// Method call with argument
public void MethodCallWithArgument()
{
NodeExpressionPair node = ExpressionLeafs.MethodCallNoParam;
string methodName = "MethodCallWithArgument";
TestExpression expr = new TestExpression()
{
ResultType = typeof(int),
ExpectedNode = new InvokeMethod <int>()
{
MethodName = methodName,
TargetType = typeof(DummyHelper),
Parameters =
{
new InArgument <int>(
(InvokeMethod <int>)node.GetLeafNode())
{
EvaluationOrder = 1
}
}
},
ExpressionTree = Expression.Call(
typeof(DummyHelper).GetMethod(methodName, BindingFlags.Public | BindingFlags.Static),
node.LeafExpression)
};
ExpressionTestRuntime.ValidateExpressionXaml <int>(expr);
ExpressionTestRuntime.ValidateExecutionResult(expr, null);
}
// Call generic method
public void GenericMethodCall()
{
NodeExpressionPair node = ExpressionLeafs.ConstStringValue;
string methodName = "GenericMethod";
MethodInfo genericMethodHanlder = typeof(DummyHelper).GetMethod(methodName, BindingFlags.Public | BindingFlags.Static);
MethodInfo specializedGenericMethodHandler = genericMethodHanlder.MakeGenericMethod(typeof(string));
TestExpression expr = new TestExpression()
{
ResultType = typeof(string),
ExpectedNode = new InvokeMethod <string>()
{
MethodName = methodName,
TargetType = typeof(DummyHelper),
GenericTypeArguments =
{
typeof(string)
},
Parameters =
{
new InArgument <string>()
{
Expression = (Activity <string>)node.GetLeafNode(),
EvaluationOrder = 1
}
}
},
ExpressionTree = Expression.Call(
specializedGenericMethodHandler, node.LeafExpression)
};
ExpressionTestRuntime.ValidateExpressionXaml <string>(expr);
ExpressionTestRuntime.ValidateExecutionResult(expr, null);
}
private IEnumerable EnumerateTest <T>(int level, int maxLevel)
{
// for non-leaf node, it could be a binary expression or one of the pre-defined node
if (level < maxLevel)
{
foreach (BinaryOperator op in _operators)
{
TestBinaryExpression binaryExpression = new TestBinaryExpression();
binaryExpression.ResultType = typeof(T);
binaryExpression.Operator = op;
foreach (TestExpression left in EnumerateTest <T>(level + 1, maxLevel))
{
left.ResultType = typeof(T);
binaryExpression.Left = left;
foreach (TestExpression right in EnumerateTest <T>(level + 1, maxLevel))
{
right.ResultType = typeof(T);
binaryExpression.Right = right;
yield return(binaryExpression);
}
}
}
}
// leaf node return const node only
if (level == maxLevel)
{
NodeExpressionPair leaf = LeafHelper.GetConstNode(typeof(T));
yield return(new TestExpression()
{
ExpectedNode = leaf.GetLeafNode(),
ExpressionTree = leaf.LeafExpression
});
}
// root can't be leaf node
else if (level != 0)
{
foreach (NodeExpressionPair leaf in _leafNode)
{
Exception expectedException = null;
object expectedNode = null;
try
{
expectedNode = leaf.GetLeafNode();
}
catch (Exception ex)
{
expectedException = ex;
}
TestExpression te = new TestExpression()
{
ExpectedConversionException = expectedException,
ExpectedNode = expectedNode,
ExpressionTree = leaf.LeafExpression
};
yield return(te);
}
}
}
// Unsupported binary operator
public void UnsupportedBinaryOperator()
{
NodeExpressionPair node = ExpressionLeafs.UnsupportedBinaryOperator;
Expression <Func <ActivityContext, int> > lambdaExpression = Expression.Lambda <Func <ActivityContext, int> >((Expression)node.LeafExpression, Expression.Parameter(typeof(ActivityContext), "context"));
NotSupportedException expectedException = new NotSupportedException(
string.Format(ErrorStrings.UnsupportedExpressionType, ExpressionType.Coalesce));
ExpressionTestRuntime.Convert(lambdaExpression, expectedException);
}
// Static property
public void StaticProperty()
