| public static CreateChildDataTable ( ) : DataTable | ||
| Результат | DataTable | |
public void AddNew()
{
//create the source datatable
DataTable dt = DataProvider.CreateChildDataTable();
//create the dataview for the table
DataView dv = new DataView(dt);
int CountView = dv.Count;
int CountTable = dt.Rows.Count;
DataRowView drv = null;
// AddNew - DataView Row Count
drv = dv.AddNew();
Assert.Equal(dv.Count, CountView + 1);
// AddNew - Table Row Count
Assert.Equal(dt.Rows.Count, CountTable);
// AddNew - new row in DataTable
drv.EndEdit();
Assert.Equal(dt.Rows.Count, CountTable + 1);
// AddNew - new row != null
Assert.Equal(true, drv != null);
// AddNew - check table
Assert.Equal(dt, drv.Row.Table);
}
public void CreateChildView_ByDataRelation()
{
//create a dataset with two tables, with a DataRelation between them
DataTable dtParent = DataProvider.CreateParentDataTable();
DataTable dtChild = DataProvider.CreateChildDataTable();
var ds = new DataSet();
ds.Tables.Add(dtParent);
ds.Tables.Add(dtChild);
DataRelation drel = new DataRelation("ParentChild", dtParent.Columns["ParentId"], dtChild.Columns["ParentId"]);
ds.Relations.Add(drel);
//DataView dvChild = null;
DataView dvParent = new DataView(dtParent);
DataView dvTmp1 = dvParent[0].CreateChildView(drel);
DataView dvTmp2 = dvParent[3].CreateChildView(drel);
// ChildView != null
Assert.NotNull(dvTmp1);
// Child view table = ChildTable
Assert.Equal(dtChild, dvTmp1.Table);
// ChildView1.Table = ChildView2.Table
Assert.Equal(dvTmp2.Table, dvTmp1.Table);
//the child dataview are different
// Child DataViews different
Assert.False(dvTmp1.Equals(dvTmp2));
}
public void RelationName()
{
var ds = new DataSet();
DataTable dtChild = DataProvider.CreateChildDataTable();
DataTable dtParent = DataProvider.CreateParentDataTable();
ds.Tables.Add(dtParent);
ds.Tables.Add(dtChild);
DataRelation dRel;
dRel = new DataRelation(null, dtParent.Columns[0], dtChild.Columns[0]);
// RelationName default 1
Assert.Equal(string.Empty, dRel.RelationName);
ds.Relations.Add(dRel);
// RelationName default 2
Assert.Equal("Relation1", dRel.RelationName);
dRel.RelationName = "myRelation";
// RelationName get/set
Assert.Equal("myRelation", dRel.RelationName);
}
public void Ctor_DataColumns()
{
Exception tmpEx = new Exception();
DataTable dtParent = DataProvider.CreateParentDataTable();
// Ctor - parent
UniqueConstraint uc = new UniqueConstraint(new DataColumn[] { dtParent.Columns[0], dtParent.Columns[1] });
// Ctor - add existing column
dtParent.Rows.Add(new object[] { 99, "str1", "str2" });
dtParent.Constraints.Add(uc);
Assert.Throws <ConstraintException>(() => dtParent.Rows.Add(new object[] { 99, "str1", "str2" }));
DataTable dtChild = DataProvider.CreateChildDataTable();
uc = new UniqueConstraint(new DataColumn[] { dtChild.Columns[0], dtChild.Columns[1] });
dtChild.Constraints.Add(uc);
dtChild.Constraints.Clear();
uc = new UniqueConstraint(new DataColumn[] { dtChild.Columns[1], dtChild.Columns[2] });
//target columnn are not unnique, will throw an exception
// ArgumentException - child
AssertExtensions.Throws <ArgumentException>(null, () => dtChild.Constraints.Add(uc));
}
public void ToStringTest()
{
var ds = new DataSet();
DataTable dtChild = DataProvider.CreateChildDataTable();
DataTable dtParent = DataProvider.CreateParentDataTable();
ds.Tables.Add(dtParent);
ds.Tables.Add(dtChild);
DataRelation dRel;
dRel = new DataRelation(null, dtParent.Columns[0], dtChild.Columns[0]);
// ToString 1
Assert.Equal(string.Empty, dRel.ToString());
ds.Relations.Add(dRel);
// ToString 2
Assert.Equal("Relation1", dRel.ToString());
