/// <summary>
/// Creates expectation for values to be null.
/// </summary>
/// <param name="builder"></param>
public static Expectation <T> BeNull <T>(this IExpectationComposer builder) where T : class
{
return(builder.ComposeSimple <T>(formatter => "null", x => x == null));
}
private static Expectation <string> Match(IExpectationComposer composer, string pattern, RegexOptions options, string format)
{
var regex = new Regex($"^{pattern}$", options);
return(composer.ComposeSimple(formatter => format, (string value) => value != null && regex.IsMatch(value)));
}
/// <summary>
/// Creates expectation for values to be null.
/// </summary>
/// <param name="builder"></param>
public static Expectation <object> BeNull(this IExpectationComposer builder)
{
return(builder.ComposeSimple <object>(formatter => "null", x => x == null));
}
/// <summary>
/// Creates expectation for strings to match regex pattern specified by <paramref name="pattern"/> parameter.
/// </summary>
/// <param name="composer">Composer</param>
/// <param name="pattern">Expected pattern</param>
public static Expectation <string> Match(this IExpectationComposer composer, string pattern)
{
return(Match(composer, pattern, RegexOptions.None, $"matches '{pattern}'"));
}
/// <summary>
/// Creates expectation for strings to match regex pattern specified by <paramref name="pattern"/> parameter, where character case is ignored.
/// </summary>
/// <param name="composer">Composer</param>
/// <param name="pattern">Expected pattern</param>
public static Expectation <string> MatchIgnoreCase(this IExpectationComposer composer, string pattern)
{
return(Match(composer, pattern, RegexOptions.IgnoreCase, $"matches '{pattern}' ignore case"));
}
/// <summary>
/// Creates expectation for strings to match pattern specified by <paramref name="pattern"/> parameter.
///
/// The <paramref name="pattern"/> may have special characters:
/// <list type="bullet">
/// <item><description>* - 0-more characters</description></item>
/// <item><description>? - 1 character</description></item>
/// <item><description># - 1 digit</description></item>
/// </list>
/// </summary>
/// <param name="composer">Composer</param>
/// <param name="pattern">Expected pattern</param>
public static Expectation <string> BeLike(this IExpectationComposer composer, string pattern)
{
return(BeLike(composer, pattern, RegexOptions.None, $"like '{pattern}'"));
}
/// <summary>
/// Creates expectation for strings to match pattern specified by <paramref name="pattern"/> parameter, where character case is ignored.
///
/// The <paramref name="pattern"/> may have special characters:
/// <list type="bullet">
/// <item><description>* - 0-more characters</description></item>
/// <item><description>? - 1 character</description></item>
/// <item><description># - 1 digit</description></item>
/// </list>
/// </summary>
/// <param name="composer">Composer</param>
/// <param name="pattern">Expected pattern</param>
public static Expectation <string> BeLikeIgnoreCase(this IExpectationComposer composer, string pattern)
{
return(BeLike(composer, pattern, RegexOptions.IgnoreCase, $"like '{pattern}' ignore case"));
}
/// <summary>
/// Creates expectation for collections to contain value specified by <paramref name="value"/> parameter.
/// </summary>
/// <typeparam name="T">Expectation value type</typeparam>
/// <param name="composer">Composer</param>
/// <param name="value">Expected value</param>
public static Expectation <IEnumerable <T> > Contain <T>(this IExpectationComposer composer, T value)
{
return(composer.ComposeSimple <IEnumerable <T> >(
formatter => $"contains '{formatter.FormatValue(value)}'",
x => x != null && x.Contains(value)));
}
/// <summary>
/// Creates expectation for collections with every item fulfilling expectation specified by <paramref name="expectationBuilder"/> parameter.
/// </summary>
/// <typeparam name="T">Expectation value type</typeparam>
/// <param name="composer">Composer</param>
/// <param name="expectationBuilder">Expectation builder</param>
public static Expectation <IEnumerable <T> > EveryItem <T>(this IExpectationComposer composer, Func <IExpectationComposer, IExpectation <T> > expectationBuilder)
{
return(composer.Compose(new EveryItemExpectation <T>(expectationBuilder.Invoke(Expect.To))));
}
/// <summary>
/// Creates expectation for values to be equal one of values in <paramref name="expectedCollection"/>.
/// </summary>
/// <typeparam name="T">Expectation value type</typeparam>
/// <param name="composer">Composer</param>
/// <param name="expectedCollection">Collection of expected values</param>
public static Expectation <T> BeIn <T>(this IExpectationComposer composer, params T[] expectedCollection)
{
return(composer.ComposeSimple <T>(
formatter => $"in '{formatter.FormatValue(expectedCollection)}'",
expectedCollection.Contains));
}
/// <summary>
/// Creates expectation for values to fulfill any expectation specified by <paramref name="expectationBuilder"/> parameter.
/// </summary>
/// <typeparam name="T">Expectation value type</typeparam>
/// <param name="composer">Composer</param>
/// <param name="expectationBuilder">Expectation builder</param>
public static Expectation <T> BeAnyTrue <T>(this IExpectationComposer composer, params Func <IExpectationComposer, IExpectation <T> >[] expectationBuilder)
{
return(composer.Compose(new OrExpectation <T>("any true ", expectationBuilder.Select(x => x.Invoke(Expect.To)).ToArray())));
}
/// <summary>
/// Creates expectation for values to be equal to <paramref name="expected"/> value.
/// </summary>
/// <typeparam name="T">Expectation value type</typeparam>
/// <param name="composer">Composer</param>
/// <param name="expected">Expected value</param>
public static Expectation <T> Equal <T>(this IExpectationComposer composer, T expected)
{
return(composer.ComposeSimple <T>(
formatter => $"equals '{formatter.FormatValue(expected)}'",
x => Equals(x, expected)));
}
/// <summary>
/// Creates expectation for collections to be empty.
/// </summary>
/// <param name="builder"></param>
public static Expectation <T> BeEmpty <T>(this IExpectationComposer builder) where T : IEnumerable
{
return(builder.ComposeSimple <T>(formatter => "empty", x => x != null && !x.Cast <object>().Any()));
}
/// <summary>
/// Helper method creating simple expectation based on <paramref name="predicateFn"/> and <paramref name="descriptionFn"/>.
/// </summary>
/// <typeparam name="T">Expectation value type</typeparam>
/// <param name="composer">Composer</param>
/// <param name="descriptionFn">Expectation description</param>
/// <param name="predicateFn">Expectation predicate</param>
public static Expectation <T> ComposeSimple <T>(this IExpectationComposer composer, Func <IValueFormattingService, string> descriptionFn, Func <T, bool> predicateFn)
{
return(composer.Compose(new SimpleExpectation <T>(descriptionFn, predicateFn)));
}