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How to use throwsAsyncFails method in ava
Best JavaScript code snippet using ava
assert.js
Source:assert.js 
...85 if (expectBoolean) {86 t.notOk(retval);87 }88}89function throwsAsyncFails(t, fn, subset) {90 return add(() => {91 lastFailure = null;92 return fn().then(retval => {93 t.equal(retval, undefined);94 assertFailure(t, subset);95 });96 });97}98function notThrowsAsyncFails(t, fn, subset) {99 return add(() => {100 lastFailure = null;101 return fn().then(retval => {102 t.equal(retval, undefined);103 assertFailure(t, subset);104 });105 });106}107function fails(t, fn) {108 lastFailure = null;109 const retval = fn();110 if (lastFailure) {111 t.notOk(retval);112 } else {113 t.fail('Expected assertion to fail');114 }115}116function passes(t, fn, {expectBoolean = true} = {}) {117 lastPassed = false;118 lastFailure = null;119 const retval = fn();120 if (lastPassed) {121 if (expectBoolean) {122 t.ok(retval);123 } else {124 t.pass();125 }126 } else {127 t.error(lastFailure, 'Expected assertion to pass');128 }129}130function throwsAsyncPasses(t, fn) {131 return add(() => {132 lastPassed = false;133 lastFailure = null;134 return fn().then(() => {135 if (lastPassed) {136 t.pass();137 } else {138 t.error(lastFailure, 'Expected assertion to pass');139 }140 });141 });142}143const notThrowsAsyncPasses = throwsAsyncPasses;144test('.pass()', t => {145 passes(t, () => assertions.pass());146 passes(t, () => assertions.pass());147 t.end();148});149test('.fail()', t => {150 failsWith(t, () => assertions.fail(), {151 assertion: 'fail',152 message: 'Test failed via `t.fail()`',153 });154 failsWith(t, () => assertions.fail('my message'), {155 assertion: 'fail',156 message: 'my message',157 });158 failsWith(t, () => assertions.fail(), {159 assertion: 'fail',160 message: 'Test failed via `t.fail()`',161 });162 failsWith(t, () => assertions.fail(null), {163 assertion: 'fail',164 improperUsage: true,165 message: 'The assertion message must be a string',166 values: [{167 label: 'Called with:',168 formatted: /null/,169 }],170 });171 t.end();172});173test('.is()', t => {174 passes(t, () => assertions.is('foo', 'foo'));175 passes(t, () => assertions.is('foo', 'foo'));176 passes(t, () => assertions.is('', ''));177 passes(t, () => assertions.is(true, true));178 passes(t, () => assertions.is(false, false));179 passes(t, () => assertions.is(null, null));180 passes(t, () => assertions.is(undefined, undefined));181 passes(t, () => assertions.is(1, 1));182 passes(t, () => assertions.is(0, 0));183 passes(t, () => assertions.is(-0, -0));184 passes(t, () => assertions.is(Number.NaN, Number.NaN));185 passes(t, () => assertions.is(0 / 0, Number.NaN));186 passes(t, () => {187 const someRef = {foo: 'bar'};188 return assertions.is(someRef, someRef);189 });190 fails(t, () => assertions.is(0, -0));191 fails(t, () => assertions.is(0, false));192 fails(t, () => assertions.is('', false));193 fails(t, () => assertions.is('0', 0));194 fails(t, () => assertions.is('17', 17));195 fails(t, () => assertions.is([1, 2], '1,2'));196 fails(t, () =>197 // eslint-disable-next-line no-new-wrappers, unicorn/new-for-builtins198 assertions.is(new String('foo'), 'foo'),199 );200 fails(t, () => assertions.is(null, undefined));201 fails(t, () => assertions.is(null, false));202 fails(t, () => assertions.is(undefined, false));203 fails(t, () =>204 // eslint-disable-next-line no-new-wrappers, unicorn/new-for-builtins205 assertions.is(new String('foo'), new String('foo')),206 );207 fails(t, () => assertions.is(0, null));208 fails(t, () => assertions.is(0, Number.NaN));209 fails(t, () => assertions.is('foo', Number.NaN));210 failsWith(t, () => assertions.is({foo: 'bar'}, {foo: 'bar'}), {211 assertion: 'is',212 message: '',213 actual: {foo: 'bar'},214 expected: {foo: 'bar'},215 values: [{216 label: 'Values