闅忕潃鍓嶇瀹炵幇鐨勪笟鍔￠€昏緫瓒婃潵瓒婂鏉傦紝鍓嶇鍗曞厓娴嬭瘯鐨勯噸瑕佹€т篃瓒婃潵瓒婇珮銆傝€屼竴涓ソ鐨勫崟鍏冩祴璇曚笉浠呭彲浠ヤ繚璇佷唬鐮佺殑璐ㄩ噺锛岃繕鍙互鎻愰珮寮€鍙戞晥鐜囥€傝繖绡囨枃绔犱細璁茶濡備綍缂栧啓鍓嶇鍗曞厓娴嬭瘯銆傝儗鏅畝鍗曚粙缁嶄竴涓嬭儗鏅紝绗旇€呭湪宸ヤ綔涓礋璐ｅ紑鍙戝墠绔疭DK锛屾祴璇曟鏋朵娇鐢╦est銆傛垜浠殑椤圭洰瀵逛唬鐮佹祴璇曡鐩栫巼鏈変竴瀹氱殑瑕佹眰锛岄渶瑕佹弧瓒筹細{"branches":80,"functions":80,"lines":80,"statements":80}姣斿鎴戜滑闇€瑕佹祴璇曡繖涓姛鑳?exportconstgetConfig=(name)=>{return{foo:()=>{},name:name||鈥滃尶鍚嶇殑鈥濓紝};};瀵瑰簲鐨勬祴璇曠敤渚嬩竴鑸槸杩欐牱鐨勶細describe("getConfig",()=>{test("濡傛灉鏈夊弬鏁板簲璇ヨ繑鍥瀗ame",()=>{constname="zxf4399";constconfig=getConfig(name);expect(config.name).toBe(name);});test("濡傛灉娌℃湁鍙傛暟锛屽簲璇ヨ繑鍥為粯璁ゅ悕绉?,()=>{constconfig=getConfig();expect(config.name).toBe("鍖垮悕");});});鎵ц缁撴灉濡備笅锛?---------|--------|---------|--------|--------|--------------------鏂囦欢|%Stmts|%鍒嗘敮|%鍑芥暟|%琛寍鏈鐩栫殑琛?s----------|----------|------------|--------|--------|------------------鎵€鏈夋枃浠秥100|100|50|100|绱㈠紩.js|100|100|50|100|---------|---------|---------|---------|----------|--------------------绗戣瘽锛氭湭杈惧埌鍔熻兘鐨勨€滃叏灞€鈥濊鐩栭槇鍊?80%)锛?0%娴嬭瘯濂椾欢锛?passed锛?totalTests锛?passed锛?totalSnapshots锛?totalTime锛?.444s锛屼及璁?sRan鎵€鏈夋祴璇曞浠躲€侲LIFECYCLE娴嬭瘯澶辫触銆傛湁鍏虫洿澶氳缁嗕俊鎭紝璇峰弬瑙佷笂鏂囥€傜敱浜庡姛鑳借鐩栫巼娌℃湁杈惧埌80%锛屾祴璇曞け璐ラ棶棰樺凡瑙ｅ喅-Phase1涔嬪墠鐨勮В鍐虫柟妗堬細test("shouldtestfoofunction",()=>{constconfig=getConfig();config.foo&&config.foo();});缁撴灉锛?---------|--------|----------|--------|---------|-------------------鏂囦欢|%Stmts|%鍒嗘敮|%鍑芥暟|%琛寍鏈鐩栫殑琛?s------------|---------|----------|--------|---------|---------------------鎵€鏈夋枃浠秥100|100|100|100|绱㈠紩.js|100|100|100|100|----------|--------|-----------|--------|---------|----------------娴嬭瘯濂椾欢锛?涓€氳繃锛?涓猼otalTests锛?涓€氳繃锛?涓猼otalSnapshots锛?totalTime锛?.448s锛屼及璁?sRan鎵€鏈夋祴璇曞浠?鎴戜滑鍙戠幇鍑芥暟鐨勮鐩栫巼宸茬粡杈惧埌浜?00%锛屼絾鏄垜娌℃湁鍦╯houldtestfoo鍑芥暟娴嬭瘯鐢ㄤ緥涓皟鐢╡xpect鍑芥暟鏄惁鍚堢悊绛旀鏄悎鐞嗙殑銆傝櫧鐒舵垜浠湪娴嬭瘯鐢ㄤ緥涓病鏈夎皟鐢╡xpect鍑芥暟锛屼絾鏄垜浠湪娴嬭瘯鐢ㄤ緥涓皟鐢ㄤ簡config.foo鍑芥暟锛岃€宑onfig.foo鍑芥暟瀹氫箟鍦╣etConfig鍑芥暟涓紝鎵€浠est浼氳涓烘垜浠祴璇曚簡杩欎釜鍑芥暟銆備絾瀹為檯涓婏紝杩欑娴嬭瘯琛屼负鏄病鏈夋剰涔夌殑锛屾垜浠彧鏄负浜嗘弧瓒虫祴璇曡鐩栫巼鐨勮姹傝€屽啓鐨勩€傝В鍐抽棶棰?Phase2瑙ｅ喅Phase1闂鎴戜滑闇€瑕佺煡閬搄est鐨勬祴璇曡鐩栫巼