Fix installer renaming failure from encoded url

src/AppInstallerCLICore/Workflows/DownloadFlow.cpp

@@ -69,7 +69,7 @@ namespace AppInstaller::CLI::Workflow
 
             // Assuming that we find a safe stem value in the URI, use it.
             // This should be extremely common, but just in case fall back to the older name style.
-            if (filename.has_stem() && ((filename.string().size() + installerExtension.size()) < MAX_PATH))
+            if (filename.has_stem() && ((filename.wstring().size() + installerExtension.size()) < MAX_PATH))
             {
                 filename = filename.stem();
             }

src/AppInstallerCLITests/AppInstallerCLITests.vcxproj

@@ -257,6 +257,9 @@
     <CopyFileToFolders Include="TestData\Manifest-Good.yaml">
       <DeploymentContent>true</DeploymentContent>
     </CopyFileToFolders>
+    <CopyFileToFolders Include="TestData\InstallFlowTest_EncodedUrl.yaml">
+      <DeploymentContent>true</DeploymentContent>
+    </CopyFileToFolders>
     <CopyFileToFolders Include="TestData\InstallFlowTest_Exe.yaml">
       <DeploymentContent>true</DeploymentContent>
     </CopyFileToFolders>

src/AppInstallerCLITests/AppInstallerCLITests.vcxproj.filters

@@ -510,6 +510,9 @@
     <CopyFileToFolders Include="TestData\InstallFlowTest_Msix_DownloadFlow.yaml">
       <Filter>TestData</Filter>
     </CopyFileToFolders>
+    <CopyFileToFolders Include="TestData\InstallFlowTest_EncodedUrl.yaml">
+      <Filter>TestData</Filter>
+    </CopyFileToFolders>
     <CopyFileToFolders Include="TestData\InstallFlowTest_Exe.yaml">
       <Filter>TestData</Filter>
     </CopyFileToFolders>

src/AppInstallerCLITests/TestData/InstallFlowTest_EncodedUrl.yaml

@@ -0,0 +1,18 @@
+Id: AppInstallerCliTest.UrlEncodeTest
+Version: 1.0.0.0
+Name: AppInstaller Test Exe Installer
+Publisher: Microsoft Corporation
+AppMoniker: AICLITestExe
+License: Test
+ProductCode: AppInstallerCliTest.TestExeInstaller
+Installers: 
+    - Arch: x64
+      Url: https://EncodedUrlTest/%E6%B5%8B%E8%AF%95.exe
+      InstallerType: exe
+      Sha256: 65DB2F2AC2686C7F2FD69D4A4C6683B888DC55BFA20A0E32CA9F838B51689A3B
+      Switches:
+        Custom: /encodedUrl
+        SilentWithProgress: /silentwithprogress
+        Silent: /silence
+        Update: /update
+ManifestVersion: 0.1.0

src/AppInstallerCLITests/WorkFlow.cpp

@@ -884,6 +884,38 @@ TEST_CASE("ExeInstallFlowWithTestManifest", "[InstallFlow][workflow]")
     REQUIRE(installResultStr.find("/silentwithprogress") != std::string::npos);
 }
 
+TEST_CASE("InstallFlow_RenameFromEncodedUrl", "[InstallFlow][workflow]")
+{
+    TestCommon::TempFile installResultPath("TestExeInstalled.txt");
+
+    std::ostringstream installOutput;
+    TestContext context{ installOutput, std::cin };
+    auto previousThreadGlobals = context.SetForCurrentThread();
+    OverrideForCheckExistingInstaller(context);
+    context.Override({ DownloadInstallerFile, [](TestContext& context)
+    {
+        context.Add<Data::HashPair>({ {}, {} });
+        auto installerPath = std::filesystem::temp_directory_path();
+        installerPath /= "EncodedUrlTest.exe";
+        std::filesystem::copy(TestDataFile("AppInstallerTestExeInstaller.exe"), installerPath, std::filesystem::copy_options::overwrite_existing);
+        context.Add<Data::InstallerPath>(installerPath);
+    } });
+    OverrideForUpdateInstallerMotw(context);
+    context.Args.AddArg(Execution::Args::Type::Manifest, TestDataFile("InstallFlowTest_EncodedUrl.yaml").GetPath().u8string());
+
+    InstallCommand install({});
+    install.Execute(context);
+    INFO(installOutput.str());
+
+    // Verify Installer is called and parameters are passed in.
+    REQUIRE(std::filesystem::exists(installResultPath.GetPath()));
+    std::ifstream installResultFile(installResultPath.GetPath());
+    REQUIRE(installResultFile.is_open());
+    std::string installResultStr;
+    std::getline(installResultFile, installResultStr);
+    REQUIRE(installResultStr.find("/encodedUrl") != std::string::npos);
+}
+
 TEST_CASE("InstallFlowNonZeroExitCode", "[InstallFlow][workflow]")
 {
     TestCommon::TempFile installResultPath("TestExeInstalled.txt");