// 3 InsertQuote
public static void InsertQuoteIntoDatabaseLogger(
Action<Quote> insertQuoteIntoDatabase,Action<string> log, Quote quote)
{
log($"Start InsertQuoteIntoDatabase with input {quote.Title} {quote.Body}");
insertQuoteIntoDatabase(quote);
log($"End InsertQuoteIntoDatabase");
}
private static void InsertQuoteIntoDatabase(Quote quote)
{
string connectionString =
@"Data Source=(LocalDB)\MSSQLLocalDB;AttachDbFilename=C:\Dev\Refactoring\Refactoring\Database1.mdf;Integrated Security=True";
using (var connection = new SqlConnection(connectionString))
{
var cmd = new SqlCommand("INSERT INTO Quotes (Title, Text) VALUES (@Title, @Quote)");
cmd.Connection = connection;
cmd.Parameters.AddWithValue("@Title", quote.Title);
cmd.Parameters.AddWithValue("@Quote", quote.Body);
connection.Open();
cmd.ExecuteNonQuery();
}
}
public void QuoteImporter_GivenMockFile_ShouldInsertIntoMockDatabase()
{
// 1. ReadFileListOfLines mock
string actualLineFromFile = "";
Func<IEnumerable<string>> readFileListOfLines = () =>
{
var listOfLines = new[] {"title, quote here"};
actualLineFromFile = listOfLines[0];
return listOfLines;
};
// 2. ParseLine mock
string actualLineSentToParseLine = "";
Func<string, Quote> parseLine = s =>
{
actualLineSentToParseLine = s;
var quote = new Quote {Title = "title2", Body = "quote here2"};
return quote;
};
// 3. InsertQuoteIntoDatabase mock
// using a closure
IList<Quote> actualQuotes = new List<Quote>();
Action<Quote> insertQuoteIntoDatabase = quote =>
{
actualQuotes.Add(quote);
};
// compose. Action is a delegate - doesn't return anything
Action run = () => ImporterFunctional.QuoteImporter(
readFileListOfLines, parseLine, insertQuoteIntoDatabase);
run();
// 1. Testing the ReadFileListOfLines mock was called
Assert.Equal("title, quote here", actualLineFromFile);
// 2. Testing the mock parser received the data from the ReadFileListOfLines mock
Assert.Equal("title, quote here", actualLineSentToParseLine);
// 3. Testing the mock database received the data from the ParseLine mock
Assert.Equal("title2", actualQuotes[0].Title);
Assert.Equal("quote here2", actualQuotes[0].Body);
}
