How to use toBeNaN method in jest-extended

Best JavaScript code snippet using jest-extended

script.spec.js

Source:script.spec.js Github

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...7 it("должна возвращать 5 при аргументах (3,2)", () => {8 expect(sum(3,2)).toBe(5);9 });10 it("должна возвращать NaN при одном из аргументов null (или при двух)", () => {11 expect(sum(null,2)).toBeNaN();12 expect(sum(2,null)).toBeNaN();13 expect(sum(null,null)).toBeNaN();14 });15 it("должна возвращать NaN при одном из аргументов типа string (или при двух)", () => {16 expect(sum('test',2)).toBeNaN();17 expect(sum(2,'test')).toBeNaN();18 expect(sum('test','test')).toBeNaN();19 });20 it("должна возвращать NaN при одном из аргументов типа undefined (или при двух)", () => {21 expect(sum(undefined,2)).toBeNaN();22 expect(sum(2,undefined)).toBeNaN();23 expect(sum(undefined,undefined)).toBeNaN();24 });25});26describe("Функция dif()", () => {27 it("должна возвращать 1 при аргументах (3,2)", () => {28 expect(dif(3,2)).toBe(1);29 });30 it("должна возвращать -1 при аргументах (4,5)", () => {31 expect(dif(4,5)).toBe(-1);32 });33 it("должна возвращать NaN при одном из аргументов null (или при двух)", () => {34 expect(dif(null,2)).toBeNaN();35 expect(dif(2,null)).toBeNaN();36 expect(dif(null,null)).toBeNaN();37 });38 it("должна возвращать NaN при одном из аргументов типа string (или при двух)", () => {39 expect(dif('test',2)).toBeNaN();40 expect(dif(2,'test')).toBeNaN();41 expect(dif('test','test')).toBeNaN();42 });43 it("должна возвращать NaN при одном из аргументов типа undefined (или при двух)", () => {44 expect(dif(undefined,2)).toBeNaN();45 expect(dif(2,undefined)).toBeNaN();46 expect(dif(undefined,undefined)).toBeNaN();47 });48});49describe("Функция product()", () => {50 it("должна возвращать 6 при аргументах (3,2)", () => {51 expect(product(3,2)).toBe(6);52 });53 it("должна возвращать 2.4 при аргументах (1.2,2)", () => {54 expect(product(1.2,2)).toBe(2.4);55 });56 it("должна возвращать 0 при одном из аргументов = 0", () => {57 expect(product(0,2)).toBe(0);58 expect(product(2,0)).toBe(0);59 });60 it("должна возвращать само число при умножении на 1", () => {61 expect(product(1,2)).toBe(2);62 expect(product(2,1)).toBe(2);63 });64 it("должна возвращать NaN при одном из аргументов null (или при двух)", () => {65 expect(product(null,2)).toBeNaN();66 expect(product(2,null)).toBeNaN();67 expect(product(null,null)).toBeNaN();68 });69 it("должна возвращать NaN при одном из аргументов типа string (или при двух)", () => {70 expect(product('test',2)).toBeNaN();71 expect(product(2,'test')).toBeNaN();72 expect(product('test','test')).toBeNaN();73 });74 it("должна возвращать NaN при одном из аргументов типа undefined (или при двух)", () => {75 expect(product(undefined,2)).toBeNaN();76 expect(product(2,undefined)).toBeNaN();77 expect(product(undefined,undefined)).toBeNaN();78 });79});80describe("Функция division()", () => {81 it("должна возвращать 2 при аргументах (6,3)", () => {82 expect(division(6,3)).toBe(2);83 });84 it("должна возвращать 0.5 при аргументах (1,2)", () => {85 expect(division(1,2)).toBe(0.5);86 });87 it("должна возвращать 0 при первом аргументе = 0", () => {88 expect(division(0,2)).toBe(0);;89 });90 it("должна возвращать бесконечность при делении на 0", () => {91 expect(division(2,0)).toBe(Infinity);92 });93 it("должна возвращать само число при делении на 1", () => {94 expect(division(2,1)).toBe(2);95 });96 it("должна возвращать 1 при делении на само себя", () => {97 expect(division(2,2)).toBe(1);98 });99 it("должна возвращать NaN при одном из аргументов null (или при двух)", () => {100 expect(division(null,2)).toBeNaN();101 expect(division(2,null)).toBeNaN();102 expect(division(null,null)).toBeNaN();103 });104 it("должна возвращать NaN при одном из аргументов типа string (или при двух)", () => {105 expect(division('test',2)).toBeNaN();106 expect(division(2,'test')).toBeNaN();107 expect(division('test','test')).toBeNaN();108 });109 it("должна возвращать NaN при одном из аргументов типа undefined (или при двух)", () => {110 expect(division(undefined,2)).toBeNaN();111 expect(division(2,undefined)).toBeNaN();112 expect(division(undefined,undefined)).toBeNaN();113 });...

