You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: extend_test.go
    path of file: ./repos/fx/docs/ex/parameter-objects
    
    the code of the file until where you have to start completion: // Copyright (c) 2022 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software an
    
func TestExtendParams(t *testing.T) {
	t.Run("absent", func(t *testing.T) {
		var got *Client
		app := fxtest.New(t,
			fx.Supply(
				ClientConfig{},
				new(http.Client),
			),
			fx.Provide(New),
			fx.Populate(&got),
		)
		app.RequireStart().RequireStop()

		assert.NotNil(t, got.log)
	})

	t.Run("present", func(t *testing.T) {
		var got *Client
		log := zap.NewExample()
		app := fxtest.New(t,
			fx.Supply(
				ClientConfig{},
				new(http.Client),
				log,
			),
			fx.Provide(New),
			fx.Populate(&got),
		)
		app.RequireStart().RequireStop()

		// Log must be what we provided.
		assert.True(t, got.log == log, "log did not match")
	})
}