/// <summary>
/// Asserts that the number of items in the collection matches the supplied expected
/// amount.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="that"></param>
/// <param name="expectedCount"></param>
/// <param name="message"></param>
public static void HaveCount <T>(this EventualAssertions <IEnumerable <T> > that, int expectedCount, string message = null)
{
if (IsTrue(that, values => values != null && values.Count() == expectedCount, that.MaximumWaitTime, out var finalValue))
{
return;
}
var completeMessage = new StringBuilder();
completeMessage.AppendFormat("Expected collection to contain {0} item(s), but found found ", expectedCount);
completeMessage.AppendFormatCount(finalValue);
completeMessage.AppendWaitTime(that.MaximumWaitTime);
completeMessage.AppendMessage(message);
completeMessage.Append(".");
throw new AssertionException(completeMessage.ToString());
}
/// <summary>
/// Asserts that the collection does not contain any items.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="that"></param>
/// <param name="message"></param>
public static void BeEmpty <T>(this EventualAssertions <IEnumerable <T> > that, string message = null)
{
if (IsTrue(that, values => values != null && !values.Any(), that.MaximumWaitTime, out var finalValue))
{
return;
}
var completeMessage = new StringBuilder();
completeMessage.Append("Expected empty collection, but found found ");
completeMessage.AppendFormatEnumeration(finalValue);
completeMessage.AppendWaitTime(that.MaximumWaitTime);
completeMessage.AppendMessage(message);
completeMessage.Append(".");
throw new AssertionException(completeMessage.ToString());
}
/// <summary>
/// Asserts that the current object has not been initialized yet.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="that"></param>
/// <param name="message"></param>
public static void BeNull <T>(this EventualAssertions <T?> that, string message = null) where T : struct
{
if (IsTrue(that, value => value == null, that.MaximumWaitTime, out var finalValue))
{
return;
}
var completeMessage = new StringBuilder();
completeMessage.Append("Expected ");
completeMessage.AppendValue(finalValue);
completeMessage.Append(" to not have a value");
completeMessage.AppendWaitTime(that.MaximumWaitTime);
completeMessage.AppendMessage(message);
completeMessage.Append(".");
throw new AssertionException(completeMessage.ToString());
}
private static bool IsTrue <T>(this EventualAssertions <T> that,
Predicate <T> predicate,
TimeSpan maximumWaitTime,
out T finalValue)
{
var started = DateTime.UtcNow;
do
{
finalValue = that.GetValue();
if (predicate(finalValue))
{
return(true);
}
Thread.Sleep(EventualAssertions <int> .DefaultSleepTime);
} while (DateTime.UtcNow - started < maximumWaitTime);
return(false);
}
/// <summary>
/// Asserts that the numeric value is greater than or equal to the specified expected
/// value.
/// </summary>
/// <param name="that"></param>
/// <param name="threshold"></param>
/// <param name="message"></param>
public static void BeGreaterOrEqualTo(this EventualAssertions <int> that,
int threshold,
string message = null)
{
if (IsTrue(that, value => value >= threshold, that.MaximumWaitTime, out var finalValue))
{
return;
}
var completeMessage = new StringBuilder();
completeMessage.AppendFormat("Expected {0} to be greater or equal to {1}",
finalValue,
threshold);
completeMessage.AppendWaitTime(that.MaximumWaitTime);
completeMessage.AppendMessage(message);
completeMessage.Append(".");
throw new AssertionException(completeMessage.ToString());
}
/// <summary>
/// Asserts that an object does not equal another object using its System.Object.Equals(System.Object)
/// method.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="that"></param>
/// <param name="expectedValue"></param>
/// <param name="message"></param>
public static void NotBe <T>(this EventualAssertions <T> that,
T expectedValue,
string message = null)
{
if (IsTrue(that, value => !Equals(value, expectedValue), that.MaximumWaitTime, out var finalValue))
{
return;
}
var completeMessage = new StringBuilder();
completeMessage.Append("Expected ");
AppendValue(completeMessage, expectedValue);
completeMessage.Append(" not to be equal to ");
AppendValue(completeMessage, finalValue);
completeMessage.AppendWaitTime(that.MaximumWaitTime);
completeMessage.AppendMessage(message);
completeMessage.Append(".");
throw new AssertionException(completeMessage.ToString());
}
/// <summary>
/// Expects the current collection to contain all the same elements in the same order
/// as the collection identified by elements. Elements are compared using their T.Equals(T)
/// method.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="that"></param>
/// <param name="expectedEnumeration"></param>
/// <param name="message"></param>
public static void Equal <T>(this EventualAssertions <IEnumerable <T> > that,
IEnumerable <T> expectedEnumeration,
string message = null)
{
var expectedCopy = expectedEnumeration.ToList();
if (IsTrue(that, values =>
{
var copy = values?.ToList();
if (copy?.Count != expectedCopy.Count)
{
return(false);
}
for (int i = 0; i < copy.Count; ++i)
{
if (!Equals(copy[i], expectedCopy[i]))
{
return(false);
}
}
return(true);
}, that.MaximumWaitTime, out var finalValue))
{
return;
}
var completeMessage = new StringBuilder();
completeMessage.Append("Expected collection equal to ");
AppendValue(completeMessage, expectedCopy);
completeMessage.Append(", but found found ");
completeMessage.AppendFormatEnumeration(finalValue);
completeMessage.AppendWaitTime(that.MaximumWaitTime);
completeMessage.AppendMessage(message);
completeMessage.Append(".");
throw new AssertionException(completeMessage.ToString());
}
/// <summary>
/// Asserts that the current object has been initialized already.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="that"></param>
/// <param name="message"></param>
public static void HaveValue <T>(this EventualAssertions <T?> that, string message = null) where T : struct
{
that.NotBeNull(message);
}
/// <summary>
/// Asserts that the current object has been initialized already.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="that"></param>
/// <param name="message"></param>
public static void NotBeNull <T>(this EventualAssertions <T> that, string message = null) where T : class
{
that.NotBe(null, message);
}
/// <summary>
/// Asserts that the value is false.
/// </summary>
/// <param name="that"></param>
/// <param name="message"></param>
public static void BeFalse(this EventualAssertions <bool> that, string message = null)
{
that.Be(expectedValue: false, message: message);
}