鏄€庝箞璁＄畻鐨勩€俲est鐨刢overageprovider鏈変袱绉嶏紝鍒嗗埆鏄細istanbuljsc8鐢变簬鎴戜滑椤圭洰涓娇鐢ㄧ殑coverageProvider鏄痓abel锛屾墍浠ュ彧闇€瑕佸叧娉╥stanbuljs鍗冲彲銆傚浜庤繖涓猲oop鍑芥暟娴嬭瘯鐢ㄤ緥锛屾垜浠彲浠ヤ娇鐢╥stanbulignorenext鏉ュ拷鐣ヨ繖涓嚱鏁扮殑娴嬭瘯瑕嗙洊鐜囥€俥xportconstgetConfig=(name)=>{return{foo:/*istanbulignorenext*/()=>{},name:name||鈥滃尶鍚嶇殑鈥濓紝};};褰撶劧鏇存帹鑽愭娊璞′竴涓猲oop鍑芥暟锛岀劧鍚庡湪娴嬭瘯鐢ㄤ緥涓皟鐢ㄨ繖涓嚱鏁般€?*istanbul蹇界暐涓嬩竴涓?/exportconstnoop=()=>{};exportconstgetConfig=(name)=>{return{foo:noop,name:name||鈥滃尶鍚嶇殑鈥濓紝};};鏈€缁堢粨鏋滀篃浠や汉婊℃剰锛?-----------|--------|----------|--------|--------|--------------------鏂囦欢|%Stmts|%鍒嗘敮|%鍑芥暟|%琛寍鏈鐩栫殑琛?s----------|--------|----------|--------|----------|---------------------鎵€鏈夋枃浠秥100|100|100|100|绱㈠紩.js|100|100|100|100|------------|----------|------------|--------|--------|------------------TestSuites:1passed,1totalTests:2passed,2totalSnapshots:0totalTime:0.352s,estimated1sRan鎵€鏈夋祴璇曞浠躲€傚浣曞啓鍗曞厓娴嬭瘯Phase1鍜孭hase2鏄В鍐抽棶棰樼殑鏂规硶銆備粠鎶€鏈笂璁睵hase2鏇村悎鐞嗭紙noop鍑芥暟鏈韩搴旇涓嶆槸鑰冩牳鐨勯噸鐐癸級锛屼絾鏄綘涓嶈兘璇碢hase1鐨勬柟妗堟槸閿欒鐨勩€傛墍浠ユ垜浠渶瑕佹€濊€冨浣曞啓鍗曞厓娴嬭瘯馃棣栧厛鏉ョ湅涓€涓畝鍗曠殑渚嬪瓙锛屾渶绠€鍗曠殑鍗曞厓娴嬭瘯锛歟xportconstsum=(a,b)=>a+b;//unittestimport{sum}from".";describe("sum",()=>{test("鍔?+2绛変簬3",()=>{expect(sum(1,2)).toBe(3);});});浠庤繖涓緥瀛愪腑锛屾垜浠彲浠ョ湅鍑哄崟鍏冩祴璇曠殑鍩烘湰缁撴瀯锛氬噯澶囪緭鍏ユ暟鎹紝璋冪敤琚祴鍑芥暟锛屾柇瑷€杈撳嚭缁撴灉锛屼换浣曞崟鍏冩祴璇曢兘鍙互閬靛惊杩欎釜妗嗘灦锛歡iven-when-then銆傛槸涓嶆槸鎸夌収杩欎釜妗嗘灦灏辫兘鍐欏ソ鍗曞厓娴嬭瘯鍛紵鍏跺疄涓嶇劧锛屾垜浠鐭ラ亾鍗曞厓娴嬭瘯鐨勭壒鐐癸細澶辫触鍘熷洜鏄庣‘锛屾墽琛岄€熷害蹇紝澶辫触鍘熷洜鏄庣‘锛屽綋涓斾粎褰撲笟鍔′唬鐮佸姛鑳芥敼鍙樻椂锛岃緭鍏ヤ笉鍙橈紝娴嬭瘯鎵嶄細澶辫触涓嶅彉銆傝繖涓壒鎬ф槸鎴戜滑閲嶆瀯浠ｇ爜鐨勪繚璇併€傚綋鎴戜滑閲嶆瀯浠ｇ爜鐨勬椂鍊欙紝鎴戜滑鍙互鏀惧績鐨勪慨鏀逛唬鐮侊紝鍥犱负鎴戜滑鐭ラ亾鍙娴嬭瘯閫氳繃锛岄偅涔堟垜浠殑浠ｇ爜灏辨槸姝ｇ‘鐨勩€傝〃鐜板姏闈炲父寮猴紝鍦ㄤ袱涓柟闈細鐪嬪埌娴嬭瘯鐢ㄤ緥鐨勬弿杩帮紝灏辩煡閬撶敤渚嬬殑鎰忓浘褰撴祴璇曞け璐ユ椂锛屽彲浠ュ揩閫熷畾浣嶉棶棰橈紝鎵ц閫熷害蹇€傚崟鍏冩祴璇曠殑鎵ц閫熷害闈炲父閲嶈锛屽洜涓烘垜浠笇鏈涘湪寮€鍙戣繃绋嬩腑锛岃兘澶熷揩閫熷緱鍒板弽棣堬紝鑰屼笉鏄暱鏃堕棿绛夊緟銆備负浜嗚揪鍒拌繖涓洰鐨勶紝鎴戜滑闇€瑕侊細Mock澶栭儴渚濊禆锛屾瘮濡俉ebSocket杩炴帴锛屾暟鎹簱杩炴帴绛夈€傛祴璇曚唬鐮佷笉鍖呭惈閫昏緫锛屽惁鍒欐祴璇曞け璐ョ殑鏃跺€欎笉鐭ラ亾鏄笉鏄帴鍙ｇ殑闂娴嬭瘯浠ｇ爜鎴栦笟鍔′唬鐮?funny.jpg)璁╂垜浠湅涓€涓洿濂界殑鍗曞厓娴嬭瘯绀轰緥锛歟xportclassEventEmitter{constructor(){this.events={};}on(event,listener){this.events[浜嬩欢]=this.events[浜嬩欢]||[];this.events[浜嬩欢].push(鐩戝惉鍣?;return()=>this.off(event,listener);}once(event,listener){constremove=this.on(event,(...args)=>{remove();listener(...args);});}emit(event,...args){this.events[event]?.forEach((listener)=>listener(...args));}off(event,listener){this.events[event]=this.events[event]?.filter((l)=>l!