1 files changed, 27 insertions, 1 deletions
diff --git a/scripts/azure-pipelines/end-to-end-tests.ps1 b/scripts/azure-pipelines/end-to-end-tests.ps1
index 50e7f6afd..3b6fe5aaa 100644
--- a/scripts/azure-pipelines/end-to-end-tests.ps1
+++ b/scripts/azure-pipelines/end-to-end-tests.ps1
@@ -41,7 +41,8 @@ $commonArgs = @(
     $Triplet,
     "--x-buildtrees-root=$buildtreesRoot",
     "--x-install-root=$installRoot",
-    "--x-packages-root=$packagesRoot"
+    "--x-packages-root=$packagesRoot",
+    "--overlay-ports=scripts/e2e_ports"
 )
 $CurrentTest = 'unassigned'
 
@@ -190,6 +191,31 @@ if ((Get-ChildItem $NuGetRoot -Filter '*.nupkg' | Measure-Object).Count -ne 1) {
     throw "In '$CurrentTest': did not create exactly 1 NuGet package"
 }
 
+# Test that prohibiting backcompat features actually prohibits
+$backcompatFeaturePorts = @('vcpkg-uses-test-cmake', 'vcpkg-uses-vcpkg-common-functions')
+foreach ($backcompatFeaturePort in $backcompatFeaturePorts) {
+    $succeedArgs = $commonArgs + @('install',$backcompatFeaturePort,'--no-binarycaching')
+    $failArgs = $succeedArgs + @('--x-prohibit-backcompat-features')
+    $CurrentTest = "Should fail: ./vcpkg $($failArgs -join ' ')"
+    Write-Host $CurrentTest
+    ./vcpkg @failArgs
+    if ($LastExitCode -ne 0) {
+        Write-Host "... failed (this is good!)"
+    } else {
+        throw $CurrentTest
+    }
+
+    # Install failed when prohibiting backcompat features, so it should succeed if we allow them
+    $CurrentTest = "Should succeeed: ./vcpkg $($succeedArgs -join ' ')"
+    Write-Host $CurrentTest
+    ./vcpkg @succeedArgs
+    if ($LastExitCode -ne 0) {
+        throw $CurrentTest
+    } else {
+        Write-Host "... succeeded."
+    }
+}
+
 # Test export
 $CurrentTest = 'Prepare for export test'
 Write-Host $CurrentTest