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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,109 @@ | ||
| using System; | ||
| using NUnit.Framework; | ||
| using NExpect; | ||
| using NExpect.Exceptions; | ||
| using static NExpect.Expectations; | ||
| using static PeanutButter.RandomGenerators.RandomValueGen; | ||
|
|
||
| namespace NExpect.Tests | ||
| { | ||
| [TestFixture] | ||
| public class TestEnumMatchers | ||
| { | ||
| [Test] | ||
| public void ShouldBeAbleToAssertEnumValueHasFlag() | ||
| { | ||
| // Arrange | ||
| var value = Numbers.One | Numbers.Three; | ||
| // Act | ||
| Assert.That( | ||
| () => | ||
| { | ||
| Expect(value) | ||
| .To.Have.Flag(Numbers.One) | ||
| .And | ||
| .To.Have.Flag(Numbers.Three); | ||
| Expect(value) | ||
| .Not.To.Have.Flag(Numbers.Two) | ||
| .And | ||
| .Not.To.Have.Flag(Numbers.Four); | ||
| }, | ||
| Throws.Nothing | ||
| ); | ||
|
|
||
| Assert.That( | ||
| () => | ||
| { | ||
| Expect(value) | ||
| .To.Have.Flag(Numbers.Two); | ||
| }, | ||
| Throws.Exception.InstanceOf<UnmetExpectationException>() | ||
| .With.Message.Contains( | ||
| $"Expected ({value}) to have flag ({Numbers.Two})" | ||
| ) | ||
| ); | ||
|
|
||
| Assert.That( | ||
| () => | ||
| { | ||
| Expect(value) | ||
| .Not.To.Have.Flag(Numbers.One); | ||
| }, | ||
| Throws.Exception.InstanceOf<UnmetExpectationException>() | ||
| .With.Message.Contains( | ||
| $"Expected ({value}) not to have flag ({Numbers.One})" | ||
| ) | ||
| ); | ||
|
|
||
| // Assert | ||
| } | ||
|
|
||
| [Test] | ||
| public void ShouldAlwaysFailForNonFlagsEnums() | ||
| { | ||
| // Arrange | ||
| var value = NotFlags.Strange; | ||
| // Act | ||
| Assert.That( | ||
| () => | ||
| { | ||
| Expect(value) | ||
| .To.Have.Flag(NotFlags.Strange); | ||
| }, | ||
| Throws.Exception.InstanceOf<UnmetExpectationException>() | ||
| .With.Message.Contains("not decorated with [Flags]") | ||
| ); | ||
| Assert.That( | ||
| () => | ||
| { | ||
| Expect(value) | ||
| .Not.To.Have.Flag(NotFlags.Strange); | ||
| }, | ||
| Throws.Exception.InstanceOf<UnmetExpectationException>() | ||
| .With.Message.Contains("not decorated with [Flags]") | ||
| ); | ||
| // Assert | ||
| } | ||
|
|
||
| public enum NotFlags | ||
| { | ||
| Unknown, | ||
| Up, | ||
| Down, | ||
| Strange, | ||
| Charm, | ||
| Bottom, | ||
| Top | ||
| } | ||
|
|
||
| [Flags] | ||
| public enum Numbers | ||
| { | ||
| Zero = 0, | ||
| One = 1, | ||
| Two = 2, | ||
| Three = 4, | ||
| Four = 8 | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,96 @@ | ||
| using System; | ||
| using Imported.PeanutButter.Utils; | ||
| using NExpect.Interfaces; | ||
| using NExpect.MatcherLogic; | ||
| using static NExpect.Implementations.MessageHelpers; | ||
|
|
||
| namespace NExpect; | ||
|
|
||
| /// <summary> | ||
| /// Provides matchers for enum values | ||
| /// </summary> | ||
| public static class EnumMatchers | ||
| { | ||
| /// <summary> | ||
| /// Verifies that the [Flag]-decorated enum | ||
| /// has the provided flag | ||
| /// </summary> | ||
| /// <param name="have"></param> | ||
| /// <param name="flag">The flag being tested for</param> | ||
| /// <typeparam name="T"></typeparam> | ||
| /// <returns></returns> | ||
| public static IMore<T> Flag<T>( | ||
| this IHave<T> have, | ||
| T flag | ||
| ) where T : struct | ||
| { | ||
| return have.Flag( | ||
| flag, | ||
| NULL_STRING | ||
| ); | ||
| } | ||
|
|
||
| /// <summary> | ||
| /// Verifies that the [Flag]-decorated enum | ||
| /// has the provided flag | ||
| /// </summary> | ||
| /// <param name="have"></param> | ||
| /// <param name="flag">The flag being tested for</param> | ||
| /// <param name="customMessage">A custom error message</param> | ||
| /// <typeparam name="T"></typeparam> | ||
| /// <returns></returns> | ||
| public static IMore<T> Flag<T>( | ||
| this IHave<T> have, | ||
| T flag, | ||
| string customMessage | ||
| ) where T : struct | ||
| { | ||
| return have.Flag( | ||
| flag, | ||
| () => customMessage | ||
| ); | ||
| } | ||
|
|
||
| /// <summary> | ||
| /// Verifies that the [Flag]-decorated enum | ||
| /// has the provided flag | ||
| /// </summary> | ||
| /// <param name="have"></param> | ||
| /// <param name="flag">The flag being tested for</param> | ||
| /// <param name="customMessageGenerator">Generates a custom error message</param> | ||
| /// <typeparam name="T"></typeparam> | ||
| /// <returns></returns> | ||
| public static IMore<T> Flag<T>( | ||
| this IHave<T> have, | ||
| T flag, | ||
| Func<string> customMessageGenerator | ||
| ) where T : struct | ||
| { | ||
| return have.AddMatcher( | ||
| actual => | ||
| { | ||
| if (!typeof(T).HasAttribute<FlagsAttribute>()) | ||
| { | ||
| return new EnforcedMatcherResult( | ||
| false, | ||
| FinalMessageFor( | ||
| () => | ||
| $"{typeof(T)} is not decorated with [Flags]. Are you sure you should be using it like a Flags type?", | ||
| customMessageGenerator | ||
| ) | ||
| ); | ||
| } | ||
|
|
||
| var passed = actual.HasFlag(flag); | ||
|
|
||
| return new MatcherResult( | ||
| passed, | ||
| FinalMessageFor( | ||
| () => $"Expected ({actual}) {passed.AsNot()}to have flag ({flag})", | ||
| customMessageGenerator | ||
| ) | ||
| ); | ||
| } | ||
| ); | ||
| } | ||
| } |
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Submodule PeanutButter
updated
46 files