🐛 Best Candidate comparison by ref not matching correctly

Author: JustinGrote

ModuleFast.psm1

@@ -1673,7 +1673,7 @@ function Find-LocalModule {
         if ($Update -and ($ModuleSpec.Max -ne $candidateVersion)) {
           Write-Debug "${ModuleSpec}: Skipping $candidateVersion because -Update was specified and the version does not exactly meet the upper bound of the spec or no upper bound was specified at all, meaning there is a possible newer version remotely."
           #We can use this ref later to find out if our best remote version matches what is installed without having to read the manifest again
-          if ($BestCandidate -and $manifestCandidate.ModuleVersion -gt $bestCandidate.Value[$moduleSpec]) {
+          if ($bestCandidate.Value[$moduleSpec] -and $manifestCandidate.ModuleVersion -gt $bestCandidate.Value[$moduleSpec]) {
             Write-Debug "${ModuleSpec}: New Best Candidate Version $($manifestCandidate.ModuleVersion)"
             $BestCandidate.Value.Add($moduleSpec, $manifestCandidate)
           }

ModuleFast.tests.ps1

@@ -478,6 +478,12 @@ Describe 'Install-ModuleFast' -Tag 'E2E' {
     Install-ModuleFast @imfParams 'Az.Compute', 'Az.CosmosDB' -Update -Plan
     | Should -BeNullOrEmpty
   }
+  It 'Updates if multiple local versions installed' {
+    Install-ModuleFast @imfParams 'Plaster=1.1.1'
+    Install-ModuleFast @imfParams 'Plaster=1.1.3'
+    $actual = Install-ModuleFast @imfParams 'Plaster' -Update -PassThru
+    $actual.ModuleVersion | Should -Be '1.1.4'
+  }
 
   It 'Updates only dependent module that requires update' {
     Install-ModuleFast @imfParams @{ ModuleName = 'Az.Accounts'; RequiredVersion = '2.10.2' }