public void TestNullValue()
{
//Simulate post-#708 SELECTFEATURES output and test our expression engine reader
var bytes = Encoding.UTF8.GetBytes(Properties.Resources.SelectFeatureSample);
var reader = new XmlFeatureReader(new MemoryStream(bytes));
Assert.NotNull(reader.ClassDefinition);
Assert.AreEqual(3, reader.FieldCount);
Assert.AreEqual(3, reader.ClassDefinition.Properties.Count);
Assert.NotNull(reader.ClassDefinition.FindProperty("ID"));
Assert.NotNull(reader.ClassDefinition.FindProperty("Name"));
Assert.NotNull(reader.ClassDefinition.FindProperty("URL"));
var exprReader = new ExpressionFeatureReader(reader);
Assert.IsTrue(exprReader.ReadNext());
Assert.IsTrue(!exprReader.IsNull("URL"));
var url = exprReader["URL"];
var value = exprReader.Evaluate("NullValue(URL, 'http://www.snafu.com')");
Assert.NotNull(url);
Assert.NotNull(value);
Assert.AreEqual(url.ToString(), value.ToString());
Assert.IsTrue(exprReader.ReadNext());
var value2 = exprReader.Evaluate("NullValue(URL, 'http://www.foo.com')");
Assert.NotNull(value2);
Assert.AreEqual("http://www.foo.com", value2);
Assert.IsTrue(exprReader.ReadNext());
var value3 = exprReader.Evaluate("NullValue(URL, 'http://www.bar.com')");
Assert.NotNull(value3);
Assert.AreEqual("http://www.bar.com", value3);
Assert.IsFalse(exprReader.ReadNext());
exprReader.Close();
}
public void TestTranslate()
{
//Simulate post-#708 SELECTFEATURES output and test our expression engine reader
var bytes = Encoding.UTF8.GetBytes(Properties.Resources.SelectFeatureSample);
var reader = new XmlFeatureReader(new MemoryStream(bytes));
Assert.NotNull(reader.ClassDefinition);
Assert.AreEqual(3, reader.FieldCount);
Assert.AreEqual(3, reader.ClassDefinition.Properties.Count);
Assert.NotNull(reader.ClassDefinition.FindProperty("ID"));
Assert.NotNull(reader.ClassDefinition.FindProperty("Name"));
Assert.NotNull(reader.ClassDefinition.FindProperty("URL"));
var exprReader = new ExpressionFeatureReader(reader);
Assert.IsTrue(exprReader.ReadNext());
Assert.IsTrue(exprReader.ReadNext());
Assert.IsTrue(exprReader.ReadNext());
Assert.IsFalse(exprReader.ReadNext());
exprReader.Close();
}
public void TestMismatch()
{
//Simulate post-#708 SELECTFEATURES output and test our expression engine reader
var bytes = Encoding.UTF8.GetBytes(Properties.Resources.SelectFeatureSample);
var reader = new XmlFeatureReader(new MemoryStream(bytes));
Assert.NotNull(reader.ClassDefinition);
Assert.AreEqual(3, reader.FieldCount);
Assert.AreEqual(3, reader.ClassDefinition.Properties.Count);
Assert.NotNull(reader.ClassDefinition.FindProperty("ID"));
Assert.NotNull(reader.ClassDefinition.FindProperty("Name"));
Assert.NotNull(reader.ClassDefinition.FindProperty("URL"));
var exprReader = new ExpressionFeatureReader(reader);
Assert.IsTrue(exprReader.ReadNext());
Assert.Catch<ExpressionException>(() => exprReader.Evaluate<bool>("CurrentDate()"));
Assert.Catch<ExpressionException>(() => exprReader.Evaluate<bool>("'Foobar'"));
Assert.Catch<ExpressionException>(() => exprReader.Evaluate<bool>("Power(2, 4)"));
Assert.Catch<ExpressionException>(() => exprReader.Evaluate<string>("Foobar"));
var dt = exprReader.Evaluate<DateTime>("CurrentDate()");
var str = exprReader.Evaluate<string>("'Foobar'");
var num = exprReader.Evaluate<int>("Power(2, 4)");
var num2 = exprReader.Evaluate<float>("Power(2, 4)");
exprReader.Close();
}
public void TestMathPower()
{
//Simulate post-#708 SELECTFEATURES output and test our expression engine reader
var bytes = Encoding.UTF8.GetBytes(Properties.Resources.SelectFeatureSample);
var reader = new XmlFeatureReader(new MemoryStream(bytes));
Assert.NotNull(reader.ClassDefinition);
Assert.AreEqual(3, reader.FieldCount);
Assert.AreEqual(3, reader.ClassDefinition.Properties.Count);
Assert.NotNull(reader.ClassDefinition.FindProperty("ID"));
