public void ReadNullValueLabels()
{
using (SpssDataDocument docRead = SpssDataDocument.Open(TestBase.GoodFilename, SpssFileAccess.Read))
{
SpssVariable var = docRead.Variables[3];
Assert.False(var.GetValueLabels().Any());
}
}
public void ReadLabel()
{
using (SpssDataDocument docRead = SpssDataDocument.Open(TestBase.GoodFilename, SpssFileAccess.Read))
{
SpssVariable var = docRead.Variables[0];
Assert.Equal("on butter", var.Label);
}
}
public void ReadNullLabel()
{
using (SpssDataDocument docRead = SpssDataDocument.Open(TestBase.GoodFilename, SpssFileAccess.Read))
{
SpssVariable var = docRead.Variables[3];
Assert.Equal(string.Empty, var.Label);
}
}
public void GetLongStringValueLabels()
{
using (SpssDataDocument docRead = SpssDataDocument.Open(TestBase.GoodFilename, SpssFileAccess.Read))
{
SpssStringVariable var = (SpssStringVariable)docRead.Variables["longStr"];
// long strings can never have value labels
Assert.Equal(0, var.ValueLabels.Count);
}
}
public void ReadDecimalPlaces()
{
using (SpssDataDocument docRead = SpssDataDocument.Open(TestBase.GoodFilename, SpssFileAccess.Read))
{
SpssNumericVariable var = docRead.Variables[0] as SpssNumericVariable;
Assert.NotNull(var); // First variable expected to be numeric.
Assert.Equal(2, var.WriteDecimal);
}
}
public void SetStringTooLong()
{
using (SpssDataDocument docAppend = SpssDataDocument.Open(TestBase.AppendFilename, SpssFileAccess.Append))
{
SpssStringVariable var = (SpssStringVariable)docAppend.Variables["charLabels"];
Debug.Assert(var.Length == 8);
SpssCase row = docAppend.Cases.New();
Assert.Throws <ArgumentOutOfRangeException>(() => row["charLabels"] = new string('a', var.Length + 1));
}
}
public void OpenExistingDocumentForAppend()
{
using (SpssDataDocument doc = SpssDataDocument.Open(TestBase.AppendFilename, SpssFileAccess.Append))
{
Assert.Equal(SpssFileAccess.Append, doc.AccessMode);
Assert.False(doc.IsClosed, "Newly opened document claims to be closed.");
Assert.Equal(TestBase.AppendFilename, doc.Filename);
Assert.False(doc.IsAuthoringDictionary, "Cannot be authoring dictionary when appending data.");
}
}
private static void CreateExampleDocument()
{
using (SpssDataDocument doc = SpssDataDocument.Create("example.sav")) {
CreateMetaData(doc);
CreateData(doc);
}
Console.WriteLine("Examine example.sav for the results.");
Console.WriteLine("SPSS file reading demo:");
using (SpssDataDocument doc = SpssDataDocument.Open(GetFileName(), SpssFileAccess.Read)) {
PrintMetaData(doc);
PrintData(doc);
}
}
public static void ReadSpssFile()
{
using (var doc = SpssDataDocument.Open("t.sav", SpssFileAccess.Append)) {
SpssNumericVariable accuracy = new SpssNumericVariable {
Name = $"Accuracy",
Label = $"Distance in pixels from target",
MeasurementLevel = MeasurementLevelCode.SPSS_MLVL_RAT
};
doc.Variables.Add(accuracy);
SpssStringVariable var = (SpssStringVariable)doc.Variables["someLabel"];
SpssCase row = doc.Cases.New();
row[$"Accuracy"] = new string('a', var.Length + 1);
}
}
public void SetMissingValueDateByNull()
{
int rowIndex;
using (SpssDataDocument docAppend = SpssDataDocument.Open(TestBase.AppendFilename, SpssFileAccess.Append))
{
SpssCase row = docAppend.Cases.New();
rowIndex = row.Position;
row["dateVar"] = null;
row.Commit();
}
using (SpssDataDocument docAppend = SpssDataDocument.Open(TestBase.AppendFilename, SpssFileAccess.Read))
{
SpssCase row = docAppend.Cases[rowIndex];
DateTime?val = (DateTime?)row["dateVar"];
Assert.False(val.HasValue);
}
}
public void SetMissingValueNumeric()
{
int rowIndex;
using (SpssDataDocument docAppend = SpssDataDocument.Open(TestBase.AppendFilename, SpssFileAccess.Append))
{
SpssCase row = docAppend.Cases.New();
rowIndex = row.Position;
row["num"] = double.NaN;
row.Commit();
}
using (SpssDataDocument docAppend = SpssDataDocument.Open(TestBase.AppendFilename, SpssFileAccess.Read))
{
SpssCase row = docAppend.Cases[rowIndex];
double val = (double)row["num"];
Assert.Equal(double.NaN, val);
}
}
public TestBase()
{
try
{
docRead = SpssDataDocument.Open(GoodFilename, SpssFileAccess.Read);
docAppend = SpssDataDocument.Open(AppendFilename, SpssFileAccess.Append);
if (File.Exists(DisposableFilename))
{
File.Delete(DisposableFilename);
}
docWrite = SpssDataDocument.Create(DisposableFilename);
}
catch
{
docRead?.Dispose();
docAppend?.Dispose();
docWrite?.Dispose();
throw;
}
}
