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implementation-option.test.js
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implementation-option.test.js
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import nodeSass from "node-sass";
import dartSass from "sass";
import { isSupportedFibers } from "../src/utils";
import {
compile,
getCodeFromBundle,
getCompiler,
getErrors,
getImplementationByName,
getTestId,
getWarnings,
} from "./helpers";
jest.setTimeout(30000);
let Fiber;
const implementations = [nodeSass, dartSass];
describe("implementation option", () => {
beforeAll(async () => {
if (isSupportedFibers()) {
const { default: fibers } = await import("fibers");
Fiber = fibers;
}
});
beforeEach(() => {
if (isSupportedFibers()) {
// The `sass` (`Dart Sass`) package modify the `Function` prototype, but the `jest` lose a prototype
Object.setPrototypeOf(Fiber, Function.prototype);
}
});
implementations.forEach((implementation) => {
const [implementationName] = implementation.info.split("\t");
it(`${implementationName}`, async () => {
const nodeSassSpy = jest.spyOn(nodeSass, "render");
const dartSassSpy = jest.spyOn(dartSass, "render");
const testId = getTestId("language", "scss");
const options = {
implementation: getImplementationByName(implementationName),
};
const compiler = getCompiler(testId, { loader: { options } });
const stats = await compile(compiler);
const { css, sourceMap } = getCodeFromBundle(stats, compiler);
expect(css).toBeDefined();
expect(sourceMap).toBeUndefined();
expect(getWarnings(stats)).toMatchSnapshot("warnings");
expect(getErrors(stats)).toMatchSnapshot("errors");
if (implementationName === "node-sass") {
expect(nodeSassSpy).toHaveBeenCalledTimes(1);
expect(dartSassSpy).toHaveBeenCalledTimes(0);
} else if (implementationName === "dart-sass") {
expect(nodeSassSpy).toHaveBeenCalledTimes(0);
expect(dartSassSpy).toHaveBeenCalledTimes(1);
}
nodeSassSpy.mockRestore();
dartSassSpy.mockRestore();
});
});
it("not specify", async () => {
const nodeSassSpy = jest.spyOn(nodeSass, "render");
const dartSassSpy = jest.spyOn(dartSass, "render");
const testId = getTestId("language", "scss");
const options = {};
const compiler = getCompiler(testId, { loader: { options } });
const stats = await compile(compiler);
const { css, sourceMap } = getCodeFromBundle(stats, compiler);
expect(css).toBeDefined();
expect(sourceMap).toBeUndefined();
expect(getWarnings(stats)).toMatchSnapshot("warnings");
expect(getErrors(stats)).toMatchSnapshot("errors");
expect(nodeSassSpy).toHaveBeenCalledTimes(0);
expect(dartSassSpy).toHaveBeenCalledTimes(1);
nodeSassSpy.mockRestore();
dartSassSpy.mockRestore();
});
it("should throw an error on an unknown sass implementation", async () => {
const testId = getTestId("language", "scss");
const options = {
implementation: Object.assign({}, dartSass, {
info: "strange-sass\t1.0.0",
}),
};
const compiler = getCompiler(testId, { loader: { options } });
const stats = await compile(compiler);
expect(getWarnings(stats)).toMatchSnapshot("warnings");
expect(getErrors(stats)).toMatchSnapshot("errors");
});
it('should throw an error when the "info" is unparseable', async () => {
const testId = getTestId("language", "scss");
const options = {
implementation: Object.assign({}, dartSass, { info: "asdfj" }),
};
const compiler = getCompiler(testId, { loader: { options } });
const stats = await compile(compiler);
expect(getWarnings(stats)).toMatchSnapshot("warnings");
expect(getErrors(stats)).toMatchSnapshot("errors");
});
it('should throw error when the "info" does not exist', async () => {
const testId = getTestId("language", "scss");
const options = {
// eslint-disable-next-line no-undefined
implementation: Object.assign({}, dartSass, { info: undefined }),
};
const compiler = getCompiler(testId, { loader: { options } });
const stats = await compile(compiler);
expect(getWarnings(stats)).toMatchSnapshot("warnings");
expect(getErrors(stats)).toMatchSnapshot("errors");
});
it("should not swallow an error when trying to load a sass implementation", async () => {
jest.doMock("node-sass", () => {
const error = new Error("Some error");
error.code = "MODULE_NOT_FOUND";
error.stack = null;
throw error;
});
jest.doMock("sass", () => {
const error = new Error("Some error");
error.code = "MODULE_NOT_FOUND";
error.stack = null;
throw error;
});
const testId = getTestId("language", "scss");
const options = {};
const compiler = getCompiler(testId, { loader: { options } });
const stats = await compile(compiler);
expect(getWarnings(stats)).toMatchSnapshot("warnings");
expect(getErrors(stats)).toMatchSnapshot("errors");
});
});