add unit tests for json

tests/Neo.Json.UnitTests/UT_JArray.cs

@@ -255,17 +255,75 @@ public void TestAsString()
             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 TestCount()
+        {
+            var jArray = new JArray { alice, bob };
+            jArray.Count.Should().Be(2);
+        }
+
+        [TestMethod]
+        public void TestInvalidIndexAccess()
+        {
+            var jArray = new JArray { alice };
+            Action action = () => { var item = jArray[1]; };
+            action.Should().Throw<ArgumentOutOfRangeException>();
+        }
+
+        [TestMethod]
+        public void TestEmptyEnumeration()
+        {
+            var jArray = new JArray();
+            foreach (var item in jArray)
+            {
+                Assert.Fail("Enumeration should not occur on an empty JArray");
+            }
+        }
+
+        [TestMethod]
+        public void TestImplicitConversionFromJTokenArray()
+        {
+            JToken[] jTokens = { alice, bob };
+            JArray jArray = jTokens;
+
+            jArray.Count.Should().Be(2);
+            jArray[0].Should().Be(alice);
+            jArray[1].Should().Be(bob);
+        }
+
+        [TestMethod]
+        public void TestAddNullValues()
+        {
+            var jArray = new JArray();
+            jArray.Add(null);
+            jArray.Count.Should().Be(1);
+            jArray[0].Should().BeNull();
+        }
+
         [TestMethod]
         public void TestClone()
         {
-            var jArray = new JArray
+            var jArray = new JArray { alice, bob };
+            var clone = (JArray)jArray.Clone();
+
+            clone.Should().NotBeSameAs(jArray);
+            clone.Count.Should().Be(jArray.Count);
+
+            for (int i = 0; i < jArray.Count; i++)
             {
-                alice,
-                bob,
-            };
+                clone[i]?.AsString().Should().Be(jArray[i]?.AsString());
+            }
+
             var a = jArray.AsString();
             var b = jArray.Clone().AsString();
             a.Should().Be(b);
         }
+
+        [TestMethod]
+        public void TestReadOnlyBehavior()
+        {
+            var jArray = new JArray();
+            jArray.IsReadOnly.Should().BeFalse();
+        }
     }
 }

tests/Neo.Json.UnitTests/UT_JBoolean.cs

@@ -9,6 +9,8 @@
 // Redistribution and use in source and binary forms with or without
 // modifications are permitted.
 
+using Newtonsoft.Json;
+
 namespace Neo.Json.UnitTests
 {
     [TestClass]
@@ -31,6 +33,49 @@ public void TestAsNumber()
             jTrue.AsNumber().Should().Be(1);
         }
 
+        [TestMethod]
+        public void TestDefaultConstructor()
+        {
+            var defaultJBoolean = new JBoolean();
+            defaultJBoolean.AsNumber().Should().Be(0);
+        }
+
+        [TestMethod]
+        public void TestExplicitFalse()
+        {
+            var explicitFalse = new JBoolean(false);
+            explicitFalse.AsNumber().Should().Be(0);
+        }
+
+        [TestMethod]
+        public void TestNullJBoolean()
+        {
+            JBoolean nullJBoolean = null;
+            Assert.ThrowsException<NullReferenceException>(() => nullJBoolean.AsNumber());
+        }
+
+        [TestMethod]
+        public void TestConversionToOtherTypes()
+        {
+            Assert.AreEqual("true", jTrue.ToString());
+            Assert.AreEqual("false", jFalse.ToString());
+        }
+
+        [TestMethod]
+        public void TestComparisonsWithOtherBooleans()
+        {
+            Assert.IsTrue(jTrue.Equals(new JBoolean(true)));
+            Assert.IsTrue(jFalse.Equals(new JBoolean()));
+        }
+
+        [TestMethod]
+        public void TestSerializationAndDeserialization()
+        {
+            string serialized = JsonConvert.SerializeObject(jTrue);
+            var deserialized = JsonConvert.DeserializeObject<JBoolean>(serialized);
+            Assert.AreEqual(jTrue, deserialized);
+        }
+
         [TestMethod]
         public void TestEqual()
         {

