diff --git a/src/mono/wasm/Wasm.Build.Tests/GenerateWasmBootJsonTests.cs b/src/mono/wasm/Wasm.Build.Tests/GenerateWasmBootJsonTests.cs
new file mode 100644
index 00000000000000..18d2023a75f41f
--- /dev/null
+++ b/src/mono/wasm/Wasm.Build.Tests/GenerateWasmBootJsonTests.cs
@@ -0,0 +1,218 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Reflection;
+using System.Text.Json;
+using Microsoft.NET.Sdk.WebAssembly;
+using Xunit;
+
+#nullable enable
+
+namespace Wasm.Build.Tests;
+
+    [TestCategory("no-workload")]
+    public class GenerateWasmBootJsonTests
+    {
+        [Fact]
+        public void ReadRuntimeConfigFiles_NullMainConfigPath_ReturnsNull()
+        {
+            RuntimeConfigData? result = InvokeReadRuntimeConfigFiles(null, null);
+
+            Assert.Null(result);
+        }
+
+        [Fact]
+        public void ReadRuntimeConfigFiles_MainConfigNotExists_ReturnsNull()
+        {
+            using var dir = new TempDirectory();
+            string nonExistentPath = Path.Combine(dir.Path, "does-not-exist.runtimeconfig.json");
+            RuntimeConfigData? result = InvokeReadRuntimeConfigFiles(nonExistentPath, null);
+
+            Assert.Null(result);
+        }
+
+        [Fact]
+        public void ReadRuntimeConfigFiles_DevConfigPreservesBooleanAndNumericTypes()
+        {
+            using var dir = new TempDirectory();
+            string mainConfig = WriteRuntimeConfig(dir.Path, "App.runtimeconfig.json",
+                configProperties: new() { ["key1"] = "value1" });
+            string devConfigPath = Path.Combine(dir.Path, "App.runtimeconfig.dev.json");
+            File.WriteAllText(devConfigPath, """
+                {
+                  "runtimeOptions": {
+                    "configProperties": {
+                      "System.HotReload.Enable": true,
+                      "System.HotReload.MaxRetries": 10
+                    }
+                  }
+                }
+                """);
+
+            RuntimeConfigData? result = InvokeReadRuntimeConfigFiles(mainConfig, devConfigPath);
+
+            Assert.NotNull(result?.runtimeOptions?.configProperties);
+            Dictionary<string, object> props = result!.runtimeOptions!.configProperties!;
+            Assert.Equal(JsonValueKind.True, ((JsonElement)props["System.HotReload.Enable"]).ValueKind);
+            Assert.Equal(JsonValueKind.Number, ((JsonElement)props["System.HotReload.MaxRetries"]).ValueKind);
+            Assert.Equal(10, ((JsonElement)props["System.HotReload.MaxRetries"]).GetInt32());
+        }
+
+        [Fact]
+        public void ReadRuntimeConfigFiles_MainConfigOnly_ReturnsMainProperties()
+        {
+            using var dir = new TempDirectory();
+            string mainConfig = WriteRuntimeConfig(dir.Path, "App.runtimeconfig.json",
+                configProperties: new() { ["key1"] = "value1", ["key2"] = "42" });
+
+            RuntimeConfigData? result = InvokeReadRuntimeConfigFiles(mainConfig, null);
+
+            Assert.NotNull(result);
+            Assert.NotNull(result.runtimeOptions?.configProperties);
+            Assert.Equal("value1", result.runtimeOptions!.configProperties!["key1"].ToString());
+            Assert.Equal("42", result.runtimeOptions.configProperties["key2"].ToString());
+        }
+
+        [Fact]
+        public void ReadRuntimeConfigFiles_DevConfigNotExists_ReturnsMainPropertiesUnchanged()
+        {
+            using var dir = new TempDirectory();
+            string mainConfig = WriteRuntimeConfig(dir.Path, "App.runtimeconfig.json",
+                configProperties: new() { ["key1"] = "value1" });
+            string devConfigPath = Path.Combine(dir.Path, "App.runtimeconfig.dev.json");
+
+            RuntimeConfigData? result = InvokeReadRuntimeConfigFiles(mainConfig, devConfigPath);
