server: Move all the top level files into cmd folder. (#2490)

This change brings a change which was done for the 'mc'
package to allow for clean repo and have a cleaner
github drop in experience.

cmd/event-notifier_test.go

@@ -0,0 +1,67 @@
+/*
+ * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ *
+ * 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.
+ */
+
+package cmd
+
+import "testing"
+
+// Tests various forms of inititalization of event notifier.
+func TestInitEventNotifier(t *testing.T) {
+	fs, disk, err := getSingleNodeObjectLayer()
+	if err != nil {
+		t.Fatal("Unable to initialize FS backend.", err)
+	}
+	xl, disks, err := getXLObjectLayer()
+	if err != nil {
+		t.Fatal("Unable to initialize XL backend.", err)
+	}
+
+	disks = append(disks, disk)
+	for _, d := range disks {
+		defer removeAll(d)
+	}
+
+	// Collection of test cases for inititalizing event notifier.
+	testCases := []struct {
+		objAPI  ObjectLayer
+		configs map[string]*notificationConfig
+		err     error
+	}{
+		// Test 1 - invalid arguments.
+		{
+			objAPI: nil,
+			err:    errInvalidArgument,
+		},
+		// Test 2 - valid FS object layer but no bucket notifications.
+		{
+			objAPI: fs,
+			err:    nil,
+		},
+		// Test 3 - valid XL object layer but no bucket notifications.
+		{
+			objAPI: xl,
+			err:    nil,
+		},
+	}
+
+	// Validate if event notifier is properly initialized.
+	for i, testCase := range testCases {
+		err = initEventNotifier(testCase.objAPI)
+		if err != testCase.err {
+			t.Errorf("Test %d: Expected %s, but got: %s", i+1, testCase.err, err)
+		}
+	}
+}