public void InstantiationAndProperties()
{
MidEqualsBinaryOperator ee = new MidEqualsBinaryOperator();
Assert.IsNull(ee.ValueExpression);
Assert.IsNull(ee.MessageExpression);
Assert.IsTrue(ee.StartIndex == 0);
Assert.IsTrue(ee.Length == 0);
BinaryConstantExpression bce = new BinaryConstantExpression("202030302020");
MessageExpression me = new MessageExpression(3);
ee = new MidEqualsBinaryOperator(me, bce, 0, 3);
Assert.IsTrue(ee.ValueExpression == bce);
Assert.IsTrue(ee.MessageExpression == me);
Assert.IsTrue(ee.StartIndex == 0);
Assert.IsTrue(ee.Length == 3);
ee.ValueExpression = null;
ee.MessageExpression = null;
ee.StartIndex = 1;
ee.Length = 2;
Assert.IsNull(ee.ValueExpression);
Assert.IsNull(ee.MessageExpression);
Assert.IsTrue(ee.StartIndex == 1);
Assert.IsTrue(ee.Length == 2);
try {
ee.ValueExpression = new StringConstantExpression("Test");
Assert.Fail();
}
catch (ArgumentException) {
}
try {
ee = new MidEqualsBinaryOperator(me, bce, -1, 3);
Assert.Fail();
}
catch (ArgumentException) {
}
try {
ee = new MidEqualsBinaryOperator(me, bce, 0, -1);
Assert.Fail();
}
catch (ArgumentException) {
}
try {
ee.StartIndex = -1;
Assert.Fail();
}
catch (ArgumentException) {
}
try {
ee.Length = -1;
Assert.Fail();
}
catch (ArgumentException) {
}
}
public void Evaluate()
{
ParserContext pc = new ParserContext(ParserContext.DefaultBufferSize);
FormatterContext fc = new FormatterContext(FormatterContext.DefaultBufferSize);
MidEqualsBinaryOperator ee = new MidEqualsBinaryOperator(
new MessageExpression(1), new BinaryConstantExpression(null), 0, 1);
Message msg = new Message();
msg.Fields.Add(new BinaryField(1, null));
// Both values are null.
pc.CurrentMessage = msg;
Assert.IsTrue(ee.EvaluateParse(ref pc));
fc.CurrentMessage = msg;
Assert.IsTrue(ee.EvaluateFormat(new StringField(3, "000000"), ref fc));
ee = new MidEqualsBinaryOperator(
new MessageExpression(1), new BinaryConstantExpression("1520253035404550"), 0, 1);
// Field value is null.
Assert.IsFalse(ee.EvaluateParse(ref pc));
Assert.IsFalse(ee.EvaluateFormat(new StringField(3, "000000"), ref fc));
ee = new MidEqualsBinaryOperator(
new MessageExpression(52), new BinaryConstantExpression(null), 0, 1);
msg = MessagesProvider.GetMessage();
// Constant is null.
pc.CurrentMessage = msg;
Assert.IsFalse(ee.EvaluateParse(ref pc));
fc.CurrentMessage = msg;
Assert.IsFalse(ee.EvaluateFormat(new StringField(3, "000000"), ref fc));
ee = new MidEqualsBinaryOperator(
new MessageExpression(52), new BinaryConstantExpression("152025303540"), 0, 1);
// Different lengths.
Assert.IsFalse(ee.EvaluateParse(ref pc));
Assert.IsFalse(ee.EvaluateFormat(new StringField(3, "000000"), ref fc));
ee = new MidEqualsBinaryOperator(
new MessageExpression(52), new BinaryConstantExpression("1520253035404551"), 0, 1);
// Different data.
Assert.IsFalse(ee.EvaluateParse(ref pc));
Assert.IsFalse(ee.EvaluateFormat(new StringField(3, "000000"), ref fc));
ee = new MidEqualsBinaryOperator(
new MessageExpression(52), new BinaryConstantExpression("1520253035"), 0, 5);
// Equals.
Assert.IsTrue(ee.EvaluateParse(ref pc));
Assert.IsTrue(ee.EvaluateFormat(new StringField(3, "000000"), ref fc));
// The start index of the set of bytes is greater than the field value length
ee = new MidEqualsBinaryOperator(
new MessageExpression(52), new BinaryConstantExpression("1520253035"), 8, 5);
try {
Assert.IsTrue(ee.EvaluateParse(ref pc));
Assert.Fail();
}
catch (ExpressionEvaluationException) {
}
try {
Assert.IsTrue(ee.EvaluateFormat(new StringField(3, "000000"), ref fc));
Assert.Fail();
}
catch (ExpressionEvaluationException) {
}
// There isn't enough data in the field value to get a subset of bytes
ee = new MidEqualsBinaryOperator(
new MessageExpression(52), new BinaryConstantExpression("1520253035"), 6, 5);
try {
Assert.IsTrue(ee.EvaluateParse(ref pc));
Assert.Fail();
}
catch (ExpressionEvaluationException) {
}
try {
Assert.IsTrue(ee.EvaluateFormat(new StringField(3, "000000"), ref fc));
Assert.Fail();
}
catch (ExpressionEvaluationException) {
}
}
