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//
// DataRowComparerTest.cs
//
// Author:
// Atsushi Enomoto <atsushi@ximian.com>
//
// Copyright (C) 2008 Novell, Inc. http://www.novell.com
//
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Collections.Generic;
using System.Data;
using NUnit.Framework;
namespace MonoTests.System.Data
{
[TestFixture]
public class DataRowComparerTest
{
[Test]
public void Default ()
{
DataRowComparer<DataRow> c1 = DataRowComparer.Default;
DataRowComparer<DataRow> c2 = DataRowComparer.Default;
Assert.AreSame (c1, c2);
}
[Test]
public void Equals ()
{
DataRowComparer<DataRow> c = DataRowComparer.Default;
DataTable dtA = new DataTable ("tableA");
dtA.Columns.Add ("col1", typeof (int));
dtA.Columns.Add ("col2", typeof (string));
dtA.Columns.Add ("col3", typeof (DateTime));
DataRow r1 = dtA.Rows.Add (3, "bar", new DateTime (2008, 5, 7));
DataRow r2 = dtA.Rows.Add (3, "bar", new DateTime (2008, 5, 7));
Assert.IsTrue (c.Equals (r1, r2), "#A1");
r1 ["col1"] = 4;
Assert.IsFalse (c.Equals (r1, r2), "#A2");
r1 ["col1"] = 3;
Assert.IsTrue (c.Equals (r1, r2), "#A3");
r1 ["col2"] = null;
Assert.IsFalse (c.Equals (r1, r2), "#B1");
r2 ["col2"] = null;
Assert.IsTrue (c.Equals (r1, r2), "#B2");
r1 ["col2"] = "bar";
Assert.IsFalse (c.Equals (r1, r2), "#B3");
r2 ["col2"] = "bar";
Assert.IsTrue (c.Equals (r1, r2), "#B4");
r1 ["col3"] = DBNull.Value;
Assert.IsFalse (c.Equals (r1, r2), "#C1");
r2 ["col3"] = DBNull.Value;
Assert.IsTrue (c.Equals (r1, r2), "#C2");
r1 ["col3"] = new DateTime (2008, 5, 7);
Assert.IsFalse (c.Equals (r1, r2), "#C3");
r2 ["col3"] = new DateTime (2008, 5, 7);
Assert.IsTrue (c.Equals (r1, r2), "#C4");
Assert.IsFalse (c.Equals (r1, null), "#D1");
Assert.IsFalse (c.Equals (null, r1), "#D2");
Assert.IsTrue (c.Equals (null, null), "#D3");
// rows do not have to share the same parent
DataTable dtB = new DataTable ("tableB");
dtB.Columns.Add ("colB1", typeof (int));
dtB.Columns.Add ("colB2", typeof (string));
dtB.Columns.Add ("colB3", typeof (DateTime));
DataRow r3 = dtB.Rows.Add (3, "bar", new DateTime (2008, 5, 7));
Assert.IsTrue (c.Equals (r1, r3), "#E1");
r1 ["col1"] = 4;
Assert.IsFalse (c.Equals (r1, r3), "#E2");
r1 ["col1"] = 3;
Assert.IsTrue (c.Equals (r1, r3), "#E3");
// difference in rowstate is ignored
r1.AcceptChanges ();
Assert.IsTrue (c.Equals (r1, r2), "#G1");
r1 ["col1"] = 4;
Assert.IsFalse (c.Equals (r1, r2), "#G2");
r1 ["col1"] = 3;
Assert.IsTrue (c.Equals (r1, r2), "#G3");
// rows have different number of columns
DataTable dtC = new DataTable ("tableC");
dtC.Columns.Add ("colC1", typeof (int));
dtC.Columns.Add ("colC2", typeof (string));
DataRow r4 = dtC.Rows.Add (3, "bar");
Assert.IsFalse (c.Equals (r1, r4), "#H1");
r1 ["col3"] = DBNull.Value;
Assert.IsFalse (c.Equals (r1, r4), "#H2");
}
[Test]
public void Equals_Rows_Detached ()
{
DataRowComparer<DataRow> c = DataRowComparer.Default;
DataTable dt = new DataTable ("tableA");
dt.Columns.Add ("col1", typeof (int));
dt.Columns.Add ("col2", typeof (string));
dt.Columns.Add ("col3", typeof (DateTime));
DataRow r1 = dt.Rows.Add (3, "bar", new DateTime (2008, 5, 7));
DataRow r2 = dt.NewRow ();
r2.ItemArray = new object [] { 3, "bar", new DateTime (2008, 5, 7) };