dRel.RelationName = "myRelation";
// ToString 3
Assert.Equal("myRelation", dRel.ToString());
}
public void Ctor_ByNameDataColumnsArrays()
{
var ds = new DataSet();
DataTable dtChild = DataProvider.CreateChildDataTable();
DataTable dtParent = DataProvider.CreateParentDataTable();
ds.Tables.Add(dtParent);
ds.Tables.Add(dtChild);
DataRelation dRel;
//check some exception
// DataRelation - CTor ArgumentException, two columns child
AssertExtensions.Throws <ArgumentException>(null, () =>
{
dRel = new DataRelation("MyRelation", new DataColumn[] { dtParent.Columns[0] }, new DataColumn[] { dtChild.Columns[0], dtChild.Columns[2] });
});
dRel = new DataRelation("MyRelation", new DataColumn[] { dtParent.Columns[0], dtParent.Columns[1] }, new DataColumn[] { dtChild.Columns[0], dtChild.Columns[2] });
// DataRelation - Add Relation ArgumentException, fail on creating child Constraints
AssertExtensions.Throws <ArgumentException>(null, () =>
{
ds.Relations.Add(dRel);
});
// DataRelation ArgumentException - parent Constraints
Assert.Equal(1, dtParent.Constraints.Count);
// DataRelation ArgumentException - child Constraints
Assert.Equal(0, dtChild.Constraints.Count);
// DataRelation ArgumentException - DataSet.Relation count
Assert.Equal(1, ds.Relations.Count);
//begin to check the relation ctor
dtParent.Constraints.Clear();
dtChild.Constraints.Clear();
ds.Relations.Clear();
dRel = new DataRelation("MyRelation", new DataColumn[] { dtParent.Columns[0] }, new DataColumn[] { dtChild.Columns[0] });
ds.Relations.Add(dRel);
// DataSet DataRelation count
Assert.Equal(1, ds.Relations.Count);
// DataRelation - parent Constraints
Assert.Equal(1, dtParent.Constraints.Count);
// DataRelation - child Constraints
Assert.Equal(1, dtChild.Constraints.Count);
// DataRelation - child relations
Assert.Equal(dRel, dtParent.ChildRelations[0]);
// DataRelation - parent relations
Assert.Equal(dRel, dtChild.ParentRelations[0]);
// DataRelation - name
Assert.Equal("MyRelation", dRel.RelationName);
}
public void CopyTo()
{
//create the source datatable
DataTable dt = DataProvider.CreateChildDataTable();
//create the dataview for the table
DataView dv = new DataView(dt);
DataRowView[] drvExpected = null;
DataRowView[] drvResult = null;
// ------- Copy from Index=0
drvExpected = new DataRowView[dv.Count];
for (int i = 0; i < dv.Count; i++)
{
drvExpected[i] = dv[i];
}
drvResult = new DataRowView[dv.Count];
// CopyTo from index 0
dv.CopyTo(drvResult, 0);
Assert.Equal(drvResult, drvExpected);
// ------- Copy from Index=3
drvExpected = new DataRowView[dv.Count + 3];
for (int i = 0; i < dv.Count; i++)
{
drvExpected[i + 3] = dv[i];
}
drvResult = new DataRowView[dv.Count + 3];
// CopyTo from index 3
dv.CopyTo(drvResult, 3);
Assert.Equal(drvResult, drvExpected);
// ------- Copy from Index=3,larger array
drvExpected = new DataRowView[dv.Count + 9];
for (int i = 0; i < dv.Count; i++)
{
drvExpected[i + 3] = dv[i];
}
drvResult = new DataRowView[dv.Count + 9];
// CopyTo from index 3,larger array
dv.CopyTo(drvResult, 3);
Assert.Equal(drvResult, drvExpected);
// ------- CopyTo smaller array, check exception
drvResult = new DataRowView[dv.Count - 1];
// CopyTo smaller array, check exception
Assert.Throws <IndexOutOfRangeException>(() =>
{
dv.CopyTo(drvResult, 0);
});
}
private DataSet GetNewDataSet()
{
DataSet ds1 = new DataSet();
ds1.Tables.Add(DataProvider.CreateParentDataTable());
ds1.Tables.Add(DataProvider.CreateChildDataTable());
ds1.Tables[0].PrimaryKey = new DataColumn[] { ds1.Tables[0].Columns[0] };
return(ds1);
}
private DataSet GetDataSet()
{
var ds = new DataSet();
DataTable dt1 = DataProvider.CreateParentDataTable();
