public void GetFuncReturnsNullIfUnknownPattern()
{
// Arrange
Expression <Func <string[], int> > expr = model => model[0].Length; // array indexing is unknown to the fast-tracker
// Act
Func <string[], int> func = FastTrack <string[], int> .GetFunc(expr.Parameters[0], expr.Body);
// Assert
Assert.IsNull(func, "Unknown pattern should result in null return value.");
}
public void GetFunc_Constant()
{
// Arrange
Expression <Func <string, int> > expr = model => 2;
// Act
Func <string, int> func = FastTrack <string, int> .GetFunc(expr.Parameters[0], expr.Body);
int result = func("anything");
// Assert
Assert.AreEqual(2, result);
}
public void GetFunc_StaticMember()
{
// Arrange
Expression <Func <string, int> > expr = model => SomeStaticProperty;
// Act
Func <string, int> func = FastTrack <string, int> .GetFunc(expr.Parameters[0], expr.Body);
int result = func("anything");
// Assert
Assert.AreEqual(40, result);
}
public void GetFunc_InstanceMemberOnModel()
{
// Arrange
Expression <Func <string, int> > expr = model => model.Length;
int expected = "Hello, world".Length;
// Act
Func <string, int> func = FastTrack <string, int> .GetFunc(expr.Parameters[0], expr.Body);
int result = func("Hello, world");
// Assert
Assert.AreEqual(expected, result);
}
public void GetFunc_Identity()
{
// Arrange
Expression <Func <string, object> > expr = model => model;
// Act
Func <string, object> func = FastTrack <string, object> .GetFunc(expr.Parameters[0], expr.Body);
object result = func("test phrase");
// Assert
Assert.AreEqual("test phrase", result);
}