Best JavaScript code snippet using jest
index.js
Source: index.js
...96 min: 4,97 max: 10,98 adTime: 60,99 thread: null,100 // isInstall: app.getPackageName("趣头æ¡") == null ? "#C0C0C0" : "#20B2AA",101 check_u_c: false,102 exception: false103 },104 {105 id: "douYinJiSu",106 type: "view",107 appName: "æé³æéç",108 complete: false,109 min: -1,110 max: -1,111 adTime: 0,112 thread: null,113 check_u_c: false,114 // isInstall: app.getPackageName("æé³æéç") == null ? "#C0C0C0" : "#20B2AA",115 exception: false116 },117 {118 id: "shuaBaoDuShiPin",119 type: "view",120 appName: "å·å®çè§é¢",121 complete: false,122 min: -1,123 max: -1,124 adTime: 0, thread: null,125 check_u_c: false,126 // isInstall: app.getPackageName("å·å®çè§é¢") == null ? "#C0C0C0" : "#20B2AA",127 exception: false128 },129 {130 id: "kuaiShouJiSu",131 type: "view",132 appName: "å¿«ææéç",133 complete: false,134 min: -1,135 max: -1,136 adTime: 0, thread: null,137 check_u_c: false,138 // isInstall: app.getPackageName("å¿«ææéç") == null ? "#C0C0C0" : "#20B2AA",139 exception: false140 },141 {142 id: "lingShengXiu",143 type: "view",144 appName: "é声ç§",145 complete: false,146 min: -1,147 max: -1,148 adTime: 0, thread: null,149 check_u_c: false,150 // isInstall: app.getPackageName("é声ç§") == null ? "#C0C0C0" : "#20B2AA",151 exception: false152 },153 {154 id: "dianDianXinWen",155 type: "view",156 appName: "ç¹ç¹æ°é»",157 complete: false,158 min: -1,159 max: -1,160 adTime: 0, thread: null,161 check_u_c: false,162 // isInstall: app.getPackageName("ç¹ç¹æ°é»") == null ? "#C0C0C0" : "#20B2AA",163 exception: false164 },165 {166 id: "dianShiJia",167 type: "view",168 appName: "çµè§å®¶",169 complete: false,170 min: -1,171 max: -1,172 adTime: 0, thread: null,173 check_u_c: false,174 // isInstall: app.getPackageName("çµè§å®¶") == null ? "#C0C0C0" : "#20B2AA",175 exception: false176 },177 {178 id: "yiTongShangCheng",179 type: "view",180 appName: "çéåå",181 complete: false,182 min: -1,183 max: -1,184 adTime: 0, thread: null,185 check_u_c: false,186 // isInstall: app.getPackageName("çéåå") == null ? "#C0C0C0" : "#20B2AA",187 exception: false188 },189 {190 id: "weiShi",191 type: "view",192 appName: "å¾®è§",193 complete: false,194 min: -1,195 max: -1,196 adTime: 0, thread: null,197 check_u_c: false,198 // isInstall: app.getPackageName("å¾®è§") == null ? "#C0C0C0" : "#20B2AA",199 exception: false200 },201 {202 id: "caiDanShiPin",203 type: "view",204 appName: "彩èè§é¢",205 complete: false,206 min: -1,207 max: -1,208 adTime: 0, thread: null,209 check_u_c: false,210 // isInstall: app.getPackageName("彩èè§é¢") == null ? "#C0C0C0" : "#20B2AA",211 exception: false212 },213 {214 id: "kuaiYin",215 type: "view",216 appName: "å¿«é³",217 complete: false,218 min: -1,219 max: -1,220 adTime: 0, thread: null,221 check_u_c: false,222 // isInstall: app.getPackageName("å¿«é³") == null ? "#C0C0C0" : "#20B2AA",223 exception: false224 },225 {226 id: "taoBaoZhiBo",227 type: "view",228 appName: "æ·å®ç´æ",229 complete: false,230 min: -1,231 max: -1,232 adTime: 0, thread: null,233 check_u_c: false,234 // isInstall: app.getPackageName("æ·å®ç´æ") == null ? "#C0C0C0" : "#20B2AA",235 exception: false236 },237 {238 id: "haoKanShiPin",239 type: "view",240 appName: "好çè§é¢",241 complete: false,242 min: -1,243 max: -1,244 adTime: 0, thread: null,245 check_u_c: false,246 // isInstall: app.getPackageName("好çè§é¢") == null ? "#C0C0C0" : "#20B2AA",247 exception: false248 },249 {250 id: "fanQieMianFeiXiaoShuo",251 type: "view",252 appName: "çªèå
è´¹å°è¯´",253 complete: false,254 min: -1,255 max: -1,256 adTime: 0, thread: null,257 check_u_c: false,258 // isInstall: app.getPackageName("å¾®è§çªèå
è´¹å°è¯´") == null ? "#C0C0C0" : "#20B2AA",259 exception: false260 },261 ]262 },263 mutations: {264 },265 actions: {266 },267 modules: {268 }...
