141 lines
4.4 KiB
C#
141 lines
4.4 KiB
C#
#if !SILVERLIGHT
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using Newtonsoft.Json.Converters;
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using NUnit.Framework;
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using Newtonsoft.Json.Tests.TestObjects;
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using System.Data;
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namespace Newtonsoft.Json.Tests.Converters
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{
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public class DataTableConverterTests : TestFixtureBase
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{
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[Test]
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public void Deserialize()
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{
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string json = @"[
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{
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""id"": 0,
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""item"": ""item 0""
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},
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{
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""id"": 1,
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""item"": ""item 1""
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}
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]";
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DataTable deserializedDataTable = JsonConvert.DeserializeObject<DataTable>(json);
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Assert.IsNotNull(deserializedDataTable);
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Assert.AreEqual(string.Empty, deserializedDataTable.TableName);
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Assert.AreEqual(2, deserializedDataTable.Columns.Count);
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Assert.AreEqual("id", deserializedDataTable.Columns[0].ColumnName);
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Assert.AreEqual(typeof(long), deserializedDataTable.Columns[0].DataType);
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Assert.AreEqual("item", deserializedDataTable.Columns[1].ColumnName);
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Assert.AreEqual(typeof(string), deserializedDataTable.Columns[1].DataType);
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Assert.AreEqual(2, deserializedDataTable.Rows.Count);
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DataRow dr1 = deserializedDataTable.Rows[0];
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Assert.AreEqual(0, dr1["id"]);
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Assert.AreEqual("item 0", dr1["item"]);
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DataRow dr2 = deserializedDataTable.Rows[1];
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Assert.AreEqual(1, dr2["id"]);
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Assert.AreEqual("item 1", dr2["item"]);
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}
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[Test]
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public void Serialize()
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{
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// create a new DataTable.
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DataTable myTable = new DataTable("blah");
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// create DataColumn objects of data types.
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DataColumn colString = new DataColumn("StringCol");
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colString.DataType = typeof(string);
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myTable.Columns.Add(colString);
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DataColumn colInt32 = new DataColumn("Int32Col");
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colInt32.DataType = typeof(int);
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myTable.Columns.Add(colInt32);
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DataColumn colBoolean = new DataColumn("BooleanCol");
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colBoolean.DataType = typeof(bool);
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myTable.Columns.Add(colBoolean);
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DataColumn colTimeSpan = new DataColumn("TimeSpanCol");
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colTimeSpan.DataType = typeof(TimeSpan);
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myTable.Columns.Add(colTimeSpan);
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DataColumn colDateTime = new DataColumn("DateTimeCol");
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colDateTime.DataType = typeof(DateTime);
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colDateTime.DateTimeMode = DataSetDateTime.Utc;
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myTable.Columns.Add(colDateTime);
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DataColumn colDecimal = new DataColumn("DecimalCol");
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colDecimal.DataType = typeof(decimal);
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myTable.Columns.Add(colDecimal);
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// populate one row with values.
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DataRow myNewRow = myTable.NewRow();
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myNewRow["StringCol"] = "Item Name";
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myNewRow["Int32Col"] = 2147483647;
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myNewRow["BooleanCol"] = true;
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myNewRow["TimeSpanCol"] = new TimeSpan(10, 22, 10, 15, 100);
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myNewRow["DateTimeCol"] = new DateTime(2000, 12, 29, 0, 0, 0, DateTimeKind.Utc);
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myNewRow["DecimalCol"] = 64.0021;
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myTable.Rows.Add(myNewRow);
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string json = JsonConvert.SerializeObject(myTable, Formatting.Indented);
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Assert.AreEqual(@"[
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{
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""StringCol"": ""Item Name"",
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""Int32Col"": 2147483647,
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""BooleanCol"": true,
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""TimeSpanCol"": ""10.22:10:15.1000000"",
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""DateTimeCol"": ""\/Date(978048000000)\/"",
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""DecimalCol"": 64.0021
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}
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]", json);
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}
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public class TestDataTableConverter : JsonConverter
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{
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public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
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{
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DataTable d = (DataTable) value;
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writer.WriteValue(d.TableName);
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}
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public override object ReadJson(JsonReader reader, Type objectType, JsonSerializer serializer)
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{
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//reader.Read();
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DataTable d = new DataTable((string)reader.Value);
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return d;
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}
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public override bool CanConvert(Type objectType)
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{
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return (objectType == typeof (DataTable));
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}
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}
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[Test]
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public void PassedInJsonConverterOverridesInternalConverter()
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{
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DataTable t1 = new DataTable("Custom");
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string json = JsonConvert.SerializeObject(t1, Formatting.Indented, new TestDataTableConverter());
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Assert.AreEqual(@"""Custom""", json);
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DataTable t2 = JsonConvert.DeserializeObject<DataTable>(json, new TestDataTableConverter());
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Assert.AreEqual(t1.TableName, t2.TableName);
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}
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}
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}
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#endif |