fixes #2607: The ConstantNode from CollectionConstantNode returns typ…

…e full name in LiteralText property (#2609)

* fixes #2607: The ConstantNode from CollectionConstantNode returns type full name in LiteralText property

* update the base line

src/Microsoft.OData.Core/PublicAPI/net45/PublicAPI.Unshipped.txt

@@ -1 +1,2 @@
-
+override Microsoft.OData.ODataEnumValue.ToString() -> string
+override Microsoft.OData.ODataPrimitiveValue.ToString() -> string

src/Microsoft.OData.Core/PublicAPI/netcoreapp3.1/PublicAPI.Unshipped.txt

@@ -1 +1,2 @@
-
+override Microsoft.OData.ODataEnumValue.ToString() -> string
+override Microsoft.OData.ODataPrimitiveValue.ToString() -> string

src/Microsoft.OData.Core/PublicAPI/netstandard1.1/PublicAPI.Unshipped.txt

@@ -1 +1,2 @@
-
+override Microsoft.OData.ODataEnumValue.ToString() -> string
+override Microsoft.OData.ODataPrimitiveValue.ToString() -> string

src/Microsoft.OData.Core/PublicAPI/netstandard2.0/PublicAPI.Unshipped.txt

@@ -1 +1,2 @@
-
+override Microsoft.OData.ODataEnumValue.ToString() -> string
+override Microsoft.OData.ODataPrimitiveValue.ToString() -> string

src/Microsoft.OData.Core/Value/ODataEnumValue.cs

@@ -33,5 +33,14 @@ public ODataEnumValue(string value, string typeName)
 
         /// <summary>Get the type name in edm model.</summary>
         public string TypeName { get; private set; }
+
+        /// <summary>
+        /// Returns a string that represents the current enum.
+        /// </summary>
+        /// <returns>A string that represents the current enum.</returns>
+        public override string ToString()
+        {
+            return Value;
+        }
     }
 }

src/Microsoft.OData.Core/Value/ODataPrimitiveValue.cs

@@ -39,5 +39,14 @@ public ODataPrimitiveValue(object value)
         /// </summary>
         /// <value> The underlying primitive CLR value. </value>
         public object Value { get; private set; }
+
+        /// <summary>
+        /// Returns a string that represents the current primitve.
+        /// </summary>
+        /// <returns>A string that represents the current primitve.</returns>
+        public override string ToString()
+        {
+            return Value.ToString();
+        }
     }
 }

test/FunctionalTests/Microsoft.OData.Core.Tests/ODataValueUtilsTests.cs

@@ -16,6 +16,8 @@ public void SingleEnumToODataValue()
         {
             var enumValue = Feature.Feature1.ToODataValue() as ODataEnumValue;
             Assert.Equal("Feature1", enumValue.Value);
+
+            Assert.Equal("Feature1", enumValue.ToString());
         }
 
         [Fact]

test/PublicApiTests/BaseLine/Microsoft.OData.PublicApi.net45.bsl

@@ -5323,6 +5323,8 @@ public sealed class Microsoft.OData.ODataEnumValue : Microsoft.OData.ODataValue
 
     string TypeName  { public get; }
     string Value  { public get; }
+
+    public virtual string ToString ()
 }
 
 [
@@ -5658,6 +5660,8 @@ public sealed class Microsoft.OData.ODataPrimitiveValue : Microsoft.OData.ODataV
     public ODataPrimitiveValue (object value)
 
     object Value  { public get; }
+
+    public virtual string ToString ()
 }
 
 public sealed class Microsoft.OData.ODataProperty : Microsoft.OData.ODataPropertyInfo {

test/PublicApiTests/BaseLine/Microsoft.OData.PublicApi.netstandard1.1.bsl

@@ -5323,6 +5323,8 @@ public sealed class Microsoft.OData.ODataEnumValue : Microsoft.OData.ODataValue
 
     string TypeName  { public get; }
     string Value  { public get; }
+
+    public virtual string ToString ()
 }
 
 [
@@ -5658,6 +5660,8 @@ public sealed class Microsoft.OData.ODataPrimitiveValue : Microsoft.OData.ODataV
     public ODataPrimitiveValue (object value)
 
     object Value  { public get; }
+
+    public virtual string ToString ()
 }
 
 public sealed class Microsoft.OData.ODataProperty : Microsoft.OData.ODataPropertyInfo {

test/PublicApiTests/BaseLine/Microsoft.OData.PublicApi.netstandard2.0.bsl

@@ -5323,6 +5323,8 @@ public sealed class Microsoft.OData.ODataEnumValue : Microsoft.OData.ODataValue
 
     string TypeName  { public get; }
     string Value  { public get; }
+
+    public virtual string ToString ()
 }
 
 [
@@ -5658,6 +5660,8 @@ public sealed class Microsoft.OData.ODataPrimitiveValue : Microsoft.OData.ODataV
     public ODataPrimitiveValue (object value)
 
     object Value  { public get; }
+
+    public virtual string ToString ()
 }
 
 public sealed class Microsoft.OData.ODataProperty : Microsoft.OData.ODataPropertyInfo {