Improve code coverage

src/Neo/SmartContract/Manifest/ContractAbi.cs

@@ -62,8 +62,8 @@ public static ContractAbi FromJson(JObject json)
         {
             ContractAbi abi = new()
             {
-                Methods = ((JArray)json["methods"]).Select(u => ContractMethodDescriptor.FromJson((JObject)u)).ToArray(),
-                Events = ((JArray)json["events"]).Select(u => ContractEventDescriptor.FromJson((JObject)u)).ToArray()
+                Methods = ((JArray)json!["methods"])?.Select(u => ContractMethodDescriptor.FromJson((JObject)u)).ToArray() ?? [],
+                Events = ((JArray)json!["events"])?.Select(u => ContractEventDescriptor.FromJson((JObject)u)).ToArray() ?? []
             };
             if (abi.Methods.Length == 0) throw new FormatException();
             return abi;

src/Neo/SmartContract/Manifest/ContractManifest.cs

@@ -112,20 +112,21 @@ public static ContractManifest FromJson(JObject json)
         {
             ContractManifest manifest = new()
             {
-                Name = json["name"].GetString(),
-                Groups = ((JArray)json["groups"]).Select(u => ContractGroup.FromJson((JObject)u)).ToArray(),
-                SupportedStandards = ((JArray)json["supportedstandards"]).Select(u => u.GetString()).ToArray(),
+                Name = json["name"]!.GetString(),
+                Groups = ((JArray)json["groups"])?.Select(u => ContractGroup.FromJson((JObject)u)).ToArray() ?? [],
+                SupportedStandards = ((JArray)json["supportedstandards"])?.Select(u => u.GetString()).ToArray() ?? [],
                 Abi = ContractAbi.FromJson((JObject)json["abi"]),
-                Permissions = ((JArray)json["permissions"]).Select(u => ContractPermission.FromJson((JObject)u)).ToArray(),
+                Permissions = ((JArray)json["permissions"])?.Select(u => ContractPermission.FromJson((JObject)u)).ToArray() ?? [],
                 Trusts = WildcardContainer<ContractPermissionDescriptor>.FromJson(json["trusts"], u => ContractPermissionDescriptor.FromJson((JString)u)),
                 Extra = (JObject)json["extra"]
             };
+
             if (string.IsNullOrEmpty(manifest.Name))
                 throw new FormatException();
             _ = manifest.Groups.ToDictionary(p => p.PubKey);
             if (json["features"] is not JObject features || features.Count != 0)
                 throw new FormatException();
-            if (manifest.SupportedStandards.Any(p => string.IsNullOrEmpty(p)))
+            if (manifest.SupportedStandards.Any(string.IsNullOrEmpty))
                 throw new FormatException();
             _ = manifest.SupportedStandards.ToDictionary(p => p);
             _ = manifest.Permissions.ToDictionary(p => p.Contract);

tests/Neo.Json.UnitTests/UT_JArray.cs

@@ -254,5 +254,18 @@ public void TestAsString()
             var s = jArray.AsString();
             Assert.AreEqual(s, "{\"name\":\"alice\",\"age\":30,\"score\":100.001,\"gender\":\"female\",\"isMarried\":true,\"pet\":{\"name\":\"Tom\",\"type\":\"cat\"}},{\"name\":\"bob\",\"age\":100000,\"score\":0.001,\"gender\":\"male\",\"isMarried\":false,\"pet\":{\"name\":\"Paul\",\"type\":\"dog\"}}");
         }
+
+        [TestMethod]
+        public void TestClone()
+        {
+            var jArray = new JArray
+            {
+                alice,
+                bob,
+            };
+            var a = jArray.AsString();
+            var b = jArray.Clone().AsString();
+            a.Should().Be(b);
+        }
     }
 }