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index.spec.js

Source:index.spec.js Github

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...14 expect(calculatePercent(20.05, 10)).toBe(2.005); // fails on Stack Overflow function at https://stackoverflow.com/a/437291215 expect(calculatePercent(20.98, 10)).toBe(2.098); // fails on v1.15.1 function at https://bitbucket.org/sporkbytes/web-application/src/109852367421f129d58163edb3ab1962fd09f8ff/client/src/app/components/utilities/utilities.service.js?at=1.15.1&fileviewer=file-view-default#utilities.service.js-7316 });17 it('should return NaN when the amount is null', () => {18 expect(calculatePercent(null, 25)).toBeNaN();19 });20 it('should return NaN when the percent is null', () => {21 expect(calculatePercent(13.5, null)).toBeNaN();22 });23});24describe('getNumberOfDecimalPlaces', () => {25 it('should return the proper number of decimals for a number with decimals', () => {26 expect(getNumberOfDecimalPlaces(13.5)).toBe(1);27 expect(getNumberOfDecimalPlaces(13.55)).toBe(2);28 expect(getNumberOfDecimalPlaces(13.555)).toBe(3);29 });30 it('should return 0 if there are no decimals', () => {31 expect(getNumberOfDecimalPlaces(13)).toBe(0);32 expect(getNumberOfDecimalPlaces('13.')).toBe(0);33 expect(getNumberOfDecimalPlaces(NaN)).toBe(0);34 expect(getNumberOfDecimalPlaces(null)).toBe(0);35 });36});37describe('getPercent', () => {38 it('should return the numerator as a percent of the denominator and round to 2 digits by default', () => {39 expect(getPercent(3.375, 13.5)).toBe(25.0);40 expect(getPercent('3.375', '13.50')).toBe(25.0);41 });42 it('should return the numerator as a percent of the denominator and round to the number of specified digits', () => {43 expect(getPercent(3.38, 13.5, 3)).toBe(25.037);44 expect(getPercent('3.38', '13.50', 3)).toBe(25.037);45 });46 it('should return NaN when either the numerator or the denominator cannot be parsed to a number', () => {47 expect(getPercent(null, 13.5)).toBeNaN();48 expect(getPercent(3.375, null)).toBeNaN();49 expect(getPercent(null, null)).toBeNaN();50 expect(getPercent('string', 13.5)).toBeNaN();51 expect(getPercent(3.375, 'string')).toBeNaN();52 expect(getPercent('string', 'string')).toBeNaN();53 });54 it('should return NaN when the denominator is 0', () => {55 expect(getPercent(0, 0)).toBeNaN();56 expect(getPercent(100, 0)).toBeNaN();57 expect(getPercent(-100, 0)).toBeNaN();58 });59 it('should get the percent when the precision is null', () => {60 expect(getPercent(3.375, 13.5, null)).toBe(25.0);61 });62});63describe('getPercentGrowth', () => {64 it('should return the percent growth from the oldValue to the newValue and round to 2 digits by default', () => {65 expect(getPercentGrowth(5, 7.33)).toBe(46.6);66 });67 it('should return the percent growth from the oldValue to the newValue and round to the number of digits specified', () => {68 expect(getPercentGrowth(5, 6.283945, 3)).toBe(25.679);69 });70 it('should return NaN when the oldValue or the newValue cannot be parsed to a number', () => {71 expect(getPercentGrowth(null, 100)).toBeNaN();72 expect(getPercentGrowth(100, null)).toBeNaN();73 expect(getPercentGrowth(null, null)).toBeNaN();74 expect(getPercentGrowth('string', 13.5)).toBeNaN();75 expect(getPercentGrowth(3.375, 'string')).toBeNaN();76 expect(getPercentGrowth('string', 'string')).toBeNaN();77 });78 it('should return NaN when the oldValue is 0', () => {79 expect(getPercentGrowth(0, 100)).toBeNaN();80 });81});82describe('roundCurrency', () => {83 it('should round to 2 digits', () => {84 expect(roundCurrency(10.34628295567127)).toBe(10.35);85 expect(roundCurrency(290.335)).toBe(290.34);86 });87 it('should return NaN when the amount is null', () => {88 expect(roundCurrency(null)).toBeNaN();89 });90});91describe('roundNumberToDigits', () => {92 it('should round to the specified number of digits for a positive number', () => {93 expect(roundNumberToDigits(10.34628295567127, 6)).toBe(10.346283);94 });95 it('should round to the specified number of digits for a negative number', () => {96 expect(roundNumberToDigits(-10.34628295567127, 6)).toBe(-10.346283);97 });98 it('should including trailing zeroes', () => {99 expect(roundNumberToDigits(100, 2)).toBe(100.0);100 });101 it('should round up when the next extra digit is 5 or higher', () => {102 expect(roundNumberToDigits(10.515, 2)).toBe(10.52);103 });104 it('should round down when the next extra digit is 4 or lower', () => {105 expect(roundNumberToDigits(10.514, 2)).toBe(10.51);106 });107 it('should return NaN when the number is null', () => {108 expect(roundNumberToDigits(null, 2)).toBeNaN();109 });...

