Allow prerelease versions

registry.json

@@ -1566,6 +1566,17 @@
         "listed": true,
         "version": "1.4.1"
     },
+    "StyleCop.Analyzers": {
+        "listed": true,
+        "version": "1.0.0",
+        "analyzer": true,
+        "includePrerelease": true
+    },
+    "StyleCop.Analyzers.Unstable": {
+        "listed": true,
+        "version": "1.1.0.47",
+        "analyzer": true
+    },
     "SunCalcNet": {
         "listed": true,
         "version": "1.1.0"

src/UnityNuGet.Tests/PlatformDefinitionTests.cs

@@ -1,5 +1,4 @@
-using System;
-using System.Collections.Generic;
+using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using NUnit.Framework;

src/UnityNuGet.Tests/RegistryCacheTests.cs

@@ -3,17 +3,29 @@
 using System.Threading;
 using System.Threading.Tasks;
 using Microsoft.Extensions.Hosting;
-using Microsoft.Extensions.Logging.Testing;
 using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Logging.Testing;
 using Microsoft.Extensions.Options;
 using Moq;
+using NuGet.Versioning;
 using NUnit.Framework;
 using UnityNuGet.Npm;
 
 namespace UnityNuGet.Tests
 {
     public class RegistryCacheTests
     {
+        [Test]
+        [TestCase("1.0.0", "1.0.0")]
+        [TestCase("1.0.0.0", "1.0.0")]
+        [TestCase("1.0.0.1", "1.0.0-1")]
+        [TestCase("1.0.0-preview.1.24080.9", "1.0.0-preview.1.24080.9")]
+        [TestCase("1.0.0.1-preview.1.24080.9", "1.0.0-1.preview.1.24080.9")]
+        public void GetNpmVersion(string version, string expected)
+        {
+            Assert.That(RegistryCache.GetNpmVersion(NuGetVersion.Parse(version)), Is.EqualTo(expected));
+        }
+
         [Test]
         public async Task TestBuild()
         {

src/UnityNuGet.Tests/VersionRangeConverterTests.cs

@@ -10,7 +10,7 @@ public class VersionRangeConverterTests
         [Test]
         public void Read_Write_Success()
         {
-            string json = @"{""ignore"":false,""listed"":false,""version"":""[1.2.3, )"",""defineConstraints"":[],""analyzer"":false}";
+            string json = @"{""ignore"":false,""listed"":false,""version"":""[1.2.3, )"",""defineConstraints"":[],""analyzer"":false,""includePrerelease"":false}";
 
             RegistryEntry registryEntry = JsonSerializer.Deserialize(json, UnityNugetJsonSerializerContext.Default.RegistryEntry)!;
 

src/UnityNuGet/RegistryCache.cs

@@ -168,13 +168,13 @@ public async Task Build()
             }
         }
 
-        private async Task<IEnumerable<IPackageSearchMetadata>?> GetMetadataFromSources(string packageName)
+        private async Task<IEnumerable<IPackageSearchMetadata>?> GetMetadataFromSources(string packageName, bool includePrerelease)
         {
             foreach (SourceRepository source in _sourceRepositories)
             {
                 PackageMetadataResource packageMetadataResource = source.GetResource<PackageMetadataResource>();
 
-                IEnumerable<IPackageSearchMetadata> result = await packageMetadataResource.GetMetadataAsync(packageName, includePrerelease: false, includeUnlisted: false, _sourceCacheContext, _logger, CancellationToken.None);
+                IEnumerable<IPackageSearchMetadata> result = await packageMetadataResource.GetMetadataAsync(packageName, includePrerelease, includeUnlisted: false, _sourceCacheContext, _logger, CancellationToken.None);
 
                 if (result.Any())
                 {
@@ -251,7 +251,7 @@ private async Task BuildInternal()
                     }
                 }
 
-                IEnumerable<IPackageSearchMetadata>? packageMetaIt = await GetMetadataFromSources(packageName);
+                IEnumerable<IPackageSearchMetadata>? packageMetaIt = await GetMetadataFromSources(packageName, packageEntry.IncludePrerelease);
                 IPackageSearchMetadata[] packageMetas = packageMetaIt != null ? packageMetaIt.ToArray() : [];
                 foreach (IPackageSearchMetadata? packageMeta in packageMetas)
                 {
@@ -375,7 +375,7 @@ private async Task BuildInternal()
                             }
                             else if (!deps.VersionRange.IsSubSetOrEqualTo(packageEntryDep.Version))
                             {
-                                IEnumerable<IPackageSearchMetadata>? dependencyPackageMetaIt = await GetMetadataFromSources(deps.Id);
+                                IEnumerable<IPackageSearchMetadata>? dependencyPackageMetaIt = await GetMetadataFromSources(deps.Id, packageEntryDep.IncludePrerelease);
                                 IPackageSearchMetadata[] dependencyPackageMetas = dependencyPackageMetaIt != null ? dependencyPackageMetaIt.ToArray() : [];
 
                                 PackageDependency? packageDependency = null;
@@ -468,14 +468,38 @@ private async Task BuildInternal()
             }
         }
 
-        private static string GetNpmVersion(NuGetVersion currentVersion)
+        // Unity only supports the SemVer format: https://docs.unity3d.com/6000.1/Documentation/Manual/upm-lifecycle.html
+        internal static string GetNpmVersion(NuGetVersion currentVersion)
         {
             string npmCurrentVersion = $"{currentVersion.Major}.{currentVersion.Minor}.{currentVersion.Patch}";
 
-            if (currentVersion.Revision != 0)
+            if (currentVersion.IsPrerelease || currentVersion.Revision != 0)
             {
-                npmCurrentVersion += $"-{currentVersion.Revision}";
+                StringBuilder stringBuilder = new();
+
+                if (currentVersion.Revision != 0)
+                {
+                    stringBuilder.Append(currentVersion.Revision);
+                }
+
+                if (currentVersion.IsPrerelease)
+                {
+                    if (stringBuilder.Length > 0)
+                    {
+                        stringBuilder.Append('.');
+                    }
+
+                    stringBuilder.Append(currentVersion.Release);
+                }
+
+                if (stringBuilder.Length > 0)
+                {
+                    stringBuilder.Insert(0, '-');
+                }
+
+                npmCurrentVersion += stringBuilder.ToString();
             }
+
             return npmCurrentVersion;
         }
 

src/UnityNuGet/RegistryEntry.cs

@@ -23,5 +23,8 @@ public class RegistryEntry
 
         [JsonPropertyName("analyzer")]
         public bool Analyzer { get; set; }
+
+        [JsonPropertyName("includePrerelease")]
+        public bool IncludePrerelease { get; set; }
     }
 }