public void uses_format_to_inject_guid_in_strings()
{
string str = Randomizer.String();
var ctx = new LogContext("{token} [x] {message}");
string result = ctx.Format(str);
string token = result.Substring(0, _guidLength);
Assert.DoesNotThrow(() => Guid.Parse(token));
string x = result.Substring(token.Length, 5);
Assert.Equal(" [x] ", x);
string msg = result.Substring(token.Length + x.Length);
Assert.Equal(str, msg);
}
public void uses_format_to_inject_timespan_in_strings()
{
string str = Randomizer.String();
var ctx = new LogContext("{elapsed} [x] {message}");
string result = ctx.Format(str);
string time = result.Substring(0, _timespanLength);
Assert.DoesNotThrow(() => TimeSpan.ParseExact(time, TimeSpanExtensions.FORMAT, null));
string x = result.Substring(time.Length, 5);
Assert.Equal(" [x] ", x);
string msg = result.Substring(time.Length + x.Length);
Assert.Equal(str, msg);
}
public void does_not_break_strings_that_contain_format_placeholders()
{
var ctx = new LogContext("prefix {message} middle {elapsed} | {token} suffix");
string formatInput = "abc {0}def {1} xyz";
string result = ctx.Format(formatInput).FormatWith("11", "22");
string expectedStart = "prefix abc 11def 22 xyz middle ";
Assert.True(result.StartsWith(expectedStart));
Assert.DoesNotThrow(() => TimeSpan.ParseExact(result.Substring(expectedStart.Length, _timespanLength), TimeSpanExtensions.FORMAT, null));
Assert.Equal(" | ", result.Substring(expectedStart.Length + _timespanLength, 3));
Assert.DoesNotThrow(() => Guid.Parse(result.Substring(expectedStart.Length + _timespanLength + 3, _guidLength)));
Assert.True(result.EndsWith(" suffix"));
}