utils_spec.js
Source: utils_spec.js
...10 });11 });12 describe('.getPackageName', () => {13 it('finds the name of a package from its manifest', () => {14 expect(packageUtils.getPackageName(null)).toBeNull();15 expect(packageUtils.getPackageName()).toBeNull();16 expect(packageUtils.getPackageName({})).toBeNull();17 expect(packageUtils.getPackageName({18 name: 'PACKAGENAME'19 })).toBe('packagename');20 expect(packageUtils.getPackageName({21 namespace: 'package-namespace',22 name: 'PACKAGENAME'23 })).toBe('package-namespace');24 });25 });26 describe('.getPackageDependencies', () => {27 it('returns an object containing the package\'s LabShare package dependencies', () => {28 let manifest = {29 "name": "name",30 "dependencies": {31 "lodash": "*"32 },33 "packageDependencies": [34 'foo'...
ClassTest1.js
Source: ClassTest1.js
...18 var strIndex = str.indexOf("_", 0);19 }20})21.protos({22 //> public void test_getPackageName()23 test_getPackageName:function(){24 //var v_clasObj1=vjo.Object.clazz;25 //assertEquals("vjo",v_clasObj1.getPackageName());26 assertEquals("vjo",new vjo.Object().getClass().getPackageName());27 },28 //> public void test_getPackageName1()29 test_getPackageName1:function(){30 //var v_clasObj1=vjo.Class.clazz;31 //assertEquals("vjo",v_clasObj1.getPackageName());32 },33 //> public void test_getPackageName2()34 test_getPackageName2:function(){35 //var v_clasObj1=this.vj$.ClassA.clazz;36 //assertEquals("org.eclipse.vjet.dsf.tests.js.rt.clz.tc1",v_clasObj1.getPackageName());37 assertEquals("org.eclipse.vjet.dsf.tests.js.rt.clz.tc1",new this.vj$.ClassA().getClass().getPackageName());38 },39 //> public void test_getPackageName3()40 test_getPackageName3:function(){41 //var v_clasObj1=this.vj$.IA.clazz;42 //assertEquals("org.eclipse.vjet.dsf.tests.js.rt.clz.tc1",v_clasObj1.getPackageName());43 },44 //> public void test_getPackageName4()45 test_getPackageName4:function(){46 //var v_clasObj1=this.vj$.EnumA.clazz;47 //assertEquals("org.eclipse.vjet.dsf.tests.js.rt.clz.tc1",v_clasObj1.getPackageName());48 assertEquals("org.eclipse.vjet.dsf.tests.js.rt.clz.tc1",this.vj$.EnumA.FRIDAY.getClass().getPackageName());49 }5051})
...
