# encoding: utf-8
require 'spec_helper'

module BusinessCatalyst::CSV

  describe GenericTransformer do
    subject { GenericTransformer }
    it "calls to_s on input" do
      input = double("some input")
      input.should_receive(:to_s).and_return("string value")
      subject.transform(input).should eq("string value")
    end
    it "leaves nil alone" do
      subject.transform(nil).should be_nil
    end
  end

  describe ArrayTransformer do
    subject { ArrayTransformer }
    it "joins input with ';'" do
      subject.transform(["A", "B"]).should eq("A;B")
    end
    it "escapes semi-colons by converting to spaces" do
      subject.transform(["A;B", "C"]).should eq("A B;C")
    end
    it "returns nil when input is nil" do
      subject.transform(nil).should be_nil
    end
    it "passes scalar (non-array) input through" do
      subject.transform("A").should eq("A")
    end
    it "removes semi-colons in scalar input" do
      subject.transform("A;B").should eq("A B")
    end
  end

  describe BooleanTransformer do
    subject { BooleanTransformer }
    it "converts true to 'Y'" do
      subject.transform(true).should eq("Y")
    end
    it "converts false to 'N'" do
      subject.transform(false).should eq("N")
    end
    it "converts nil to 'N'" do
      subject.transform(nil).should eq("N")
    end
  end

  describe TemplateIDTransformer do
    subject { TemplateIDTransformer }

    context "with symbol" do
      it "converts :default to 0" do
        subject.transform(:default).should eq(0)
      end
      it "converts :none to -1" do
        subject.transform(:none).should eq(-1)
      end
      it "converts :parent to -2" do
        subject.transform(:parent).should eq(-2)
      end
      it "raises an error for any symbol other than :none and :parent" do
        expect { subject.transform(:test) }.to raise_error(InvalidInputError)
      end
    end

    context "with string" do
      it "does nothing" do
        subject.transform("1234").should eq("1234")
      end
    end

    context "with integer" do
      it "does nothing" do
        subject.transform(1234).should eq(1234)
      end
    end
  end

end