are deeply equal to each other, but they are not the same:',217 formatted: /foo/,218 }],219 });220 failsWith(t, () => assertions.is('foo', 'bar'), {221 assertion: 'is',222 message: '',223 raw: {actual: 'foo', expected: 'bar'},224 values: [225 {label: 'Difference:', formatted: /- 'foo'\n\+ 'bar'/},226 ],227 });228 failsWith(t, () => assertions.is('foo', 42), {229 actual: 'foo',230 assertion: 'is',231 expected: 42,232 message: '',233 values: [234 {label: 'Difference:', formatted: /- 'foo'\n\+ 42/},235 ],236 });237 failsWith(t, () => assertions.is('foo', 42, 'my message'), {238 assertion: 'is',239 message: 'my message',240 values: [241 {label: 'Difference:', formatted: /- 'foo'\n\+ 42/},242 ],243 });244 failsWith(t, () => assertions.is(0, -0, 'my message'), {245 assertion: 'is',246 message: 'my message',247 values: [248 {label: 'Difference:', formatted: /- 0\n\+ -0/},249 ],250 });251 failsWith(t, () => assertions.is(-0, 0, 'my message'), {252 assertion: 'is',253 message: 'my message',254 values: [255 {label: 'Difference:', formatted: /- -0\n\+ 0/},256 ],257 });258 failsWith(t, () => assertions.is(0, 0, null), {259 assertion: 'is',260 improperUsage: true,261 message: 'The assertion message must be a string',262 values: [{263 label: 'Called with:',264 formatted: /null/,265 }],266 });267 t.end();268});269test('.not()', t => {270 passes(t, () => assertions.not('foo', 'bar'));271 passes(t, () => assertions.not('foo', 'bar'));272 fails(t, () => assertions.not(Number.NaN, Number.NaN));273 fails(t, () => assertions.not(0 / 0, Number.NaN));274 failsWith(t, () => assertions.not('foo', 'foo'), {275 assertion: 'not',276 message: '',277 raw: {actual: 'foo', expected: 'foo'},278 values: [{label: 'Value is the same as:', formatted: /foo/}],279 });280 failsWith(t, () => assertions.not('foo', 'foo', 'my message'), {281 assertion: 'not',282 message: 'my message',283 values: [{label: 'Value is the same as:', formatted: /foo/}],284 });285 failsWith(t, () => assertions.not(0, 1, null), {286 assertion: 'not',287 improperUsage: true,288 message: 'The assertion message must be a string',289 values: [{290 label: 'Called with:',291 formatted: /null/,292 }],293 });294 t.end();295});296test('.deepEqual()', t => {297 // Tests starting here are to detect regressions in the underlying libraries298 // used to test deep object equality299 fails(t, () => assertions.deepEqual({a: false}, {a: 0}));300 passes(t, () => assertions.deepEqual({301 a: 'a',302 b: 'b',303 }, {304 b: 'b',305 a: 'a',306 }));307 passes(t, () => assertions.deepEqual({a: 'a', b: 'b'}, {b: 'b', a: 'a'}));308 passes(t, () => assertions.deepEqual({309 a: 'a',310 b: 'b',311 c: {312 d: 'd',313 },314 }, {315 c: {316 d: 'd',317 },318 b: 'b',319 a: 'a',320 }));321 fails(t, () => assertions.deepEqual([1, 2, 3], [1, 2, 3, 4]));322 passes(t, () => assertions.deepEqual([1, 2, 3], [1, 2, 3]));323 fails(t, () => {324 const fnA = a => a;325 const fnB = a => a;326 return assertions.deepEqual(fnA, fnB);327 });328 passes(t, () => {329 const x1 = {z: 4};330 const y1 = {x: x1};331 x1.y = y1;332 const x2 = {z: 4};333 const y2 = {x: x2};334 x2.y = y2;335 return assertions.deepEqual(x1, x2);336 });337 passes(t, () => {338 function Foo(a) {339 this.a = a;340 }341 const x = new Foo(1);342 const y = new Foo(1);343 return assertions.deepEqual(x, y);344 });345 fails(t, () => {346 function Foo(a) {347 this.a = a;348 }349 function Bar(a) {350 this.a = a;351 }352 const x = new Foo(1);353 const y = new Bar(1);354 return assertions.deepEqual(x, y);355 });356 fails(t, () => assertions.deepEqual({357 a: 'a',358 b: 'b',359 c: {360 d: false,361 },362 }, {363 c: {364 d: 0,365 },366 b: 'b',367 a: 'a',368 }));369 fails(t, () => assertions.deepEqual({}, []));370 fails(t, () => assertions.deepEqual({0: 'a', 1: 'b'}, ['a', 'b']));371 fails(t, () => assertions.deepEqual({a: 1}, {a: 1, b: undefined}));372 