Bug3945.js
Source: Bug3945.js
...15.props({16 17})18.protos({19 //> public void test_getPackageName()20 test_getPackageName:function(){21 var v_clasObj1=vjo.Object.clazz;22 assertEquals("vjo",v_clasObj1.getPackageName());23 assertEquals("vjo",new vjo.Object().getClass().getPackageName());24 },25 //> public void test_getPackageName1()26 test_getPackageName1:function(){27 var v_clasObj1=vjo.Class.clazz;28 assertEquals("vjo",v_clasObj1.getPackageName());29 },30 //> public void test_getPackageName2()31 test_getPackageName2:function(){32 var v_clasObj1=this.vj$.ClassA.clazz;33 assertEquals("org.eclipse.vjet.dsf.tests.js.rt.clz.tc1",v_clasObj1.getPackageName());34 assertEquals("org.eclipse.vjet.dsf.tests.js.rt.clz.tc1",new this.vj$.ClassA().getClass().getPackageName());35 },36 //> public void test_getPackageName3()37 test_getPackageName3:function(){38 var v_clasObj1=this.vj$.IA.clazz;39 assertEquals("org.eclipse.vjet.dsf.tests.js.rt.clz.tc1",v_clasObj1.getPackageName());40 },41 //> public void test_getPackageName4()42 test_getPackageName4:function(){43 var v_clasObj1=this.vj$.EnumA.clazz;44 assertEquals("org.eclipse.vjet.dsf.tests.js.rt.clz.tc1",v_clasObj1.getPackageName());45 assertEquals("org.eclipse.vjet.dsf.tests.js.rt.clz.tc1",this.vj$.EnumA.FRIDAY.getClass().getPackageName());46 }4748})
...
appversion.js
Source: appversion.js
2exports.getAppId = function() {3 return new Promise(function(resolve, reject) {4 function _resolve() {5 var context = application.android.context;6 resolve(context.getPackageName());7 }8 try {9 if (application.android.context) {10 _resolve();11 } else {12 // if this is called before application.start() wait for the event to fire13 application.on(application.launchEvent, _resolve);14 }15 } catch (ex) {16 console.log("Error in appversion.getAppId: " + ex);17 reject(ex);18 }19 });20};21exports.getAppIdSync = function() {22 return application.android.context.getPackageName();23};24exports.getVersionName = function() {25 return new Promise(function(resolve, reject) {26 function _resolve() {27 var packageManager = application.android.context.getPackageManager();28 resolve(packageManager.getPackageInfo(application.android.context.getPackageName(), 0).versionName);29 }30 try {31 if (application.android.context) {32 _resolve();33 } else {34 // if this is called before application.start() wait for the event to fire35 application.on(application.launchEvent, _resolve);36 }37 } catch (ex) {38 console.log("Error in appversion.getVersionName: " + ex);39 reject(ex);40 }41 });42};43exports.getVersionNameSync = function() {44 var packageManager = application.android.context.getPackageManager();45 return packageManager.getPackageInfo(application.android.context.getPackageName(), 0).versionName;46};47exports.getVersionCode = function() {48 return new Promise(function(resolve, reject) {49 try {50 var packageManager = application.android.context.getPackageManager();51 resolve(packageManager.getPackageInfo(application.android.context.getPackageName(), 0).versionCode);52 } catch (ex) {53 console.log("Error in appversion.getVersionCode: " + ex);54 reject(ex);55 }56 });57};58exports.getVersionCodeSync = function() {59 var packageManager = application.android.context.getPackageManager();60 return packageManager.getPackageInfo(application.android.context.getPackageName(), 0).versionCode;...