Assert.NotNull(reader.ClassDefinition.FindProperty("Name"));
Assert.NotNull(reader.ClassDefinition.FindProperty("URL"));
var exprReader = new ExpressionFeatureReader(reader);
Assert.IsTrue(exprReader.ReadNext());
var orig = (int)exprReader["ID"];
var value = Convert.ToDouble(exprReader.Evaluate("Power(ID, 2)"));
Assert.AreEqual(Math.Pow(orig, 2), value);
Assert.IsTrue(exprReader.ReadNext());
var orig2 = (int)exprReader["ID"];
var value2 = Convert.ToDouble(exprReader.Evaluate("Power(ID, 4)"));
Assert.AreEqual(Math.Pow(orig2, 4), value2);
Assert.IsTrue(exprReader.ReadNext());
var orig3 = (int)exprReader["ID"];
var value3 = Convert.ToDouble(exprReader.Evaluate("Power(ID, 8)"));
Assert.AreEqual(Math.Pow(orig3, 8), value3);
Assert.IsFalse(exprReader.ReadNext());
exprReader.Close();
}
public void TestConcat()
{
//Test nested and variadic forms of Concat()
//Simulate post-#708 SELECTFEATURES output and test our expression engine reader
var bytes = Encoding.UTF8.GetBytes(Properties.Resources.SelectFeatureSample);
var reader = new XmlFeatureReader(new MemoryStream(bytes));
Assert.NotNull(reader.ClassDefinition);
Assert.AreEqual(3, reader.FieldCount);
Assert.AreEqual(3, reader.ClassDefinition.Properties.Count);
Assert.NotNull(reader.ClassDefinition.FindProperty("ID"));
Assert.NotNull(reader.ClassDefinition.FindProperty("Name"));
Assert.NotNull(reader.ClassDefinition.FindProperty("URL"));
var exprReader = new ExpressionFeatureReader(reader);
Assert.IsTrue(exprReader.ReadNext());
var orig = exprReader["Name"].ToString();
var value = exprReader.Evaluate("Concat(Concat(Name, 'Foo'), 'Bar')");
var valueV = exprReader.Evaluate("Concat(Name, 'Foo', 'Bar', 'Snafu')");
Assert.AreEqual(orig + "FooBar", value);
Assert.AreEqual(orig + "FooBarSnafu", valueV);
Assert.IsTrue(exprReader.ReadNext());
var orig2 = exprReader["Name"].ToString();
var value2 = exprReader.Evaluate("Concat(Concat(Name, 'Foo'), 'Bar')");
var valueV2 = exprReader.Evaluate("Concat(Name, 'Foo', 'Bar', 'Snafu')");
Assert.AreEqual(orig2 + "FooBar", value2);
Assert.AreEqual(orig2 + "FooBarSnafu", valueV2);
Assert.IsTrue(exprReader.ReadNext());
var value3 = exprReader.Evaluate("Concat(Concat(Name, 'Foo'), 'Bar')");
var valueV3 = exprReader.Evaluate("Concat(Name, 'Foo', 'Bar', 'Snafu')");
Assert.AreEqual("FooBar", value3);
Assert.AreEqual("FooBarSnafu", valueV3);
Assert.IsFalse(exprReader.ReadNext());
exprReader.Close();
}
public void TestMathAsin()
{
//The numbers in this sample are way too large for Asin() so trim them down to size
//Simulate post-#708 SELECTFEATURES output and test our expression engine reader
var bytes = Encoding.UTF8.GetBytes(Properties.Resources.SelectFeatureSample);
var reader = new XmlFeatureReader(new MemoryStream(bytes));
Assert.NotNull(reader.ClassDefinition);
Assert.AreEqual(3, reader.FieldCount);
Assert.AreEqual(3, reader.ClassDefinition.Properties.Count);
Assert.NotNull(reader.ClassDefinition.FindProperty("ID"));
Assert.NotNull(reader.ClassDefinition.FindProperty("Name"));
Assert.NotNull(reader.ClassDefinition.FindProperty("URL"));
var exprReader = new ExpressionFeatureReader(reader);
Assert.IsTrue(exprReader.ReadNext());
var orig = (int)exprReader["ID"];
var value = Convert.ToDouble(exprReader.Evaluate("Asin(ID * 0.1)"));
Assert.AreEqual(Math.Asin(orig * 0.1), value);
Assert.IsTrue(exprReader.ReadNext());
var orig2 = (int)exprReader["ID"];
var value2 = Convert.ToDouble(exprReader.Evaluate("Asin(ID * 0.1)"));
Assert.AreEqual(Math.Asin(orig2 * 0.1), value2);
Assert.IsTrue(exprReader.ReadNext());
var orig3 = (int)exprReader["ID"];
var value3 = Convert.ToDouble(exprReader.Evaluate("Asin(ID * 0.1)"));
Assert.AreEqual(Math.Asin(orig3 * 0.1), value3);
Assert.IsFalse(exprReader.ReadNext());
exprReader.Close();
}
public void TestCurrentDateAndAddMonths()
{
//TODO: Know how to calculate diffs between 2 DateTimes in months?
