Merge pull request #3528 from BrzVlad/fix-sgen-check-before-collections

[mono.git] / mcs / class / corlib / Test / System.IO / FileStreamTest.cs

diff --git a/mcs/class/corlib/Test/System.IO/FileStreamTest.cs b/mcs/class/corlib/Test/System.IO/FileStreamTest.cs
index be6236d6a0700d5c07c399ad02479732d13bd050..b07955903f41a1946e709d8568c1fa42c8c02529 100644 (file)
--- a/mcs/class/corlib/Test/System.IO/FileStreamTest.cs
+++ b/mcs/class/corlib/Test/System.IO/FileStreamTest.cs
@@ -25,10 +25,6 @@ namespace MonoTests.System.IO
        {
                string TempFolder = Path.Combine (Path.GetTempPath (), "MonoTests.System.IO.Tests");
                static readonly char DSC = Path.DirectorySeparatorChar;
-               static bool MacOSX = false;
-
-               [DllImport ("libc")]
-               static extern int uname (IntPtr buf);
 
                [TearDown]
                public void TearDown ()
@@ -44,13 +40,6 @@ namespace MonoTests.System.IO
                                Directory.Delete (TempFolder, true);
 
                        Directory.CreateDirectory (TempFolder);
-#if !MOBILE                    
-                       // from XplatUI.cs
-                       IntPtr buf = Marshal.AllocHGlobal (8192);
-                       if (uname (buf) == 0)
-                               MacOSX = Marshal.PtrToStringAnsi (buf) == "Darwin";
-                       Marshal.FreeHGlobal (buf);
-#endif
                }
 
                public void TestCtr ()
@@ -1660,6 +1649,28 @@ namespace MonoTests.System.IO
                        
                }
 
+               [Test]
+               public void OpenCharDeviceRepeatedly ()
+               {
+                       // https://bugzilla.xamarin.com/show_bug.cgi?id=38408
+                       try {
+                               using (var f = new FileStream ("/dev/zero", FileMode.Open))
+                               {
+                               }
+                       } catch (FileNotFoundException) {
+                               // Only run this test on platforms where /dev/zero exists
+                               Assert.Ignore();
+                       } catch (DirectoryNotFoundException) {
+                               // Only run this test on platforms where /dev exists
+                               Assert.Ignore();
+                       }
+
+                       // this shouldn't throw
+                       using (var g = new FileStream ("/dev/zero", FileMode.Open))
+                       {
+                       }
+               }
+
 #if !MOBILE
                [Test]
                public void WriteWithExposedHandle ()
@@ -1706,5 +1717,30 @@ namespace MonoTests.System.IO
                        }
                }
 #endif
+
+               [Test] // Covers #11699
+               public void ReadWriteFileLength ()
+               {
+                       int bufferSize = 128;
+                       int readLength = 1;
+                       int writeLength = bufferSize + 1;
+
+                       string path = TempFolder + DSC + "readwritefilelength.tmp";
+
+                       try {
+                               File.WriteAllBytes (path, new byte [readLength + 1]);
+
+                               using (var file = new FileStream (path, FileMode.Open, FileAccess.ReadWrite, FileShare.Read,
+                                                                                                bufferSize, FileOptions.SequentialScan))
+                               {
+                                       file.Read (new byte [readLength], 0, readLength);
+                                       file.Write (new byte [writeLength], 0, writeLength);
+
+                                       Assert.AreEqual (readLength + writeLength, file.Length);
+                               }
+                       } finally {
+                               DeleteFile (path);
+                       }
+               }
        }
 }