install.js
Source: install.js
...13 return final;14}, {installing: [], finished: []});15if (packageResults.finished.length) {16 console.log('The following packages are already installed:');17 packageResults.finished.forEach(obj => console.log(getPackageName(obj.url)));18}19if (packageResults.installing.length) {20 console.log('\nInstalling the following packages:');21 packageResults.installing.forEach(obj => console.log(getPackageName(obj.url)));22 var allPromises = packageResults.installing.map(obj => obj.promise);23 Promise.all(allPromises)24 .then(() => console.log('All packages installed'));25} else {26 console.log('All packages installed')27}28function packageIsInstalled(url) {29 var packageName = getPackageName(url);30 try { 31 fs.accessSync('./bundle/' + packageName);32 return true;33 } catch (e) {34 return false;35 };36}37function getPackageName(url) {38 var pathArr = url.split('/');39 return pathArr[pathArr.length - 1];40}41function installPackage(url) {42 let commit;43 if (url.includes('#')) ({url, commit} = parseUrl(url))44 if (packageIsInstalled(url)) {45 return false;46 }47 return Clone(url, './bundle/' + getPackageName(url))48 .then(repo => {49 if (!commit) return repo50 console.log(`On ${getPackageName(url)}, checking out commit: ${commit}`)51 return repo.getCommit(commit)52 .then(gitCommit => {53 return Reset.reset(repo, gitCommit, Reset.TYPE.HARD)54 })55 })56}57function parseUrl(url) {58 [url, commit] = url.split('#')59 return {url, commit}60}61function ensureBundleExists() {62 try {63 fs.accessSync('./bundle');64 return false;...
getPackageName.spec.js
Source: getPackageName.spec.js
2import test from "tape";3// Import Internal Dependencies4import { getPackageName } from "../../src/utils/index.js";5test("getPackageName should return the package name (if there is not slash char at all)", (tape) => {6 tape.is(getPackageName("mocha"), "mocha");7 tape.end();8});9test("getPackageName should return the package name (first part before '/' character)", (tape) => {10 tape.is(getPackageName("foo/bar"), "foo");11 tape.end();12});13test("getPackageName should return the package name with organization namespace", (tape) => {14 tape.is(getPackageName("@slimio/is/test"), "@slimio/is");15 tape.end();...
get-package-name-test.js
Source: get-package-name-test.js
2const expect = require('chai').expect;3const getPackageName = require('../src/utils/get-package-name');4describe('utils/get-package-name', function() {5 it('gets package name from module path', function() {6 expect(getPackageName('foo')).to.equal('foo');7 expect(getPackageName('foo/bar')).to.equal('foo');8 expect(getPackageName('@foo/baz')).to.equal('@foo/baz');9 expect(getPackageName('@foo/baz/bar')).to.equal('@foo/baz');10 });...
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Since Jest tests are runtime tests, they only have access to runtime information. You're trying to use a type, which is compile-time information. TypeScript should already be doing the type aspect of this for you. (More on that in a moment.)
The fact the tests only have access to runtime information has a couple of ramifications:
If it's valid for getAll
to return an empty array (because there aren't any entities to get), the test cannot tell you whether the array would have had Entity
elements in it if it hadn't been empty. All it can tell you is it got an array.
In the non-empty case, you have to check every element of the array to see if it's an Entity
. You've said Entity
is a class, not just a type, so that's possible. I'm not a user of Jest (I should be), but it doesn't seem to have a test specifically for this; it does have toBeTruthy
, though, and we can use every
to tell us if every element is an Entity
:
it('should return an array of Entity class', async () => {
const all = await service.getAll()
expect(all.every(e => e instanceof Entity)).toBeTruthy();
});
Beware, though, that all calls to every
on an empty array return true
, so again, that empty array issue raises its head.
If your Jest tests are written in TypeScript, you can improve on that by ensuring TypeScript tests the compile-time type of getAll
's return value:
it('should return an array of Entity class', async () => {
const all: Entity[] = await service.getAll()
// ^^^^^^^^^^
expect(all.every(e => e instanceof Entity)).toBeTruthy();
});
TypeScript will complain about that assignment at compile time if it's not valid, and Jest will complain at runtime if it sees an array containing a non-Entity
object.
But jonrsharpe has a good point: This test may not be useful vs. testing for specific values that should be there.
Check out the latest blogs from LambdaTest on this topic:
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|<p>it('check_object_of_Car', () => {</p><p>
expect(newCar()).toBeInstanceOf(Car);</p><p>
});</p>|
| :- |
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