fails(t, () => assertions.deepEqual(new Date('1972-08-01'), null));373 fails(t, () => assertions.deepEqual(new Date('1972-08-01'), undefined));374 passes(t, () => assertions.deepEqual(new Date('1972-08-01'), new Date('1972-08-01')));375 passes(t, () => assertions.deepEqual({x: new Date('1972-08-01')}, {x: new Date('1972-08-01')}));376 fails(t, () => assertions.deepEqual(() => {}, () => {}));377 passes(t, () => assertions.deepEqual(undefined, undefined)378 && assertions.deepEqual({x: undefined}, {x: undefined})379 && assertions.deepEqual({x: [undefined]}, {x: [undefined]}));380 passes(t, () => assertions.deepEqual(null, null)381 && assertions.deepEqual({x: null}, {x: null})382 && assertions.deepEqual({x: [null]}, {x: [null]}));383 passes(t, () => assertions.deepEqual(0, 0)384 && assertions.deepEqual(1, 1)385 && assertions.deepEqual(3.14, 3.14));386 fails(t, () => assertions.deepEqual(0, 1));387 fails(t, () => assertions.deepEqual(1, -1));388 fails(t, () => assertions.deepEqual(3.14, 2.72));389 fails(t, () => assertions.deepEqual({0: 'a', 1: 'b'}, ['a', 'b']));390 passes(t, () => assertions.deepEqual(391 [392 {foo: {z: 100, y: 200, x: 300}},393 'bar',394 11,395 {baz: {d: 4, a: 1, b: 2, c: 3}},396 ],397 [398 {foo: {x: 300, y: 200, z: 100}},399 'bar',400 11,401 {baz: {c: 3, b: 2, a: 1, d: 4}},402 ],403 ));404 passes(t, () => assertions.deepEqual(405 {x: {a: 1, b: 2}, y: {c: 3, d: 4}},406 {y: {d: 4, c: 3}, x: {b: 2, a: 1}},407 ));408 // Regression test end here409 passes(t, () => assertions.deepEqual({a: 'a'}, {a: 'a'}));410 passes(t, () => assertions.deepEqual(['a', 'b'], ['a', 'b']));411 fails(t, () => assertions.deepEqual({a: 'a'}, {a: 'b'}));412 fails(t, () => assertions.deepEqual(['a', 'b'], ['a', 'a']));413 fails(t, () => assertions.deepEqual([['a', 'b'], 'c'], [['a', 'b'], 'd']));414 fails(t, () => {415 const circular = ['a', 'b'];416 circular.push(circular);417 return assertions.deepEqual([circular, 'c'], [circular, 'd']);418 });419 failsWith(t, () => assertions.deepEqual('foo', 'bar'), {420 assertion: 'deepEqual',421 message: '',422 raw: {actual: 'foo', expected: 'bar'},423 values: [{label: 'Difference:', formatted: /- 'foo'\n\+ 'bar'/}],424 });425 failsWith(t, () => assertions.deepEqual('foo', 42), {426 assertion: 'deepEqual',427 message: '',428 raw: {actual: 'foo', expected: 42},429 values: [{label: 'Difference:', formatted: /- 'foo'\n\+ 42/}],430 });431 failsWith(t, () => assertions.deepEqual('foo', 42, 'my message'), {432 assertion: 'deepEqual',433 message: 'my message',434 values: [{label: 'Difference:', formatted: /- 'foo'\n\+ 42/}],435 });436 failsWith(t, () => assertions.deepEqual({}, {}, null), {437 assertion: 'deepEqual',438 improperUsage: true,439 message: 'The assertion message must be a string',440 values: [{441 label: 'Called with:',442 formatted: /null/,443 }],444 });445 t.end();446});447test('.notDeepEqual()', t => {448 passes(t, () => assertions.notDeepEqual({a: 'a'}, {a: 'b'}));449 passes(t, () => assertions.notDeepEqual({a: 'a'}, {a: 'b'}));450 passes(t, () => assertions.notDeepEqual(['a', 'b'], ['c', 'd']));451 const actual = {a: 'a'};452 const expected = {a: 'a'};453 failsWith(t, () => assertions.notDeepEqual(actual, expected), {454 actual,455 assertion: 'notDeepEqual',456 expected,457 message: '',458 raw: {actual, expected},459 values: [{label: 'Value is deeply equal:', formatted: /.*{.*\n.*a: 'a'/}],460 });461 failsWith(t, () => assertions.notDeepEqual(['a', 'b'], ['a', 'b'], 'my message'), {462 assertion: 'notDeepEqual',463 message: 'my message',464 values: [{label: 'Value is deeply equal:', formatted: /.*\[.*\n.*'a',\n.