mcs/class/System.Data.DataSetExtensions/Test/System.Data/DataTableExtensionsTest.cs

   1 //
   2 // DataTableExtensionsTest.cs
   3 //
   4 // Author:
   5 //   Atsushi Enomoto  <atsushi@ximian.com>
   6 //
   7 // Copyright (C) 2008 Novell, Inc. http://www.novell.com
   8 //
   9
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30
  31 using System;
  32 using System.Collections.Generic;
  33 using System.Data;
  34 using System.Linq;
  35 using NUnit.Framework;
  36
  37 namespace MonoTests.System.Data
  38 {
  39         [TestFixture]
  40         public class DataTableExtensionsTest
  41         {
  42                 [Test]
  43                 [ExpectedException (typeof (InvalidOperationException))] // for no rows
  44                 public void CopyToDataTableNoArgNoRows ()
  45                 {
  46                         DataTable dt = new DataTable ();
  47                         dt.Columns.Add ("CID", typeof (int));
  48                         dt.Columns.Add ("CName", typeof (string));
  49                         dt.AsEnumerable ().CopyToDataTable<DataRow> ();
  50                 }
  51
  52                 [Test]
  53                 public void CopyToDataTableNoArg ()
  54                 {
  55                         DataTable dt = new DataTable ();
  56                         dt.Columns.Add ("CID", typeof (int));
  57                         dt.Columns.Add ("CName", typeof (string));
  58                         dt.Rows.Add (new object [] {1, "foo"});
  59                         DataTable dst = dt.AsEnumerable ().CopyToDataTable<DataRow> ();
  60                         Assert.AreEqual (1, dst.Rows.Count, "#1");
  61                         Assert.AreEqual ("foo", dst.Rows [0] ["CName"], "#2");
  62                 }
  63
  64                 [Test]
  65                 // no error for empty table this time.
  66                 [Category ("NotWorking")] // some DataTableReader internal issues
  67                 public void CopyToDataTableTableArgNoRows ()
  68                 {
  69                         DataTable dt = new DataTable ();
  70                         dt.Columns.Add ("CID", typeof (int));
  71                         dt.Columns.Add ("CName", typeof (string));
  72                         DataTable dst = new DataTable ();
  73                         dt.AsEnumerable ().CopyToDataTable<DataRow> (dst, LoadOption.PreserveChanges);
  74                 }
  75
  76                 [Test]
  77                 public void AsEnumerable ()
  78                 {
  79                         DataSet ds = new DataSet ();
  80                         ds.ReadXml ("Test/System.Data/testdataset1.xml");
  81                         DataTable dt = ds.Tables [0];
  82                         Assert.AreEqual ("ScoreList", dt.TableName, "TableName");
  83                         var dv = dt.AsEnumerable ();
  84                         Assert.AreEqual (4, dv.Count (), "#0");
  85                         var i = dv.GetEnumerator ();
  86                         Assert.IsTrue (i.MoveNext (), "#1");
  87                         Assert.AreEqual (1, i.Current ["ID"], "#2");
  88                         Assert.IsTrue (i.MoveNext (), "#3");
  89                         Assert.AreEqual (2, i.Current ["ID"], "#4");
  90                 }
  91
  92 #if !COREFX //LinqDataView is not supported yet
  93                 [Test]
  94                 public void AsDataView ()
  95                 {
  96                         DataSet ds = new DataSet ();
  97                         ds.ReadXml ("Test/System.Data/testdataset1.xml");
  98                         DataTable dt = ds.Tables [0];
  99                         var dv = dt.AsEnumerable ().Where<DataRow> ((DataRow r) => (int) r ["Score"] > 60).AsDataView<DataRow> ();
 100                         Assert.AreEqual (1, dv [0] ["ID"], "#1");
 101                         Assert.AreEqual (4, dv [1] ["ID"], "#2");
 102                 }
 103 #endif
 104         }
 105 }