DataTable dt2 = DataProvider.CreateChildDataTable();
ds.Tables.Add(dt1);
ds.Tables.Add(dt2);
return(ds);
}
public void AddRange_C2()
{
var ds = new DataSet();
ds.Tables.Add(DataProvider.CreateParentDataTable());
ds.Tables.Add(DataProvider.CreateChildDataTable());
ds.Tables[1].Constraints.AddRange(GetConstraintArray(ds)); //Cuz foreign key belongs to child table
Assert.Equal(2, ds.Tables[1].Constraints.Count);
Assert.Equal(1, ds.Tables[0].Constraints.Count);
}
public void Ctor_NameParentColsChildCols()
{
DataTable dtParent = DataProvider.CreateParentDataTable();
DataTable dtChild = DataProvider.CreateChildDataTable();
ForeignKeyConstraint fc = new ForeignKeyConstraint("myForeignKey", new DataColumn[] { dtParent.Columns[0] }, new DataColumn[] { dtChild.Columns[0] });
// Ctor
// Ctor - name
Assert.Equal("myForeignKey", fc.ConstraintName);
}
public void Sort()
{
DataRow[] drArrTable;
//create the source datatable
DataTable dt = DataProvider.CreateChildDataTable();
//create the dataview for the table
DataView dv = new DataView(dt);
dv.Sort = "ParentId";
drArrTable = dt.Select("", "ParentId");
// sort = ParentId
Assert.Equal(true, CompareSortedRowsByParentAndChildId(dv, drArrTable));
dv.Sort = "ChildId";
drArrTable = dt.Select("", "ChildId");
// sort = ChildId
Assert.Equal(true, CompareSortedRowsByParentAndChildId(dv, drArrTable));
dv.Sort = "ParentId Desc, ChildId";
drArrTable = dt.Select("", "ParentId Desc, ChildId");
// sort = ParentId Desc, ChildId
Assert.Equal(true, CompareSortedRowsByParentAndChildId(dv, drArrTable));
dv.Sort = "ChildId Asc, ParentId";
drArrTable = dt.Select("", "ChildId Asc, ParentId");
// sort = ChildId Asc, ParentId
Assert.Equal(true, CompareSortedRowsByParentAndChildId(dv, drArrTable));
dv.Sort = "ChildId Asc, ChildId Desc";
drArrTable = dt.Select("", "ChildId Asc, ChildId Desc");
// sort = ChildId Asc, ChildId Desc
Assert.Equal(true, CompareSortedRowsByParentAndChildId(dv, drArrTable));
// IndexOutOfRangeException - 1
Assert.Throws <IndexOutOfRangeException>(() =>
{
dv.Sort = "something";
});
// IndexOutOfRangeException - 2
Assert.Throws <IndexOutOfRangeException>(() =>
{
dv.Sort = "ColumnId Desc Asc";
});
// IndexOutOfRangeException - 3
Assert.Throws <IndexOutOfRangeException>(() =>
{
dv.Sort = "ColumnId blabla";
});
}
public void CanRemove_PartOfRelation()
{
var ds = new DataSet();
ds.Tables.Add(DataProvider.CreateParentDataTable());
ds.Tables.Add(DataProvider.CreateChildDataTable());
ds.Relations.Add("rel", ds.Tables[0].Columns["ParentId"], ds.Tables[1].Columns["ParentId"], false);
Assert.Equal(false, ds.Tables.CanRemove(ds.Tables[0]));
Assert.Equal(false, ds.Tables.CanRemove(ds.Tables[1]));
}
public void ctor_DataColumn()
{
Exception tmpEx = new Exception();
var ds = new DataSet();
DataTable dtParent = DataProvider.CreateParentDataTable();
ds.Tables.Add(dtParent);
ds.EnforceConstraints = true;
UniqueConstraint uc = null;
// DataColumn.Unique - without constraint
Assert.Equal(false, dtParent.Columns[0].Unique);
uc = new UniqueConstraint(dtParent.Columns[0]);
// Ctor
Assert.Equal(false, uc == null);
// DataColumn.Unique - with constraint
Assert.Equal(false, dtParent.Columns[0].Unique);
// Ctor - add exisiting column
dtParent.Rows.Add(new object[] { 99, "str1", "str2" });
dtParent.Constraints.Add(uc);
Assert.Throws <ConstraintException>(() => dtParent.Rows.Add(new object[] { 99, "str1", "str2" }));
DataTable dtChild = DataProvider.CreateChildDataTable();
uc = new UniqueConstraint(dtChild.Columns[1]);
//Column[1] is not unique, will throw exception
// ArgumentException
Assert.Throws <ArgumentException>(() => dtChild.Constraints.Add(uc));
