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

describe Barometer::Measurement do
  describe "when initialized" do
    before(:each) do
      @measurement = Barometer::Measurement.new
    end

    it "responds to source" do
      @measurement.source.should be_nil
    end

    it "stores the source" do
      source = :wunderground
      measurement = Barometer::Measurement.new(source)
      measurement.source.should_not be_nil
      measurement.source.should == source
    end

    it "responds to utc_time_stamp" do
      @measurement.utc_time_stamp.should be_nil
    end

    it "responds to current" do
      @measurement.current.should be_nil
    end

    it "responds to forecast (and defaults to an empty Array)" do
      @measurement.forecast.should be_nil
    end

    it "responds to timezone" do
      @measurement.timezone.should be_nil
    end

    it "responds to station" do
      @measurement.station.should be_nil
    end

    it "responds to location" do
      @measurement.location.should be_nil
    end

    it "responds to success" do
      @measurement.success.should be_false
    end

    it "responds to current?" do
      @measurement.current?.should be_true
    end

    it "responds to metric" do
      @measurement.metric.should be_true
    end

    it "responds to weight" do
      @measurement.weight.should == 1
    end

    it "responds to links" do
      @measurement.links.should == {}
    end

    it "responds to measured_at" do
      @measurement.measured_at.should be_nil
    end
  end

  describe "when writing data" do
    before(:each) do
      @measurement = Barometer::Measurement.new
    end

    it "only accepts Symbol for source" do
      invalid_data = 1
      invalid_data.class.should_not == Symbol
      lambda { @measurement.source = invalid_data }.should raise_error(ArgumentError)

      valid_data = :valid
      valid_data.class.should == Symbol
      lambda { @measurement.source = valid_data }.should_not raise_error(ArgumentError)
    end

    it "only accepts Time for utc_time_stamp" do
      invalid_data = 1
      invalid_data.class.should_not == Time
      lambda { @measurement.utc_time_stamp = invalid_data }.should raise_error(ArgumentError)

      valid_data = Time.now.utc
      valid_data.class.should == Time
      lambda { @measurement.utc_time_stamp = valid_data }.should_not raise_error(ArgumentError)
    end

    it "only accepts Measurement::Result for current" do
      invalid_data = "invalid"
      invalid_data.class.should_not == Barometer::Measurement::Result
      lambda { @measurement.current = invalid_data }.should raise_error(ArgumentError)

      valid_data = Barometer::Measurement::Result.new
      valid_data.class.should == Barometer::Measurement::Result
      lambda { @measurement.current = valid_data }.should_not raise_error(ArgumentError)
    end

    it "only accepts Data::ResultArray for forecast" do
      invalid_data = 1
      invalid_data.class.should_not == Barometer::Measurement::ResultArray
      lambda { @measurement.forecast = invalid_data }.should raise_error(ArgumentError)

      valid_data = Barometer::Measurement::ResultArray.new
      valid_data.class.should == Barometer::Measurement::ResultArray
      lambda { @measurement.forecast = valid_data }.should_not raise_error(ArgumentError)
    end

    it "only accepts Data::Zone for timezone" do
      invalid_data = 1
      invalid_data.class.should_not == Data::Zone
      lambda { @measurement.timezone = invalid_data }.should raise_error(ArgumentError)

      valid_data = Data::Zone.new("Europe/Paris")
      valid_data.class.should == Data::Zone
      lambda { @measurement.timezone = valid_data }.should_not raise_error(ArgumentError)
    end

    it "only accepts Data::Location for station" do
      invalid_data = 1
      invalid_data.class.should_not == Data::Location
      lambda { @measurement.station = invalid_data }.should raise_error(ArgumentError)

      valid_data = Data::Location.new
      valid_data.class.should == Data::Location
      lambda { @measurement.station = valid_data }.should_not raise_error(ArgumentError)
    end

    it "only accepts Data::Location for location" do
      invalid_data = 1
      invalid_data.class.should_not == Data::Location
      lambda { @measurement.location = invalid_data }.should raise_error(ArgumentError)

      valid_data = Data::Location.new
      valid_data.class.should == Data::Location
      lambda { @measurement.location = valid_data }.should_not raise_error(ArgumentError)
    end

    it "only accepts Fixnum for weight" do
      invalid_data = "test"
      invalid_data.class.should_not == Fixnum
      lambda { @measurement.weight = invalid_data }.should raise_error(ArgumentError)

      valid_data = 1
      valid_data.class.should == Fixnum
      lambda { @measurement.weight = valid_data }.should_not raise_error(ArgumentError)
    end

    it "only accepts Array for links" do
      invalid_data = 1
      invalid_data.class.should_not == Hash
      lambda { @measurement.links = invalid_data }.should raise_error(ArgumentError)

      valid_data = {1 => nil}
      valid_data.class.should == Hash
      lambda { @measurement.links = valid_data }.should_not raise_error(ArgumentError)
    end

    it "only accepts Data::LocalTime for measured_at" do
      invalid_data = 1
      invalid_data.class.should_not == Data::LocalTime
      lambda { @measurement.measured_at = invalid_data }.should raise_error(ArgumentError)

      valid_data = Data::LocalTime.new
      valid_data.class.should == Data::LocalTime
      lambda { @measurement.measured_at = valid_data }.should_not raise_error(ArgumentError)
    end
  end

  describe "and the helpers" do
    before(:each) do
      @measurement = Barometer::Measurement.new
    end

    it "changes state to successful (if successful)" do
      @measurement.success.should be_false
      @measurement.success!
      @measurement.utc_time_stamp.should be_nil
      @measurement.current.should be_nil
      @measurement.success.should be_false

