/**
 * Describes the test suite.
 */
describe('Babylon Material', function () {
    let subject: BABYLON.Engine;

    /**
     * Loads the dependencies.
     */
    before(function (done) {
        this.timeout(180000);
        (BABYLONDEVTOOLS).Loader
            .useDist()
            .load(function () {
                // Force apply promise polyfill for consistent behavior between PhantomJS, IE11, and other browsers.
                BABYLON.PromisePolyfill.Apply(true);
                done();
            });
    });

    /**
     * Create a new engine subject before each test.
     */
    beforeEach(function () {
        subject = new BABYLON.NullEngine({
            renderHeight: 256,
            renderWidth: 256,
            textureSize: 256,
            deterministicLockstep: false,
            lockstepMaxSteps: 1
        });
    });

    describe('#PBRMaterial', () => {
        it('forceCompilation of a single material', () => {
            const scene = new BABYLON.Scene(subject);
            const mesh = BABYLON.Mesh.CreateBox("mesh", 1, scene);
            const material = new BABYLON.PBRMaterial("material", scene);
            return material.forceCompilationAsync(mesh);
        });
        it('forceCompilation of already compiled material', () => {
            const scene = new BABYLON.Scene(subject);
            const mesh = BABYLON.Mesh.CreateBox("mesh", 1, scene);
            const material = new BABYLON.PBRMaterial("material", scene);
            material.albedoTexture = new BABYLON.Texture("/Playground/scenes/BoomBox/BoomBox_baseColor.png", scene);
            return material.forceCompilationAsync(mesh).then(() => {
                return material.forceCompilationAsync(mesh);
            });
        });
        it('forceCompilation of same material in parallel', () => {
            const scene = new BABYLON.Scene(subject);
            const mesh = BABYLON.Mesh.CreateBox("mesh", 1, scene);
            const material = new BABYLON.PBRMaterial("material", scene);
            material.albedoTexture = new BABYLON.Texture("/Playground/scenes/BoomBox/BoomBox_baseColor.png", scene);
            return Promise.all([
                material.forceCompilationAsync(mesh),
                material.forceCompilationAsync(mesh)
            ]);
        });
    });
});