public void If_the_file_PendingMessages_does_not_exist_creates_it()
{
try
{
Assert.False(File.Exists("PendingMessages"));
var sut = new IncommingMessageRepository();
Assert.True(File.Exists("PendingMessages"));
}
finally
{
File.Delete("PendingMessages");
}
}
public void On_save_appends_a_new_line()
{
try
{
var sut = new IncommingMessageRepository();
List<string> newLines = new List<string>(StringExtension.RandomStrings(4, 20));
newLines.ForEach(s => sut.Save(s));
var fileLines = File.ReadAllLines("PendingMessages");
Assert.Equal(fileLines.Count(), newLines.Count);
for(int i =0; i < newLines.Count; i++) Assert.Equal(fileLines.ElementAt(i), newLines[i]);
}
finally
{
File.Delete("PendingMessages");
}
}
public void GetPending_returns_all_messages()
{
try
{
var sut = new IncommingMessageRepository();
List<string> newLines = new List<string>(StringExtension.RandomStrings(10, 20));
newLines.ForEach(s => sut.Save(s));
var fileLines = sut.GetPending().Value;
Assert.Equal(fileLines.Count(), newLines.Count);
for (int i = 0; i < newLines.Count; i++) Assert.Equal(fileLines.ElementAt(i), newLines[i]);
}
finally
{
File.Delete("PendingMessages");
}
}
public void On_Delete_remove_the_line_keeping_the_file_order()
{
try
{
var sut = new IncommingMessageRepository();
List<string> newLines = new List<string>(StringExtension.RandomStrings(10, 20));
newLines.ForEach(s => sut.Save(s));
var lineToDelete = newLines[new Random().Next(0, 9)];
sut.Delete(lineToDelete);
newLines.Remove(lineToDelete);
var fileLines = File.ReadAllLines("PendingMessages");
Assert.Equal(fileLines.Count(), newLines.Count);
for (int i = 0; i < newLines.Count; i++) Assert.Equal(fileLines.ElementAt(i), newLines[i]);
}
finally
{
File.Delete("PendingMessages");
}
}
