124 lines
3.4 KiB
C#
124 lines
3.4 KiB
C#
#region Apache License 2.0
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/*
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Nuclex .NET Framework
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Copyright (C) 2002-2024 Markus Ewald / Nuclex Development Labs
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#endregion // Apache License 2.0
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#if UNITTEST
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using System;
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using System.IO;
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using NUnit.Framework;
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namespace Nuclex.Support {
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/// <summary>Unit Test for the enumeration helper class</summary>
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[TestFixture]
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internal class EnumHelperTest {
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#region enum TestEnumeration
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/// <summary>An enumeration used for unit testing</summary>
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internal enum TestEnumeration {
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/// <summary>First arbitrary enumeration value</summary>
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One = -2,
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/// <summary>Third arbitrary enumeration value</summary>
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Three = 33,
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/// <summary>Second arbitrary enumeration value</summary>
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Two = 23
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}
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#endregion // enum TestEnumeration
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#region enum EmptyEnumeration
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internal enum EmptyEnumeration { }
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#endregion // enum EmptyEnumeration
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/// <summary>
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/// Verifies that the enum helper can list the members of an enumeration
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/// </summary>
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[Test]
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public void TestGetValues() {
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CollectionAssert.AreEquivalent(
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new TestEnumeration[] {
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TestEnumeration.One, TestEnumeration.Two, TestEnumeration.Three
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},
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EnumHelper.GetValues<TestEnumeration>()
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);
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}
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/// <summary>
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/// Verifies that the enum helper can locate the highest value in an enumeration
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/// </summary>
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[Test]
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public void TestGetHighestValue() {
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Assert.AreEqual(
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TestEnumeration.Three, EnumHelper.GetHighestValue<TestEnumeration>()
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);
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}
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/// <summary>
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/// Verifies that the enum helper can locate the lowest value in an enumeration
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/// </summary>
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[Test]
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public void TestGetLowestValue() {
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Assert.AreEqual(
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TestEnumeration.One, EnumHelper.GetLowestValue<TestEnumeration>()
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);
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}
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/// <summary>
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/// Tests whether an exception is thrown if the GetValues() method is used on
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/// a non-enumeration type
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/// </summary>
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[Test]
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public void TestThrowOnNonEnumType() {
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Assert.Throws<ArgumentException>(
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delegate() { EnumHelper.GetValues<int>(); }
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);
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}
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/// <summary>
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/// Verifies that the default value for an enumeration is returned if
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/// the GetLowestValue() method is used on an empty enumeration
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/// </summary>
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[Test]
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public void TestLowestValueInEmptyEnumeration() {
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Assert.AreEqual(
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default(EmptyEnumeration), EnumHelper.GetLowestValue<EmptyEnumeration>()
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);
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}
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/// <summary>
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/// Verifies that the default value for an enumeration is returned if
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/// the GetHighestValue() method is used on an empty enumeration
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/// </summary>
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[Test]
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public void TestHighestValueInEmptyEnumeration() {
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Assert.AreEqual(
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default(EmptyEnumeration), EnumHelper.GetHighestValue<EmptyEnumeration>()
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);
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}
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}
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} // namespace Nuclex.Support
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#endif // UNITTEST
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