From: Steve Harter <steveharter@users.noreply.github.com>
Date: Thu, 25 Jul 2019 20:24:44 +0000 (-0500)
Subject: Reduce memory usage of tests and fix asserts for escaped size (dotnet/corefx#39751)
X-Git-Tag: submit/tizen/20210909.063632~11031^2~840
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3cfddb1f5406e06e22e075526c343f7706b33ea7;p=platform%2Fupstream%2Fdotnet%2Fruntime.git

Reduce memory usage of tests and fix asserts for escaped size (dotnet/corefx#39751)



Commit migrated from https://github.com/dotnet/corefx/commit/3e36efc9a3c3f22b87c5f33a25c0ad5dbfeb9396
---

diff --git a/src/libraries/System.Memory/tests/ArrayBufferWriter/ArrayBufferWriterTests.T.cs b/src/libraries/System.Memory/tests/ArrayBufferWriter/ArrayBufferWriterTests.T.cs
index 85d345f..1fb5c62 100644
--- a/src/libraries/System.Memory/tests/ArrayBufferWriter/ArrayBufferWriterTests.T.cs
+++ b/src/libraries/System.Memory/tests/ArrayBufferWriter/ArrayBufferWriterTests.T.cs
@@ -231,6 +231,11 @@ namespace System.Buffers.Tests
 
         public static bool IsX64 { get; } = IntPtr.Size == 8;
 
+        // NOTE: InvalidAdvance_Large test is constrained to run on Windows and MacOSX because it causes
+        //       problems on Linux due to the way deferred memory allocation works. On Linux, the allocation can
+        //       succeed even if there is not enough memory but then the test may get killed by the OOM killer at the
+        //       time the memory is accessed which triggers the full memory allocation.
+        [PlatformSpecific(TestPlatforms.Windows | TestPlatforms.OSX)]
         [ConditionalFact(nameof(IsX64))]
         [OuterLoop]
         public void InvalidAdvance_Large()
diff --git a/src/libraries/System.Text.Json/src/System/Text/Json/JsonConstants.cs b/src/libraries/System.Text.Json/src/System/Text/Json/JsonConstants.cs
index d295393..b6a019c 100644
--- a/src/libraries/System.Text.Json/src/System/Text/Json/JsonConstants.cs
+++ b/src/libraries/System.Text.Json/src/System/Text/Json/JsonConstants.cs
@@ -61,9 +61,10 @@ namespace System.Text.Json
         // All other UTF-16 characters can be represented by either 1 or 2 UTF-8 bytes.
         public const int MaxExpansionFactorWhileTranscoding = 3;
 
-        public const int MaxTokenSize = 1_000_000_000 / MaxExpansionFactorWhileEscaping;  // 166_666_666 bytes
-        public const int MaxBase46ValueTokenSize = (1_000_000_000 >> 2 * 3) / MaxExpansionFactorWhileEscaping;  // 125_000_000 bytes
-        public const int MaxCharacterTokenSize = 1_000_000_000 / MaxExpansionFactorWhileEscaping; // 166_666_666 characters
+        public const int MaxEscapedTokenSize = 1_000_000_000;   // Max size for already escaped value.
+        public const int MaxUnescapedTokenSize = MaxEscapedTokenSize / MaxExpansionFactorWhileEscaping;  // 166_666_666 bytes
+        public const int MaxBase46ValueTokenSize = (MaxEscapedTokenSize >> 2 * 3) / MaxExpansionFactorWhileEscaping;  // 125_000_000 bytes
+        public const int MaxCharacterTokenSize = MaxEscapedTokenSize / MaxExpansionFactorWhileEscaping; // 166_666_666 characters
 
         public const int MaximumFormatInt64Length = 20;   // 19 + sign (i.e. -9223372036854775808)
         public const int MaximumFormatUInt64Length = 20;  // i.e. 18446744073709551615
diff --git a/src/libraries/System.Text.Json/src/System/Text/Json/ThrowHelper.cs b/src/libraries/System.Text.Json/src/System/Text/Json/ThrowHelper.cs
index 74f3746..267cad6 100644
--- a/src/libraries/System.Text.Json/src/System/Text/Json/ThrowHelper.cs
+++ b/src/libraries/System.Text.Json/src/System/Text/Json/ThrowHelper.cs
@@ -66,20 +66,20 @@ namespace System.Text.Json
 
         public static void ThrowArgumentException(ReadOnlySpan<byte> propertyName, ReadOnlySpan<byte> value)
         {
-            if (propertyName.Length > JsonConstants.MaxTokenSize)
+            if (propertyName.Length > JsonConstants.MaxUnescapedTokenSize)
             {
                 ThrowArgumentException(SR.Format(SR.PropertyNameTooLarge, propertyName.Length));
             }
             else
             {
-                Debug.Assert(value.Length > JsonConstants.MaxTokenSize);
+                Debug.Assert(value.Length > JsonConstants.MaxUnescapedTokenSize);
                 ThrowArgumentException(SR.Format(SR.ValueTooLarge, value.Length));
             }
         }
 