*'b',/}],465 });466 failsWith(t, () => assertions.notDeepEqual({}, [], null), {467 assertion: 'notDeepEqual',468 improperUsage: true,469 message: 'The assertion message must be a string',470 values: [{471 label: 'Called with:',472 formatted: /null/,473 }],474 });475 t.end();476});477test('.like()', t => {478 fails(t, () => assertions.like({a: false}, {a: 0}));479 passes(t, () => assertions.like({480 a: 'a',481 b: 'b',482 }, {483 b: 'b',484 a: 'a',485 }));486 passes(t, () => assertions.like({a: 'a', b: 'b'}, {b: 'b', a: 'a'}));487 passes(t, () => assertions.like({488 a: 'a',489 b: 'b',490 c: {491 d: 'd',492 x: 'x',493 },494 x: 'x',495 }, {496 c: {497 d: 'd',498 },499 b: 'b',500 a: 'a',501 }));502 fails(t, () => assertions.like([1, 2, 3], [1, 2, 3, 4]));503 fails(t, () => assertions.like({504 a: [1, 2, 3],505 }, {506 a: [1, 2, 3, 4],507 }));508 passes(t, () => assertions.like({509 a: [1, 2, 3],510 x: 'x',511 }, {512 a: [1, 2, 3],513 }));514 passes(t, () => {515 const actual = {516 a: 'a',517 extra: 'irrelevant',518 };519 actual.circular = actual;520 const likePattern = {521 a: 'a',522 };523 return assertions.like(actual, likePattern);524 });525 fails(t, () => {526 const fnA = a => a;527 const fnB = a => a;528 return assertions.like(fnA, fnB);529 });530 fails(t, () => {531 const fnA = a => a;532 const fnB = a => a;533 return assertions.like({534 fn: fnA,535 }, {536 fn: fnB,537 });538 });539 fails(t, () => {540 function Foo(a) {541 this.a = a;542 }543 function Bar(a) {544 this.a = a;545 }546 const x = new Foo(1);547 const y = new Bar(1);548 return assertions.like(x, y);549 });550 passes(t, () => assertions.like({a: 'a'}, {a: 'a'}));551 passes(t, () => assertions.like({a: 'a', b: 'b'}, {a: 'a'}));552 passes(t, () => assertions.like({ab: ['a', 'b']}, {ab: ['a', 'b']}));553 passes(t, () => assertions.like({ab: ['a', 'b'], c: 'c'}, {ab: ['a', 'b']}));554 fails(t, () => assertions.like({a: 'a'}, {a: 'b'}));555 fails(t, () => assertions.like({a: 'a', b: 'b'}, {a: 'b'}));556 fails(t, () => assertions.like({ab: ['a', 'b']}, {ab: ['a', 'a']}));557 fails(t, () => assertions.like({ab: ['a', 'b'], c: 'c'}, {ab: ['a', 'a']}));558 fails(t, () => assertions.like([['a', 'b'], 'c'], [['a', 'b'], 'd']));559 fails(t, () => {560 const circular = ['a', 'b'];561 circular.push(circular);562 return assertions.like([circular, 'c'], [circular, 'd']);563 });564 fails(t, () => {565 const circular = ['a', 'b'];566 circular.push(circular);567 return assertions.like({xc: [circular, 'c']}, {xc: [circular, 'd']});568 });569 failsWith(t, () => assertions.like({a: 'a'}, {}), {570 assertion: 'like',571 message: '`t.like()` selector must be a non-empty object',572 values: [{label: 'Called with:', formatted: '{}'}],573 });574 failsWith(t, () => assertions.like('foo', 'bar'), {575 assertion: 'like',576 message: '`t.like()` selector must be a non-empty object',577 values: [{label: 'Called with:', formatted: '\'bar\''}],578 });579 failsWith(t, () => {580 const likePattern = {581 a: 'a',582 };583 likePattern.circular = likePattern;584 return assertions.like({}, likePattern);585 }, {586 assertion: 'like',587 message: '`t.like()` selector must not contain circular references',588 values: [{label: 'Called with:', formatted: '{\n a: \'a\',\n circular: [Circular],\n}'}],589 });590 failsWith(t, () => assertions.like({}, {}, null), {591 assertion: 'like',592 improperUsage: true,593 message: 'The assertion message must be a string',594 values: [{595 label: 'Called with:',596 formatted: /null/,597 }],598 });599 failsWith(t, () => assertions.like({a: 'foo', b: 'irrelevant'}, {a: 'bar'}), {600 assertion: 'like',601 message: '',602 values: [{label: 'Difference:', formatted: /{\n-\s*a: 'foo',\n\+\s*a: 'bar',\n\s*}/}],603 });604 t.end();605});606test('.throws()', gather(t => {607 // Fails because function doesn't throw.608 failsWith(t, () => assertions.throws(() => {}), {609 assertion: 'throws',610 message: '',611 values: [{label: 'Function returned:', formatted: /undefined/}],612 });613 failsWith(t, () => assertions.throws(() => {}), {614 assertion: 'throws',615 message: '',616 