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upbit.trades.spec.ts

Source:upbit.trades.spec.ts Github

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...13 _.map(obj, value => {14 expect(value.market).toEqual(market);15 expect(value.trade_date_utc).not.toBeNull();16 expect(value.trade_time_utc).not.toBeNull();17 expect(value.timestamp).not.toBeNaN();18 expect(value.trade_price).not.toBeNaN();19 expect(value.trade_volume).not.toBeNaN();20 expect(value.prev_closing_price).not.toBeNaN();21 expect(value.change_price).not.toBeNaN();22 // expect(value.ask_bid).toEqual('BID' || 'ASK');23 expect(value.sequential_id).not.toBeNaN();24 });25 }));26 it('ticker', (async () => {27 const obj = await ticker({markets: 'KRW-BTC'});28 obj.forEach( value => {29 expect( (value.change === 'RISE') || (value.change === 'FALL')).toBeTruthy();30 expect(value.trade_timestamp).not.toBeNaN();31 expect(value.opening_price).not.toBeNaN();32 expect(value.high_price).not.toBeNaN();33 expect(value.low_price).not.toBeNaN();34 expect(value.trade_price).not.toBeNaN();35 expect(value.prev_closing_price).not.toBeNaN();36 expect(value.change_price).not.toBeNaN();37 expect(value.change_rate).not.toBeNaN();38 expect(value.signed_change_price).not.toBeNaN();39 expect(value.signed_change_rate).not.toBeNaN();40 expect(value.trade_volume).not.toBeNaN();41 expect(value.acc_trade_price).not.toBeNaN();42 expect(value.acc_trade_price_24h).not.toBeNaN();43 expect(value.acc_trade_volume).not.toBeNaN();44 expect(value.acc_trade_volume_24h).not.toBeNaN();45 expect(value.highest_52_week_price).not.toBeNaN();46 expect(value.lowest_52_week_price).not.toBeNaN();47 expect(value.timestamp).not.toBeNaN();48 // highest_52_week_date: '2018-05-06',49 // lowest_52_week_date: '2018-12-15',50 });51 }));52 it('order Book', (async () => {53 const krwbtc = 'KRW-BTC';54 const krweth = 'KRW-ETH';55 const krwxrp = 'KRW-XRP';56 const obj = await orderBook({markets: `${krwbtc},${krweth},${krwxrp}`});57 // console.log(obj);58 expect(obj.length).toEqual(3);59 obj.forEach( value => {60 expect(value.total_ask_size).not.toBeNaN();61 expect(value.total_bid_size).not.toBeNaN();62 value.orderbook_units.forEach( unit => {63 expect(unit.ask_price).not.toBeNaN();64 expect(unit.bid_price).not.toBeNaN();65 expect(unit.ask_size).not.toBeNaN();66 expect(unit.bid_size).not.toBeNaN();67 });68 });69 }));...

