"use strict";

const normalizeOptions = require("../lib/normalize-options.js");
const assert = require("assert");

const {
  checkDuplicateIncludeExcludes,
  validateIncludesAndExcludes,
  validateLooseOption,
  validateModulesOption,
  normalizePluginNames
} = normalizeOptions;

describe("normalize-options", () => {
  describe("normalizeOptions", () => {
    it("should return normalized `include` and `exclude`", () => {
      const normalized = normalizeOptions.default({
        include: [
          "babel-plugin-transform-es2015-spread",
          "transform-es2015-classes"
        ]
      });
      assert.deepEqual(normalized.include, [
        "transform-es2015-spread",
        "transform-es2015-classes"
      ]);
    });

    it("should throw if duplicate names in `include` and `exclude`", () => {
      const normalizeWithSameIncludes = () => {
        normalizeOptions.default({
          include: [
            "babel-plugin-transform-es2015-spread",
          ],
          exclude: [
            "transform-es2015-spread"
          ]
        });
      };
      assert.throws(normalizeWithSameIncludes, Error);
    });
  });
  describe("validateLooseOption", () => {
    it("`undefined` option returns false", () => {
      assert(validateLooseOption() === false);
    });

    it("`false` option returns false", () => {
      assert(validateLooseOption(false) === false);
    });

    it("`true` option returns true", () => {
      assert(validateLooseOption(true) === true);
    });

    it("array option is invalid", () => {
      assert.throws(() => {
        validateLooseOption([]);
      }, Error);
    });
  });

  describe("checkDuplicateIncludeExcludes", function() {
    it("should throw if duplicate names in both", function() {
      assert.throws(() => {
        checkDuplicateIncludeExcludes(
          ["transform-regenerator", "map"],
          ["transform-regenerator", "map"]
        );
      }, Error);
    });

    it("should not throw if no duplicate names in both", function() {
      assert.doesNotThrow(() => {
        checkDuplicateIncludeExcludes(
          ["transform-regenerator"],
          ["map"]
        );
      }, Error);
    });
  });

  describe("normalizePluginNames", function() {
    it("should drop `babel-plugin-` prefix if needed", function() {
      assert.deepEqual(
        normalizePluginNames([
          "babel-plugin-transform-es2015-object-super",
          "transform-es2015-parameters"
        ]),
        ["transform-es2015-object-super", "transform-es2015-parameters"]
      );
    });

    it("should not throw if no duplicate names in both", function() {
      assert.doesNotThrow(() => {
        checkDuplicateIncludeExcludes(
          ["transform-regenerator"],
          ["map"]
        );
      }, Error);
    });
  });

  describe("validateModulesOption", () => {
    it("`undefined` option returns commonjs", () => {
      assert(validateModulesOption() === "commonjs");
    });

    it("`false` option returns commonjs", () => {
      assert(validateModulesOption(false) === false);
    });

    it("commonjs option is valid", () => {
      assert(validateModulesOption("commonjs") === "commonjs");
    });

    it("systemjs option is valid", () => {
      assert(validateModulesOption("systemjs") === "systemjs");
    });

    it("amd option is valid", () => {
      assert(validateModulesOption("amd") === "amd");
    });

    it("umd option is valid", () => {
      assert(validateModulesOption("umd") === "umd");
    });

    it("`true` option is invalid", () => {
      assert.throws(() => {
        validateModulesOption(true);
      }, Error);
    });

    it("array option is invalid", () => {
      assert.throws(() => {
        assert(validateModulesOption([]));
      }, Error);
    });
  });
  describe("validateIncludesAndExcludes", function() {
    it("should return empty arrays if undefined", function() {
      assert.deepEqual(validateIncludesAndExcludes(), []);
    });
    it("should throw if not in features", function() {
      assert.throws(() => {
        validateIncludesAndExcludes(["asdf"]);
      }, Error);
    });
  });
});