[Test] Updated the test to the new API (DateGenerationMethod => DemandGenerationMethod and no longer the enum type in input parameter for the ForecastingMethod).
[Test] Updated the test to the new API (DateGenerationMethod => DemandGenerationMethod and no longer the enum type in input parameter for the ForecastingMethod).

airsim/tvlsim,airsim/tvlsim,airsim/tvlsim,airsim/tvlsim,airsim/tvlsim,airsim/tvlsim,airsim/tvlsim,airsim/tvlsim,airsim/tvlsim