nuclex-shared-dotnet/Nuclex.Support
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Added some more unit tests to verify that NextPowerOfTwo() selects the next power of two when the argument is just one increment above an even power of two

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git-svn-id: file:///srv/devel/repo-conversion/nusu@110 d2e56fa2-650e-0410-a79f-9358c0239efd
This commit is contained in:
Markus Ewald 2008-12-14 18:08:44 +00:00
parent 3731fc42ae
commit 14274a9460
1 changed files with 6 additions and 0 deletions
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6
Source/IntegerHelper.Test.cs
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@ -39,6 +39,9 @@ namespace Nuclex.Support {
Assert.AreEqual(2UL, IntegerHelper.NextPowerOf2(2UL)); Assert.AreEqual(2UL, IntegerHelper.NextPowerOf2(2UL));
Assert.AreEqual(4UL, IntegerHelper.NextPowerOf2(3UL)); Assert.AreEqual(4UL, IntegerHelper.NextPowerOf2(3UL));
Assert.AreEqual(4UL, IntegerHelper.NextPowerOf2(4UL)); Assert.AreEqual(4UL, IntegerHelper.NextPowerOf2(4UL));
Assert.AreEqual(
9223372036854775808UL, IntegerHelper.NextPowerOf2(4611686018427387905UL)
);
Assert.AreEqual( Assert.AreEqual(
9223372036854775808UL, IntegerHelper.NextPowerOf2(9223372036854775807UL) 9223372036854775808UL, IntegerHelper.NextPowerOf2(9223372036854775807UL)
); );
@ -57,6 +60,7 @@ namespace Nuclex.Support {
Assert.AreEqual(2L, IntegerHelper.NextPowerOf2(2L)); Assert.AreEqual(2L, IntegerHelper.NextPowerOf2(2L));
Assert.AreEqual(4L, IntegerHelper.NextPowerOf2(3L)); Assert.AreEqual(4L, IntegerHelper.NextPowerOf2(3L));
Assert.AreEqual(4L, IntegerHelper.NextPowerOf2(4L)); Assert.AreEqual(4L, IntegerHelper.NextPowerOf2(4L));
Assert.AreEqual(4611686018427387904L, IntegerHelper.NextPowerOf2(2305843009213693953L));
Assert.AreEqual(4611686018427387904L, IntegerHelper.NextPowerOf2(4611686018427387903L)); Assert.AreEqual(4611686018427387904L, IntegerHelper.NextPowerOf2(4611686018427387903L));
Assert.AreEqual(4611686018427387904L, IntegerHelper.NextPowerOf2(4611686018427387904L)); Assert.AreEqual(4611686018427387904L, IntegerHelper.NextPowerOf2(4611686018427387904L));
} }
@ -71,6 +75,7 @@ namespace Nuclex.Support {
Assert.AreEqual(2U, IntegerHelper.NextPowerOf2(2U)); Assert.AreEqual(2U, IntegerHelper.NextPowerOf2(2U));
Assert.AreEqual(4U, IntegerHelper.NextPowerOf2(3U)); Assert.AreEqual(4U, IntegerHelper.NextPowerOf2(3U));
Assert.AreEqual(4U, IntegerHelper.NextPowerOf2(4U)); Assert.AreEqual(4U, IntegerHelper.NextPowerOf2(4U));
Assert.AreEqual(2147483648U, IntegerHelper.NextPowerOf2(1073741825U));
Assert.AreEqual(2147483648U, IntegerHelper.NextPowerOf2(2147483647U)); Assert.AreEqual(2147483648U, IntegerHelper.NextPowerOf2(2147483647U));
Assert.AreEqual(2147483648U, IntegerHelper.NextPowerOf2(2147483648U)); Assert.AreEqual(2147483648U, IntegerHelper.NextPowerOf2(2147483648U));
} }
@ -85,6 +90,7 @@ namespace Nuclex.Support {
Assert.AreEqual(2, IntegerHelper.NextPowerOf2(2)); Assert.AreEqual(2, IntegerHelper.NextPowerOf2(2));
Assert.AreEqual(4, IntegerHelper.NextPowerOf2(3)); Assert.AreEqual(4, IntegerHelper.NextPowerOf2(3));
Assert.AreEqual(4, IntegerHelper.NextPowerOf2(4)); Assert.AreEqual(4, IntegerHelper.NextPowerOf2(4));
Assert.AreEqual(1073741824, IntegerHelper.NextPowerOf2(536870913));
Assert.AreEqual(1073741824, IntegerHelper.NextPowerOf2(1073741823)); Assert.AreEqual(1073741824, IntegerHelper.NextPowerOf2(1073741823));
Assert.AreEqual(1073741824, IntegerHelper.NextPowerOf2(1073741824)); Assert.AreEqual(1073741824, IntegerHelper.NextPowerOf2(1073741824));
} }