README

README.md

@@ -6,6 +6,20 @@ Generating Go mocks for testing.
 
 ### Features / Roadmap
 
+| Feature                                             | Status             |
+|-----------------------------------------------------|--------------------|
+| Creating mock file                                  | :white_check_mark: |
+| Choosing mock file location                         | :x:                |
+| Choosing mock file package name                     | :x:                |
+| Choosing mock struct name                           | :x:                |
+| Assigning build tag                                 | :soon:             |
+| Choosing assertion framework                        | :x:                |
+| Matching statically typed arguments                 | :white_check_mark: |
+| Returning statically typed outputs                  | :white_check_mark: |
+| Matching multiple invocations                       | :white_check_mark: |
+| Erroring if expectations were set but not triggered | :soon:             |
+| Erroring if expectations were not set but triggered | :white_check_mark: |
+
 ## Usage
 
 Place that generate directive at the top of file containing the interface you want to generate a mock for:
@@ -27,6 +41,7 @@ Use native `generate` go command:
 ```shell
 go generate ./...
 ```
+It will generate a mock file (`*_mock.go`) alongside your interface file. Please do not modify it.
 
 Let's say you have a service using the previous interface:
 ```go
@@ -89,6 +104,12 @@ Not matching the arguments, will generate that error:
         Wanted: 	hello
 ```
 
+Providing the wrong number of arguments, will generate that error:
+```go
+=== RUN   Test_WrongNumberOfArguments
+    manager.go:57: Wrong number of inputs
+```
+
 ## Installation
 
 At the root of the project, extend your `tools.go` file:

example/consumer.go

@@ -1,3 +1,5 @@
+//go:build example
+
 package playground
 
 import "context"

example/consumer_test.go

@@ -1,3 +1,5 @@
+//go:build example
+
 package playground_test
 
 import (
@@ -59,6 +61,32 @@ func Test_WrongArgumentsToTheMock(t *testing.T) {
 	}
 }
 
+func Test_WrongNumberOfArguments(t *testing.T) {
+	// given
+	ctx := context.TODO()
+
+	mock := playground.NewMockSomeInterface(t)
+	mock.MockManager.SetExpectations([]momock.MockCall{
+		{
+			Method: mock.Do,
+			In:     []any{ctx, "hello", "EXTRA HELLO"},
+			Out:    []any{nil, nil},
+		},
+	})
+
+	myStruct := playground.MyService{
+		TheInterface: mock,
+	}
+
+	// when
+	result := myStruct.UseInterface(ctx)
+
+	// then
+	if result != nil {
+		t.Fatalf("was expecting nil")
+	}
+}
+
 func Test_ForgotToSetExpectations(t *testing.T) {
 	// given
 	ctx := context.TODO()
@@ -77,3 +105,34 @@ func Test_ForgotToSetExpectations(t *testing.T) {
 		t.Fatalf("was expecting nil")
 	}
 }
+
+func Test_ExpectationsWereNotMet(t *testing.T) {
+	// given
+	ctx := context.TODO()
+
+	mock := playground.NewMockSomeInterface(t)
+	mock.MockManager.SetExpectations([]momock.MockCall{
+		{
+			Method: mock.Do,
+			In:     []any{ctx, "hello"},
+			Out:    []any{nil, nil},
+		},
+		{
+			Method: mock.Do,
+			In:     []any{ctx, "GOODNIGHT"},
+			Out:    []any{nil, nil},
+		},
+	})
+
+	myStruct := playground.MyService{
+		TheInterface: mock,
+	}
+
+	// when
+	result := myStruct.UseInterface(ctx)
+
+	// then
+	if result != nil {
+		t.Fatalf("was expecting nil")
+	}
+}

example/playground.go

@@ -1,3 +1,5 @@
+//go:build example
+
 //go:generate go run $GOPATH/src/momock/main.go
 
 package playground

example/playground_mock.go

@@ -1,3 +1,5 @@
+//go:build example
+
 package playground
 
 import (