         public static void ThrowArgumentException(ReadOnlySpan<byte> propertyName, ReadOnlySpan<char> value)
         {
-            if (propertyName.Length > JsonConstants.MaxTokenSize)
+            if (propertyName.Length > JsonConstants.MaxUnescapedTokenSize)
             {
                 ThrowArgumentException(SR.Format(SR.PropertyNameTooLarge, propertyName.Length));
             }
@@ -98,7 +98,7 @@ namespace System.Text.Json
             }
             else
             {
-                Debug.Assert(value.Length > JsonConstants.MaxTokenSize);
+                Debug.Assert(value.Length > JsonConstants.MaxUnescapedTokenSize);
                 ThrowArgumentException(SR.Format(SR.ValueTooLarge, value.Length));
             }
         }
diff --git a/src/libraries/System.Text.Json/src/System/Text/Json/Writer/JsonWriterHelper.cs b/src/libraries/System.Text.Json/src/System/Text/Json/Writer/JsonWriterHelper.cs
index 41f844a..316175c 100644
--- a/src/libraries/System.Text.Json/src/System/Text/Json/Writer/JsonWriterHelper.cs
+++ b/src/libraries/System.Text.Json/src/System/Text/Json/Writer/JsonWriterHelper.cs
@@ -34,14 +34,14 @@ namespace System.Text.Json
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public static void ValidateProperty(ReadOnlySpan<byte> propertyName)
         {
-            if (propertyName.Length > JsonConstants.MaxTokenSize)
+            if (propertyName.Length > JsonConstants.MaxUnescapedTokenSize)
                 ThrowHelper.ThrowArgumentException_PropertyNameTooLarge(propertyName.Length);
         }
 
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public static void ValidateValue(ReadOnlySpan<byte> value)
         {
-            if (value.Length > JsonConstants.MaxTokenSize)
+            if (value.Length > JsonConstants.MaxUnescapedTokenSize)
                 ThrowHelper.ThrowArgumentException_ValueTooLarge(value.Length);
         }
 
@@ -95,21 +95,21 @@ namespace System.Text.Json
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public static void ValidatePropertyAndValue(ReadOnlySpan<char> propertyName, ReadOnlySpan<byte> value)
         {
-            if (propertyName.Length > JsonConstants.MaxCharacterTokenSize || value.Length > JsonConstants.MaxTokenSize)
+            if (propertyName.Length > JsonConstants.MaxCharacterTokenSize || value.Length > JsonConstants.MaxUnescapedTokenSize)
                 ThrowHelper.ThrowArgumentException(propertyName, value);
         }
 
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public static void ValidatePropertyAndValue(ReadOnlySpan<byte> propertyName, ReadOnlySpan<char> value)
         {
-            if (propertyName.Length > JsonConstants.MaxTokenSize || value.Length > JsonConstants.MaxCharacterTokenSize)
+            if (propertyName.Length > JsonConstants.MaxUnescapedTokenSize || value.Length > JsonConstants.MaxCharacterTokenSize)
                 ThrowHelper.ThrowArgumentException(propertyName, value);
         }
 
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public static void ValidatePropertyAndValue(ReadOnlySpan<byte> propertyName, ReadOnlySpan<byte> value)
         {
-            if (propertyName.Length > JsonConstants.MaxTokenSize || value.Length > JsonConstants.MaxTokenSize)
+            if (propertyName.Length > JsonConstants.MaxUnescapedTokenSize || value.Length > JsonConstants.MaxUnescapedTokenSize)
                 ThrowHelper.ThrowArgumentException(propertyName, value);
         }
 
@@ -130,7 +130,7 @@ namespace System.Text.Json
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public static void ValidatePropertyAndBytes(ReadOnlySpan<byte> propertyName, ReadOnlySpan<byte> bytes)
         {
-            if (propertyName.Length > JsonConstants.MaxTokenSize || bytes.Length > JsonConstants.MaxBase46ValueTokenSize)
+            if (propertyName.Length > JsonConstants.MaxUnescapedTokenSize || bytes.Length > JsonConstants.MaxBase46ValueTokenSize)
                 ThrowHelper.ThrowArgumentException(propertyName, bytes);
         }
 
diff --git a/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.Bytes.cs b/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.Bytes.cs
index d55076b..a54daea 100644
--- a/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.Bytes.cs
+++ b/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.Bytes.cs
@@ -23,7 +23,7 @@ namespace System.Text.Json
 
         private void WriteBase64StringHelper(ReadOnlySpan<byte> utf8PropertyName, ReadOnlySpan<byte> bytes)
         {
-            Debug.Assert(utf8PropertyName.Length <= JsonConstants.MaxTokenSize);
+            Debug.Assert(utf8PropertyName.Length <= JsonConstants.MaxUnescapedTokenSize);
 
             JsonWriterHelper.ValidateBytes(bytes);
 
diff --git a/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.DateTime.cs b/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.DateTime.cs
index 9e3db00..06c95a2 100644
--- a/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.DateTime.cs
+++ b/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.DateTime.cs
@@ -27,7 +27,7 @@ namespace System.Text.Json
 
         private void WriteStringHelper(ReadOnlySpan<byte> utf8PropertyName, DateTime value)
         {
-            Debug.Assert(utf8PropertyName.Length <= JsonConstants.MaxTokenSize);
+            Debug.Assert(utf8PropertyName.Length <= JsonConstants.MaxUnescapedTokenSize);
 