+
+            Assert.NotNull(result);
+            Assert.Equal("value1", result.runtimeOptions?.configProperties?["key1"].ToString());
+        }
+
+        [Fact]
+        public void ReadRuntimeConfigFiles_DevConfigAddsNewProperty()
+        {
+            using var dir = new TempDirectory();
+            string mainConfig = WriteRuntimeConfig(dir.Path, "App.runtimeconfig.json",
+                configProperties: new() { ["key1"] = "value1" });
+            string devConfig = WriteRuntimeConfig(dir.Path, "App.runtimeconfig.dev.json",
+                configProperties: new() { ["key2"] = "value2" });
+
+            RuntimeConfigData? result = InvokeReadRuntimeConfigFiles(mainConfig, devConfig);
+
+            Assert.NotNull(result?.runtimeOptions?.configProperties);
+            Assert.Equal("value1", result!.runtimeOptions!.configProperties!["key1"].ToString());
+            Assert.Equal("value2", result.runtimeOptions.configProperties["key2"].ToString());
+        }
+
+        [Fact]
+        public void ReadRuntimeConfigFiles_DevConfigOverridesMainProperty()
+        {
+            using var dir = new TempDirectory();
+            string mainConfig = WriteRuntimeConfig(dir.Path, "App.runtimeconfig.json",
+                configProperties: new() { ["System.Runtime.Feature"] = "false" });
+            string devConfig = WriteRuntimeConfig(dir.Path, "App.runtimeconfig.dev.json",
+                configProperties: new() { ["System.Runtime.Feature"] = "true" });
+
+            RuntimeConfigData? result = InvokeReadRuntimeConfigFiles(mainConfig, devConfig);
+
+            Assert.NotNull(result?.runtimeOptions?.configProperties);
+            Assert.Equal("true", result!.runtimeOptions!.configProperties!["System.Runtime.Feature"].ToString());
+        }
+
+        [Fact]
+        public void ReadRuntimeConfigFiles_DevConfigMergesWhenMainHasNoConfigProperties()
+        {
+            using var dir = new TempDirectory();
+            string mainConfig = WriteRuntimeConfig(dir.Path, "App.runtimeconfig.json",
+                configProperties: null);
+            string devConfig = WriteRuntimeConfig(dir.Path, "App.runtimeconfig.dev.json",
+                configProperties: new() { ["System.HotReload.Enable"] = "true" });
+
+            RuntimeConfigData? result = InvokeReadRuntimeConfigFiles(mainConfig, devConfig);
+
+            Assert.NotNull(result?.runtimeOptions?.configProperties);
+            Assert.Equal("true", result!.runtimeOptions!.configProperties!["System.HotReload.Enable"].ToString());
+        }
+
+        [Fact]
+        public void ReadRuntimeConfigFiles_DevConfigEmptyProperties_DoesNotAlterResult()
+        {
+            using var dir = new TempDirectory();
+            string mainConfig = WriteRuntimeConfig(dir.Path, "App.runtimeconfig.json",
+                configProperties: new() { ["key1"] = "value1" });
+            string devConfig = WriteRuntimeConfig(dir.Path, "App.runtimeconfig.dev.json",
+                configProperties: new());
+
+            RuntimeConfigData? result = InvokeReadRuntimeConfigFiles(mainConfig, devConfig);
+
+            Assert.NotNull(result?.runtimeOptions?.configProperties);
+            Assert.Single(result!.runtimeOptions!.configProperties!);
+            Assert.Equal("value1", result.runtimeOptions.configProperties["key1"].ToString());
+        }
+
+        private static string WriteRuntimeConfig(string dir, string fileName, Dictionary<string, string>? configProperties)
+        {
+            string path = Path.Combine(dir, fileName);
+            using var stream = File.OpenWrite(path);
+            using var writer = new Utf8JsonWriter(stream, new JsonWriterOptions { Indented = true });
+            writer.WriteStartObject();
+            writer.WritePropertyName("runtimeOptions");
