Add MacOS & Linux to CI; MacOS & Linux test fixes (dotnet#293)

Author: daholste

build.proj

@@ -93,8 +93,8 @@
   </Target>-->
 
   <Target Name="RunTests">
-    <MSBuild Projects="src\test\run-tests.proj" Targets="RunTests" />
-    <MSBuild Projects="src\mlnet.test\run-tests.proj" Targets="RunTests" />
+    <MSBuild Projects="src\Test\run-tests.proj" Targets="RunTests" />
+    <MSBuild Projects="src\mlnet.Test\run-tests.proj" Targets="RunTests" />
   </Target>
 
   <!-- Override CleanAllProjects from dir.traversal.targets and just remove the full BinDir -->

src/mlnet.Test/CommandLineTests.cs

@@ -107,7 +107,7 @@ public void TestCommandLineArgsValuesTest()
             var validDataset = Path.GetTempFileName();
             var labelName = "Label";
             var name = "testname";
-            var outputPath = "x:\\mlnet";
+            var outputPath = Path.GetTempPath();
             var falseString = "false";
 
             // Create handler outside so that commandline and the handler is decoupled and testable.