[tests/link sdk] Fix watchOS version check.

tests/linker-ios/link sdk/DllImportTest.cs

@@ -53,11 +53,7 @@ namespace LinkSdk {
 				Assert.That (Dlfcn.dlsym (lib, "sqlite3_bind_int"), Is.Not.EqualTo (IntPtr.Zero), "sqlite3_bind_int");
 				// iOS does not have some symbols defined - if that change/fail in the future we'll need to update Mono.Data.Sqlite
 				// note: Apple devices (at least iOS and AppleTV) running 10.x have a more recent version of libsqlite which includes _key and _rekey
-#if __WATCHOS__
-				var version = true;
-#else
-				var version = UIDevice.CurrentDevice.CheckSystemVersion (10,0);
-#endif
+				var version = TestRuntime.CheckXcodeVersion (8, 0);
 				if (version && (Runtime.Arch == Arch.DEVICE)) {
 					Assert.That (Dlfcn.dlsym (lib, "sqlite3_key"), Is.Not.EqualTo (IntPtr.Zero), "sqlite3_key");
 					Assert.That (Dlfcn.dlsym (lib, "sqlite3_rekey"), Is.Not.EqualTo (IntPtr.Zero), "sqlite3_rekey");

tests/linker-ios/link sdk/link sdk.csproj

@@ -172,6 +172,9 @@
     <Compile Include="ReflectionTest.cs" />
     <Compile Include="HttpClientHandlerTest.cs" />
     <Compile Include="CanaryTest.cs" />
+    <Compile Include="..\..\common\TestRuntime.cs">
+        <Link>TestRuntime.cs</Link>
+    </Compile>
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\..\BundledResources\BundledResources.csproj">