             WriteStringByOptions(utf8PropertyName, value);
 
diff --git a/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.DateTimeOffset.cs b/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.DateTimeOffset.cs
index 7893df6..2894a69 100644
--- a/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.DateTimeOffset.cs
+++ b/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.DateTimeOffset.cs
@@ -26,7 +26,7 @@ namespace System.Text.Json
 
         private void WriteStringHelper(ReadOnlySpan<byte> utf8PropertyName, DateTimeOffset value)
         {
-            Debug.Assert(utf8PropertyName.Length <= JsonConstants.MaxTokenSize);
+            Debug.Assert(utf8PropertyName.Length <= JsonConstants.MaxUnescapedTokenSize);
 
             WriteStringByOptions(utf8PropertyName, value);
 
diff --git a/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.Decimal.cs b/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.Decimal.cs
index 8149596..d15cf69 100644
--- a/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.Decimal.cs
+++ b/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.Decimal.cs
@@ -26,7 +26,7 @@ namespace System.Text.Json
 
         private void WriteNumberHelper(ReadOnlySpan<byte> utf8PropertyName, decimal value)
         {
-            Debug.Assert(utf8PropertyName.Length <= JsonConstants.MaxTokenSize);
+            Debug.Assert(utf8PropertyName.Length <= JsonConstants.MaxUnescapedTokenSize);
 
             WriteNumberByOptions(utf8PropertyName, value);
 
diff --git a/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.Double.cs b/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.Double.cs
index 2066a49..07f17fc 100644
--- a/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.Double.cs
+++ b/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.Double.cs
@@ -26,7 +26,7 @@ namespace System.Text.Json
 
         private void WriteNumberHelper(ReadOnlySpan<byte> utf8PropertyName, double value)
         {
-            Debug.Assert(utf8PropertyName.Length <= JsonConstants.MaxTokenSize);
+            Debug.Assert(utf8PropertyName.Length <= JsonConstants.MaxUnescapedTokenSize);
 
             JsonWriterHelper.ValidateDouble(value);
 
diff --git a/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.Float.cs b/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.Float.cs
index 899fd9c..4882393 100644
--- a/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.Float.cs
+++ b/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.Float.cs
@@ -26,7 +26,7 @@ namespace System.Text.Json
 
         private void WriteNumberHelper(ReadOnlySpan<byte> utf8PropertyName, float value)
         {
-            Debug.Assert(utf8PropertyName.Length <= JsonConstants.MaxTokenSize);
+            Debug.Assert(utf8PropertyName.Length <= JsonConstants.MaxUnescapedTokenSize);
 
             JsonWriterHelper.ValidateSingle(value);
 
diff --git a/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.Guid.cs b/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.Guid.cs
index 386f546..6828db5 100644
--- a/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.Guid.cs
+++ b/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.Guid.cs
@@ -26,7 +26,7 @@ namespace System.Text.Json
 
         private void WriteStringHelper(ReadOnlySpan<byte> utf8PropertyName, Guid value)
         {
-            Debug.Assert(utf8PropertyName.Length <= JsonConstants.MaxTokenSize);
+            Debug.Assert(utf8PropertyName.Length <= JsonConstants.MaxUnescapedTokenSize);
 
             WriteStringByOptions(utf8PropertyName, value);
 
diff --git a/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.Helpers.cs b/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.Helpers.cs
index 96418aa..81b8370 100644
--- a/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.Helpers.cs
+++ b/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.Helpers.cs
@@ -21,7 +21,7 @@ namespace System.Text.Json
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         private void ValidatePropertyNameAndDepth(ReadOnlySpan<byte> utf8PropertyName)
         {
-            if (utf8PropertyName.Length > JsonConstants.MaxTokenSize || CurrentDepth >= JsonConstants.MaxWriterDepth)
+            if (utf8PropertyName.Length > JsonConstants.MaxUnescapedTokenSize || CurrentDepth >= JsonConstants.MaxWriterDepth)
                 ThrowHelper.ThrowInvalidOperationOrArgumentException(utf8PropertyName, _currentDepth);
         }
 
diff --git a/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.Literal.cs b/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.Literal.cs
index 63a3c45..d16539c 100644
--- a/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.Literal.cs
+++ b/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.Literal.cs
@@ -24,7 +24,7 @@ namespace System.Text.Json
 
         private void WriteLiteralHelper(ReadOnlySpan<byte> utf8PropertyName, ReadOnlySpan<byte> value)
         {
-            Debug.Assert(utf8PropertyName.Length <= JsonConstants.MaxTokenSize);
+            Debug.Assert(utf8PropertyName.Length <= JsonConstants.MaxUnescapedTokenSize);
 
             WriteLiteralByOptions(utf8PropertyName, value);
 
@@ -300,7 +300,7 @@ namespace System.Text.Json
 
         private void WriteLiteralMinimized(ReadOnlySpan<char> escapedPropertyName, ReadOnlySpan<byte> value)
         {
-            Debug.Assert(value.Length <= JsonConstants.MaxTokenSize);
+            Debug.Assert(value.Length <= JsonConstants.MaxUnescapedTokenSize);
             Debug.Assert(escapedPropertyName.Length < (int.MaxValue / JsonConstants.MaxExpansionFactorWhileTranscoding) - value.Length - 4);
 
