babel/packages/babel-preset-env/test/normalize-options.spec.js
2017-11-21 20:03:16 -05:00

140 lines
3.9 KiB
JavaScript

"use strict";
const normalizeOptions = require("../lib/normalize-options.js");
const assert = require("assert");
const {
checkDuplicateIncludeExcludes,
normalizePluginNames,
validateBoolOption,
validateIncludesAndExcludes,
validateModulesOption,
} = normalizeOptions;
describe("normalize-options", () => {
describe("normalizeOptions", () => {
it("should return normalized `include` and `exclude`", () => {
const normalized = normalizeOptions.default({
include: ["babel-plugin-transform-spread", "transform-classes"],
});
assert.deepEqual(normalized.include, [
"transform-spread",
"transform-classes",
]);
});
it("should throw if duplicate names in `include` and `exclude`", () => {
const normalizeWithSameIncludes = () => {
normalizeOptions.default({
include: ["babel-plugin-transform-spread"],
exclude: ["transform-spread"],
});
};
assert.throws(normalizeWithSameIncludes, Error);
});
});
describe("validateBoolOption", () => {
it("`undefined` option returns false", () => {
assert(validateBoolOption("test", undefined, false) === false);
});
it("`false` option returns false", () => {
assert(validateBoolOption("test", false, false) === false);
});
it("`true` option returns true", () => {
assert(validateBoolOption("test", true, false) === true);
});
it("array option is invalid", () => {
assert.throws(() => {
validateBoolOption("test", [], false);
});
});
});
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-object-super",
"transform-parameters",
]),
["transform-object-super", "transform-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);
});
});
});