Merge pull request #267 from crupest/backend

春节大换血 Spring festival big change.

1 files changed, 44 insertions, 0 deletions

diff --git a/BackEnd/Timeline.Tests/XUnitHelper.cs b/BackEnd/Timeline.Tests/XUnitHelper.cs
new file mode 100644
index 00000000..a2812ad3
--- /dev/null
+++ b/BackEnd/Timeline.Tests/XUnitHelper.cs
@@ -0,0 +1,44 @@
+using System;

+using System.Collections.Generic;

+using System.Linq;

+

+namespace Timeline.Tests

+{

+    public static class XUnitHelper

+    {

+        public static IEnumerable<object?[]> ComposeTestData(params IEnumerable<object?[]>[] testDatas)

+        {

+            return ComposeTestData(new ArraySegment<IEnumerable<object?[]>>(testDatas));

+        }

+

+        public static IEnumerable<object?[]> ComposeTestData(ArraySegment<IEnumerable<object?[]>> testDatas)

+        {

+            if (testDatas.Count == 0)

+                throw new ArgumentException("Test data list can't be empty.", nameof(testDatas));

+

+            if (testDatas.Count == 1)

+            {

+                foreach (var d in testDatas[0])

+                    yield return d;

+            }

+            else

+            {

+                foreach (var head in testDatas[0])

+                    foreach (var rest in ComposeTestData(testDatas.Slice(1)))

+                        yield return head.Concat(rest).ToArray();

+            }

+        }

+

+        public static IEnumerable<object?[]> AppendTestData(this IEnumerable<object?[]> origin, params IEnumerable<object?>[] toAppend)

+        {

+            IEnumerable<object?[]> result = origin;

+

+            foreach (var oneToAppend in toAppend)

+            {

+                result = ComposeTestData(result, oneToAppend.Select(testData => new object?[] { testData }));

+            }

+

+            return result;

+        }

+    }

+}