var dtNow = DateTime.Now;
//Simulate post-#708 SELECTFEATURES output and test our expression engine reader
var bytes = Encoding.UTF8.GetBytes(Properties.Resources.SelectFeatureSample);
var reader = new XmlFeatureReader(new MemoryStream(bytes));
Assert.NotNull(reader.ClassDefinition);
Assert.AreEqual(3, reader.FieldCount);
Assert.AreEqual(3, reader.ClassDefinition.Properties.Count);
Assert.NotNull(reader.ClassDefinition.FindProperty("ID"));
Assert.NotNull(reader.ClassDefinition.FindProperty("Name"));
Assert.NotNull(reader.ClassDefinition.FindProperty("URL"));
var exprReader = new ExpressionFeatureReader(reader);
Assert.IsTrue(exprReader.ReadNext());
Thread.Sleep(50);
var dt1 = exprReader.Evaluate("CurrentDate()");
Assert.NotNull(dt1);
Trace.WriteLine("dt1: " + dt1.ToString());
Assert.AreEqual(typeof(DateTime), dt1.GetType());
Assert.IsTrue((DateTime)dt1 > dtNow);
var fut1 = exprReader.Evaluate("AddMonths(CurrentDate(), 3)");
Assert.NotNull(fut1);
Trace.WriteLine("fut1: " + fut1.ToString());
var past1 = exprReader.Evaluate("AddMonths(CurrentDate(), -3)");
Assert.NotNull(past1);
Trace.WriteLine("past1: " + past1.ToString());
Thread.Sleep(50);
Assert.IsTrue(exprReader.ReadNext());
var dt2 = exprReader.Evaluate("CurrentDate()");
Assert.NotNull(dt2);
Trace.WriteLine("dt2: " + dt2.ToString());
Assert.AreEqual(typeof(DateTime), dt2.GetType());
Assert.IsTrue((DateTime)dt2 > (DateTime)dt1);
var fut2 = exprReader.Evaluate("AddMonths(CurrentDate(), 3)");
Assert.NotNull(fut2);
Trace.WriteLine("fut2: " + fut2.ToString());
var past2 = exprReader.Evaluate("AddMonths(CurrentDate(), -3)");
Assert.NotNull(past2);
Trace.WriteLine("past2: " + past2.ToString());
Thread.Sleep(50);
Assert.IsTrue(exprReader.ReadNext());
var dt3 = exprReader.Evaluate("CurrentDate()");
Assert.NotNull(dt3);
Trace.WriteLine("dt2: " + dt3.ToString());
Assert.AreEqual(typeof(DateTime), dt3.GetType());
Assert.IsTrue((DateTime)dt3 > (DateTime)dt2);
var fut3 = exprReader.Evaluate("AddMonths(CurrentDate(), 3)");
Assert.NotNull(fut3);
Trace.WriteLine("fut3: " + fut3.ToString());
var past3 = exprReader.Evaluate("AddMonths(CurrentDate(), -3)");
Assert.NotNull(past3);
Trace.WriteLine("past3: " + past3.ToString());
Thread.Sleep(50);
Assert.IsFalse(exprReader.ReadNext()); //end of stream
exprReader.Close();
}