Apply azdo ext best practices for testing and fix mocks

.vscode/cspell-devops-ext.txt

@@ -1,4 +1,7 @@
-vsix
-tsbuildinfo
-codepaths
 azuretools
+codepaths
+LASTEXITCODE
+tmrm
+toolrunner
+tsbuildinfo
+vsix

ext/azuredevops/setupAzd/.gitignore

@@ -3,3 +3,4 @@ node_modules
 .taskkey
 index.js
 tests/*.js
+tests/*.log

ext/azuredevops/setupAzd/index.ts

@@ -1,5 +1,5 @@
 import * as task from 'azure-pipelines-task-lib/task'
-import * as cp from 'child_process'
+import * as toolRunner from 'azure-pipelines-task-lib/toolrunner'
 
 export async function runMain(): Promise<void> {
     try {
@@ -16,25 +16,51 @@ export async function runMain(): Promise<void> {
             return
         }
         const version = task.getInput('version') || 'latest'
-        const windowsInstallScript = `powershell -c "$scriptPath = \\"$($env:TEMP)\\install-azd.ps1\\"; Invoke-RestMethod 'https://aka.ms/install-azd.ps1' -OutFile $scriptPath; . $scriptPath -Version '${version}' -Verbose:$true; Remove-Item $scriptPath"`
-        const linuxOrMacOSInstallScript = `curl -fsSL https://aka.ms/install-azd.sh | sudo bash -s -- --version ${version} --verbose`
 
         console.log(`Installing azd version ${version} on ${os}.`)
 
         if (os === 'win32') {
-            console.log(cp.execSync(windowsInstallScript).toString())
+            const powershellPath = task.which('powershell', true)
+            const powershell: toolRunner.ToolRunner = task.tool(powershellPath)
+            const installScript = `$scriptPath = "$($env:TEMP)\\install-azd.ps1"; Invoke-RestMethod 'https://aka.ms/install-azd.ps1' -OutFile $scriptPath; . $scriptPath -Version '${version}' -Verbose:$true; Remove-Item $scriptPath`
+            powershell.arg('-NoLogo')
+            powershell.arg('-NoProfile')
+            powershell.arg('-NonInteractive')
+            powershell.arg('-Command')
+            powershell.arg(installScript)
+
+            const installResult = await powershell.exec()
+            if (installResult !== 0) {
+                task.setResult(task.TaskResult.Failed, `Failed to install azd. Exit code: ${installResult}`)
+                return
+            }
 
             // Add azd to PATH
             task.setVariable('PATH', `${envPath};${localAppData}\\Programs\\Azure Dev CLI`)
-        } else {
-            console.log(cp.execSync(linuxOrMacOSInstallScript).toString())
-        }
 
-        // Run `azd version` to make sure if azd installation failed, it returns error on windows
-        if (os === 'win32') {
-            const azdVersion = `"${localAppData}\\Programs\\Azure Dev CLI\\azd.exe" version`
-            cp.execSync(azdVersion)
+            // Run `azd version` to make sure installation succeeded
+            const azdPath = `${localAppData}\\Programs\\Azure Dev CLI\\azd.exe`
+            const azd: toolRunner.ToolRunner = task.tool(azdPath)
+            azd.arg('version')
+            const versionResult = await azd.exec()
+            if (versionResult !== 0) {
+                task.setResult(task.TaskResult.Failed, `azd version check failed. Exit code: ${versionResult}`)
+                return
+            }
+        } else {
+            const bashPath = task.which('bash', true)
+            const bash: toolRunner.ToolRunner = task.tool(bashPath)
+            bash.arg('-c')
+            bash.arg(`curl -fsSL https://aka.ms/install-azd.sh | sudo bash -s -- --version ${version} --verbose`)
+
+            const installResult = await bash.exec()
+            if (installResult !== 0) {
+                task.setResult(task.TaskResult.Failed, `Failed to install azd. Exit code: ${installResult}`)
+                return
+            }
         }
+
+        console.log(`Successfully installed azd version ${version}.`)
     } catch (err: any) {
         task.setResult(task.TaskResult.Failed, err.message)
     }