Add UnityVersionAttribute

[nowsprinting]

UnityVersionAttribute is an NUnit test attribute class to skip test run if Unity version is older and/or newer than specified.

Usage:

using System;
using NUnit.Framework;
using TestHelper.Attributes;

[TestFixture]
public class MyTestClass
{
    [Test]
    [UnityVersion(newerThanOrEqual: "2022")]
    public void MyTestMethod()
    {
        // Test run only for Unity 2022.1.0f1 or later.
    }

    [Test]
    [UnityVersion(olderThan: "2019.4.0f1")]
    public void MyTestMethod()
    {
        // Test run only for Unity older than 2019.4.0f1.
    }
}

[github-actions]

Code Metrics Report

	master (fad6d14)	#75 (7dd5788)	+/-
Coverage	71.5%	71.6%	+0.2%
Code to Test Ratio	1:0.9	1:1.0	+0.0

Details

  |                    | master (fad6d14) | #75 (7dd5788) |  +/-  |
  |--------------------|------------------|---------------|-------|
+ | Coverage           |            71.5% |         71.6% | +0.2% |
  |   Files            |               26 |            27 |    +1 |
  |   Lines            |              617 |           645 |   +28 |
+ |   Covered          |              441 |           462 |   +21 |
+ | Code to Test Ratio |            1:0.9 |         1:1.0 |  +0.0 |
  |   Code             |             1211 |          1259 |   +48 |
+ |   Test             |             1141 |          1202 |   +61 |

Code coverage of files in pull request scope (0.0% → 75.0%)

Files	Coverage	+/-
Runtime/Attributes/UnityVersionAttribute.cs	75.0%	+75.0%

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Reported by octocov