import { describe, expect, test } from "vitest";

import { java } from "../testHelpers";

describe("invalidLaunch", () => {

test("failedLaunch", () => {

expect(java.isJvmCreated()).toBeFalsy();

java.asyncOptions = {

syncSuffix: "Sync",

asyncSuffix: "",

};

// First show that if asyncOptions.promisify is undefined, using the promise variant of ensureJvm throws an error.

expect(() => {

java.ensureJvm();

}).toThrow(/requires its one argument to be a callback function/);

expect(java.isJvmCreated()).toBeFalsy();

});

test("callbackNotAFunction", () => {

expect(java.isJvmCreated()).toBeFalsy();

java.asyncOptions = {

syncSuffix: "",

promiseSuffix: "P",

promisify: require("when/node").lift, // https://github.com/cujojs/when

};

expect(() => {

java.ensureJvm("foo");

}).toThrow(/requires its one argument to be a callback function/);

expect(java.isJvmCreated()).toBeFalsy();

});

test("jvmCanStillBeLaunched", async () => {

// None of the previous tests should have caused the JVM to be created, so it should still be possible to create one.

expect(java.isJvmCreated()).toBeFalsy();

java.asyncOptions = {

syncSuffix: "",

promiseSuffix: "P",

promisify: require("when/node").lift, // https://github.com/cujojs/when

};

await new Promise((resolve) => {

java.ensureJvm().done(function () {

expect(java.isJvmCreated()).toBeTruthy();

resolve();

});

});

});

});