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// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
using System.Collections.Generic;
using System.Dynamic;
using Xunit;
using Assert = Microsoft.TestCommon.AssertEx;
namespace System.Web.Helpers.Test
{
public class JsonTest
{
[Fact]
public void EncodeWithDynamicObject()
{
// Arrange
dynamic obj = new DummyDynamicObject();
obj.Name = "Hello";
obj.Age = 1;
obj.Grades = new[] { "A", "B", "C" };
// Act
string json = Json.Encode(obj);
// Assert
Assert.Equal("{\"Name\":\"Hello\",\"Age\":1,\"Grades\":[\"A\",\"B\",\"C\"]}", json);
}
[Fact]
public void EncodeArray()
{
// Arrange
object input = new string[] { "one", "2", "three", "4" };
// Act
string json = Json.Encode(input);
// Assert
Assert.Equal("[\"one\",\"2\",\"three\",\"4\"]", json);
}
[Fact]
public void EncodeDynamicJsonArrayEncodesAsArray()
{
// Arrange
dynamic array = Json.Decode("[1,2,3]");
// Act
string json = Json.Encode(array);
// Assert
Assert.Equal("[1,2,3]", json);
}
[Fact]
public void DecodeDynamicObject()
{
// Act
var obj = Json.Decode("{\"Name\":\"Hello\",\"Age\":1,\"Grades\":[\"A\",\"B\",\"C\"]}");
// Assert
Assert.Equal("Hello", obj.Name);
Assert.Equal(1, obj.Age);
Assert.Equal(3, obj.Grades.Length);
Assert.Equal("A", obj.Grades[0]);
Assert.Equal("B", obj.Grades[1]);
Assert.Equal("C", obj.Grades[2]);
}
[Fact]
public void DecodeDynamicObjectImplicitConversionToDictionary()
{
// Act
IDictionary<string, object> values = Json.Decode("{\"Name\":\"Hello\",\"Age\":1}");
// Assert
Assert.Equal("Hello", values["Name"]);
Assert.Equal(1, values["Age"]);
}
[Fact]
public void DecodeArrayImplicitConversionToArrayAndObjectArray()
{
// Act
Array array = Json.Decode("[1,2,3]");
object[] objArray = Json.Decode("[1,2,3]");
IEnumerable<dynamic> dynamicEnumerable = Json.Decode("[{a:1}]");
// Assert
Assert.NotNull(array);
Assert.NotNull(objArray);
Assert.NotNull(dynamicEnumerable);
}
[Fact]
public void DecodeArrayImplicitConversionToArrayArrayValuesAreDynamic()
{
// Act
dynamic[] objArray = Json.Decode("[{\"A\":1}]");
// Assert
Assert.NotNull(objArray);
Assert.Equal(1, objArray[0].A);
}
[Fact]
public void DecodeDynamicObjectAccessPropertiesByIndexer()
{
// Arrange
var obj = Json.Decode("{\"Name\":\"Hello\",\"Age\":1,\"Grades\":[\"A\",\"B\",\"C\"]}");
// Assert
Assert.Equal("Hello", obj["Name"]);
Assert.Equal(1, obj["Age"]);
Assert.Equal(3, obj["Grades"].Length);
Assert.Equal("A", obj["Grades"][0]);
Assert.Equal("B", obj["Grades"][1]);
Assert.Equal("C", obj["Grades"][2]);
}
[Fact]
public void DecodeDynamicObjectAccessPropertiesByNullIndexerReturnsNull()
{
// Arrange
var obj = Json.Decode("{\"Name\":\"Hello\",\"Age\":1,\"Grades\":[\"A\",\"B\",\"C\"]}");
// Assert
Assert.Null(obj[null]);
}
[Fact]
public void DecodeDateTime()
{
// Act
DateTime dateTime = Json.Decode("\"\\/Date(940402800000)\\/\"");
// Assert
Assert.Equal(1999, dateTime.Year);
Assert.Equal(10, dateTime.Month);
Assert.Equal(20, dateTime.Day);
}
[Fact]
public void DecodeNumber()
{
// Act
int number = Json.Decode("1");
// Assert
Assert.Equal(1, number);
}
[Fact]
public void DecodeString()
{
// Act
string @string = Json.Decode("\"1\"");
// Assert
Assert.Equal("1", @string);
}
[Fact]
public void DecodeArray()
{
// Act
var values = Json.Decode("[11,12,13,14,15]");
// Assert
Assert.Equal(5, values.Length);
Assert.Equal(11, values[0]);
Assert.Equal(12, values[1]);
Assert.Equal(13, values[2]);
Assert.Equal(14, values[3]);
Assert.Equal(15, values[4]);
}
[Fact]
public void DecodeObjectWithArrayProperty()
{
// Act
var obj = Json.Decode("{\"A\":1,\"B\":[1,3,4]}");