             // All ASCII, 2 quotes for property name, and 1 colon => escapedPropertyName.Length + value.Length + 3
@@ -331,7 +331,7 @@ namespace System.Text.Json
 
         private void WriteLiteralMinimized(ReadOnlySpan<byte> escapedPropertyName, ReadOnlySpan<byte> value)
         {
-            Debug.Assert(value.Length <= JsonConstants.MaxTokenSize);
+            Debug.Assert(value.Length <= JsonConstants.MaxUnescapedTokenSize);
             Debug.Assert(escapedPropertyName.Length < int.MaxValue - value.Length - 4);
 
             int minRequired = escapedPropertyName.Length + value.Length + 3; // 2 quotes for property name, and 1 colon
@@ -365,7 +365,7 @@ namespace System.Text.Json
             int indent = Indentation;
             Debug.Assert(indent <= 2 * JsonConstants.MaxWriterDepth);
 
-            Debug.Assert(value.Length <= JsonConstants.MaxTokenSize);
+            Debug.Assert(value.Length <= JsonConstants.MaxUnescapedTokenSize);
             Debug.Assert(escapedPropertyName.Length < (int.MaxValue / JsonConstants.MaxExpansionFactorWhileTranscoding) - indent - value.Length - 5 - s_newLineLength);
 
             // All ASCII, 2 quotes for property name, 1 colon, and 1 space => escapedPropertyName.Length + value.Length + 4
@@ -411,7 +411,7 @@ namespace System.Text.Json
             int indent = Indentation;
             Debug.Assert(indent <= 2 * JsonConstants.MaxWriterDepth);
 
-            Debug.Assert(value.Length <= JsonConstants.MaxTokenSize);
+            Debug.Assert(value.Length <= JsonConstants.MaxUnescapedTokenSize);
             Debug.Assert(escapedPropertyName.Length < int.MaxValue - indent - value.Length - 5 - s_newLineLength);
 
             int minRequired = indent + escapedPropertyName.Length + value.Length + 4; // 2 quotes for property name, 1 colon, and 1 space
diff --git a/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.SignedNumber.cs b/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.SignedNumber.cs
index 04431e6..d74a1ec 100644
--- a/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.SignedNumber.cs
+++ b/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.SignedNumber.cs
@@ -26,7 +26,7 @@ namespace System.Text.Json
 
         private void WriteNumberHelper(ReadOnlySpan<byte> utf8PropertyName, long value)
         {
-            Debug.Assert(utf8PropertyName.Length <= JsonConstants.MaxTokenSize);
+            Debug.Assert(utf8PropertyName.Length <= JsonConstants.MaxUnescapedTokenSize);
 
             WriteNumberByOptions(utf8PropertyName, value);
 
diff --git a/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.String.cs b/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.String.cs
index 950adb4..2dee64c 100644
--- a/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.String.cs
+++ b/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.String.cs
@@ -21,7 +21,7 @@ namespace System.Text.Json
 
         private void WritePropertyNameHelper(ReadOnlySpan<byte> utf8PropertyName)
         {
-            Debug.Assert(utf8PropertyName.Length <= JsonConstants.MaxTokenSize);
+            Debug.Assert(utf8PropertyName.Length <= JsonConstants.MaxUnescapedTokenSize);
 
             WriteStringByOptionsPropertyName(utf8PropertyName);
 
@@ -134,7 +134,7 @@ namespace System.Text.Json
 
         private void WriteStringMinimizedPropertyName(ReadOnlySpan<char> escapedPropertyName)
         {
-            Debug.Assert(escapedPropertyName.Length <= JsonConstants.MaxTokenSize);
+            Debug.Assert(escapedPropertyName.Length <= JsonConstants.MaxEscapedTokenSize);
             Debug.Assert(escapedPropertyName.Length < (int.MaxValue - 4) / JsonConstants.MaxExpansionFactorWhileTranscoding);
 
             // All ASCII, 2 quotes for property name, and 1 colon => escapedPropertyName.Length + 3
@@ -165,7 +165,7 @@ namespace System.Text.Json
             int indent = Indentation;
             Debug.Assert(indent <= 2 * JsonConstants.MaxWriterDepth);
 
-            Debug.Assert(escapedPropertyName.Length <= JsonConstants.MaxTokenSize);
+            Debug.Assert(escapedPropertyName.Length <= JsonConstants.MaxEscapedTokenSize);
             Debug.Assert(escapedPropertyName.Length < (int.MaxValue - 5 - indent - s_newLineLength) / JsonConstants.MaxExpansionFactorWhileTranscoding);
 