{
NodeExpressionPair node = ExpressionLeafs.StaticIntProperty;
TestExpression expr = new TestExpression()
{
ResultType = typeof(int),
ExpectedNode = node.GetLeafNode(),
ExpressionTree = node.LeafExpression
};
ExpressionTestRuntime.ValidateExpressionXaml <int>(expr);
ExpressionTestRuntime.ValidateExecutionResult(expr, null);
}
// Constant value
public void ConstantValue()
{
NodeExpressionPair node = ExpressionLeafs.ConstIntValue;
TestExpression expr = new TestExpression()
{
ResultType = typeof(int),
ExpectedNode = node.GetLeafNode(),
ExpressionTree = node.LeafExpression
};
ExpressionTestRuntime.ValidateExpressionXaml <int>(expr);
ExpressionTestRuntime.ValidateExecutionResult(expr, null);
}
// Method call without argument
public void MethodCallWithoutArgument()
{
NodeExpressionPair node = ExpressionLeafs.MethodCallNoParam;
TestExpression expr = new TestExpression()
{
ResultType = typeof(int),
ExpectedNode = node.GetLeafNode(),
ExpressionTree = node.LeafExpression
};
ExpressionTestRuntime.ValidateExpressionXaml <int>(expr);
ExpressionTestRuntime.ValidateExecutionResult(expr, null);
}
private IEnumerable EnumerateTest <T>(int level, int maxLevel)
{
// for non-leaf node, it could be a unary expression or one of the pre-defined node
if (level < maxLevel)
{
foreach (UnaryOperator op in _operators)
{
TestUnaryExpression expression = new TestUnaryExpression
{
ResultType = typeof(T)
};
expression.ResultType = typeof(T);
expression.Operator = op;
foreach (TestExpression operand in EnumerateTest <T>(level + 1, maxLevel))
{
operand.ResultType = typeof(T);
expression.Operand = operand;
yield return(expression);
}
}
}
// leaf node return const node only
if (level == maxLevel)
{
NodeExpressionPair leaf = LeafHelper.GetConstNode(typeof(T));
yield return(new TestExpression()
{
ExpectedNode = leaf.GetLeafNode(),
ExpressionTree = leaf.LeafExpression
});
}
// root can't be leaf node
else if (level != 0)
{
foreach (NodeExpressionPair leaf in _leafNode)
{
TestExpression te = new TestExpression()
{
ExpectedNode = leaf.GetLeafNode(),
ExpressionTree = leaf.LeafExpression
};
yield return(te);
}
}
}
// Static delegate call
public void StaticDelegateCall()
{
NodeExpressionPair node = ExpressionLeafs.MethodCallNoParam;
string delegateName = "StaticDelegate";
TestExpression expr = new TestExpression()
{
ResultType = typeof(int),
ExpectedNode = new InvokeMethod <int>()
{
MethodName = "Invoke",
Parameters =
{
new InArgument <int>()
{
Expression = (Activity <int>)node.GetLeafNode(),
EvaluationOrder = 1,
}
},
TargetObject = new InArgument <Func <int, int> >()
{
Expression = new FieldValue <DummyHelper, Func <int, int> >()
{
FieldName = delegateName,
Operand = null,
},
EvaluationOrder = 0
}
},
ExpressionTree = Expression.Invoke(
Expression.Field(
null, typeof(DummyHelper).GetField(delegateName, BindingFlags.Public | BindingFlags.Static)),
node.LeafExpression)
};
ExpressionTestRuntime.ValidateExpressionXaml <int>(expr);
ExpressionTestRuntime.ValidateExecutionResult(expr, null);
}
// Convert cast expression
public void ConvertCast()
{
NodeExpressionPair node = ExpressionLeafs.StaticIntField;
Expression linq = Expression.Convert(node.LeafExpression, typeof(double));
Activity <double> expectedActivity = new Cast <int, double>()
{
Checked = false,
Operand = new InArgument <int>(
(Activity <int>)node.GetLeafNode())
};
TestExpression expr = new TestExpression()
{
ResultType = typeof(double),
ExpectedNode = expectedActivity,
ExpressionTree = linq
};
ExpressionTestRuntime.ValidateExpressionXaml <double>(expr);
ExpressionTestRuntime.ValidateExecutionResult(expr, null);
}