tests/Neo.Json.UnitTests/UT_JPath.cs

@@ -99,6 +99,75 @@ public void TestInvalidFormat()
             Assert.ThrowsException<FormatException>(() => json.JsonPath("$..*"));
             Assert.ThrowsException<FormatException>(() => json.JsonPath("..book"));
             Assert.ThrowsException<FormatException>(() => json.JsonPath("$.."));
+
+            // Test with an empty JSON Path
+            // Assert.ThrowsException<FormatException>(() => json.JsonPath(""));
+
+            // Test with only special characters
+            Assert.ThrowsException<FormatException>(() => json.JsonPath("@#$%^&*()"));
+
+            // Test with unmatched brackets
+            Assert.ThrowsException<FormatException>(() => json.JsonPath("$.store.book["));
+            Assert.ThrowsException<FormatException>(() => json.JsonPath("$.store.book)]"));
+
+            // Test with invalid operators
+            Assert.ThrowsException<FormatException>(() => json.JsonPath("$.store.book=>2"));
+
+            // Test with incorrect field syntax
+            Assert.ThrowsException<FormatException>(() => json.JsonPath("$.store.'book'"));
+            Assert.ThrowsException<FormatException>(() => json.JsonPath("$.store.[book]"));
+
+            // Test with unexpected end of expression
+            Assert.ThrowsException<FormatException>(() => json.JsonPath("$.store.book[?(@.price<"));
+
+            // Test with invalid array indexing
+            // Assert.ThrowsException<FormatException>(() => json.JsonPath("$.store.book['one']"));
+            // Assert.ThrowsException<FormatException>(() => json.JsonPath("$.store.book[999]"));
+
+            // Test with invalid recursive descent
+            Assert.ThrowsException<FormatException>(() => json.JsonPath("$..*..author"));
+
+            // Test with nonexistent functions
+            Assert.ThrowsException<FormatException>(() => json.JsonPath("$.store.book.length()"));
+
+            // Test with incorrect use of wildcards
+            // Assert.ThrowsException<FormatException>(() => json.JsonPath("$.*.store"));
+
+            // Test with improper use of filters
+            Assert.ThrowsException<FormatException>(() => json.JsonPath("$.store.book[?(@.price)]"));
+
+            // Test with mixing of valid and invalid syntax
+            Assert.ThrowsException<FormatException>(() => json.JsonPath("$.store.book[*],$.invalid"));
+
+            // Test with invalid escape sequences
+            Assert.ThrowsException<FormatException>(() => json.JsonPath("$.store.book[\\]"));
+
+            // Test with incorrect property access
+            Assert.ThrowsException<FormatException>(() => json.JsonPath("$.store.'b?ook'"));
+
+            // Test with invalid use of wildcard in array index
+            // Assert.ThrowsException<FormatException>(() => json.JsonPath("$.store.book[*]"));
+
+            // Test with missing operators in filter expressions
+            Assert.ThrowsException<FormatException>(() => json.JsonPath("$.store.book[?(@.price)]"));
+
+            // Test with incorrect boolean logic in filters
+            Assert.ThrowsException<FormatException>(() => json.JsonPath("$.store.book[?(@.price AND @.title)]"));
+
+            // Test with nested filters without proper closure
+            Assert.ThrowsException<FormatException>(() => json.JsonPath("$.store.book[?(@.price[?(@ < 10)])]"));
+
+            // Test with misplaced recursive descent operator
+            // Assert.ThrowsException<FormatException>(() => json.JsonPath("$..store..book"));
+
+            // Test with using JSONPath reserved keywords incorrectly
+            Assert.ThrowsException<FormatException>(() => json.JsonPath("$..@.book"));
+
+            // Test with incorrect combinations of valid operators
+            Assert.ThrowsException<FormatException>(() => json.JsonPath("$.store.book..[0]"));
+
+            // Test with invalid script expressions (if supported)
+            Assert.ThrowsException<FormatException>(() => json.JsonPath("$.store.book[(@.length-1)]"));
         }
     }
 }