//reset the table
dtParent = DataProvider.CreateParentDataTable();
// DataColumn.Unique = true, will add UniqueConstraint
dtParent.Columns[0].Unique = true;
Assert.Equal(1, dtParent.Constraints.Count);
// Check the created UniqueConstraint
dtParent.Columns[0].Unique = true;
Assert.Equal(typeof(UniqueConstraint).FullName, dtParent.Constraints[0].GetType().FullName);
// add UniqueConstarint that don't belong to the table
Assert.Throws <ArgumentException>(() =>
{
dtParent.Constraints.Add(uc);
});
}
public void ctor_DclmDclm3()
{
Assert.Throws <ArgumentException>(() =>
{
var ds = new DataSet();
ds.Tables.Add(DataProvider.CreateParentDataTable());
ds.Tables.Add(DataProvider.CreateChildDataTable());
ds.Tables["Child"].Columns["ParentId"].Expression = "2";
ForeignKeyConstraint fc = new ForeignKeyConstraint(ds.Tables[0].Columns[0], ds.Tables[1].Columns[0]);
});
}
public void AddRange_C3()
{
AssertExtensions.Throws <ArgumentException>(null, () =>
{
var ds = new DataSet();
ds.Tables.Add(DataProvider.CreateParentDataTable());
ds.Tables.Add(DataProvider.CreateChildDataTable());
Constraint badConstraint = new UniqueConstraint(ds.Tables[0].Columns[0]);
ds.Tables[1].Constraints.AddRange(new Constraint[] { badConstraint }); //Cuz foreign key belongs to child table
});
}
public void Generate3()
{
DataTable tbl = DataProvider.CreateChildDataTable();
DataRow drParent = tbl.Rows[0];
drParent.Delete();
tbl.AcceptChanges();
Assert.Throws <VersionNotFoundException>(() =>
{
object obj = drParent[0, DataRowVersion.Original];
});
}
public void Expression_AggregateRelation()
{
DataTable parent = DataProvider.CreateParentDataTable();
DataTable child = DataProvider.CreateChildDataTable();
var ds = new DataSet();
ds.Tables.Add(parent);
ds.Tables.Add(child);
ds.Relations.Add("Relation1", parent.Columns[0], child.Columns[0], false);
//Create the computed columns
DataColumn dcComputedParent = new DataColumn("computedParent", typeof(double));
parent.Columns.Add(dcComputedParent);
dcComputedParent.Expression = "sum(child(Relation1)." + child.Columns[1].ColumnName + ")";
double preCalculatedExpression;
foreach (DataRow dr in parent.Rows)
{
object o = child.Compute("sum(" + child.Columns[1].ColumnName + ")",
parent.Columns[0].ColumnName + "=" + dr[0]);
if (o == DBNull.Value)
{
Assert.Equal(dr["computedParent"], o);
}
else
{
preCalculatedExpression = Convert.ToDouble(o);
Assert.Equal(dr["computedParent"], preCalculatedExpression);
}
}
DataColumn dcComputedChild = new DataColumn("computedChild", typeof(double));
child.Columns.Add(dcComputedChild);
dcComputedChild.Expression = "Parent." + parent.Columns[0].ColumnName;
int index = 0;
double val;
foreach (DataRow dr in child.Rows)
{
val = Convert.ToDouble(dr.GetParentRow("Relation1")[0]);
Assert.Equal(dr["computedChild"], val);
index++;
}
}
public void ctor_DclmDclm()
{
DataTable dtParent = DataProvider.CreateParentDataTable();
DataTable dtChild = DataProvider.CreateChildDataTable();
var ds = new DataSet();
ds.Tables.Add(dtChild);
ds.Tables.Add(dtParent);
ForeignKeyConstraint fc = null;
fc = new ForeignKeyConstraint(dtParent.Columns[0], dtChild.Columns[0]);
Assert.False(fc == null);
Assert.Equal(0, dtChild.Constraints.Count);
Assert.Equal(0, dtParent.Constraints.Count);
Assert.Equal(0, ds.Relations.Count);
dtChild.Constraints.Add(fc);
Assert.Equal(1, dtChild.Constraints.Count);
Assert.Equal(1, dtParent.Constraints.Count);
Assert.Equal(0, ds.Relations.Count);
Assert.Equal(typeof(UniqueConstraint), dtParent.Constraints[0].GetType());
Assert.Equal(typeof(ForeignKeyConstraint), dtChild.Constraints[0].GetType());