object[] bValues = obj.B;
// Assert
Assert.Equal(1, obj.A);
Assert.Equal(1, bValues[0]);
Assert.Equal(3, bValues[1]);
Assert.Equal(4, bValues[2]);
}
[Fact]
public void DecodeArrayWithObjectValues()
{
// Act
var obj = Json.Decode("[{\"A\":1},{\"B\":3, \"C\": \"hello\"}]");
// Assert
Assert.Equal(2, obj.Length);
Assert.Equal(1, obj[0].A);
Assert.Equal(3, obj[1].B);
Assert.Equal("hello", obj[1].C);
}
[Fact]
public void DecodeArraySetValues()
{
// Arrange
var values = Json.Decode("[1,2,3,4,5]");
for (int i = 0; i < values.Length; i++)
{
values[i]++;
}
// Assert
Assert.Equal(5, values.Length);
Assert.Equal(2, values[0]);
Assert.Equal(3, values[1]);
Assert.Equal(4, values[2]);
Assert.Equal(5, values[3]);
Assert.Equal(6, values[4]);
}
[Fact]
public void DecodeArrayPassToMethodThatTakesArray()
{
// Arrange
var values = Json.Decode("[3,2,1]");
// Act
int index = Array.IndexOf(values, 2);
// Assert
Assert.Equal(1, index);
}
[Fact]
public void DecodeArrayGetEnumerator()
{
// Arrange
var values = Json.Decode("[1,2,3]");
// Assert
int val = 1;
foreach (var value in values)
{
Assert.Equal(val, val);
val++;
}
}
[Fact]
public void DecodeObjectPropertyAccessIsSameObjectInstance()
{
// Arrange
var obj = Json.Decode("{\"Name\":{\"Version:\":4.0, \"Key\":\"Key\"}}");
// Assert
Assert.Same(obj.Name, obj.Name);
}
[Fact]
public void DecodeArrayAccessingMembersThatDontExistReturnsNull()
{
// Act
var obj = Json.Decode("[\"a\", \"b\"]");
// Assert
Assert.Null(obj.PropertyThatDoesNotExist);
}
[Fact]
public void DecodeObjectSetProperties()
{
// Act
var obj = Json.Decode("{\"A\":{\"B\":100}}");
obj.A.B = 20;
// Assert
Assert.Equal(20, obj.A.B);
}
[Fact]
public void DecodeObjectSettingObjectProperties()
{
// Act
var obj = Json.Decode("{\"A\":1}");
obj.A = new { B = 1, D = 2 };
// Assert
Assert.Equal(1, obj.A.B);
Assert.Equal(2, obj.A.D);
}
[Fact]
public void DecodeObjectWithArrayPropertyPassPropertyToMethodThatTakesArray()
{
// Arrange
var obj = Json.Decode("{\"A\":[3,2,1]}");
// Act
Array.Sort(obj.A);
// Assert
Assert.Equal(1, obj.A[0]);
Assert.Equal(2, obj.A[1]);
Assert.Equal(3, obj.A[2]);
}
[Fact]
public void DecodeObjectAccessingMembersThatDontExistReturnsNull()
{
// Act
var obj = Json.Decode("{\"A\":1}");
// Assert
Assert.Null(obj.PropertyThatDoesntExist);
}
[Fact]
public void DecodeObjectWithSpecificType()
{
// Act
var person = Json.Decode<Person>("{\"Name\":\"David\", \"Age\":2}");
// Assert
Assert.Equal("David", person.Name);
Assert.Equal(2, person.Age);
}
[Fact]
public void DecodeObjectWithImplicitConversionToNonDynamicTypeThrows()
{
// Act & Assert
Assert.Throws<InvalidOperationException>(() => { Person person = Json.Decode("{\"Name\":\"David\", \"Age\":2, \"Address\":{\"Street\":\"Bellevue\"}}"); }, "Unable to convert to \"System.Web.Helpers.Test.JsonTest+Person\". Use Json.Decode<T> instead.");
}
private class DummyDynamicObject : DynamicObject
{
private IDictionary<string, object> _values = new Dictionary<string, object>();
public override IEnumerable<string> GetDynamicMemberNames()
{
return _values.Keys;
}
public override bool TrySetMember(SetMemberBinder binder, object value)
{
_values[binder.Name] = value;
return true;
}
public override bool TryGetMember(GetMemberBinder binder, out object result)
{
return _values.TryGetValue(binder.Name, out result);
}
}
private class Person
{
public string Name { get; set; }
public int Age { get; set; }
public int GPA { get; set; }
public Address Address { get; set; }
}
private class Address
{
public string Street { get; set; }
}
}
}
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