Move xUnit tests for DNX xUnit runner

src/Microsoft.PowerShell.Linux.UnitTests/project.json

@@ -0,0 +1,26 @@
+{
+    "version": "1.0.0.0",
+    "description": "PowerShell On Linux xUnit Tests",
+    "authors": [ "andschwa" ],
+    "tags": [ "" ],
+    "projectUrl": "",
+    "licenseUrl": "",
+
+    "dependencies": {
+        "System.Management.Automation": "",
+        "Microsoft.PowerShell.Security": "",
+        "Microsoft.PowerShell.Commands.Utility": "",
+        "Microsoft.PowerShell.Commands.Management": "",
+	"xunit": "2.1.0-*",
+        "xunit.runner.dnx": "2.1.0-*"
+    },
+
+    "commands": {
+	"test": "xunit.runner.dnx"
+    },
+
+    "frameworks": {
+        "dnxcore50": {
+        }
+    }
+}

src/xunit-tests/xunit-tests.mk

@@ -1,12 +0,0 @@
-# xUnit tests for PowerShell
-# - results in xunit-tests.xml
-# - see https://xunit.github.io/
-TEST_FOLDER=$(MONAD)/src/xunit-tests
-TEST_SRCS=$(TEST_FOLDER)/test_*.cs
-TEST_TARGETS=$(addprefix $(PSLIB)/, System.Management.Automation.dll Microsoft.PowerShell.Commands.Management.dll)
-
-$(PSLIB)/PowerShell.Linux.Test.dll: $(TEST_SRCS) $(TEST_TARGETS)
-	$(CSC) $(CSCOPTS_LIB) -out:$@ $(addprefix -r:$(MONAD_EXT)/xunit/, xunit.core.dll xunit.assert.dll) $(addprefix -r:, $(TEST_TARGETS)) $(COREREF) $(TEST_SRCS)
-
-test: $(PSLIB)/PowerShell.Linux.Test.dll
-	$(POWERSHELL) $(PSLIB)/xunit.console.netcore.exe $< -xml $(MONAD)/xunit-tests.xml