+            writer.WriteStartObject();
+            if (configProperties is not null)
+            {
+                writer.WritePropertyName("configProperties");
+                writer.WriteStartObject();
+                foreach ((string key, string value) in configProperties)
+                {
+                    writer.WriteString(key, value);
+                }
+                writer.WriteEndObject();
+            }
+            writer.WriteEndObject();
+            writer.WriteEndObject();
+            return path;
+        }
+
+        private static RuntimeConfigData? InvokeReadRuntimeConfigFiles(string? mainConfigPath, string? devConfigPath)
+        {
+            MethodInfo? method = typeof(GenerateWasmBootJson).GetMethod(
+                "ReadRuntimeConfigFiles",
+                BindingFlags.Static | BindingFlags.NonPublic);
+
+            if (method is null)
+            {
+                throw new InvalidOperationException(
+                    $"{nameof(GenerateWasmBootJson)}.{nameof(InvokeReadRuntimeConfigFiles)} could not find private method " +
+                    "'ReadRuntimeConfigFiles(string?, string?)'. The production method signature may have changed.");
+            }
+
+            object? result = method.Invoke(null, new object?[] { mainConfigPath, devConfigPath });
+            return (RuntimeConfigData?)result;
+        }
+
+        private sealed class TempDirectory : IDisposable
+        {
+            public string Path { get; } = System.IO.Path.Combine(System.IO.Path.GetTempPath(), System.IO.Path.GetRandomFileName());
+
+            public TempDirectory() => Directory.CreateDirectory(Path);
+
+            public void Dispose()
+            {
+                try
+                {
+                    Directory.Delete(Path, recursive: true);
+                }
+                catch (DirectoryNotFoundException)
+                {
+                }
+                catch (IOException)
+                {
+                }
+                catch (UnauthorizedAccessException)
+                {
+                }
+            }
+        }
+}
diff --git a/src/tasks.tests/Microsoft.NET.Sdk.WebAssembly.Pack.Tasks.Tests/GenerateWasmBootJsonTests.cs b/src/tasks.tests/Microsoft.NET.Sdk.WebAssembly.Pack.Tasks.Tests/GenerateWasmBootJsonTests.cs
deleted file mode 100644
index 5c52092227b342..00000000000000
--- a/src/tasks.tests/Microsoft.NET.Sdk.WebAssembly.Pack.Tasks.Tests/GenerateWasmBootJsonTests.cs
+++ /dev/null
@@ -1,183 +0,0 @@
-// Licensed to the .NET Foundation under one or more agreements.
-// The .NET Foundation licenses this file to you under the MIT license.
-
-using System.Collections.Generic;
-using System.IO;
-using System.Text.Json;
-using Xunit;
-
-namespace Microsoft.NET.Sdk.WebAssembly.Tests;
-
-public class GenerateWasmBootJsonTests
-{
-    [Fact]
-    public void ReadRuntimeConfigFiles_NullMainConfigPath_ReturnsNull()
-    {
-        var result = GenerateWasmBootJson.ReadRuntimeConfigFiles(null, null);
-
-        Assert.Null(result);
-    }
-
-    [Fact]
-    public void ReadRuntimeConfigFiles_MainConfigNotExists_ReturnsNull()
-    {
-        using var dir = new TempDirectory();
-        var nonExistentPath = Path.Combine(dir.Path, "does-not-exist.runtimeconfig.json");
-        var result = GenerateWasmBootJson.ReadRuntimeConfigFiles(nonExistentPath, null);
-
-        Assert.Null(result);
-    }
-
-    [Fact]
-    public void ReadRuntimeConfigFiles_DevConfigPreservesBooleanAndNumericTypes()
-    {
-        using var dir = new TempDirectory();
-        var mainConfig = WriteRuntimeConfig(dir.Path, "App.runtimeconfig.json",
-            configProperties: new() { ["key1"] = "value1" });
-        // Write dev config with native JSON boolean and number (not string) values.