Assert.Equal(0, dtParent.PrimaryKey.Length);
dtChild.Constraints.Clear();
dtParent.Constraints.Clear();
ds.Relations.Add(new DataRelation("myRelation", dtParent.Columns[0], dtChild.Columns[0]));
Assert.Equal(1, dtChild.Constraints.Count);
Assert.Equal(1, dtParent.Constraints.Count);
Assert.Equal(typeof(UniqueConstraint), dtParent.Constraints[0].GetType());
Assert.Equal(typeof(ForeignKeyConstraint), dtChild.Constraints[0].GetType());
Assert.Equal(0, dtParent.PrimaryKey.Length);
}
public void ctor_NameParentColChildCol()
{
DataTable dtParent = DataProvider.CreateParentDataTable();
DataTable dtChild = DataProvider.CreateChildDataTable();
ForeignKeyConstraint fc = null;
fc = new ForeignKeyConstraint("myForeignKey", dtParent.Columns[0], dtChild.Columns[0]);
// Ctor
Assert.Equal(false, fc == null);
// Ctor - name
Assert.Equal("myForeignKey", fc.ConstraintName);
}
public void RelatedTable()
{
var ds = new DataSet();
DataTable dtParent = DataProvider.CreateParentDataTable();
DataTable dtChild = DataProvider.CreateChildDataTable();
ds.Tables.Add(dtParent);
ds.Tables.Add(dtChild);
ForeignKeyConstraint fc = null;
fc = new ForeignKeyConstraint(dtParent.Columns[0], dtChild.Columns[0]);
// RelatedTable
Assert.Equal(dtParent, fc.RelatedTable);
}
public void Generate()
{
DataTable dtParent;
dtParent = DataProvider.CreateParentDataTable();
Exception tmpEx = new Exception();
//------ check ForeignKeyConstraint ---------
DataTable dtChild = DataProvider.CreateChildDataTable();
var ds = new DataSet();
ds.Tables.Add(dtChild);
ds.Tables.Add(dtParent);
ds.Relations.Add(new DataRelation("myRelation", dtParent.Columns[0], dtChild.Columns[0], true));
//update to value which is not exists in Parent table
// InvalidConstraintException - update child row
Assert.Throws <InvalidConstraintException>(() =>
{
dtChild.Rows[0]["ParentId"] = 99;
});
//Add another relation to the same column of the existing relation in child table
// InvalidConstraintException - Add Relation Child
Assert.Throws <InvalidConstraintException>(() =>
{
ds.Relations.Add(new DataRelation("test", dtParent.Columns[2], dtChild.Columns[0], true));
});
//Attempt to clear rows from parent table
// InvalidConstraintException - RowsCollection.Clear
Assert.Throws <InvalidConstraintException>(() =>
{
dtParent.Rows.Clear();
});
//try to run commands on two different datasets
DataSet ds1 = new DataSet();
ds1.Tables.Add(dtParent.Copy());
// InvalidConstraintException - Add relation with two DataSets
Assert.Throws <InvalidConstraintException>(() =>
{
ds.Relations.Add(new DataRelation("myRelation", ds1.Tables[0].Columns[0], dtChild.Columns[0], true));
});
}
public new void ToString()
{
DataTable dtParent = DataProvider.CreateParentDataTable();
DataTable dtChild = DataProvider.CreateChildDataTable();
ForeignKeyConstraint fc = null;
fc = new ForeignKeyConstraint(dtParent.Columns[0], dtChild.Columns[0]);
// ToString - default
Assert.Equal(string.Empty, fc.ToString());
fc = new ForeignKeyConstraint("myConstraint", dtParent.Columns[0], dtChild.Columns[0]);
// Tostring - Constraint name
Assert.Equal("myConstraint", fc.ToString());
}
public void FindRows_ByKeys()
{
DataRowView[] dvArr = null;
//create the source datatable
DataTable dt = DataProvider.CreateChildDataTable();
//create the dataview for the table
DataView dv = new DataView(dt);
// FindRows ,no sort - exception
Assert.Throws <ArgumentException>(() =>
{
dvArr = dv.FindRows(new object[] { "3", "3-String1" });
});
dv.Sort = "String1,ChildId";
// Find = wrong sort, can not find
Assert.Throws <FormatException>(() =>
{
dvArr = dv.FindRows(new object[] { "3", "3-String1" });
});
