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Commita92f866

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committed
setup Test Runner
1 parentab13f52 commita92f866

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4 files changed

+87
-153
lines changed

4 files changed

+87
-153
lines changed

‎src/actions/runTest/channel.ts

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import*asvscodefrom'vscode'
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letchannel:vscode.OutputChannel
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exportconstgetOutputChannel=(name:string):vscode.OutputChannel=>{
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if(!channel){
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channel=vscode.window.createOutputChannel(name)
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}
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returnchannel
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}

‎src/actions/runTest/index.ts

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import*asvscodefrom'vscode'
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importnodefrom'../../services/node'
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// TODO: use tap parser to make it easier to support other test runners
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// ensure only latest run_test action is taken
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letcurrentId=0
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// quick solution to prevent processing multiple results
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// NOTE: may be possible to kill child process early
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constshouldExitEarly=(processId:number):boolean=>{
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returncurrentId!==processId
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}
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letchannel:vscode.OutputChannel
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constgetOutputChannel=(name:string):vscode.OutputChannel=>{
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if(!channel){
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channel=vscode.window.createOutputChannel(name)
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}
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returnchannel
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}
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interfaceCallbacks{
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onSuccess():void
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onFail():void
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onRun():void
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onError():void
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}
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interfaceTestRunnerConfig{
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command:string
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parser(output:string):boolean
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}
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exportconstcreateTestRunner=(config:TestRunnerConfig,callbacks:Callbacks)=>{
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constoutputChannelName='TEST_OUTPUT'
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return{
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run(){
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console.log('------------------- run test ------------------')
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constprocessId=++currentId
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callbacks.onRun()
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try{
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const{stdout}=awaitnode.exec(config.command)
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}
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}
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}
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}
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asyncfunctionrunTest({onSuccess, onFail, onRun, onError}:Callbacks):Promise<void>{
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// TODO: verify test runner for args
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// jest CLI docs https://jestjs.io/docs/en/cli
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// const testArgs = [
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// '--json',
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// '--onlyChanged',
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// '--env=node',
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// '--maxConcurrency=4',
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// '--maxWorkers=4'
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// ]
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constcommandLine=`npm test --${testArgs.join(' ')}`
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try{
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// capture position early on test start
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// in case position changes
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const{stdout}=awaitnode.exec(commandLine)
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if(shouldExitEarly(processId)){
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// exit early
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return
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}
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if(stdout){
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constlines=stdout.split(/\r{0,1}\n/)
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for(constlineoflines){
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if(line.length>0){
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constregExp=/^{\"numFailedTestSuites/
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constmatches=regExp.exec(line)
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if(matches&&matches.length){
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constresult=JSON.parse(line)
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if(result.success){
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if(shouldExitEarly(processId)){
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// exit early
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return
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}
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console.log('success!')
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onSuccess()
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}else{
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console.log('NOT SUCCESS?')
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}
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}
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}
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}
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}
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}catch(err){
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if(shouldExitEarly(processId)){
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// exit early
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return
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}
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// error contains output & error message
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// output can be parsed as json
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const{stdout, stderr}=err
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console.log('TEST FAILED',stdout)
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if(!stdout){
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console.error('SOMETHING WENT WRONG WITH A PASSING TEST')
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onError()
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return
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}
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// test runner failed
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channel=getOutputChannel(outputChannelName)
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if(stdout){
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constlines=stdout.split(/\r{0,1}\n/)
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for(constlineoflines){
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if(line.length>0){
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constdataRegExp=/^{\"numFailedTestSuites"/
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constmatches=dataRegExp.exec(line)
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if(matches&&matches.length){
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constresult=JSON.parse(line)
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constfirstError=result.testResults.find((t:any)=>t.status==='failed')
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if(firstError){
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if(shouldExitEarly(processId)){
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// exit early
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return
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}
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onFail()
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}else{
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console.error('NOTE: PARSER DID NOT WORK FOR ',line)
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}
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}
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}
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}
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}
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if(stderr){
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channel.show(false)
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channel.appendLine(stderr)
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}
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}
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}
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exportdefaultrunTest

‎src/actions/runTest/testRunner.ts

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importnodefrom'../../services/node'
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import{getOutputChannel}from'./channel'
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import{setLatestProcess,isLatestProcess}from'./throttle'
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// TODO: use tap parser to make it easier to support other test runners
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// TODO: how to load test runner parser
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// TODO: where to instantiate test runner
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interfaceCallbacks{
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onSuccess():void
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onFail():void
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onRun():void
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onError():void
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}
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interfaceTestRunnerConfig{
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command:string
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parser(output:string):Error|null
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}
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exportconstcreateTestRunner=(config:TestRunnerConfig,callbacks:Callbacks)=>{
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constoutputChannelName='TEST_OUTPUT'
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returnasync()=>{
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console.log('------------------- run test ------------------')
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// track processId to prevent multiple
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constprocessId=setLatestProcess()
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if(!isLatestProcess(processId)){return}
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// flag as running
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callbacks.onRun()
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letresult:{stdout:string|undefined,stderr:string|undefined}
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try{
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result=awaitnode.exec(config.command)
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}catch(err){
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result=err
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}
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const{stdout, stderr}=result
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// simple way to throttle requests
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if(!stdout||!isLatestProcess(processId)){return}
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if(stderr){
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callbacks.onError()
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// open terminal with error string
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constchannel=getOutputChannel(outputChannelName)
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channel.show(false)
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channel.appendLine(stderr)
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return
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}
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// pass or fail?
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consttestsFailed=config.parser(stdout)
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if(testsFailed===null){
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callbacks.onSuccess()
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}else{
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// open terminal with failed test string
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constchannel=getOutputChannel(outputChannelName)
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channel.show(false)
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channel.appendLine(testsFailed.message)
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callbacks.onFail()
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}
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}
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}

‎src/actions/runTest/throttle.ts

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// ensure only latest run_test action is taken
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letcurrentId=0
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exportconstsetLatestProcess=()=>currentId++
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// quick solution to prevent processing multiple results
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// NOTE: may be possible to kill child process early
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exportconstisLatestProcess=(processId:number):boolean=>currentId===processId

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