      @measurement.current = Barometer::Measurement::Result.new
      @measurement.current.temperature = Data::Temperature.new
      @measurement.current.temperature.c = 10
      @measurement.utc_time_stamp.should_not be_nil
      @measurement.success!
      @measurement.success.should be_true
    end

    it "returns successful state" do
      @measurement.current = Barometer::Measurement::Result.new
      @measurement.current.temperature = Data::Temperature.new
      @measurement.current.temperature.c = 10
      @measurement.success!
      @measurement.success.should be_true
      @measurement.success?.should be_true
    end

    it "returns non-successful state" do
      @measurement.success.should be_false
      @measurement.success?.should be_false
    end

    it "stamps the utc_time_stamp" do
      @measurement.utc_time_stamp.should be_nil
      @measurement.stamp!
      @measurement.utc_time_stamp.should_not be_nil
    end

    it "indicates if current" do
      @measurement.current.should be_nil
      @measurement.current?.should be_true

      @measurement.current = Barometer::Measurement::Result.new
      @measurement.current.current_at.should be_nil
      @measurement.current?.should be_true

      @measurement.current.current_at = Data::LocalTime.new(9,0,0)
      @measurement.current?.should be_true
      @measurement.current?("9:00 am").should be_true
    end

    describe "changing units" do
      before(:each) do
        @measurement = Barometer::Measurement.new
      end

      it "indicates if metric?" do
        @measurement.metric.should be_true
        @measurement.metric?.should be_true
        @measurement.metric = false
        @measurement.metric.should be_false
        @measurement.metric?.should be_false
      end

      it "changes to imperial" do
        @measurement.metric?.should be_true
        @measurement.imperial!
        @measurement.metric?.should be_false
      end

      it "changes to metric" do
        @measurement.metric = false
        @measurement.metric?.should be_false
        @measurement.metric!
        @measurement.metric?.should be_true
      end
    end
  end

  describe "when searching forecasts using 'for'" do
    before(:each) do
      @measurement = Barometer::Measurement.new

      # create a measurement object with a result array that includes
      # dates for 4 consecutive days starting with tommorrow
      @measurement.forecast = Barometer::Measurement::ResultArray.new
      1.upto(4) do |i|
        forecast_measurement = Barometer::Measurement::Result.new
        forecast_measurement.date = Date.parse((Time.now + (i * 60 * 60 * 24)).to_s)
        @measurement.forecast << forecast_measurement
      end
      @measurement.forecast.size.should == 4

      @tommorrow = (Time.now + (60 * 60 * 24))
    end

    it "returns nil when there are no forecasts" do
      @measurement.forecast = Barometer::Measurement::ResultArray.new
      @measurement.forecast.size.should == 0
      @measurement.for.should be_nil
    end

    it "finds the date using a String" do
      tommorrow = @tommorrow.to_s
      tommorrow.class.should == String
      @measurement.for(tommorrow).should == @measurement.forecast.first
    end

    it "finds the date using a Date" do
      tommorrow = Date.parse(@tommorrow.to_s)
      tommorrow.class.should == Date
      @measurement.for(tommorrow).should == @measurement.forecast.first
    end

    it "finds the date using a DateTime" do
      tommorrow = DateTime.parse(@tommorrow.to_s)
      tommorrow.class.should == DateTime
      @measurement.for(tommorrow).should == @measurement.forecast.first
    end

    it "finds the date using a Time" do
      @tommorrow.class.should == Time
      @measurement.for(@tommorrow).should == @measurement.forecast.first
    end

    it "fidns the date using Data::LocalDateTime" do
      tommorrow = Data::LocalDateTime.parse(@tommorrow.to_s)
      tommorrow.class.should == Data::LocalDateTime
      @measurement.for(tommorrow).should == @measurement.forecast.first
    end

    it "finds nothing when there is not a match" do
      yesterday = (Time.now - (60 * 60 * 24))
      yesterday.class.should == Time
      @measurement.for(yesterday).should be_nil
    end
  end

  describe "when answering the simple questions," do
    before(:each) do
      @measurement = Barometer::Measurement.new(:wunderground)
      @measurement.current = Barometer::Measurement::Result.new
      @now = Data::LocalDateTime.parse("2009-05-01 2:05 pm")
    end

    describe "windy?" do
      it "returns true if a current_measurement returns true" do
        @measurement.current.stub(:windy? => true)
        @measurement.windy?.should be_true
      end

      it "returns false if a current_measurement returns false" do
        @measurement.current.stub(:windy? => false)
        @measurement.windy?.should be_false
      end
    end

     describe "wet?" do
       it "returns true if the current_measurement returns true" do
         @measurement.current.stub(:wet? => true)
         @measurement.wet?.should be_true
       end

       it "returns false if the current_measurement returns false" do
         @measurement.current.stub(:wet? => false)
         @measurement.wet?.should be_false
       end
     end

    describe "day?" do
      it "returns true if the current_measurement returns true" do
        @measurement.current.stub(:day? => true)
        @measurement.day?.should be_true
      end

      it "returns false if the current_measurement returns false" do
        @measurement.current.stub(:day? => false)
        @measurement.day?.should be_false
      end
    end

    describe "sunny?" do
      it "returns true if the current_measurement returns true and day" do
        @measurement.current.stub(:day? => true)
        @measurement.current.stub(:sunny? => true)
        @measurement.day?.should be_true
        @measurement.sunny?.should be_true
      end

      it "returns false if the current_measurement returns false and day" do
        @measurement.current.stub(:day? => true)
        @measurement.current.stub(:sunny? => false)
        @measurement.day?.should be_true
        @measurement.sunny?.should be_false
      end

      it "returns false if night time" do
        @measurement.current.stub(:day? => false)
        @measurement.current.stub(:sunny? => true)
        @measurement.day?.should be_false
        @measurement.sunny?.should be_false
      end
    end
  end
end