tests/Neo.Json.UnitTests/UT_JBoolean.cs

@@ -36,8 +36,10 @@ public void TestEqual()
         {
             Assert.IsTrue(jTrue.Equals(new JBoolean(true)));
             Assert.IsTrue(jTrue == new JBoolean(true));
+            Assert.IsTrue(jTrue != new JBoolean(false));
             Assert.IsTrue(jFalse.Equals(new JBoolean()));
             Assert.IsTrue(jFalse == new JBoolean());
+            Assert.IsTrue(jFalse.GetBoolean().ToString().ToLowerInvariant() == jFalse.ToString());
         }
     }
 }

tests/Neo.Json.UnitTests/UT_JNumber.cs

@@ -9,6 +9,8 @@
 // Redistribution and use in source and binary forms with or without
 // modifications are permitted.
 
+using System.Numerics;
+
 namespace Neo.Json.UnitTests
 {
     enum Woo
@@ -72,6 +74,27 @@ public void TestEqual()
             Assert.IsTrue(minInt.Equals(JNumber.MIN_SAFE_INTEGER));
             Assert.IsTrue(minInt == JNumber.MIN_SAFE_INTEGER);
             Assert.IsTrue(zero == new JNumber());
+            Assert.IsFalse(zero != new JNumber());
+            Assert.IsTrue(zero.AsNumber() == zero.GetNumber());
+            Assert.IsFalse(zero == null);
+
+            var jnum = new JNumber(1);
+            jnum.Equals(new JNumber(1)).Should().BeTrue();
+            jnum.Equals((uint)1).Should().BeTrue();
+            jnum.Equals((int)1).Should().BeTrue();
+            jnum.Equals((ulong)1).Should().BeTrue();
+            jnum.Equals((long)1).Should().BeTrue();
+            jnum.Equals((byte)1).Should().BeTrue();
+            jnum.Equals((sbyte)1).Should().BeTrue();
+            jnum.Equals((short)1).Should().BeTrue();
+            jnum.Equals((ushort)1).Should().BeTrue();
+            jnum.Equals((decimal)1).Should().BeTrue();
+            jnum.Equals((float)1).Should().BeTrue();
+            jnum.Equals((double)1).Should().BeTrue();
+            jnum.Equals(null).Should().BeFalse();
+            var x = jnum;
+            jnum.Equals(x).Should().BeTrue();
+            Assert.ThrowsException<ArgumentOutOfRangeException>(() => jnum.Equals(new BigInteger(1)));
         }
     }
 }

tests/Neo.Json.UnitTests/UT_JString.cs

@@ -63,10 +63,22 @@ public void TestGetEnum()
         public void TestEqual()
         {
             var str = "hello world";
+            var str2 = "hello world2";
             var jString = new JString(str);
-            Assert.IsTrue(jString.Equals(str));
+            var jString2 = new JString(str2);
+
             Assert.IsTrue(jString == str);
-            Assert.IsTrue(jString != "hello world2");
+            Assert.IsFalse(jString == null);
+            Assert.IsTrue(jString != str2);
+            Assert.IsFalse(jString == str2);
+
+            Assert.AreEqual(str, jString.GetString());
+            Assert.IsTrue(jString.Equals(str));
+            Assert.IsFalse(jString.Equals(jString2));
+            Assert.IsFalse(jString.Equals(null));
+            Assert.IsFalse(jString.Equals(123));
+            var reference = jString;
+            Assert.IsTrue(jString.Equals(reference));
         }
     }
 }

tests/Neo.UnitTests/Cryptography/UT_BloomFilter.cs

@@ -39,6 +39,8 @@ public void TestBloomFIlterConstructorGetKMTweak()
             uint nTweak = 123456;
             Action action = () => new BloomFilter(m, n, nTweak);
             action.Should().Throw<ArgumentOutOfRangeException>();
+            action = () => new BloomFilter(m, n, nTweak, new byte[] { 0, 1, 2, 3, 4 });
+            action.Should().Throw<ArgumentOutOfRangeException>();
 
             m = 7;
             n = -10;

