TypeScript/tests/cases/compiler/promiseType.ts

// @target: es6
declare var p: Promise<boolean>;

const a = p.then();
const b = p.then(b => 1);
const c = p.then(b => 1, e => 'error');
const d = p.then(b => 1, e => { });
const e = p.then(b => 1, e => { throw Error(); });
const f = p.then(b => 1, e => Promise.reject(Error()));
const g = p.catch(e => 'error');
const h = p.catch(e => { });
const i = p.catch(e => { throw Error(); });
const j = p.catch(e => Promise.reject(Error()));

async function A() {
    const a = await p;
    return a;
}

async function B() {
    const a = await p;
    return 1;
}

// NOTE: This reports a "No best comment type exists among return expressions." error, and is
//       ignored to get the types result for the test.
// async function C() {
//     try {
//         const a = await p;
//         return 1;
//     }
//     catch (e) {
//         return 'error';
//     }
// }

async function D() {
    try {
        const a = await p;
        return 1;
    }
    catch (e) {
    }
}

async function E() {
    try {
        const a = await p;
        return 1;
    }
    catch (e) {
        throw Error();
    }
}

async function F() {
    try {
        const a = await p;
        return 1;
    }
    catch (e) {
        return Promise.reject(Error());
    }
}

async function G() {
    try {
        const a = await p;
        return a;
    }
    catch (e) {
        return;
    }
}

async function H() {
    try {
        const a = await p;
        return a;
    }
    catch (e) {
        throw Error();
    }
}

async function I() {
    try {
        const a = await p;
        return a;
    }
    catch (e) {
        return Promise.reject(Error());
    }
}

// addresses github issue #4903:

const p00 = p.catch();
const p01 = p.catch(undefined);
const p07 = p.catch(null);
const p02 = p.catch(() => 1);
const p03 = p.catch(() => {});
const p04 = p.catch(() => {throw 1});
const p05 = p.catch(() => Promise.reject(1));
const p06 = p.catch(() => Promise.resolve(1));

const p10 = p.then();

const p20 = p.then(undefined);
const p21 = p.then(() => 1);
const p22 = p.then(() => {});
const p23 = p.then(() => {throw 1});
const p24 = p.then(() => Promise.resolve(1));
const p25 = p.then(() => Promise.reject(1));

const p30 = p.then(undefined, undefined);
const p31 = p.then(undefined, () => 1);
const p32 = p.then(undefined, () => {});
const p33 = p.then(undefined, () => {throw 1});
const p34 = p.then(undefined, () => Promise.resolve(1));
const p35 = p.then(undefined, () => Promise.reject(1));

const p40 = p.then(() => "1", undefined);
const p41 = p.then(() => "1", () => 1);
const p42 = p.then(() => "1", () => {});
const p43 = p.then(() => "1", () => {throw 1});
const p44 = p.then(() => "1", () => Promise.resolve(1));
const p45 = p.then(() => "1", () => Promise.reject(1));

const p50 = p.then(() => {}, undefined);
const p51 = p.then(() => {}, () => 1);
const p52 = p.then(() => {}, () => {});
const p53 = p.then(() => {}, () => {throw 1});
const p54 = p.then(() => {}, () => Promise.resolve(1));
const p55 = p.then(() => {}, () => Promise.reject(1));

const p60 = p.then(() => {throw 1}, undefined);
const p61 = p.then(() => {throw 1}, () => 1);
const p62 = p.then(() => {throw 1}, () => {});
const p63 = p.then(() => {throw 1}, () => {throw 1});
const p64 = p.then(() => {throw 1}, () => Promise.resolve(1));
const p65 = p.then(() => {throw 1}, () => Promise.reject(1));

const p70 = p.then(() => Promise.resolve("1"), undefined);
const p71 = p.then(() => Promise.resolve("1"), () => 1);
const p72 = p.then(() => Promise.resolve("1"), () => {});
const p73 = p.then(() => Promise.resolve("1"), () => {throw 1});
const p74 = p.then(() => Promise.resolve("1"), () => Promise.resolve(1));
const p75 = p.then(() => Promise.resolve("1"), () => Promise.reject(1));

const p80 = p.then(() => Promise.reject(1), undefined);
const p81 = p.then(() => Promise.reject(1), () => 1);
const p82 = p.then(() => Promise.reject(1), () => {});
const p83 = p.then(() => Promise.reject(1), () => {throw 1});
const p84 = p.then(() => Promise.reject(1), () => Promise.resolve(1));
const p85 = p.then(() => Promise.reject(1), () => Promise.reject(1));