repository_test.go

type tweetRepositorySuite struct {
	// we need this to use the suite functionalities from testify
	suite.Suite
	// the funcionalities we need to test
	repository TweetRepository
	// some helper function to clean-up any used tables
	cleanupExecutor utils.TruncateTableExecutor
}

func (suite *tweetRepositorySuite) SetupSuite() {
	// this function runs once before all tests in the suite

	// some initialization setup
	configs := config.GetConfig()
	db := config.ConnectDB(configs)
	repository := InitializeTweetRepository(db)

	// assign the dependencies we need as the suite properties
	// we need this to run the tests
	suite.repository = repository
	suite.cleanupExecutor = utils.InitTruncateTableExecutor(db)
}

func (suite *tweetRepositorySuite) TearDownTest() {
	// clean-up the used table to be used for another session
	defer suite.cleanupExecutor.TruncateTable([]string{"tweets"})
}

func (suite *tweetRepositorySuite) TestCreateTweet_Positive() {
	// instantiate an entity to be used by the function we want to test
	tweet := entities.Tweet{
		Username: "username",
		Text: "text",
	}

	// real function we need to test
	err := suite.repository.CreateTweet(&tweet)
	// assertion for the result of our test
	suite.NoError(err, "no error when create tweet with valid input")
}