             // All ASCII, 2 quotes for property name, 1 colon, and 1 space => escapedPropertyName.Length + 4
@@ -287,7 +287,7 @@ namespace System.Text.Json
 
         private void WriteStringMinimizedPropertyName(ReadOnlySpan<byte> escapedPropertyName)
         {
-            Debug.Assert(escapedPropertyName.Length <= JsonConstants.MaxTokenSize);
+            Debug.Assert(escapedPropertyName.Length <= JsonConstants.MaxEscapedTokenSize);
             Debug.Assert(escapedPropertyName.Length < int.MaxValue - 4);
 
             int minRequired = escapedPropertyName.Length + 3; // 2 quotes for property name, and 1 colon
@@ -318,7 +318,7 @@ namespace System.Text.Json
             int indent = Indentation;
             Debug.Assert(indent <= 2 * JsonConstants.MaxWriterDepth);
 
-            Debug.Assert(escapedPropertyName.Length <= JsonConstants.MaxTokenSize);
+            Debug.Assert(escapedPropertyName.Length <= JsonConstants.MaxEscapedTokenSize);
             Debug.Assert(escapedPropertyName.Length < int.MaxValue - indent - 5 - s_newLineLength);
 
             int minRequired = indent + escapedPropertyName.Length + 4; // 2 quotes for property name, 1 colon, and 1 space
@@ -369,7 +369,7 @@ namespace System.Text.Json
 
         private void WriteStringHelper(ReadOnlySpan<byte> utf8PropertyName, ReadOnlySpan<byte> utf8Value)
         {
-            Debug.Assert(utf8PropertyName.Length <= JsonConstants.MaxTokenSize && utf8Value.Length <= JsonConstants.MaxTokenSize);
+            Debug.Assert(utf8PropertyName.Length <= JsonConstants.MaxUnescapedTokenSize && utf8Value.Length <= JsonConstants.MaxUnescapedTokenSize);
 
             WriteStringByOptions(utf8PropertyName, utf8Value);
 
@@ -536,7 +536,7 @@ namespace System.Text.Json
 
         private void WriteStringHelperEscapeValue(ReadOnlySpan<byte> utf8PropertyName, ReadOnlySpan<char> value)
         {
-            Debug.Assert(utf8PropertyName.Length <= JsonConstants.MaxTokenSize);
+            Debug.Assert(utf8PropertyName.Length <= JsonConstants.MaxUnescapedTokenSize);
 
             JsonWriterHelper.ValidateValue(value);
 
@@ -620,7 +620,7 @@ namespace System.Text.Json
 
         private void WriteStringHelperEscapeValue(ReadOnlySpan<byte> utf8PropertyName, ReadOnlySpan<byte> utf8Value)
         {
-            Debug.Assert(utf8PropertyName.Length <= JsonConstants.MaxTokenSize);
+            Debug.Assert(utf8PropertyName.Length <= JsonConstants.MaxUnescapedTokenSize);
 
             JsonWriterHelper.ValidateValue(utf8Value);
 
@@ -704,7 +704,7 @@ namespace System.Text.Json
 
         private void WriteStringHelperEscapeProperty(ReadOnlySpan<char> propertyName, ReadOnlySpan<byte> utf8Value)
         {
-            Debug.Assert(utf8Value.Length <= JsonConstants.MaxTokenSize);
+            Debug.Assert(utf8Value.Length <= JsonConstants.MaxUnescapedTokenSize);
 
             JsonWriterHelper.ValidateProperty(propertyName);
 
@@ -776,7 +776,7 @@ namespace System.Text.Json
 
         private void WriteStringHelperEscapeProperty(ReadOnlySpan<byte> utf8PropertyName, ReadOnlySpan<byte> utf8Value)
         {
-            Debug.Assert(utf8Value.Length <= JsonConstants.MaxTokenSize);
+            Debug.Assert(utf8Value.Length <= JsonConstants.MaxUnescapedTokenSize);
 
             JsonWriterHelper.ValidateProperty(utf8PropertyName);
 
@@ -1328,7 +1328,7 @@ namespace System.Text.Json
         // TODO: https://github.com/dotnet/corefx/issues/36958
         private void WriteStringMinimized(ReadOnlySpan<char> escapedPropertyName, ReadOnlySpan<char> escapedValue)
         {
-            Debug.Assert(escapedValue.Length <= JsonConstants.MaxTokenSize);
+            Debug.Assert(escapedValue.Length <= JsonConstants.MaxUnescapedTokenSize);
             Debug.Assert(escapedPropertyName.Length < ((int.MaxValue - 6) / JsonConstants.MaxExpansionFactorWhileTranscoding) - escapedValue.Length);
 
             // All ASCII, 2 quotes for property name, 2 quotes for value, and 1 colon => escapedPropertyName.Length + escapedValue.Length + 5
@@ -1363,7 +1363,7 @@ namespace System.Text.Json
         // TODO: https://github.com/dotnet/corefx/issues/36958
         private void WriteStringMinimized(ReadOnlySpan<byte> escapedPropertyName, ReadOnlySpan<byte> escapedValue)
         {
-            Debug.Assert(escapedValue.Length <= JsonConstants.MaxTokenSize);
+            Debug.Assert(escapedValue.Length <= JsonConstants.MaxEscapedTokenSize);
             Debug.Assert(escapedPropertyName.Length < int.MaxValue - escapedValue.Length - 6);
 
             int minRequired = escapedPropertyName.Length + escapedValue.Length + 5; // 2 quotes for property name, 2 quotes for value, and 1 colon
@@ -1399,7 +1399,7 @@ namespace System.Text.Json
         // TODO: https://github.com/dotnet/corefx/issues/36958
         private void WriteStringMinimized(ReadOnlySpan<char> escapedPropertyName, ReadOnlySpan<byte> escapedValue)
         {
-            Debug.Assert(escapedValue.Length <= JsonConstants.MaxTokenSize);
+            Debug.Assert(escapedValue.Length <= JsonConstants.MaxEscapedTokenSize);
             Debug.Assert(escapedPropertyName.Length < (int.MaxValue / JsonConstants.MaxExpansionFactorWhileTranscoding) - escapedValue.Length - 6);
 