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1const { toBeNaN } = require('jest-extended');2expect.extend({ toBeNaN });3test('passes when value is NaN', () => {4 expect(NaN).toBeNaN();5});6test('fails when value is not NaN', () => {7 expect(1).not.toBeNaN();8});9const { toBeNegative } = require('jest-extended');10expect.extend({ toBeNegative });11test('passes when value is negative', () => {12 expect(-1).toBeNegative();13});14test('fails when value is not negative', () => {15 expect(1).not.toBeNegative();16});17const { toBeNumber } = require('jest-extended');18expect.extend({ toBeNumber });19test('passes when value is a number', () => {20 expect(1).toBeNumber();21});22test('fails when value is not a number', () => {23 expect('1').not.toBeNumber();24});25const { toBePositive } = require('jest-extended');26expect.extend({ toBePositive });27test('passes when value is positive', () => {28 expect(1).toBePositive();29});30test('fails when value is not positive', () => {31 expect(-1).not.toBePositive();32});33const { toBeWholeNumber } = require('jest-extended');34expect.extend({ toBeWholeNumber });35test('passes when value is a whole number', () => {36 expect(1).toBeWholeNumber();37});38test('fails when value is not a whole number', () => {39 expect(1.5).not.toBeWholeNumber();40});41const { toBeWithinRange } = require('jest-extended');42expect.extend({ toBeWithinRange });43test('passes when value is within range', () => {44 expect(1).toBeWithinRange(0, 2);45});46test('fails when value is not within range', () => {47 expect(1).not.toBeWithinRange(2, 3);48});49const { toBeZero } = require('jest-extended');50expect.extend({ toBeZero

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1const { toBeNaN } = require('jest-matcher-utils');2expect.extend({ toBeNaN });3describe('toBeNaN', () => {4 test('passes when given NaN', () => {5 expect(NaN).toBeNaN();6 });7 test('fails when given non-NaN', () => {8 expect(() => expect(0).toBeNaN()).toThrowErrorMatchingSnapshot();9 });10});11const { toBeNegative } = require('jest-matcher-utils');12expect.extend({ toBeNegative });13describe('toBeNegative', () => {14 test('passes when given a negative number', () => {15 expect(-1).toBeNegative();16 });17 test('fails when given a positive number', () => {18 expect(() => expect(1).toBeNegative()).toThrowErrorMatchingSnapshot();19 });20});21const { toBeNegativeInfinity } = require('jest-matcher-utils');22expect.extend({ toBeNegativeInfinity });23describe('toBeNegativeInfinity', () => {24 test('passes when given -Infinity', () => {25 expect(-Infinity).toBeNegativeInfinity();26 });27 test('fails when given a number', () => {28 expect(() => expect(1).toBeNegativeInfinity()).toThrowErrorMatchingSnapshot();29 });30});31const { toBeNonEmptyArray } = require('jest-matcher-utils');32expect.extend({ toBeNonEmptyArray });33describe('toBeNonEmptyArray', () => {34 test('passes when given a non-empty array', () => {35 expect([1]).toBeNonEmptyArray();36 });37 test('fails when given an empty array', () => {38 expect(() => expect([]).toBeNonEmptyArray()).toThrowErrorMatchingSnapshot();39 });40});41const { toBeNonEmptyObject } = require('jest-matcher-utils');42expect.extend({ toBeNonEmptyObject });43describe('toBeNonEmptyObject', () => {44 test('passes when given a non-empty object', () => {45 expect({ a: 1 }).toBeNonEmptyObject();46 });47 test('fails when given an

