import { ExposedInstanceDependencies } from '../../common';
import { Metadata } from '../get-bundle-info';
import { getMFEHasCompatibleLaunchDarklyVersion } from '../get-mfe-has-compatible-launchdarkly-version';

describe(`[web-components] ${getMFEHasCompatibleLaunchDarklyVersion.name}`, () => {
    const version = '1.0.0';
    let metadata: Pick<Metadata, 'bundledWith'>;
    let exposedInstanceDependencies: ExposedInstanceDependencies;

    beforeEach(() => {
        metadata = {
            bundledWith: { 'launchdarkly-js-client-sdk': version },
        };
    });

    function itReturns(value: boolean | undefined) {
        test(`return ${value}`, () => {
            expect(subject()).toBe(value);
        });
    }

    const subject = () =>
        getMFEHasCompatibleLaunchDarklyVersion(metadata.bundledWith, exposedInstanceDependencies);

    describe('when host and MFE use same LaunchDarkly version', () => {
        beforeEach(() => (exposedInstanceDependencies = { launchDarkly: { version } }));

        itReturns(true);
    });

    describe('when host uses different LaunchDarkly version', () => {
        beforeEach(() => (exposedInstanceDependencies = { launchDarkly: { version: '1.0.1' } }));

        itReturns(false);
    });

    describe('when host does not use LaunchDarkly', () => {
        beforeEach(() => (exposedInstanceDependencies = {}));

        itReturns(undefined);
    });

    describe('when MFE does not use LaunchDarkly', () => {
        beforeEach(() => (metadata.bundledWith = {}));

        itReturns(undefined);
    });

    describe('when metadata omits "bundledWith"', () => {
        beforeEach(() => delete metadata.bundledWith);

        itReturns(undefined);
    });
});