Disable most BinaryFormatter tests in wasm

src/libraries/Common/tests/System/Collections/IEnumerable.Generic.Serialization.Tests.cs

@@ -12,6 +12,7 @@ public abstract partial class IEnumerable_Generic_Tests<T> : TestBase<T>
     {
         [Theory]
         [MemberData(nameof(ValidCollectionSizes))]
+        [PlatformSpecific(~TestPlatforms.Browser)] // BinaryFormatter not supported in browser
         public void IGenericSharedAPI_SerializeDeserialize(int count)
         {
             IEnumerable<T> expected = GenericIEnumerableFactory(count);

src/libraries/Common/tests/System/Collections/IEnumerable.NonGeneric.Serialization.Tests.cs

@@ -14,6 +14,7 @@ public abstract partial class IEnumerable_NonGeneric_Tests : TestBase
     {
         [Theory]
         [MemberData(nameof(ValidCollectionSizes))]
+        [PlatformSpecific(~TestPlatforms.Browser)] // BinaryFormatter not supported in browser
         public void IGenericSharedAPI_SerializeDeserialize(int count)
         {
             IEnumerable expected = NonGenericIEnumerableFactory(count);

src/libraries/System.Collections/tests/Generic/Comparers/EqualityComparer.Generic.Serialization.Tests.cs

@@ -13,6 +13,7 @@ namespace System.Collections.Generic.Tests
     public abstract partial class ComparersGenericTests<T>
     {
         [Fact]
+        [PlatformSpecific(~TestPlatforms.Browser)] // BinaryFormatter not supported in browser
         public void EqualityComparer_SerializationRoundtrip()
         {
             var bf = new BinaryFormatter();

src/libraries/System.Collections/tests/Generic/Dictionary/Dictionary.Tests.cs

@@ -401,6 +401,7 @@ private static IDictionary<T, T> CreateDictionary<T>(int size, Func<int, T> keyV
         }
 
         [Fact]
+        [PlatformSpecific(~TestPlatforms.Browser)] // BinaryFormatter not supported in browser
         public void ComparerSerialization()
         {
             // Strings switch between randomized and non-randomized comparers,

src/libraries/System.Collections/tests/Generic/HashSet/HashSet.Generic.Tests.cs

@@ -660,6 +660,7 @@ public void Remove_NonDefaultComparer_ComparerUsed(int capacity)
         #region Serialization
 
         [Fact]
+        [PlatformSpecific(~TestPlatforms.Browser)] // BinaryFormatter not supported in browser
         public void ComparerSerialization()
         {
             // Strings switch between randomized and non-randomized comparers,

src/libraries/System.Runtime.Serialization.Formatters/tests/BinaryFormatterTests.cs

@@ -19,6 +19,7 @@
 
 namespace System.Runtime.Serialization.Formatters.Tests
 {
+    [PlatformSpecific(~TestPlatforms.Browser)] // BinaryFormatter not supported in browser
     public partial class BinaryFormatterTests : FileCleanupTestBase
     {
         // On 32-bit we can't test these high inputs as they cause OutOfMemoryExceptions.

src/libraries/System.Runtime.Serialization.Formatters/tests/SerializationBinderTests.cs

@@ -23,6 +23,7 @@ public void BindToName_NullDefaults()
         }
 
         [Fact]
+        [PlatformSpecific(~TestPlatforms.Browser)] // BinaryFormatter not supported in browser
         public void BindToType_AllValuesTracked()
         {
             var s = new MemoryStream();

src/libraries/System.Runtime.Serialization.Formatters/tests/SerializationGuardTests.cs

@@ -13,6 +13,7 @@
 
 namespace System.Runtime.Serialization.Formatters.Tests
 {
+    [PlatformSpecific(~TestPlatforms.Browser)] // BinaryFormatter not supported in browser
     public static class SerializationGuardTests
     {
         [Fact]