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1const { toBeNaN } = require('jest-matcher-utils');2expect.extend({ toBeNaN });3const { toBeNaN } = require('jest-matcher-utils');4expect.extend({ toBeNaN });5test('toBeNaN', () => {6 expect(0 / 0).toBeNaN();7 expect(NaN).toBeNaN();8 expect(new Number(NaN)).toBeNaN();9});10const { toBeNegative } = require('jest-matcher-utils');11expect.extend({ toBeNegative });12test('toBeNegative', () => {13 expect(-1).toBeNegative();14 expect(-Infinity).toBeNegative();15 expect(new Number(-1)).toBeNegative();16});17const { toBeNegativeInfinity } = require('jest-matcher-utils');18expect.extend({ toBeNegativeInfinity });19test('toBeNegativeInfinity', () => {20 expect(-Infinity).toBeNegativeInfinity();21});22const { toBeNil } = require('jest-matcher-utils');23expect.extend({ toBeNil });24test('toBeNil', () => {25 expect(null).toBeNil();26 expect(undefined).toBeNil();27});28const { toBeNumber } = require('jest-matcher-utils');29expect.extend({ toBeNumber });30test('toBeNumber', () => {31 expect(1).toBeNumber();32 expect(new Number(1)).toBeNumber();33});34const { toBeObject } = require('jest-matcher-utils');35expect.extend({ toBeObject });36test('toBeObject', () => {37 expect({}).toBeObject();38 expect([]).toBeObject();39 expect(new Number(1)).toBeObject();40 expect(new String('')).toBeObject();41});42const { toBePlainObject } = require('jest-matcher-utils');43expect.extend({ toBePlainObject });44test('toBePlainObject', () => {45 expect({}).toBe

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1const { toBeNaN } = require('jest-extended');2expect.extend({ toBeNaN });3test('is NaN', () => {4 expect(NaN).toBeNaN();5});6const { toBeNegative } = require('jest-extended');7expect.extend({ toBeNegative });8test('is negative', () => {9 expect(-1).toBeNegative();10});11const { toBeNonEmptyArray } = require('jest-extended');12expect.extend({ toBeNonEmptyArray });13test('is non empty array', () => {14 expect([1, 2, 3]).toBeNonEmptyArray();15});16const { toBeNonEmptyObject } = require('jest-extended');17expect.extend({ toBeNonEmptyObject });18test('is non empty object', () => {19 expect({ a: 1, b: 2 }).toBeNonEmptyObject();20});21const { toBeNumber } = require('jest-extended');22expect.extend({ toBeNumber });23test('is number', () => {24 expect(1).toBeNumber();25});26const { toBeObject } = require('jest-extended');27expect.extend({ toBeObject });28test('is object', () => {29 expect({ a: 1 }).toBeObject();30});31const { toBePlainObject } = require('jest-extended');32expect.extend({ toBePlainObject });33test('is plain object', () => {34 expect({}).toBePlainObject();35});36const { toBePositive } = require('jest-extended');37expect.extend({ toBePositive });38test('is positive', () => {39 expect(1).toBePositive();40});41const { toBePromise } = require('jest

