fuse-box/src/tests/ExtensionOverrides.test.ts

Fuse-Box a bundler that does it right

import { should } from "fuse-test-runner";
import { FuseTestEnv, createRealNodeModule } from "./stubs/FuseTestEnv";
import { ExtensionOverrides } from "../core/ExtensionOverrides";

export class ExtensionOverridesTest {
  "Should create an instance and set overrides if they are valid"() {
    const extensionOverrides = new ExtensionOverrides(['.foo.ts', '.foo.css']);

    should(extensionOverrides.overrides).deepEqual(['.foo.ts', '.foo.css']);
  }

  "Should create an instance and not set overrides if they are invalid"() {
    const extensionOverrides = new ExtensionOverrides(['not-valid.ts', '.foo.css']);

    should(extensionOverrides.overrides).deepEqual(['.foo.css']);
  }

  "Should allow adding additional overrides"() {
    const extensionOverrides = new ExtensionOverrides(['.foo.ts']);

    should(extensionOverrides.overrides).deepEqual(['.foo.ts']);

    extensionOverrides.add('.foo.css');

    should(extensionOverrides.overrides).deepEqual(['.foo.ts', '.foo.css']);
  }

  "Should not update a File's path info if the file does not belong to the project"() {
    const name = "fuse_test_a";

    createRealNodeModule(name, {
        "package.json": JSON.stringify({
            name: name,
            main: "./index.js"
        }),
        "index.js": `module.exports = require("./target.js")`,
        "target.js": `module.exports = {message : "I should be included"}`
        "target.foo.js": `module.exports = {message : "I should not be included"}`
    });

    return FuseTestEnv.create({
        project: {
          extensionOverrides: ['.foo.ts'],
          files: {
              "index.ts": `module.exports = require("${name}")`
          }
        }
      }).simple().then((env) => env.browser((window) => {
        should(window.FuseBox.import("./index")).deepEqual({ message: 'I should be included' });
      }));
  }

  "Should update a File's path info if an override matches"() {
    return FuseTestEnv.create({
        project: {
          extensionOverrides: ['.foo.ts'],
          files: {
              "index.ts": `export {getMessage} from './hello'`,
              "hello.ts": `export function getMessage() { return 'I should not be included'; }`,
              "hello.foo.ts": `export function getMessage() { return 'I should be included'; }`
          }
        }
      }).simple().then((env) => env.browser((window) => {
        should(window.FuseBox.import("./index").getMessage()).equal('I should be included');
      }));
  }
}