Simplify handling of Composer version to be installed

Author: mlocati

PhpManager/public/Install-Composer.ps1

@@ -66,7 +66,6 @@
         $installerUrl = 'https://getcomposer.org/installer';
         $installer = ''
         $tempPhar = ''
-        $actualPharUrl = ''
         $pathCreatedHere = $false
         try {
             if ($NoCache) {
@@ -75,7 +74,7 @@
                 Write-Verbose "Downloading from $installerUrl"
                 Invoke-WebRequest -UseBasicParsing -Uri $installerUrl -OutFile $installer
             } else {
-                $installer = Get-FileFromUrlOrCache -Url $installerUrl -CachedFileName 'composer-installer.php'
+                $installer, $foo = Get-FileFromUrlOrCache -Url $installerUrl -CachedFileName 'composer-installer.php'
             }
             $tempPhar  = [System.IO.Path]::GetTempFileName();
             $arguments = @()
@@ -86,35 +85,16 @@
                 if ($Version -match '\.') {
                     $arguments += '--version=' + $Version
                 } else {
-                    $actualPharUrl = "https://getcomposer.org/composer-$Version.phar"
-                    switch ($Version) {
-                        '1' {
-                            $testVersion = '1.10.16'
-                        }
-                        '2' {
-                            $testVersion = '2.0.1'
-                        }
-                        default {
-                            $testVersion = "$Version.0.1"
-                        }
-                    }
-                    $arguments += "--version=$testVersion"
-                    $arguments += '--check'
+                    $arguments += '--' + $Version
                 }
             }
             $arguments += '2>&1'
-            Write-Verbose "Launching Composer installer"
+            Write-Verbose ('Launching Composer installer with: ' + ($arguments -join ' '))
             $installerResult = & $phpVersion.ExecutablePath $arguments
             if ($LASTEXITCODE -ne 0) {
                 throw $installerResult
             }
             Write-Verbose "Composer installed succeeded"
-            if ($actualPharUrl -ne '') {
-                Write-Verbose "Downloading Composer"
-                Set-NetSecurityProtocolType
-                Write-Verbose "Downloading from $actualPharUrl"
-                Invoke-WebRequest -UseBasicParsing -Uri $actualPharUrl -OutFile $tempPhar
-            }
             Write-Verbose "Installing to $Path"
             If (-Not(Test-Path -LiteralPath $Path)) {
                 New-Item -ItemType Directory -Path $Path | Out-Null

test/tests/Install-Composer.Tests.ps1

@@ -1,4 +1,22 @@
 Describe 'Install-Composer' {
+    BeforeAll {
+        function GetInstalledComposerVersion()
+        {
+            param (
+                [Parameter(Mandatory = $true, Position = 0)]
+                [string] $composerBatPath
+            )
+            $output = & $composerBat @('--version')
+            if ($LASTEXITCODE -ne 0) {
+                return "Failed to launch composer. Its output is`n$output"
+            }
+            $match = $output | Select-String -Pattern 'Composer\s+(?:v(?:er(?:s(?:ion)?)?)?\.?\s*)?(\d\S*)'
+            if (-not($match)) {
+                return "Failed to detect Composer version from`n$output"
+            }
+            return $match.Matches.Groups[1].Value
+        }
+    }
     Mock -ModuleName PhpManager Get-PhpDownloadCache { return Join-Path -Path $Global:PHPMANAGER_TESTPATH -ChildPath download-cache }
     $phpPath = Join-Path -Path $Global:PHPMANAGER_TESTINSTALLS -ChildPath (New-Guid).Guid
     $composerPath = Join-Path -Path $Global:PHPMANAGER_TESTINSTALLS -ChildPath (New-Guid).Guid
@@ -16,8 +34,13 @@
             Update-PhpCAInfo -Path $phpPath
             Install-Composer -Path $composerPath -PhpPath $phpPath -Scope User -NoAddToPath -NoCache
             $composerBat | Should -Exist
-            & $composerBat @('--version')
-            $LASTEXITCODE | Should -Be 0
+            GetInstalledComposerVersion($composerBat) | Should -Match '^([2-9]\d*|1\d+)\.'
+            Install-Composer -Path $composerPath -PhpPath $phpPath -Scope User -NoAddToPath -NoCache -Version 1
+            GetInstalledComposerVersion($composerBat) | Should -Match '^1\.'
+            Install-Composer -Path $composerPath -PhpPath $phpPath -Scope User -NoAddToPath -NoCache -Version 2
+            GetInstalledComposerVersion($composerBat) | Should -Match '^2\.'
+            Install-Composer -Path $composerPath -PhpPath $phpPath -Scope User -NoAddToPath -NoCache -Version '1.10.15'
+            GetInstalledComposerVersion($composerBat) | Should -Be '1.10.15'
         } finally {
             try {
                 if (Test-Path -LiteralPath $composerPath) {