TYPEMOCK ISOLATOR API SUMMARY

1. FAKING OBJECTS

• Isolate.Fake.Instance()
  Create a fake instance of a class.
  Example:
  var fakePerson = Isolate.Fake.Instance();
• Isolate.Fake.AllInstances()
  Fake all current and future instances of a type.
  Example:
  var fakeLogger = Isolate.Fake.AllInstances();

1. ARRANGING BEHAVIOR

• Isolate.WhenCalled(() => method).WillReturn(value)
  Set a return value for a method.
  Example:
  Isolate.WhenCalled(() => fake.Add(2, 3)).WillReturn(5);
• Isolate.WhenCalled(() => method).CallOriginal()
  Call the original implementation.
  Example:
  Isolate.WhenCalled(() => fake.Method()).CallOriginal();

1. CONTROL BEHAVIOR BASED ON ARGUMENTS

• Isolate.WhenCalled(() => method).WithExactArguments(args…)
  Set behavior only for specific arguments.
  Example:
  Isolate.WhenCalled(() => fake.Add(2, 3)).WithExactArguments(2, 3).WillReturn(10);

1. VERIFYING CALLS

• Isolate.Verify.WasCalled(() => method)
  Verify that a method was called.
  Example:
  Isolate.Verify.WasCalled(() => fake.Add(2, 3));

1. FAKING LINQ AND COLLECTIONS

• Isolate.WhenCalled(() => query).WillReturnCollectionValuesOf(collection)
  Fake LINQ queries returning IQueryable.
  Example:
  var fakedList = new List { new Person(“John”), new Person(“Jane”) };
  Isolate.WhenCalled(() => repo.GetPeople()).WillReturnCollectionValuesOf(fakedList.AsQueryable());
• Faking Collections and Indexers:
  Fake specific collection behavior.
  Example:
  Isolate.WhenCalled(() => fakeList[0]).WillReturn(“Item”);
  Isolate.WhenCalled(() => fakeDictionary[“key”]).WillReturn(“Value”);

1. KEY NOTES

• Argument Matching: Use WithExactArguments for behavior control.
• LINQ Queries: Use WillReturnCollectionValuesOf for IQueryable.
• Future Instances: Use AllInstances.