DataRow r3 = dt.NewRow ();
r3.ItemArray = new object [] { 3, "bar", new DateTime (2008, 5, 7) };
// left row detached
Assert.IsTrue (c.Equals (r2, r1), "#A1");
r1 ["col1"] = 4;
Assert.IsFalse (c.Equals (r2, r1), "#A2");
r1 ["col1"] = 3;
Assert.IsTrue (c.Equals (r2, r1), "#A3");
// right row detached
Assert.IsTrue (c.Equals (r1, r2), "#B1");
r1 ["col2"] = "baz";
Assert.IsFalse (c.Equals (r1, r2), "#B2");
r1 ["col2"] = "bar";
Assert.IsTrue (c.Equals (r1, r2), "#B3");
// both rows detached
Assert.IsTrue (c.Equals (r2, r3), "#C1");
r2 ["col3"] = new DateTime (2008, 6, 7);
Assert.IsFalse (c.Equals (r2, r3), "#C2");
r2 ["col3"] = new DateTime (2008, 5, 7);
Assert.IsTrue (c.Equals (r2, r3), "#C3");
}
[Test]
public void Equals_Rows_Deleted ()
{
DataRowComparer<DataRow> c = DataRowComparer.Default;
DataTable dtA = new DataTable ("tableA");
dtA.Columns.Add ("col1", typeof (int));
dtA.Columns.Add ("col2", typeof (string));
dtA.Columns.Add ("col3", typeof (DateTime));
DataRow r1 = dtA.Rows.Add (3, "bar", new DateTime (2008, 5, 7));
DataRow r2 = dtA.Rows.Add (3, "bar", new DateTime (2008, 5, 7));
r1.Delete ();
// left row deleted
try {
c.Equals (r1, r2);
Assert.Fail ("#A1");
} catch (RowNotInTableException ex) {
Assert.AreEqual (typeof (RowNotInTableException), ex.GetType (), "#A2");
Assert.IsNull (ex.InnerException, "#A3");
Assert.IsNotNull (ex.Message, "#A4");
}
// right row deleted
try {
c.Equals (r2, r1);
Assert.Fail ("#B1");
} catch (RowNotInTableException ex) {
Assert.AreEqual (typeof (RowNotInTableException), ex.GetType (), "#B2");
Assert.IsNull (ex.InnerException, "#B3");
Assert.IsNotNull (ex.Message, "#B4");
}
r2.Delete ();
// both rows deleted
try {
c.Equals (r2, r1);
Assert.Fail ("#C1");
} catch (RowNotInTableException ex) {
Assert.AreEqual (typeof (RowNotInTableException), ex.GetType (), "#C2");
Assert.IsNull (ex.InnerException, "#C3");
Assert.IsNotNull (ex.Message, "#C4");
}
}
[Test]
public void GetHashCodeWithVersions ()
{
DataSet ds = new DataSet ();
DataTable dt = new DataTable ("MyTable");
ds.Tables.Add (dt);
dt.Columns.Add ("col1");
dt.Columns.Add ("col2");
DataRow r1 = dt.Rows.Add (new object [] {"foo", "bar"});
DataRow r2 = dt.Rows.Add (new object [] {"foo", "bar"});
ds.AcceptChanges ();
DataRowComparer<DataRow> c = DataRowComparer.Default;
Assert.IsTrue (c.GetHashCode (r1) == c.GetHashCode (r2), "#1");
/*
// LAMESPEC: .NET fails here
r2 ["col2"] = "baz";
r2.AcceptChanges ();
Assert.IsFalse (c.GetHashCode (r1) == c.GetHashCode (r2), "#2");
ds.AcceptChanges (); // now r2 original value is "baz"
r2 ["col2"] = "bar";
Assert.IsFalse (c.GetHashCode (r1) == c.GetHashCode (r2), "#3");
// LAMESPEC: .NET fails here
DataRow r3 = dt.Rows.Add (new object [] {"foo", "baz"});
Assert.IsFalse (c.GetHashCode (r1) == c.GetHashCode (r3), "#4");
*/
}
[Test]
public void GetHashCode_Row_Null ()
{
DataRowComparer<DataRow> c = DataRowComparer.Default;
try {
c.GetHashCode (null);
Assert.Fail ("#1");
} catch (ArgumentNullException ex) {
Assert.AreEqual (typeof (ArgumentNullException), ex.GetType (), "#2");
Assert.IsNull (ex.InnerException, "#3");
Assert.IsNotNull (ex.Message, "#4");
Assert.AreEqual ("row", ex.ParamName, "#5");
}
}
}
}
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