-        var devConfigPath = Path.Combine(dir.Path, "App.runtimeconfig.dev.json");
-        File.WriteAllText(devConfigPath, """
-            {
-              "runtimeOptions": {
-                "configProperties": {
-                  "System.HotReload.Enable": true,
-                  "System.HotReload.MaxRetries": 10
-                }
-              }
-            }
-            """);
-
-        var result = GenerateWasmBootJson.ReadRuntimeConfigFiles(mainConfig, devConfigPath);
-
-        Assert.NotNull(result?.runtimeOptions?.configProperties);
-        var props = result!.runtimeOptions!.configProperties!;
-        Assert.Equal(JsonValueKind.True, ((JsonElement)props["System.HotReload.Enable"]).ValueKind);
-        Assert.Equal(JsonValueKind.Number, ((JsonElement)props["System.HotReload.MaxRetries"]).ValueKind);
-        Assert.Equal(10, ((JsonElement)props["System.HotReload.MaxRetries"]).GetInt32());
-    }
-
-    [Fact]
-    public void ReadRuntimeConfigFiles_MainConfigOnly_ReturnsMainProperties()
-    {
-        using var dir = new TempDirectory();
-        var mainConfig = WriteRuntimeConfig(dir.Path, "App.runtimeconfig.json",
-            configProperties: new() { ["key1"] = "value1", ["key2"] = "42" });
-
-        var result = GenerateWasmBootJson.ReadRuntimeConfigFiles(mainConfig, null);
-
-        Assert.NotNull(result);
-        Assert.NotNull(result.runtimeOptions?.configProperties);
-        Assert.Equal("value1", result.runtimeOptions!.configProperties!["key1"].ToString());
-        Assert.Equal("42", result.runtimeOptions.configProperties["key2"].ToString());
-    }
-
-    [Fact]
-    public void ReadRuntimeConfigFiles_DevConfigNotExists_ReturnsMainPropertiesUnchanged()
-    {
-        using var dir = new TempDirectory();
-        var mainConfig = WriteRuntimeConfig(dir.Path, "App.runtimeconfig.json",
-            configProperties: new() { ["key1"] = "value1" });
-        var devConfigPath = Path.Combine(dir.Path, "App.runtimeconfig.dev.json");
-
-        var result = GenerateWasmBootJson.ReadRuntimeConfigFiles(mainConfig, devConfigPath);
-
-        Assert.NotNull(result);
-        Assert.Equal("value1", result.runtimeOptions?.configProperties?["key1"].ToString());
-    }
-
-    [Fact]
-    public void ReadRuntimeConfigFiles_DevConfigAddsNewProperty()
-    {
-        using var dir = new TempDirectory();
-        var mainConfig = WriteRuntimeConfig(dir.Path, "App.runtimeconfig.json",
-            configProperties: new() { ["key1"] = "value1" });
-        var devConfig = WriteRuntimeConfig(dir.Path, "App.runtimeconfig.dev.json",
-            configProperties: new() { ["key2"] = "value2" });
-
-        var result = GenerateWasmBootJson.ReadRuntimeConfigFiles(mainConfig, devConfig);
-
-        Assert.NotNull(result?.runtimeOptions?.configProperties);
-        Assert.Equal("value1", result!.runtimeOptions!.configProperties!["key1"].ToString());
-        Assert.Equal("value2", result.runtimeOptions.configProperties["key2"].ToString());
-    }
-
-    [Fact]
-    public void ReadRuntimeConfigFiles_DevConfigOverridesMainProperty()
-    {
-        using var dir = new TempDirectory();
-        var mainConfig = WriteRuntimeConfig(dir.Path, "App.runtimeconfig.json",
-            configProperties: new() { ["System.Runtime.Feature"] = "false" });
-        var devConfig = WriteRuntimeConfig(dir.Path, "App.runtimeconfig.dev.json",
-            configProperties: new() { ["System.Runtime.Feature"] = "true" });
-
-        var result = GenerateWasmBootJson.ReadRuntimeConfigFiles(mainConfig, devConfig);
-
-        Assert.NotNull(result?.runtimeOptions?.configProperties);
-        Assert.Equal("true", result!.runtimeOptions!.configProperties!["System.Runtime.Feature"].ToString());
-    }
-
-    [Fact]
-    public void ReadRuntimeConfigFiles_DevConfigMergesWhenMainHasNoConfigProperties()
-    {
-        using var dir = new TempDirectory();
-        var mainConfig = WriteRuntimeConfig(dir.Path, "App.runtimeconfig.json",
-            configProperties: null);
-        var devConfig = WriteRuntimeConfig(dir.Path, "App.runtimeconfig.dev.json",
-            configProperties: new() { ["System.HotReload.Enable"] = "true" });
-
