diff --git a/tests/README.md b/tests/README.md
index cf203a876dcf..fc5732adcfe9 100644
--- a/tests/README.md
+++ b/tests/README.md
@@ -1,5 +1,11 @@
 # Various tests to be executed prior to releases
 
+## Test permissions
+
+There are a number of tests that acccess the file system and the bluetooh. For these tests to correctly execute you have to ensure that
+the terminal application that you are using to execute the tests has access to the full filesystem and the bluetooth. If you do not do this
+step the macOS tests will crash.
+
 ## Test solutions
 
 Many of the test solutions and test projects are generated, and will
diff --git a/tests/monotouch-test/MetalPerformanceShaders/MPSAccelerationStructureTests.cs b/tests/monotouch-test/MetalPerformanceShaders/MPSAccelerationStructureTests.cs
index 6eedcfc79edd..0d8bcedba205 100644
--- a/tests/monotouch-test/MetalPerformanceShaders/MPSAccelerationStructureTests.cs
+++ b/tests/monotouch-test/MetalPerformanceShaders/MPSAccelerationStructureTests.cs
@@ -33,6 +33,7 @@ public void Metal ()
 		{
 			TestRuntime.AssertDevice ();
 			TestRuntime.AssertXcodeVersion (10, 0);
+			TestRuntime.AssertNotVirtualMachine ();
 
 			device = MTLDevice.SystemDefault;
 			// some older hardware won't have a default
diff --git a/tests/monotouch-test/MetalPerformanceShaders/MPSImageBatchTests.cs b/tests/monotouch-test/MetalPerformanceShaders/MPSImageBatchTests.cs
index f74bbe314daf..006041af2f56 100644
--- a/tests/monotouch-test/MetalPerformanceShaders/MPSImageBatchTests.cs
+++ b/tests/monotouch-test/MetalPerformanceShaders/MPSImageBatchTests.cs
@@ -31,6 +31,7 @@ public void Metal ()
 		{
 			TestRuntime.AssertDevice ();
 			TestRuntime.AssertXcodeVersion (10, 0);
+			TestRuntime.AssertNotVirtualMachine ();
 
 			device = MTLDevice.SystemDefault;
 			// some older hardware won't have a default
diff --git a/tests/monotouch-test/MetalPerformanceShaders/MPSImageHistogramEqualizationTest.cs b/tests/monotouch-test/MetalPerformanceShaders/MPSImageHistogramEqualizationTest.cs
index 28054050e6c4..d626c131dfc5 100644
--- a/tests/monotouch-test/MetalPerformanceShaders/MPSImageHistogramEqualizationTest.cs
+++ b/tests/monotouch-test/MetalPerformanceShaders/MPSImageHistogramEqualizationTest.cs
@@ -30,6 +30,7 @@ public void Metal ()
 				Assert.Inconclusive ("Metal Performance Shaders is not supported in the simulator");
 #else
 			TestRuntime.AssertXcodeVersion (9, 0);
+			TestRuntime.AssertNotVirtualMachine ();
 #endif
 
 			device = MTLDevice.SystemDefault;
diff --git a/tests/monotouch-test/MetalPerformanceShaders/MPSImageHistogramSpecificationTest.cs b/tests/monotouch-test/MetalPerformanceShaders/MPSImageHistogramSpecificationTest.cs
index a8a8b7ae46e9..fd395cceace2 100644
--- a/tests/monotouch-test/MetalPerformanceShaders/MPSImageHistogramSpecificationTest.cs
+++ b/tests/monotouch-test/MetalPerformanceShaders/MPSImageHistogramSpecificationTest.cs
@@ -30,6 +30,7 @@ public void Metal ()
 				Assert.Inconclusive ("Metal Performance Shaders is not supported in the simulator");
 #else
 			TestRuntime.AssertXcodeVersion (9, 0);
+			TestRuntime.AssertNotVirtualMachine ();
 #endif
 
 			device = MTLDevice.SystemDefault;
diff --git a/tests/monotouch-test/MetalPerformanceShaders/MPSImageHistogramTest.cs b/tests/monotouch-test/MetalPerformanceShaders/MPSImageHistogramTest.cs
index 44bf15aa70f6..6a4bfdd908c7 100644
--- a/tests/monotouch-test/MetalPerformanceShaders/MPSImageHistogramTest.cs
+++ b/tests/monotouch-test/MetalPerformanceShaders/MPSImageHistogramTest.cs
@@ -30,6 +30,7 @@ public void Metal ()
 				Assert.Inconclusive ("Metal Performance Shaders is not supported in the simulator");
 #else
 			TestRuntime.AssertXcodeVersion (9, 0);
+			TestRuntime.AssertNotVirtualMachine ();
 #endif
 
 			device = MTLDevice.SystemDefault;
diff --git a/tests/monotouch-test/MetalPerformanceShaders/MPSImageNormalizedHistogramTests.cs b/tests/monotouch-test/MetalPerformanceShaders/MPSImageNormalizedHistogramTests.cs
index 0f01ffcb58ea..1af64a62ec0e 100644
--- a/tests/monotouch-test/MetalPerformanceShaders/MPSImageNormalizedHistogramTests.cs
+++ b/tests/monotouch-test/MetalPerformanceShaders/MPSImageNormalizedHistogramTests.cs
@@ -30,6 +30,7 @@ public void Metal ()
 		{
 			TestRuntime.AssertDevice ();
 			TestRuntime.AssertXcodeVersion (10, 0);
+			TestRuntime.AssertNotVirtualMachine ();
 
 			device = MTLDevice.SystemDefault;
 			// some older hardware won't have a default
diff --git a/tests/monotouch-test/MetalPerformanceShaders/MPSStateBatchTests.cs b/tests/monotouch-test/MetalPerformanceShaders/MPSStateBatchTests.cs
index 09c69717ba56..3bc36de253ef 100644
--- a/tests/monotouch-test/MetalPerformanceShaders/MPSStateBatchTests.cs
+++ b/tests/monotouch-test/MetalPerformanceShaders/MPSStateBatchTests.cs
@@ -31,6 +31,7 @@ public void Metal ()
 		{
 			TestRuntime.AssertDevice ();
 			TestRuntime.AssertXcodeVersion (10, 0);
+			TestRuntime.AssertNotVirtualMachine ();
 
 			device = MTLDevice.SystemDefault;
 			// some older hardware won't have a default
diff --git a/tests/monotouch-test/MetalPerformanceShaders/MPSStateResourceListTests.cs b/tests/monotouch-test/MetalPerformanceShaders/MPSStateResourceListTests.cs
index be9ba09a2624..562fa794adf8 100644
--- a/tests/monotouch-test/MetalPerformanceShaders/MPSStateResourceListTests.cs
+++ b/tests/monotouch-test/MetalPerformanceShaders/MPSStateResourceListTests.cs
@@ -30,6 +30,7 @@ public void Metal ()
 		{
 			TestRuntime.AssertDevice ();
 			TestRuntime.AssertXcodeVersion (10, 0);
+			TestRuntime.AssertNotVirtualMachine ();
 
 			device = MTLDevice.SystemDefault;
 			// some older hardware won't have a default