require File.expand_path(File.dirname(__FILE__) + '/spec_helper')

class Tester
  include ::Trigga::ParamFu
end

describe ::Trigga::ParamFu do
  before(:each) do
    @t = Tester.new
  end  
  
  describe "class methods" do
    
    describe "key_with_id" do
      it "should add '_id' onto the given symbol" do
        Tester.key_with_id(:blart).should == :blart_id
      end
    end
    
    describe "obj_or_id" do
      describe "when the given hash already contains :(given_key)_id" do
        it "should not change the value of that _id key" do
          @my_obj = mock("object")
          @my_obj.stub!(:id).and_return(456)
          @my_hash = {:my_key_id=>123, :my_obj=>@my_obj}
          Tester.obj_or_id( @my_hash, :my_key )
          @my_hash[:my_key_id].should == 123
        end
      end
      
      describe "when the given hash does not already contain :(given_key)_id" do
        
        describe "and the given hash contains the given key without an added _id" do
          it "should set the :(given_key)_id to the id of the object" do
            @mock_obj = mock("obj")
            @mock_obj.stub!(:id).and_return(123)
            Tester.obj_or_id( {:my_obj=>@mock_obj}, :my_obj ).should == 123
          end
        end
      end
    end
    
    describe "require_param" do
      context "when given a single key" do
        
        context "when key is not present in opts" do
          it "should raise an ArgumentError" do
            lambda{ Tester.require_param( {:key1=>'value1'}, :key2 ) }.should raise_error(ArgumentError)
          end
        end
        context "when key is present in opts" do
          it "should not raise an error" do
            lambda{ Tester.require_param( {:key1=>'value1'}, :key1 ) }.should_not raise_error(ArgumentError)
          end
        end
      end
      context "when given multiple keys" do
        context "when all keys are present" do
          it "should not raise an error" do
            lambda{ Tester.require_param( {:key1=>'value1', :key2=>'value2'}, :key2, :key1 ) }.should_not raise_error(ArgumentError)
          end
        end
        context "when at least one key is not present" do
          it "should raise an ArgumentError " do
            lambda{ Tester.require_param( {:key1=>'value1', :key2=>'value2'}, :key2, :key1, :key3 ) }.should raise_error(ArgumentError)
          end
        end
      end
    end
  
    describe "require_obj_or_id" do
      context "when the key is present" do
        it "should not raise an error" do
          lambda{ Tester.require_obj_or_id( {:obj_name=>'value1'}, :obj_name ) }.should_not raise_error(ArgumentError)
        end
      end
      context "when the key is not present" do
        context "when the key suffixed with _id is present" do
          it "should not raise an error" do
            lambda{ Tester.require_obj_or_id( {:obj_id=>'value1'}, :obj ) }.should_not raise_error(ArgumentError)
          end
        end
        context "when the key is not present even suffixed with _id" do
          it "should raise an error" do
            lambda{ Tester.require_obj_or_id( {:key1=>'value1', :key2_id=>123}, :key3 ) }.should raise_error(ArgumentError)
          end
        end
      end
    end
    
    describe "require_one_of" do
      context "when at least one of the given keys is contained in opts" do
        it "should not raise an error" do
          lambda{ Tester.require_one_of( {:obj=>'value1'}, :foo, :bar, :obj ) }.should_not raise_error(ArgumentError)          
        end
      end
      context "when none of the given keys are contained in opts" do
        it "should raise an error" do
          lambda{ Tester.require_one_of( {:obj=>'value1'}, :foo, :bar ) }.should raise_error(ArgumentError)          
        end
      end
    end
  end
  
  describe "instance_methods" do
    describe "require_obj_or_id" do
      it "should call the class method require_obj_or_id" do
        Tester.should_receive(:require_obj_or_id).with( {:key=>'val'}, :key )
        @t.require_obj_or_id( {:key=>'val'}, :key )
      end
    end
    
    describe "obj_or_id" do
      it "should call the class method obj_or_id" do
        Tester.should_receive(:obj_or_id).with( {:key=>'val'}, :key )
        @t.obj_or_id( {:key=>'val'}, :key )
      end
    end
  end
end