-        var result = GenerateWasmBootJson.ReadRuntimeConfigFiles(mainConfig, devConfig);
-
-        Assert.NotNull(result?.runtimeOptions?.configProperties);
-        Assert.Equal("true", result!.runtimeOptions!.configProperties!["System.HotReload.Enable"].ToString());
-    }
-
-    [Fact]
-    public void ReadRuntimeConfigFiles_DevConfigEmptyProperties_DoesNotAlterResult()
-    {
-        using var dir = new TempDirectory();
-        var mainConfig = WriteRuntimeConfig(dir.Path, "App.runtimeconfig.json",
-            configProperties: new() { ["key1"] = "value1" });
-        var devConfig = WriteRuntimeConfig(dir.Path, "App.runtimeconfig.dev.json",
-            configProperties: new());
-
-        var result = GenerateWasmBootJson.ReadRuntimeConfigFiles(mainConfig, devConfig);
-
-        Assert.NotNull(result?.runtimeOptions?.configProperties);
-        Assert.Single(result!.runtimeOptions!.configProperties!);
-        Assert.Equal("value1", result.runtimeOptions.configProperties["key1"].ToString());
-    }
-
-    private static string WriteRuntimeConfig(string dir, string fileName, Dictionary<string, string>? configProperties)
-    {
-        var path = Path.Combine(dir, fileName);
-        using var stream = File.OpenWrite(path);
-        using var writer = new Utf8JsonWriter(stream, new JsonWriterOptions { Indented = true });
-        writer.WriteStartObject();
-        writer.WritePropertyName("runtimeOptions");
-        writer.WriteStartObject();
-        if (configProperties is not null)
-        {
-            writer.WritePropertyName("configProperties");
-            writer.WriteStartObject();
-            foreach (var (key, value) in configProperties)
-                writer.WriteString(key, value);
-            writer.WriteEndObject();
-        }
-        writer.WriteEndObject();
-        writer.WriteEndObject();
-        return path;
-    }
-
-    private sealed class TempDirectory : System.IDisposable
-    {
-        public string Path { get; } = System.IO.Path.Combine(System.IO.Path.GetTempPath(), System.IO.Path.GetRandomFileName());
-
-        public TempDirectory() => Directory.CreateDirectory(Path);
-
-        public void Dispose()
-        {
-            // Silently ignore cleanup failures to avoid masking actual test failures.
-            try { Directory.Delete(Path, recursive: true); } catch { }
-        }
-    }
-}
diff --git a/src/tasks.tests/Microsoft.NET.Sdk.WebAssembly.Pack.Tasks.Tests/Microsoft.NET.Sdk.WebAssembly.Pack.Tasks.Tests.csproj b/src/tasks.tests/Microsoft.NET.Sdk.WebAssembly.Pack.Tasks.Tests/Microsoft.NET.Sdk.WebAssembly.Pack.Tasks.Tests.csproj
deleted file mode 100644
index 9adcea8712095e..00000000000000
--- a/src/tasks.tests/Microsoft.NET.Sdk.WebAssembly.Pack.Tasks.Tests/Microsoft.NET.Sdk.WebAssembly.Pack.Tasks.Tests.csproj
+++ /dev/null
@@ -1,14 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <PropertyGroup>
-    <TargetFramework>$(NetCoreAppToolCurrent)</TargetFramework>
-    <Nullable>enable</Nullable>
-  </PropertyGroup>
-
-  <ItemGroup>
-    <PackageReference Include="Microsoft.Build.Framework" Version="$(MicrosoftBuildFrameworkVersion)" />
-    <PackageReference Include="Microsoft.Build.Utilities.Core" Version="$(MicrosoftBuildUtilitiesCoreVersion)" />
-    <ProjectReference Include="..\..\tasks\Microsoft.NET.Sdk.WebAssembly.Pack.Tasks\Microsoft.NET.Sdk.WebAssembly.Pack.Tasks.csproj" />
-  </ItemGroup>
-
-</Project>
diff --git a/src/tasks/Microsoft.NET.Sdk.WebAssembly.Pack.Tasks/Microsoft.NET.Sdk.WebAssembly.Pack.Tasks.csproj b/src/tasks/Microsoft.NET.Sdk.WebAssembly.Pack.Tasks/Microsoft.NET.Sdk.WebAssembly.Pack.Tasks.csproj
index ecf3510c8914df..90267a01c8e52a 100644
--- a/src/tasks/Microsoft.NET.Sdk.WebAssembly.Pack.Tasks/Microsoft.NET.Sdk.WebAssembly.Pack.Tasks.csproj
+++ b/src/tasks/Microsoft.NET.Sdk.WebAssembly.Pack.Tasks/Microsoft.NET.Sdk.WebAssembly.Pack.Tasks.csproj
@@ -17,7 +17,6 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <InternalsVisibleTo Include="Microsoft.NET.Sdk.WebAssembly.Pack.Tasks.Tests" />
     <Compile Include="..\Common\Utils.cs" />
     <Compile Include="..\WasmAppBuilder\WebcilConverter.cs" />
     <Compile Include="..\WasmAppBuilder\LogAdapter.cs" />