             // All ASCII, 2 quotes for property name, 2 quotes for value, and 1 colon => escapedPropertyName.Length + escapedValue.Length + 5
@@ -1435,7 +1435,7 @@ namespace System.Text.Json
         // TODO: https://github.com/dotnet/corefx/issues/36958
         private void WriteStringMinimized(ReadOnlySpan<byte> escapedPropertyName, ReadOnlySpan<char> escapedValue)
         {
-            Debug.Assert(escapedValue.Length <= JsonConstants.MaxTokenSize);
+            Debug.Assert(escapedValue.Length <= JsonConstants.MaxEscapedTokenSize);
             Debug.Assert(escapedPropertyName.Length < (int.MaxValue / JsonConstants.MaxExpansionFactorWhileTranscoding) - escapedValue.Length - 6);
 
             // All ASCII, 2 quotes for property name, 2 quotes for value, and 1 colon => escapedPropertyName.Length + escapedValue.Length + 5
@@ -1474,7 +1474,7 @@ namespace System.Text.Json
             int indent = Indentation;
             Debug.Assert(indent <= 2 * JsonConstants.MaxWriterDepth);
 
-            Debug.Assert(escapedValue.Length <= JsonConstants.MaxTokenSize);
+            Debug.Assert(escapedValue.Length <= JsonConstants.MaxEscapedTokenSize);
             Debug.Assert(escapedPropertyName.Length < ((int.MaxValue - 7 - indent - s_newLineLength) / JsonConstants.MaxExpansionFactorWhileTranscoding) - escapedValue.Length);
 
             // All ASCII, 2 quotes for property name, 2 quotes for value, 1 colon, and 1 space => escapedPropertyName.Length + escapedValue.Length + 6
@@ -1524,7 +1524,7 @@ namespace System.Text.Json
             int indent = Indentation;
             Debug.Assert(indent <= 2 * JsonConstants.MaxWriterDepth);
 
-            Debug.Assert(escapedValue.Length <= JsonConstants.MaxTokenSize);
+            Debug.Assert(escapedValue.Length <= JsonConstants.MaxEscapedTokenSize);
             Debug.Assert(escapedPropertyName.Length < int.MaxValue - indent - escapedValue.Length - 7 - s_newLineLength);
 
             int minRequired = indent + escapedPropertyName.Length + escapedValue.Length + 6; // 2 quotes for property name, 2 quotes for value, 1 colon, and 1 space
@@ -1575,7 +1575,7 @@ namespace System.Text.Json
             int indent = Indentation;
             Debug.Assert(indent <= 2 * JsonConstants.MaxWriterDepth);
 
-            Debug.Assert(escapedValue.Length <= JsonConstants.MaxTokenSize);
+            Debug.Assert(escapedValue.Length <= JsonConstants.MaxEscapedTokenSize);
             Debug.Assert(escapedPropertyName.Length < (int.MaxValue / JsonConstants.MaxExpansionFactorWhileTranscoding) - escapedValue.Length - 7 - indent - s_newLineLength);
 
             // All ASCII, 2 quotes for property name, 2 quotes for value, 1 colon, and 1 space => escapedPropertyName.Length + escapedValue.Length + 6
@@ -1626,7 +1626,7 @@ namespace System.Text.Json
             int indent = Indentation;
             Debug.Assert(indent <= 2 * JsonConstants.MaxWriterDepth);
 
-            Debug.Assert(escapedValue.Length <= JsonConstants.MaxTokenSize);
+            Debug.Assert(escapedValue.Length <= JsonConstants.MaxEscapedTokenSize);
             Debug.Assert(escapedPropertyName.Length < (int.MaxValue / JsonConstants.MaxExpansionFactorWhileTranscoding) - escapedValue.Length - 7 - indent - s_newLineLength);
 
             // All ASCII, 2 quotes for property name, 2 quotes for value, 1 colon, and 1 space => escapedPropertyName.Length + escapedValue.Length + 6
diff --git a/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.UnsignedNumber.cs b/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.UnsignedNumber.cs
index dd02237..1acd0fc 100644
--- a/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.UnsignedNumber.cs
+++ b/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteProperties.UnsignedNumber.cs
@@ -27,7 +27,7 @@ namespace System.Text.Json
 
         private void WriteNumberHelper(ReadOnlySpan<byte> utf8PropertyName, ulong value)
         {
-            Debug.Assert(utf8PropertyName.Length <= JsonConstants.MaxTokenSize);
+            Debug.Assert(utf8PropertyName.Length <= JsonConstants.MaxUnescapedTokenSize);
 