tests/Neo.UnitTests/Cryptography/UT_Cryptography_Helper.cs

@@ -41,6 +41,17 @@ public void TestBase58CheckDecode()
             input = "3vQB7B6MrGQZaxCuFg4og";
             action = () => input.Base58CheckDecode();
             action.Should().Throw<FormatException>();
+
+            Assert.ThrowsException<FormatException>(() => string.Empty.Base58CheckDecode());
+        }
+
+        [TestMethod]
+        public void TestMurmurReadOnlySpan()
+        {
+            ReadOnlySpan<byte> input = "Hello, world!"u8;
+            byte[] input2 = input.ToArray();
+            input.Murmur32(0).Should().Be(input2.Murmur32(0));
+            input.Murmur128(0).Should().Equal(input2.Murmur128(0));
         }
 
         [TestMethod]
@@ -50,6 +61,19 @@ public void TestSha256()
             byte[] result = value.Sha256(0, value.Length);
             string resultStr = result.ToHexString();
             resultStr.Should().Be("b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9");
+            value.Sha256().Should().Equal(result);
+            ((Span<byte>)value).Sha256().Should().Equal(result);
+            ((ReadOnlySpan<byte>)value).Sha256().Should().Equal(result);
+        }
+
+        [TestMethod]
+        public void TestKeccak256()
+        {
+            var input = "Hello, world!"u8.ToArray();
+            var result = input.Keccak256();
+            result.ToHexString().Should().Be("b6e16d27ac5ab427a7f68900ac5559ce272dc6c37c82b3e052246c82244c50e4");
+            ((Span<byte>)input).Keccak256().Should().Equal(result);
+            ((ReadOnlySpan<byte>)input).Keccak256().Should().Equal(result);
         }
 
         [TestMethod]

tests/Neo.UnitTests/Neo.UnitTests.csproj

@@ -12,6 +12,9 @@
   </ItemGroup>
 
   <ItemGroup>
+    <None Update="SmartContract\Manifest\TestFile\**">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
     <None Update="test.config.json">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
       <CopyToPublishDirectory>PreserveNewest</CopyToPublishDirectory>

tests/Neo.UnitTests/Network/P2P/Payloads/UT_Block.cs

@@ -13,14 +13,26 @@
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 using Neo.IO;
 using Neo.Json;
+using Neo.Ledger;
 using Neo.Network.P2P.Payloads;
+using Neo.SmartContract;
+using Neo.SmartContract.Native;
 
 namespace Neo.UnitTests.Network.P2P.Payloads
 {
     [TestClass]
     public class UT_Block
     {
         Block uut;
+        private static ApplicationEngine GetEngine(bool hasContainer = false, bool hasSnapshot = false, bool hasBlock = false, bool addScript = true, long gas = 20_00000000)
+        {
+            var tx = hasContainer ? TestUtils.GetTransaction(UInt160.Zero) : null;
+            var snapshot = hasSnapshot ? TestBlockchain.GetTestSnapshot() : null;
+            var block = hasBlock ? new Block { Header = new Header() } : null;
+            var engine = ApplicationEngine.Create(TriggerType.Application, tx, snapshot, block, TestBlockchain.TheNeoSystem.Settings, gas: gas);
+            if (addScript) engine.LoadScript(new byte[] { 0x01 });
+            return engine;
+        }
 
         [TestInitialize]
         public void TestSetup()
@@ -136,6 +148,15 @@ private void AssertStandardBlockTestVals(UInt256 val256, UInt256 merkRoot, UInt1
         public void Equals_SameObj()
         {
             uut.Equals(uut).Should().BeTrue();
+            var obj = uut as object;
+            uut.Equals(obj).Should().BeTrue();
+        }
+
+        [TestMethod]
+        public void TestGetHashCode()
+        {
+            var snapshot = GetEngine(true, true).Snapshot;
+            NativeContract.Ledger.GetBlock(snapshot, 0).GetHashCode().Should().Be(-626492395);
         }
 
