Added simple test cases

Tests/HeliumLogger/TestLogger.swift

@@ -0,0 +1,58 @@
+/**
+ * Copyright IBM Corporation 2016
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ **/
+
+import Foundation
+import XCTest
+
+@testable import HeliumLogger
+@testable import LoggerAPI
+
+#if os(Linux)
+    import Glibc
+#else
+    import Darwin
+#endif
+
+class TestLogger : XCTestCase {
+
+    static var allTests : [(String, TestLogger -> () throws -> Void)] {
+        return [
+                   ("testInfo", testInfo),
+                   ("testWarning", testWarning),
+                   ("testError", testError),
+        ]
+    }
+
+
+    func testInfo() {
+        Log.logger = HeliumLogger()
+        Log.info("This is an error")
+
+    }
+
+    func testWarning() {
+        Log.logger = HeliumLogger()
+        Log.warning("This is an error")
+
+    }
+
+    func testError() {
+        Log.logger = HeliumLogger()
+        Log.error("This is an error")
+
+    }
+
+}

Tests/LinuxMain.swift

@@ -0,0 +1,23 @@
+/**
+ * Copyright IBM Corporation 2016
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ **/
+
+import XCTest
+
+@testable import KituraTestSuite
+
+XCTMain([
+            testCase(TestLogger.allTests),
+    ])