             WriteNumberByOptions(utf8PropertyName, value);
 
diff --git a/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteValues.String.cs b/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteValues.String.cs
index dd8a04a..b23463a 100644
--- a/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteValues.String.cs
+++ b/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.WriteValues.String.cs
@@ -21,7 +21,7 @@ namespace System.Text.Json
 
         private void WriteStringValueHelper(ReadOnlySpan<byte> utf8Value)
         {
-            Debug.Assert(utf8Value.Length <= JsonConstants.MaxTokenSize);
+            Debug.Assert(utf8Value.Length <= JsonConstants.MaxUnescapedTokenSize);
 
             WriteStringByOptions(utf8Value);
 
diff --git a/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.cs b/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.cs
index 783d7a4..07df584 100644
--- a/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.cs
+++ b/src/libraries/System.Text.Json/src/System/Text/Json/Writer/Utf8JsonWriter.cs
@@ -594,7 +594,7 @@ namespace System.Text.Json
 
         private void WriteStartHelper(ReadOnlySpan<byte> utf8PropertyName, byte token)
         {
-            Debug.Assert(utf8PropertyName.Length <= JsonConstants.MaxTokenSize);
+            Debug.Assert(utf8PropertyName.Length <= JsonConstants.MaxUnescapedTokenSize);
 
             ValidateDepth();
 
diff --git a/src/libraries/System.Text.Json/tests/Utf8JsonReaderTests.ValueTextEquals.cs b/src/libraries/System.Text.Json/tests/Utf8JsonReaderTests.ValueTextEquals.cs
index e84247b..d9ea93b 100644
--- a/src/libraries/System.Text.Json/tests/Utf8JsonReaderTests.ValueTextEquals.cs
+++ b/src/libraries/System.Text.Json/tests/Utf8JsonReaderTests.ValueTextEquals.cs
@@ -628,6 +628,11 @@ namespace System.Text.Json.Tests
             Assert.False(json.ValueTextEquals(lookup));
         }
 
+        // NOTE: LookupOverflow test is constrained to run on Windows and MacOSX because it causes
+        //       problems on Linux due to the way deferred memory allocation works. On Linux, the allocation can
+        //       succeed even if there is not enough memory but then the test may get killed by the OOM killer at the
+        //       time the memory is accessed which triggers the full memory allocation.
+        [PlatformSpecific(TestPlatforms.Windows | TestPlatforms.OSX)]
         [ConditionalFact(nameof(IsX64))]
         [OuterLoop]
         public static void LookupOverflow()
diff --git a/src/libraries/System.Text.Json/tests/Utf8JsonWriterTests.cs b/src/libraries/System.Text.Json/tests/Utf8JsonWriterTests.cs
index d6c50e6..eeeb70b 100644
--- a/src/libraries/System.Text.Json/tests/Utf8JsonWriterTests.cs
+++ b/src/libraries/System.Text.Json/tests/Utf8JsonWriterTests.cs
@@ -17,6 +17,10 @@ namespace System.Text.Json.Tests
 {
     public class Utf8JsonWriterTests
     {
+        private const int MaxExpansionFactorWhileEscaping = 6;
+        private const int MaxEscapedTokenSize = 1_000_000_000;   // Max size for already escaped value.
+        private const int MaxUnescapedTokenSize = MaxEscapedTokenSize / MaxExpansionFactorWhileEscaping;  // 166_666_666 bytes
+
         public static bool IsX64 { get; } = IntPtr.Size >= 8;
 
         [Theory]
@@ -1605,6 +1609,11 @@ namespace System.Text.Json.Tests
             Assert.Throws<InvalidOperationException>(() => jsonUtf8.WriteStartArray(JsonEncodedText.Encode("name")));
         }
 
+        // NOTE: WritingTooLargeProperty test is constrained to run on Windows and MacOSX because it causes
+        //       problems on Linux due to the way deferred memory allocation works. On Linux, the allocation can
+        //       succeed even if there is not enough memory but then the test may get killed by the OOM killer at the
+        //       time the memory is accessed which triggers the full memory allocation.
+        [PlatformSpecific(TestPlatforms.Windows | TestPlatforms.OSX)]
         [ConditionalTheory(nameof(IsX64))]
         [OuterLoop]
         [InlineData(true, true)]
@@ -1618,8 +1627,8 @@ namespace System.Text.Json.Tests
 
             try
             {
-                key = new byte[1_000_000_000];
-                keyChars = new char[1_000_000_000];
+                key = new byte[MaxUnescapedTokenSize + 1];
+                keyChars = new char[MaxUnescapedTokenSize + 1];
             }
             catch (OutOfMemoryException)
             {
@@ -1641,6 +1650,11 @@ namespace System.Text.Json.Tests
             Assert.Throws<ArgumentException>(() => jsonUtf8.WriteStartArray(key));
         }
 