         [TestMethod]

tests/Neo.UnitTests/SmartContract/Manifest/TestFile/SampleContractCall.manifest.json

@@ -0,0 +1 @@
+{"name":"SampleContractCall","groups":[],"features":{},"supportedstandards":[],"abi":{"methods":[{"name":"onNEP17Payment","parameters":[{"name":"from","type":"Hash160"},{"name":"amount","type":"Integer"},{"name":"data","type":"Integer"}],"returntype":"Void","offset":0,"safe":false},{"name":"_initialize","parameters":[],"returntype":"Void","offset":91,"safe":false}],"events":[]},"permissions":[],"trusts":[],"extra":{"Author":"core-dev","Version":"0.0.1","Description":"A sample contract to demonstrate how to call a contract","Sourcecode":"https://github.com/neo-project/neo-devpack-dotnet/tree/master/examples/"}}

tests/Neo.UnitTests/SmartContract/Manifest/TestFile/SampleEvent.manifest.json

@@ -0,0 +1 @@
+{"name":"SampleEvent","groups":[],"features":{},"supportedstandards":[],"abi":{"methods":[{"name":"main","parameters":[],"returntype":"Boolean","offset":0,"safe":false}],"events":[{"name":"new_event_name","parameters":[{"name":"arg1","type":"ByteArray"},{"name":"arg2","type":"String"},{"name":"arg3","type":"Integer"}]},{"name":"event2","parameters":[{"name":"arg1","type":"ByteArray"},{"name":"arg2","type":"Integer"}]}]},"permissions":[{"contract":"*","methods":"*"}],"trusts":[],"extra":{"Author":"code-dev","Description":"A sample contract that demonstrates how to use Events","Version":"0.0.1","Sourcecode":"https://github.com/neo-project/neo-devpack-dotnet/tree/master/examples/"}}

tests/Neo.UnitTests/SmartContract/Manifest/TestFile/SampleException.manifest.json

@@ -0,0 +1 @@
+{"name":"SampleException","groups":[],"features":{},"supportedstandards":[],"abi":{"methods":[{"name":"try01","parameters":[],"returntype":"Any","offset":0,"safe":false},{"name":"try02","parameters":[],"returntype":"Any","offset":77,"safe":false},{"name":"try03","parameters":[],"returntype":"Any","offset":166,"safe":false},{"name":"tryNest","parameters":[],"returntype":"Any","offset":259,"safe":false},{"name":"tryFinally","parameters":[],"returntype":"Any","offset":404,"safe":false},{"name":"tryFinallyAndRethrow","parameters":[],"returntype":"Any","offset":474,"safe":false},{"name":"tryCatch","parameters":[],"returntype":"Any","offset":550,"safe":false},{"name":"tryWithTwoFinally","parameters":[],"returntype":"Any","offset":628,"safe":false},{"name":"tryecpointCast","parameters":[],"returntype":"Any","offset":920,"safe":false},{"name":"tryvalidByteString2Ecpoint","parameters":[],"returntype":"Any","offset":1010,"safe":false},{"name":"tryinvalidByteArray2UInt160","parameters":[],"returntype":"Any","offset":1100,"safe":false},{"name":"tryvalidByteArray2UInt160","parameters":[],"returntype":"Any","offset":1190,"safe":false},{"name":"tryinvalidByteArray2UInt256","parameters":[],"returntype":"Any","offset":1280,"safe":false},{"name":"tryvalidByteArray2UInt256","parameters":[],"returntype":"Any","offset":1370,"safe":false},{"name":"tryNULL2Ecpoint_1","parameters":[],"returntype":"Array","offset":1476,"safe":false},{"name":"tryNULL2Uint160_1","parameters":[],"returntype":"Array","offset":1652,"safe":false},{"name":"tryNULL2Uint256_1","parameters":[],"returntype":"Array","offset":1828,"safe":false},{"name":"tryNULL2Bytestring_1","parameters":[],"returntype":"Array","offset":1990,"safe":false},{"name":"tryUncatchableException","parameters":[],"returntype":"Any","offset":2141,"safe":false},{"name":"_initialize","parameters":[],"returntype":"Void","offset":2219,"safe":false}],"events":[]},"permissions":[{"contract":"*","methods":"*"}],"trusts":[],"extra":{"Author":"core-dev","Description":"A sample contract to demonstrate how to handle exception","Version":"0.0.1","Sourcecode":"https://github.com/neo-project/neo-devpack-dotnet/tree/master/examples/"}}

tests/Neo.UnitTests/SmartContract/Manifest/TestFile/SampleHelloWorld.manifest.json

