import { distributions, generateFloat, generateFloatRange } from "./generators";
import { test, expectEqual } from "./lib";

let checkDistributionSame = (distribution: string, operation: (arg: string) => string): void => {
  expectEqual(operation(distribution), operation(`toPointSet(${distribution})`));
  expectEqual(operation(distribution), operation(`toSampleSet(${distribution})`));
}

Object.entries(distributions).map(([key, generator]) => {
  let distribution = generator();
  test(`mean is the same for ${key} distribution under all distribution types`, () =>
    checkDistributionSame(distribution, (d: string) => `mean(${d})`)
      )

  test(`cdf is the same for ${key} distribution under all distribution types`, () => {
    let cdf_value = generateFloat();
    checkDistributionSame(distribution, (d: string) => `cdf(${d}, ${cdf_value})`)
  })

  test(`pdf is the same for ${key} distribution under all distribution types`, () => {
    let pdf_value = generateFloat();
    checkDistributionSame(distribution, (d: string) => `pdf(${d}, ${pdf_value})`)
  })

  test(`inv is the same for ${key} distribution under all distribution types`, () => {
    let inv_value = generateFloatRange(0, 1);
    checkDistributionSame(distribution, (d: string) => `inv(${d}, ${inv_value})`)
  })
});