values: [{label: 'Function returned:', formatted: /undefined/}],617 });618 // Fails because function doesn't throw. Asserts that 'my message' is used619 // as the assertion message (*not* compared against the error).620 failsWith(t, () => assertions.throws(() => {}, undefined, 'my message'), {621 assertion: 'throws',622 message: 'my message',623 values: [{label: 'Function returned:', formatted: /undefined/}],624 });625 // Fails because the function returned a promise.626 failsWith(t, () => assertions.throws(() => Promise.resolve()), {627 assertion: 'throws',628 message: '',629 values: [{label: 'Function returned a promise. Use `t.throwsAsync()` instead:', formatted: /Promise/}],630 });631 // Fails because thrown exception is not an error632 failsWith(t, () => assertions.throws(() => {633 const error = 'foo';634 throw error;635 }), {636 assertion: 'throws',637 message: '',638 values: [639 {label: 'Function threw exception that is not an error:', formatted: /'foo'/},640 ],641 });642 // Passes because an error is thrown.643 passes(t, () => assertions.throws(() => {644 throw new Error('foo');645 }));646 // Passes because the correct error is thrown.647 passes(t, () => {648 const error = new Error('foo');649 return assertions.throws(() => {650 throw error;651 }, {is: error});652 });653 // Fails because the thrown value is not an error654 fails(t, () => {655 const object = {};656 return assertions.throws(() => {657 throw object;658 }, {is: object});659 });660 // Fails because the thrown value is not the right one661 fails(t, () => {662 const error = new Error('foo');663 return assertions.throws(() => {664 throw error;665 }, {is: {}});666 });667 // Passes because the correct error is thrown.668 passes(t, () => assertions.throws(() => {669 throw new TypeError();670 }, {name: 'TypeError'}));671 // Fails because the thrown value is not an error672 fails(t, () => assertions.throws(() => {673 const error = {name: 'Bob'};674 throw error;675 }, {name: 'Bob'}));676 // Fails because the thrown value is not the right one677 fails(t, () => assertions.throws(() => {678 throw new Error('foo');679 }, {name: 'TypeError'}));680 // Passes because the correct error is thrown.681 passes(t, () => assertions.throws(() => {682 const error = new TypeError();683 error.code = 'ERR_TEST';684 throw error;685 }, {code: 'ERR_TEST'}));686 // Passes because the correct error is thrown.687 passes(t, () => assertions.throws(() => {688 const error = new TypeError();689 error.code = 42;690 throw error;691 }, {code: 42}));692 // Fails because the thrown value is not the right one693 fails(t, () => assertions.throws(() => {694 const error = new TypeError();695 error.code = 'ERR_NOPE';696 throw error;697 }, {code: 'ERR_TEST'}));698 fails(t, () => assertions.throws(() => {699 const error = new TypeError();700 error.code = 1;701 throw error;702 }, {code: 42}));703 // Regression test for https://github.com/avajs/ava/issues/1676704 fails(t, () => assertions.throws(() => {705 throw new Error('foo');706 }, false));707 passes(t, () => assertions.throws(() => {708 throw new Error('foo');709 }, undefined));710 passes(t, async () => {711 await assertions.throwsAsync(() => Promise.reject(new Error('foo')), undefined);712 });713 failsWith(t, () => assertions.throws(() => {}, undefined, null), {714 assertion: 'throws',715 improperUsage: true,716 message: 'The assertion message must be a string',717 values: [{718 label: 'Called with:',719 formatted: /null/,720 }],721 });722 // Fails because the string in the message is incorrect723 failsWith(724 t,725 () =>726 assertions.throws(727 () => {728 throw new Error('error');729 },730 {message: 'my error'},731 ),732 {733 assertion: 'throws',734 message: '',735 values: [736 {label: 'Function threw unexpected exception:', formatted: /error/},737 {label: 'Expected message to equal:', formatted: /my error/},738 ],739 },740 );741 passes(t, () => assertions.throws(() => {742 throw new Error('error');743 }, {message: 'error'}));744 // Fails because the regular expression in the message is incorrect745 failsWith(746 t,747 () =>748 assertions.throws(749 () => {750 throw new Error('error');751 },752 {message: /my error/},753 ),754 {755 assertion: 'throws',756 message: '',757 values: [758 {label: 'Function threw unexpected exception:', formatted: /error/},759 {label: 'Expected message to match:', formatted: /my error/},760 ],761 },762 );763 passes(t, () => assertions.throws(() => {764 throw new Error('error');765 }, {message: /error/}));766 // Fails because the function in the message returns false767 failsWith(768 t,769 () =>770 assertions.throws(771 () => {772 throw new Error('error');773 },774 {message: () => false},775 ),776 {777 assertion: 'throws',778 message: '',779 values: [780 {label: 'Function threw unexpected exception:', formatted: /error/},781 {label: 'Expected message to return true:', formatted: /Function/},782 ],783 },784 );785 passes(t, () => assertions.throws(() => {786 throw new Error('error');787 }, {message: () => true}));788}));789test('.throws() returns the thrown error', t => {790 const expected = new Error();791 const actual = assertions.throws(() => {792 throw expected;793 });794 t.equal(actual, expected);795 t.end();796});797test('.throwsAsync()', gather(t => {798 // Fails because the promise is resolved, not rejected.799 throwsAsyncFails(t, () => assertions.throwsAsync(Promise.resolve('foo')), {800 assertion: 'throwsAsync',801 message: '',802 values: [{label: 'Promise resolved with:', formatted: /'foo'/}],803 });804 throwsAsyncFails(t, () => assertions.throwsAsync(Promise.resolve('foo')), {805 assertion: 'throwsAsync',806 message: '',807 values: [{label: 'Promise resolved with:', formatted: /'foo'/}],808 });809 // Fails because the promise is resolved with an Error810 throwsAsyncFails(t, () => assertions.throwsAsync(Promise.resolve(new Error())), {811 assertion: 'throwsAsync',812 message: '',813 values: [{label: 'Promise resolved with:', formatted: /Error/}],814 });815 // Fails because the function returned a promise that resolved, not rejected.816 throwsAsyncFails(t, () => assertions.throwsAsync(() => Promise.resolve('foo')), {817 assertion: 'throwsAsync',818 message: '',819 values: [{label: 'Returned promise resolved with:', formatted: /'foo'/}],820 });821 // Passes because the promise was rejected with an error.822 throwsAsyncPasses(t, () => assertions.throwsAsync(Promise.reject(new Error())));823 // Passes because the function returned a promise rejected with an error.824 throwsAsyncPasses(t, () => assertions.throwsAsync(() => Promise.reject(new Error())));825 // Fails because the function throws synchronously826 throwsAsyncFails(t, () => assertions.throwsAsync(() => {827 throw new Error('sync');828 }, undefined, 'message'), {829 assertion: 'throwsAsync',830 message: 'message',831 values: [832 {label: 'Function threw synchronously. Use `t.throws()` instead:', formatted: /Error/},833 ],834 });835 // Fails because the function did not return a promise836 throwsAsyncFails(t, () => assertions.throwsAsync(() => {}, undefined, 'message'), {837 assertion: 'throwsAsync',838 message: 'message',839 values: [840 {label: 'Function returned:', formatted: /undefined/},841 ],842 });843 throwsAsyncFails(t, () => assertions.throwsAsync(Promise.resolve(), undefined, null), {844 assertion: 'throwsAsync',845 improperUsage: true,846 message: 'The assertion message must be a string',847 values: [{848 label: 'Called with:',849 formatted: /null/,850 }],851 });852}));853test('.throwsAsync() returns the rejection reason of promise', t => {854 const expected = new Error();855 return assertions.throwsAsync(Promise.reject(expected)).then(actual => {856 t.equal(actual, expected);857 t.end();...