@@ -0,0 +1 @@
+{"name":"SampleHelloWorld","groups":[],"features":{},"supportedstandards":[],"abi":{"methods":[{"name":"sayHello","parameters":[],"returntype":"String","offset":0,"safe":true}],"events":[]},"permissions":[{"contract":"*","methods":"*"}],"trusts":[],"extra":{"Description":"A simple \u0060hello world\u0060 contract","E-mail":"[email protected]","Version":"0.0.1","Sourcecode":"https://github.com/neo-project/neo-devpack-dotnet/tree/master/examples/"}}

tests/Neo.UnitTests/SmartContract/Manifest/TestFile/SampleNep17Token.manifest.json

@@ -0,0 +1 @@
+{"name":"SampleNep17Token","groups":[],"features":{},"supportedstandards":["NEP-17"],"abi":{"methods":[{"name":"symbol","parameters":[],"returntype":"String","offset":1333,"safe":true},{"name":"decimals","parameters":[],"returntype":"Integer","offset":1348,"safe":true},{"name":"totalSupply","parameters":[],"returntype":"Integer","offset":52,"safe":true},{"name":"balanceOf","parameters":[{"name":"owner","type":"Hash160"}],"returntype":"Integer","offset":98,"safe":true},{"name":"transfer","parameters":[{"name":"from","type":"Hash160"},{"name":"to","type":"Hash160"},{"name":"amount","type":"Integer"},{"name":"data","type":"Any"}],"returntype":"Boolean","offset":362,"safe":false},{"name":"getOwner","parameters":[],"returntype":"Hash160","offset":808,"safe":true},{"name":"setOwner","parameters":[{"name":"newOwner","type":"Any"}],"returntype":"Void","offset":877,"safe":false},{"name":"getMinter","parameters":[],"returntype":"Hash160","offset":980,"safe":true},{"name":"setMinter","parameters":[{"name":"newMinter","type":"Hash160"}],"returntype":"Void","offset":1025,"safe":false},{"name":"mint","parameters":[{"name":"to","type":"Hash160"},{"name":"amount","type":"Integer"}],"returntype":"Void","offset":1103,"safe":false},{"name":"burn","parameters":[{"name":"account","type":"Hash160"},{"name":"amount","type":"Integer"}],"returntype":"Void","offset":1158,"safe":false},{"name":"verify","parameters":[],"returntype":"Boolean","offset":1216,"safe":true},{"name":"update","parameters":[{"name":"nefFile","type":"ByteArray"},{"name":"manifest","type":"String"}],"returntype":"Boolean","offset":1222,"safe":false},{"name":"_initialize","parameters":[],"returntype":"Void","offset":1271,"safe":false}],"events":[{"name":"Transfer","parameters":[{"name":"from","type":"Hash160"},{"name":"to","type":"Hash160"},{"name":"amount","type":"Integer"}]},{"name":"SetOwner","parameters":[{"name":"newOwner","type":"Hash160"}]},{"name":"SetMinter","parameters":[{"name":"newMinter","type":"Hash160"}]}]},"permissions":[{"contract":"*","methods":"*"}],"trusts":[],"extra":{"Author":"core-dev","Version":"0.0.1","Description":"A sample NEP-17 token","Sourcecode":"https://github.com/neo-project/neo-devpack-dotnet/tree/master/examples/"}}