==listener);}}鍗曞厓娴嬭瘯锛氫粠"."瀵煎叆{EventEmitter};leteventEmitter;beforeEach(()=>{eventEmitter=newEventEmitter();});describe("EventEmitter",()=>{describe("on",()=>{test("搴旇涓轰竴涓簨浠舵坊鍔犱竴涓洃鍚櫒",()=>{constl鐩戝惉鍣?jest.fn();eventEmitter.on("浜嬩欢",渚﹀惉鍣?;eventEmitter.emit("浜嬩欢");鏈熸湜锛堝惉浼楋級.toHaveBeenCalled();});test('褰撹繑鍥炵殑鈥滃垹闄も€濆嚱鏁拌璋冪敤鏃跺簲璇ュ垹闄ょ洃鍚櫒',()=>{constlistener=jest.fn();constremove=eventEmitter.on("event",listener);remove();eventEmitter.emit("event");expect(listener).not.toHaveBeenCalled();});});describe("once",()=>{test("搴旇涓轰竴涓簨浠舵坊鍔犱竴涓竴娆℃€х洃鍚櫒",()=>{constlistener=jest.fn();eventEmitter.once("event",listener);eventEmitter.emit("浜嬩欢");eventEmitter.emit("浜嬩欢");expect(listener).toHaveBeenCalledTimes(1);});});describe("emit",()=>{test("搴旇涓轰竴涓簨浠惰皟鐢ㄦ墍鏈夌洃鍚櫒",()=>{constlistener1=jest.fn();constlistener2=jest.fn();eventEmitter.on("浜嬩欢",listener1);eventEmitter.on("浜嬩欢",listener2);eventEmitter.emit("浜嬩欢");鏈熸湜锛坙istener1锛?toHaveBeenCalled锛堬級锛涙湡鏈涳紙listener2锛?toHaveBeenCalled锛堬級锛泒);test("搴旇灏嗗弬鏁颁紶閫掔粰鐩戝惉鍣?,()=>{constlistener=jest.fn();eventEmitter.on("event",listener);eventEmitter.emit("event","arg1","arg2");expect(listener).toHaveBeenCalledWith("arg1","arg2");});});describe("off",()=>{test("搴旇鍒犻櫎浜嬩欢鐨勪睛鍚櫒",()=>{constlistener=jest.fn();eventEmitter.on("event",listener);eventEmitter.off("event",listener);eventEmitter.emit("event");expect(listener).not.toHaveBeenCalled();});});});杩欎釜娴嬭瘯浠ｇ爜鐨勭壒鐐癸細浠ｇ爜绠€娲侊紝娌℃湁澶氫綑鐨勯€昏緫銆傛祴璇曠敤渚嬬殑鎻忚堪闈炲父娓呮櫚锛屽彲浠ュ緢蹇煡閬撶敤渚嬬殑鎰忓浘銆傜敱浜庢病鏈夊閮ㄤ緷璧栵紝娴嬭瘯鐢ㄤ緥鐨勬墽琛岄€熷害闈炲父蹇€備竴涓ソ鐨勫崟鍏冩祴璇曞簲璇ョ鍚坓iven-when-then鍘熷垯锛岃兘娓呮櫚鎻忚堪娴嬭瘯鎰忓浘锛屾墽琛岄€熷害蹇紝涓嶅寘鍚€昏緫鏈綔鍝佷负鍘熷垱锛屼娇鐢ㄣ€婄讲鍚?闈炲晢涓氭€т娇鐢?绂佹婕旂粠 4.0 鍥介檯銆嬭鍙崗璁?/p>