Using AI Code Generation
1const test = require('ava');2const throwsAsyncFails = require('throws-async-fails');3test('throwsAsyncFails', async t => {4 await throwsAsyncFails(5 async () => {6 throw new Error('Error message');7 },8 );9});10const test = require('ava');11const throwsAsyncPasses = require('throws-async-passes');12test('throwsAsyncPasses', async t => {13 await throwsAsyncPasses(14 async () => {15 throw new Error('Error message');16 },17 );18});19- [throws-async](
Using AI Code Generation
1test('throwsAsyncFails', async t => {2 await t.throwsAsync(Promise.reject(new Error('foo')), 'bar');3});4test('throwsAsyncPasses', async t => {5 await t.throwsAsync(Promise.reject(new Error('foo')), 'foo');6});7test('throwsAsyncThrows', async t => {8 await t.throwsAsync(Promise.resolve(), 'foo');9});10test('throwsAsyncThrows', async t => {11 await t.throwsAsync(Promise.reject(new Error('foo')), 'bar');12});13test('throwsAsyncThrows', async t => {14 await t.throwsAsync(Promise.resolve(), 'foo');15});16test('throwsAsyncThrows', async t => {17 await t.throwsAsync(Promise.reject(new Error('foo')), 'bar');18});19test('throwsAsyncThrows', async t => {20 await t.throwsAsync(Promise.resolve(), 'foo');21});22test('throwsAsyncThrows', async t => {23 await t.throwsAsync(Promise.reject(new Error('foo')), 'bar');24});25test('throwsAsyncThrows', async t => {26 await t.throwsAsync(Promise.resolve(), 'foo');27});28test('throwsAsyncThrows', async t => {29 await t.throwsAsync(Promise.reject(new Error('foo')), 'bar');30});31test('throwsAsyncThrows', async t => {32 await t.throwsAsync(Promise.resolve(), 'foo');33});34test('throwsAsyncThrows', async t => {35 await t.throwsAsync(Promise.reject(new
Using AI Code Generation
1import test from 'ava'2test('throwsAsyncFails', async t => {3 await t.throwsAsync(Promise.reject(new Error('foo')))4 await t.throwsAsync(Promise.reject(new Error('bar')))5})6import test from 'ava'7test('throwsAsync', async t => {8 await t.throwsAsync(Promise.reject(new Error('foo')))9 await t.throwsAsync(Promise.reject(new Error('foo')))10})
Using AI Code Generation
1import test from 'ava';2import {throwsAsyncFails} from 'ava-throws-async-fails';3test('throwsAsyncFails', throwsAsyncFails, async () => {4 await Promise.reject(new Error('foo'));5}, 'foo');6## throwsAsyncFails(testFn, expected, [message])
Using AI Code Generation
1const test = require('ava');2const throwsAsyncFails = require('ava-throws-async-fails');3const { throwsAsync } = require('ava-throws-async-fails');4const fn = () => Promise.reject(new Error('foo'));5test('throwsAsyncFails', throwsAsyncFails, fn, 'foo');6const test = require('ava');7const { throwsAsync } = require('ava-throws-async-fails');8const fn = () => Promise.reject(new Error('foo'));9test('throwsAsync', throwsAsync, fn, 'foo');10- [ava](
Using AI Code Generation
1import test from 'ava';2import fn from './';3test('throws async fails', async t => {4 await t.throwsAsync(fn(), 'foo');5});6### throwsAsync(fn, error, [message])7### throwsAsync(fn, [message])8- [throws-async](
Using AI Code Generation
1const test = require('ava');2const {throws} = require('assert');3const {promisify} = require('util');4const fs = require('fs');5const readFile = promisify(fs.readFile);6test('throwsAsyncFails', async t => {7 await throwsAsyncFails(async () => {8 await readFile('test.js', 'utf8');9 }, 'test.js');10});
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