dv.Sort = "ChildId,String1";
//get expected results
DataRow[] drExpected = dt.Select("ChildId=3 and String1='3-String1'");
// FindRows - check count
dvArr = dv.FindRows(new object[] { "3", "3-String1" });
Assert.Equal(drExpected.Length, dvArr.Length);
// FindRows - check data
//check that result is ok
bool Succeed = true;
for (int i = 0; i < dvArr.Length; i++)
{
Succeed = (int)dvArr[i]["ChildId"] == (int)drExpected[i]["ChildId"];
if (!Succeed)
{
break;
}
}
Assert.Equal(true, Succeed);
}
public void DataSet()
{
var ds = new DataSet();
DataTable dtChild = DataProvider.CreateChildDataTable();
DataTable dtParent = DataProvider.CreateParentDataTable();
ds.Tables.Add(dtParent);
ds.Tables.Add(dtChild);
DataRelation dRel;
dRel = new DataRelation("MyRelation", dtParent.Columns[0], dtChild.Columns[0]);
ds.Relations.Add(dRel);
// DataSet
Assert.Equal(ds, dRel.DataSet);
}
public void FindRows_ByKey()
{
DataRowView[] dvArr = null;
//create the source datatable
DataTable dt = DataProvider.CreateChildDataTable();
//create the dataview for the table
DataView dv = new DataView(dt);
// FindRows ,no sort - exception
AssertExtensions.Throws <ArgumentException>(null, () =>
{
dvArr = dv.FindRows(3);
});
dv.Sort = "String1";
// Find = wrong sort, can not find
dvArr = dv.FindRows(3);
Assert.Equal(0, dvArr.Length);
dv.Sort = "ChildId";
//get expected results
DataRow[] drExpected = dt.Select("ChildId=3");
// FindRows - check count
dvArr = dv.FindRows(3);
Assert.Equal(drExpected.Length, dvArr.Length);
// FindRows - check data
//check that result is ok
bool succeed = true;
for (int i = 0; i < dvArr.Length; i++)
{
succeed = (int)dvArr[i]["ChildId"] == (int)drExpected[i]["ChildId"];
if (!succeed)
{
break;
}
}
Assert.True(succeed);
}
public void Bug79233()
{
DataSet ds = new DataSet();
DataTable dtChild = DataProvider.CreateChildDataTable();
DataTable dtParent = DataProvider.CreateParentDataTable();
ds.Tables.Add(dtParent);
ds.Tables.Add(dtChild);
dtParent.Rows.Clear();
dtChild.Rows.Clear();
DataRelation dr = dtParent.ChildRelations.Add(dtParent.Columns[0], dtChild.Columns[0]);
Assert.Equal("Relation1", dr.RelationName);
dr = dtChild.ChildRelations.Add(dtChild.Columns[0], dtParent.Columns[0]);
Assert.Equal("Relation2", dr.RelationName);
}
public void Columns()
{
//int RowCount;
var ds = new DataSet();
DataTable dtParent = DataProvider.CreateParentDataTable();
DataTable dtChild = DataProvider.CreateChildDataTable();
ds.Tables.Add(dtParent);
ds.Tables.Add(dtChild);
ForeignKeyConstraint fc = null;
fc = new ForeignKeyConstraint(dtParent.Columns[0], dtChild.Columns[0]);
// Columns
Assert.Equal(dtChild.Columns[0], fc.Columns[0]);
// Columns count
Assert.Equal(1, fc.Columns.Length);
}
public void constraintName()
{
var ds = new DataSet();
DataTable dtParent = DataProvider.CreateParentDataTable();
DataTable dtChild = DataProvider.CreateChildDataTable();
ds.Tables.Add(dtParent);
ds.Tables.Add(dtChild);
ForeignKeyConstraint fc = null;
fc = new ForeignKeyConstraint(dtParent.Columns[0], dtChild.Columns[0]);
// default
Assert.Equal(string.Empty, fc.ConstraintName);
fc.ConstraintName = "myConstraint";
// set/get
Assert.Equal("myConstraint", fc.ConstraintName);
}
public void Nested()
{
var ds = new DataSet();
DataTable dtChild = DataProvider.CreateChildDataTable();
DataTable dtParent = DataProvider.CreateParentDataTable();
ds.Tables.Add(dtParent);
ds.Tables.Add(dtChild);
DataRelation dRel;
dRel = new DataRelation(null, dtParent.Columns[0], dtChild.Columns[0]);
ds.Relations.Add(dRel);
// Nested default
Assert.False(dRel.Nested);
dRel.Nested = true;
// Nested get/set
Assert.True(dRel.Nested);
}