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1const { toBeNaN } = require('jest-matcher-utils');2expect.extend({ toBeNaN });3test('checks for NaN', () => {4 expect(NaN).toBeNaN();5});6const { toBeNegative } = require('jest-matcher-utils');7expect.extend({ toBeNegative });8test('checks for negative', () => {9 expect(-1).toBeNegative();10});11const { toBeNil } = require('jest-matcher-utils');12expect.extend({ toBeNil });13test('checks for nil', () => {14 expect(null).toBeNil();15});16const { toBeNumber } = require('jest-matcher-utils');17expect.extend({ toBeNumber });18test('checks for number', () => {19 expect(1).toBeNumber();20});21const { toBeObject } = require('jest-matcher-utils');22expect.extend({ toBeObject });23test('checks for object', () => {24 expect({ a: 1 }).toBeObject();25});26const { toBePlainObject } = require('jest-matcher-utils');27expect.extend({ toBePlainObject });28test('checks for plain object', () => {29 expect({ a: 1 }).toBePlainObject();30});31const { toBePositive } = require('jest-matcher-utils');32expect.extend({ toBePositive });33test('checks for positive', () => {34 expect(1).toBePositive();35});36const { toBePromise } = require('jest-matcher-utils');37expect.extend({ toBePromise });38test('checks for promise', () => {39 expect(new Promise(() => {})).toBePromise();40});41const { toBeRegExp } = require('jest-matcher-utils');42expect.extend({ toBeRegExp });

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1const { toBeNaN } = require('jest-matcher');2expect.extend({toBeNaN});3describe('toBeNaN', () => {4 test('does not match NaN', () => {5 expect(1).not.toBeNaN();6 });7 test('matches NaN', () => {8 expect(NaN).toBeNaN();9 });10});11const { toBeNegative } = require('jest-matcher');12expect.extend({toBeNegative});13describe('toBeNegative', () => {14 test('does not match positive numbers', () => {15 expect(1).not.toBeNegative();16 });17 test('does not match zero', () => {18 expect(0).not.toBeNegative();19 });20 test('matches negative numbers', () => {21 expect(-1).toBeNegative();22 });23});24const { toBeNegativeInfinity } = require('jest-matcher');25expect.extend({toBeNegativeInfinity});26describe('toBeNegativeInfinity', () => {27 test('does not match positive numbers', () => {28 expect(1).not.toBeNegativeInfinity();29 });30 test('does not match zero', () => {31 expect(0).not.toBeNegativeInfinity();32 });33 test('does not match negative numbers', () => {34 expect(-1).not.toBeNegativeInfinity();35 });36 test('matches negative infinity', () => {37 expect(-Infinity).toBeNegativeInfinity();38 });39});40const { toBeNil } = require('jest-matcher');41expect.extend({toBeNil});42describe('toBeNil', () => {43 test('does not match undefined', () => {44 expect(undefined).not.toBeNil();45 });46 test('does not match null', () => {47 expect(null).not.toBeNil();48 });49 test('matches undefined and null', () => {50 expect(void 0).toBeNil();51 expect(null).toBeNil();52 });53});54const { toBeNumber } = require('jest-matcher');55expect.extend({toBeNumber});56describe('toBeNumber', () => {57 test('does not match strings', () => {

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1const { toBeNaN } = require('jest-extended');2expect.extend({ toBeNaN });3test('NaN is NaN', () => {4 expect(NaN).toBeNaN();5});6test('NaN is NaN', () => {7 expect(NaN).toBeNaN();8});9const { toBeNaN } = require('jest-extended');10expect.extend({ toBeNaN });11test('NaN is NaN', () => {12 expect(NaN).toBeNaN();13});14test('NaN is NaN', () => {15 expect(NaN).toBeNaN();16});17const { toBeNaN } = require('jest-extended');18expect.extend({ toBeNaN });19test('NaN is NaN', () => {

