Big-endian test case fixes: unsafe compiler services (#49692)

* Update expected values for endian-dependent test cases
dotnet · Mar 16, 2021 · 3982863 · 3982863
1 parent 4e17004
commit 3982863
Showing 1 changed file with 36 additions and 8 deletions.
diff --git a/src/libraries/System.Runtime.CompilerServices.Unsafe/tests/UnsafeTests.cs b/src/libraries/System.Runtime.CompilerServices.Unsafe/tests/UnsafeTests.cs
@@ -53,7 +53,15 @@ public static unsafe void WriteBytesIntoInt32()
             Assert.Equal(2, b4.B2);
             Assert.Equal(3, b4.B3);
 
-            int expected = (b4.B3 << 24) + (b4.B2 << 16) + (b4.B1 << 8) + (b4.B0);
+            int expected;
+            if (BitConverter.IsLittleEndian)
+            {
+                expected = (b4.B3 << 24) + (b4.B2 << 16) + (b4.B1 << 8) + (b4.B0);
+            }
+            else
+            {
+                expected = (b4.B0 << 24) + (b4.B1 << 16) + (b4.B2 << 8) + (b4.B3);
+            }
             Assert.Equal(expected, value);
         }
 
@@ -63,12 +71,24 @@ public static unsafe void LongIntoCompoundStruct()
             long value = 1234567891011121314L;
             long* longAddress = (long*)Unsafe.AsPointer(ref value);
             Byte4Short2 b4s2 = Unsafe.Read<Byte4Short2>(longAddress);
-            Assert.Equal(162, b4s2.B0);
-            Assert.Equal(48, b4s2.B1);
-            Assert.Equal(210, b4s2.B2);
-            Assert.Equal(178, b4s2.B3);
-            Assert.Equal(4340, b4s2.S4);
-            Assert.Equal(4386, b4s2.S6);
+            if (BitConverter.IsLittleEndian)
+            {
+                Assert.Equal(162, b4s2.B0);
+                Assert.Equal(48, b4s2.B1);
+                Assert.Equal(210, b4s2.B2);
+                Assert.Equal(178, b4s2.B3);
+                Assert.Equal(4340, b4s2.S4);
+                Assert.Equal(4386, b4s2.S6);
+            }
+            else
+            {
+                Assert.Equal(17, b4s2.B0);
+                Assert.Equal(34, b4s2.B1);
+                Assert.Equal(16, b4s2.B2);
+                Assert.Equal(244, b4s2.B3);
+                Assert.Equal(-19758, b4s2.S4);
+                Assert.Equal(12450, b4s2.S6);
+            }
 
             b4s2.B0 = 1;
             b4s2.B1 = 1;
@@ -78,7 +98,15 @@ public static unsafe void LongIntoCompoundStruct()
             b4s2.S6 = 1;
             Unsafe.Write(longAddress, b4s2);
 
-            long expected = 281479288520961;
+            long expected;
+            if (BitConverter.IsLittleEndian)
+            {
+                expected = 281479288520961;
+            }
+            else
+            {
+                expected = 72340172821299201;
+            }
             Assert.Equal(expected, value);
             Assert.Equal(expected, Unsafe.Read<long>(longAddress));
         }