Update README.md

Author: Felix Jendrusch

README.md

@@ -1,14 +1,17 @@
 # Dobby
 
-Dobby provides a few helpers for mocking and stubbing using expectations.
+Dobby provides a few helpers for mocking and stubbing.
 
-## Expectations
+## Matchers
 
-Expectations can be matched with values, serving as the fundamental building block for mocking and stubbing. There are many functions that help creating expectations for (equatable) types, including tuples, arrays, and dictionaries with equatable elements:
+Matchers can be matched with values, serving as the fundamental building block for mocking and stubbing. There are many functions that help creating matchers for (equatable) types, including optionals, tuples, arrays, and dictionaries with equatable elements:
 
 ```swift
 matches { $0 == value } // matches value
 any() // matches anything
+not(0) // matches anything but 0
+none() // matches Optional<T>.None (nil)
+some(1) // matches Optional<T>.Some(1)
 equals(1) // matches 1
 equals((1, 2)) // matches (1, 2)
 equals((1, 2, 3)) // matches (1, 2, 3)
@@ -18,28 +21,98 @@ equals([1, 2, 3]) // matches [1, 2, 3]
 equals([1: 1, 2: 2, 3: 3]) // matches [1: 1, 2: 2, 3: 3]
 ```
 
-Expectations may also be nested:
+Matchers may also be nested:
 
 ```swift
 matches((matches { $0 == 0 }, any(), 2)) // matches (0, _, 2)
+matches((not(equals(3)), some(any()))) // matches (not(3), _)
 matches([any(), equals(4)]) // matches [_, 4]
 matches(["key": matches { $0 == 5 }]) // matches ["key": 5]
 ```
 
 ## Mocks
 
-Mocks can be used to verify that all set up expectations are matched with the recorded interactions. Verification is performed in order and all expectations must match an interaction and vice versa:
+Mocks can be used to verify that all set up expectations have been fulfilled.
+
+### Strict mocks
+
+By default, mocks are strict and the order of expectations matters, meaning all interactions must be expected and occur in the order they were expected:
 
 ```swift
 let mock = Mock<[Int]>()
 mock.expect(matches([any(), matches { $0 > 0 }])) // expects [_, n > 0]
-mock.record([0, 1])
+mock.record([0, 1]) // succeeds
+mock.verify() // succeeds
+mock.record([1, 0]) // fails (fast)
+```
+
+The order of expectations may also be ignored:
+
+```swift
+let mock = Mock<[String: Int]>(ordered: false)
+mock.expect(matches([0, 1]))
+mock.expect(matches([1, 0]))
+mock.record([1, 0]) // succeeds
+mock.record([0, 1]) // succeeds
+mock.verify() // succeeds
+mock.record([0, 0]) // fails (fast)
+```
+
+### Nice mocks
+
+Nice mocks allow unexpected interactions while still respecting the order of expectations:
+
+```swift
+let mock = Mock<[Int?]>(strict: false)
+mock.expect(matches([some(0)]))
+mock.expect(matches([some(any())]))
+mock.record([nil]) // succeeds
+mock.verify() // fails
+mock.record([1]) // fails (fast)
+mock.record([0]) // succeeds
+mock.record([1]) // succeeds
 mock.verify() // succeeds
 ```
 
+Of course, nice mocks can ignore the order of expectations too:
+
+```swift
+let mock = Mock<[String: Int?]>(strict: false, ordered: false)
+mock.expect(matches(["zero": some(0)]))
+mock.expect(matches(["none": none()]))
+mock.record(["none": nil]) // succeeds
+mock.record(["zero": 0]) // succeeds
+mock.verify() // succeeds
+```
+
+#### Negative expectations
+
+In addition to normal expectations, nice mocks allow negative expectations to be set up:
+
+```swift
+let mock = Mock<Int>(strict: false)
+mock.reject(0)
+mock.record(0) // fails (fast)
+```
+
+### Verification with delay
+
+Verification may also be performed with a delay, allowing expectations to be fulfilled asynchronously:
+
+```swift
+let mock = Mock<Int>()
+mock.expect(1)
+
+dispatch_after(dispatch_time(DISPATCH_TIME_NOW, Int64(1.0 * Double(NSEC_PER_SEC))), dispatch_get_main_queue()) {
+    mock.record(1) // succeeds
+}
+
+mock.verifyWithDelay(2.0) // succeeds
+```
+
 ## Stubs
 
-Stubs, when invoked, return a value based on their set up behavior, or, if an interaction is unexpected, return `nil`. Behavior is matched in order, i.e., the function or return value associated with the first expectation that matches an interaction is invoked/returned:
+Stubs, when invoked, return a value based on their set up behavior, or, if an interaction is unexpected, return `nil`. Behavior is matched in order, i.e., the function or return value associated with the first matcher that matches an interaction is invoked/returned:
 
 ```swift
 let stub = Stub<(Int, Int), Int>()
@@ -75,14 +148,14 @@ class MyClassMock: MyClass {
   let myMethodMock = Mock<(String, String)>()
   let myMethodStub = Stub<(String, String), String>()
   override func myMethod(fst: String, _ snd: String) -> String {
-    myMethodMock.record(fst, snd)
+    myMethodMock.record((fst, snd))
     // Call super if the stub doesn't define any behavior for the interaction.
     return myMethodStub.invoke(fst, snd) ?? super.myMethod(fst, snd)
   }
 }
 ```
 
-The test subclass allows you to verify that all your set up expectations are matched with the recorded interactions and enables you to change its behavior on-the-fly:
+The test subclass allows you to verify that all your set up expectations are fulfilled and enables you to change its behavior on-the-fly:
 
 ```swift
 let myClassMock = MyClassMock()