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1expect.extend({ toBeNaN });2test('expect NaN', () => {3 expect(NaN).toBeNaN();4});5expect.extend({ toBeNumber });6test('expect NaN', () => {7 expect(NaN).toBeNumber();8});9expect.extend({ toBeNaN });10test('expect NaN', () => {11 expect(NaN).toBeNaN();12});13expect.extend({ toBeNumber });14test('expect NaN', () => {15 expect(NaN).toBeNumber();16});17expect.extend({ toBeNaN });18test('expect NaN', () => {19 expect(NaN).toBeNaN();20});21expect.extend({ toBeNumber });22test('expect NaN', () => {23 expect(NaN).toBeNumber();24});25expect.extend({ toBeNaN });26test('expect NaN', () => {27 expect(NaN).toBeNaN();28});29expect.extend({ toBeNumber });30test('expect NaN', () => {31 expect(NaN).toBeNumber();32});33expect.extend({ toBeNaN });34test('expect NaN', () => {35 expect(NaN).toBeNaN();36});37expect.extend({ toBeNumber });38test('expect NaN', () => {39 expect(NaN).toBeNumber();40});41expect.extend({ toBeNaN });42test('expect NaN', () => {43 expect(NaN).toBeNaN();44});45expect.extend({ toBeNumber });46test('expect NaN', () => {47 expect(NaN).toBeNumber();48});49expect.extend({ toBeNaN });50test('expect NaN', () => {51 expect(NaN).toBeNaN();52});53expect.extend({ toBeNumber });54test('expect NaN', () => {55 expect(N

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1const { toBeNaN } = require('jest-matcher-utils');2expect.extend({ toBeNaN });3test('NaN', () => {4 expect(NaN).toBeNaN();5 expect(1).not.toBeNaN();6});7const { toBeNegative } = require('jest-matcher-utils');8expect.extend({ toBeNegative });9test('negative', () => {10 expect(-1).toBeNegative();11 expect(1).not.toBeNegative();12});13const { toBeNil } = require('jest-matcher-utils');14expect.extend({ toBeNil });15test('nil', () => {16 expect(null).toBeNil();17 expect(undefined).toBeNil();18 expect(1).not.toBeNil();19});20const { toBeNumber } = require('jest-matcher-utils');21expect.extend({ toBeNumber });22test('number', () => {23 expect(1).toBeNumber();24 expect('1').not.toBeNumber();25});26const { toBeObject } = require('jest-matcher-utils');27expect.extend({ toBeObject });28test('object', () => {29 expect({}).toBeObject();30 expect([]).not.toBeObject();31});32const { toBePlainObject } = require('jest-matcher-utils');33expect.extend({ toBePlainObject });34test('plain object', () => {35 expect({}).toBePlainObject();36 expect([]).not

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1test('is NaN', () => {2 expect(NaN).toBeNaN();3 expect(0 / 0).toBeNaN();4 expect('foo').not.toBeNaN();5});6test('is finite', () => {7 expect(Infinity).not.toBeFinite();8 expect(123).toBeFinite();9});10test('is integer', () => {11 expect(Infinity).not.toBeInteger();12 expect(123).toBeInteger();13 expect(123.456).not.toBeInteger();14});15test('is number', () => {16 expect(Infinity).toBeNumber();17 expect(123).toBeNumber();18 expect('foo').not.toBeNumber();19});20test('is odd', () => {21 expect(2).not.toBeOdd();22 expect(1).toBeOdd();23});24test('is positive', () => {25 expect(1).toBePositive();26 expect(0).not.toBePositive();27 expect(-1).not.toBePositive();28});29test('is negative', () => {30 expect(-1).toBeNegative();31 expect(0).not.toBeNegative();32 expect(1).not.toBeNegative();33});34test('is even', () => {35 expect(1).not.toBeEven();36 expect(2).toBeEven();37});38test('is within range', () => {39 expect(2).toBeWithinRange(1, 3);40 expect(4).not.toBeWithinRange(1, 3);41});42test('is whole number', () => {43 expect(1).toBeWholeNumber();44 expect(1.1).not.toBeWholeNumber();45});46test('is within', () => {47 expect(2).toBeWithin(1, 3);48 expect(4).not.toBeWithin(1, 3);49});

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You could also refer to video tutorials over LambdaTest YouTube channel to get step by step demonstration from industry experts.

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