+        // NOTE: WritingTooLargePropertyStandalone test is constrained to run on Windows and MacOSX because it causes
+        //       problems on Linux due to the way deferred memory allocation works. On Linux, the allocation can
+        //       succeed even if there is not enough memory but then the test may get killed by the OOM killer at the
+        //       time the memory is accessed which triggers the full memory allocation.
+        [PlatformSpecific(TestPlatforms.Windows | TestPlatforms.OSX)]
         [ConditionalTheory(nameof(IsX64))]
         [OuterLoop]
         [InlineData(true, true)]
@@ -1654,8 +1668,8 @@ namespace System.Text.Json.Tests
 
             try
             {
-                key = new byte[1_000_000_000];
-                keyChars = new char[1_000_000_000];
+                key = new byte[MaxUnescapedTokenSize + 1];
+                keyChars = new char[MaxUnescapedTokenSize + 1];
             }
             catch (OutOfMemoryException)
             {
@@ -4358,6 +4372,11 @@ namespace System.Text.Json.Tests
             }
         }
 
+        // NOTE: WriteLargeKeyOrValue test is constrained to run on Windows and MacOSX because it causes
+        //       problems on Linux due to the way deferred memory allocation works. On Linux, the allocation can
+        //       succeed even if there is not enough memory but then the test may get killed by the OOM killer at the
+        //       time the memory is accessed which triggers the full memory allocation.
+        [PlatformSpecific(TestPlatforms.Windows | TestPlatforms.OSX)]
         [ConditionalTheory(nameof(IsX64))]
         [OuterLoop]
         [InlineData(true, true)]
@@ -4371,8 +4390,8 @@ namespace System.Text.Json.Tests
 
             try
             {
-                key = new byte[1_000_000_001];
-                value = new byte[1_000_000_001];
+                key = new byte[MaxUnescapedTokenSize + 1];
+                value = new byte[MaxUnescapedTokenSize + 1];
             }
             catch (OutOfMemoryException)
             {
@@ -4400,6 +4419,11 @@ namespace System.Text.Json.Tests
             }
         }
 
+        // NOTE: WriteLargeKeyValue test is constrained to run on Windows and MacOSX because it causes
+        //       problems on Linux due to the way deferred memory allocation works. On Linux, the allocation can
+        //       succeed even if there is not enough memory but then the test may get killed by the OOM killer at the
+        //       time the memory is accessed which triggers the full memory allocation.
+        [PlatformSpecific(TestPlatforms.Windows | TestPlatforms.OSX)]
         [ConditionalTheory(nameof(IsX64))]
         [OuterLoop]
         [InlineData(true, true)]
@@ -4415,8 +4439,8 @@ namespace System.Text.Json.Tests
 
             try
             {
-                key = new byte[1_000_000_001];
-                value = new byte[1_000_000_001];
+                key = new byte[MaxUnescapedTokenSize + 1];
+                value = new byte[MaxUnescapedTokenSize + 1];
             }
             catch (OutOfMemoryException)
             {
@@ -4424,11 +4448,43 @@ namespace System.Text.Json.Tests
             }
 
             WriteTooLargeHelper(options, key, value);
-            WriteTooLargeHelper(options, key.Slice(0, 1_000_000_000), value);
-            WriteTooLargeHelper(options, key, value.Slice(0, 1_000_000_000));
+            WriteTooLargeHelper(options, key.Slice(0, MaxUnescapedTokenSize), value);
+            WriteTooLargeHelper(options, key, value.Slice(0, MaxUnescapedTokenSize));
             WriteTooLargeHelper(options, key.Slice(0, 10_000_000 / 3), value.Slice(0, 10_000_000 / 3), noThrow: true);
         }
 
+        // NOTE: WriteLargeKeyEscapedValue test is constrained to run on Windows and MacOSX because it causes
+        //       problems on Linux due to the way deferred memory allocation works. On Linux, the allocation can
+        //       succeed even if there is not enough memory but then the test may get killed by the OOM killer at the
+        //       time the memory is accessed which triggers the full memory allocation.
+        [PlatformSpecific(TestPlatforms.Windows | TestPlatforms.OSX)]
+        [ConditionalTheory(nameof(IsX64))]
+        [OuterLoop]
+        [InlineData(true, true)]
+        [InlineData(true, false)]
+        [InlineData(false, true)]
+        [InlineData(false, false)]
+        public void WriteLargeKeyEscapedValue(bool formatted, bool skipValidation)
+        {
+            var options = new JsonWriterOptions { Indented = formatted, SkipValidation = skipValidation };
+
+            Span<byte> key;
+            Span<byte> value;
+
+            try
+            {
+                // Since the byte values are 0 they will be escaped and size > MaxUnescapedTokenSize but < MaxEscapedTokenSize.
+                key = new byte[MaxUnescapedTokenSize / 2];
+                value = new byte[MaxUnescapedTokenSize / 2];
+            }
+            catch (OutOfMemoryException)
+            {
+                return;
+            }
+
+            WriteTooLargeHelper(options, key, value, noThrow: true);
+        }
+
         [Theory]
         [MemberData(nameof(JsonDateTimeTestData.DateTimeFractionTrimBaseTests), MemberType = typeof(JsonDateTimeTestData))]
         [MemberData(nameof(JsonDateTimeTestData.DateTimeFractionTrimUtcOffsetTests), MemberType = typeof(JsonDateTimeTestData))]