tests/Neo.UnitTests/SmartContract/Manifest/TestFile/SampleOracle.manifest.json

@@ -0,0 +1 @@
+{"name":"SampleOracle","groups":[],"features":{},"supportedstandards":[],"abi":{"methods":[{"name":"getResponse","parameters":[],"returntype":"String","offset":0,"safe":true},{"name":"doRequest","parameters":[],"returntype":"Void","offset":35,"safe":false},{"name":"onOracleResponse","parameters":[{"name":"requestedUrl","type":"String"},{"name":"userData","type":"Any"},{"name":"oracleResponse","type":"Integer"},{"name":"jsonString","type":"String"}],"returntype":"Void","offset":333,"safe":false}],"events":[]},"permissions":[{"contract":"*","methods":"*"}],"trusts":[],"extra":{"Author":"code-dev","Description":"A sample contract to demonstrate how to use Example.SmartContract.Oracle Service","Version":"0.0.1","Sourcecode":"https://github.com/neo-project/neo-devpack-dotnet/tree/master/examples/"}}

tests/Neo.UnitTests/SmartContract/Manifest/UT_ContractPermissionDescriptor.cs

@@ -9,10 +9,13 @@
 // Redistribution and use in source and binary forms with or without
 // modifications are permitted.
 
+using FluentAssertions;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
+using Neo.Json;
 using Neo.SmartContract.Manifest;
 using Neo.SmartContract.Native;
 using Neo.Wallets;
+using System;
 using System.Security.Cryptography;
 
 namespace Neo.UnitTests.SmartContract.Manifest
@@ -34,7 +37,7 @@ public void TestCreateByECPointAndIsWildcard()
         }
 
         [TestMethod]
-        public void TestFromAndToJson()
+        public void TestContractPermissionDescriptorFromAndToJson()
         {
             byte[] privateKey = new byte[32];
             RandomNumberGenerator rng = RandomNumberGenerator.Create();
@@ -44,6 +47,20 @@ public void TestFromAndToJson()
             ContractPermissionDescriptor result = ContractPermissionDescriptor.FromJson(temp.ToJson());
             Assert.AreEqual(null, result.Hash);
             Assert.AreEqual(result.Group, result.Group);
+            Assert.ThrowsException<FormatException>(() => ContractPermissionDescriptor.FromJson(string.Empty));
+        }
+
+        [TestMethod]
+        public void TestContractManifestFromJson()
+        {
+            Assert.ThrowsException<NullReferenceException>(() => ContractManifest.FromJson(new Json.JObject()));
+            var jsonFiles = System.IO.Directory.GetFiles(System.IO.Path.Combine("SmartContract", "Manifest", "TestFile"));
+            foreach (var item in jsonFiles)
+            {
+                var json = JObject.Parse(System.IO.File.ReadAllText(item)) as JObject;
+                var manifest = ContractManifest.FromJson(json);
+                manifest.ToJson().ToString().Should().Be(json.ToString());
+            }
         }
 
         [TestMethod]

tests/Neo.UnitTests/SmartContract/Native/UT_StdLib.cs

@@ -9,6 +9,7 @@
 // Redistribution and use in source and binary forms with or without
 // modifications are permitted.
 
+using FluentAssertions;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 using Neo.SmartContract;
 using Neo.SmartContract.Native;
@@ -53,6 +54,9 @@ public void TestItoaAtoi()
             Assert.ThrowsException<System.FormatException>(() => StdLib.Atoi("a", 10));
             Assert.ThrowsException<System.FormatException>(() => StdLib.Atoi("g", 16));
             Assert.ThrowsException<System.ArgumentOutOfRangeException>(() => StdLib.Atoi("a", 11));
+
+            StdLib.Atoi(StdLib.Itoa(BigInteger.One, 10)).Should().Be(BigInteger.One);
+            StdLib.Atoi(StdLib.Itoa(BigInteger.MinusOne, 10)).Should().Be(BigInteger.MinusOne);
         }
 
         [TestMethod]