]

      array.inspect.encoding.name.should == "UTF-8"
    end

    it "use US-ASCII encoding if the default external encoding is not ascii compatible" do
      Encoding.default_external = Encoding.find('UTF-32')

      utf8 = "utf8".encode("UTF-8")
      jp   = "jp".encode("EUC-JP")
      array = [jp, utf8]

      array.inspect.encoding.name.should == "US-ASCII"
    end

    it "raises if inspected result is not default external encoding" do
      utf_16be = mock("utf_16be")
      utf_16be.should_receive(:inspect).and_return("utf_16be".encode!(Encoding::UTF_16BE))

      lambda { [utf_16be].send(@method) }.should raise_error(Encoding::CompatibilityError)
    end
  end
end
