Remove whitespace from branch name

src/WingetCreateCore/Common/GitHub.cs

@@ -300,7 +300,7 @@ private async Task<PullRequest> SubmitPRAsync(string packageId, string version,
                 repo = await this.github.Repository.Get(this.wingetRepoOwner, this.wingetRepo);
             }
 
-            string newBranchName = $"{packageId}-{version}-{Guid.NewGuid()}";
+            string newBranchName = $"{packageId}-{version}-{Guid.NewGuid()}".Replace(" ", string.Empty);
             string newBranchNameHeads = $"heads/{newBranchName}";
 
             if (string.IsNullOrEmpty(prTitle))

src/WingetCreateTests/WingetCreateTests/Resources/TestPublisher.VersionWithWhitespace.yaml

@@ -0,0 +1,15 @@
+PackageIdentifier: TestPublisher.VersionWithWhitespace
+PackageVersion: test whitespace version
+PackageName: Test app
+Publisher: Test publisher
+License: MIT
+ShortDescription: A manifest used to test the branch name is trimmed of whitespace.
+InstallerLocale: en-US
+Installers:
+  - Architecture: x64
+    InstallerUrl: https://fakedomain.com/WingetCreateTestExeInstaller.exe
+    InstallerType: exe
+    InstallerSha256: A7803233EEDB6A4B59B3024CCF9292A6FFFB94507DC998AA67C5B745D197A5DC
+PackageLocale: en-US
+ManifestType: singleton
+ManifestVersion: 1.0.0

src/WingetCreateTests/WingetCreateTests/UnitTests/GitHubTests.cs

@@ -3,6 +3,7 @@
 
 namespace Microsoft.WingetCreateUnitTests
 {
+    using System;
     using System.Collections.Generic;
     using System.Linq;
     using System.Threading.Tasks;
@@ -77,5 +78,31 @@ public async Task GetLatestManifestAndSubmitPR()
             await this.gitHub.ClosePullRequest(pullRequest.Number);
             StringAssert.StartsWith(string.Format(GitHubPullRequestBaseUrl, this.WingetPkgsTestRepoOwner, this.WingetPkgsTestRepo), pullRequest.HtmlUrl, PullRequestFailedToGenerate);
         }
+
+        /// <summary>
+        /// Verifies that the branch name is trimmed of whitespace when submitting a PR. Successful PR generation verifies that the branch name was trimmed.
+        /// </summary>
+        /// <returns>A <see cref="Task"/> representing the asynchronous unit test.</returns>
+        [Test]
+        public async Task RemoveWhitespaceFromBranchName()
+        {
+            string packageId = "TestPublisher.VersionWithWhitespace";
+            List<string> manifestContents = TestUtils.GetInitialManifestContent($"{packageId}.yaml");
+            Manifests manifests = Serialization.DeserializeManifestContents(manifestContents);
+            Assert.That(manifests.SingletonManifest.PackageIdentifier, Is.EqualTo(packageId), FailedToRetrieveManifestFromId);
+
+            PullRequest pullRequest = new();
+            try
+            {
+                pullRequest = await this.gitHub.SubmitPullRequestAsync(manifests, this.SubmitPRToFork);
+            }
+            catch (Exception e)
+            {
+                Assert.Fail($"Failed to generate pull request. {e.Message}");
+            }
+
+            await this.gitHub.ClosePullRequest(pullRequest.Number);
+            StringAssert.StartsWith(string.Format(GitHubPullRequestBaseUrl, this.WingetPkgsTestRepoOwner, this.WingetPkgsTestRepo), pullRequest.HtmlUrl, PullRequestFailedToGenerate);
+        }
     }
 }

src/WingetCreateTests/WingetCreateTests/WingetCreateTests.csproj

@@ -36,6 +36,9 @@
     <None Update="Resources\Multifile.MsixTest\Multifile.MsixTest.locale.en-US.yaml">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </None>
+    <None Update="Resources\TestPublisher.VersionWithWhitespace.yaml">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
     <None Update="Resources\TestPublisher.RetainInstallerFields.yaml">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </None>