make notification as separate package (#5294)

* Remove old notification files

* Add net package

* Add event package

* Modify minio to take new notification system

pkg/net/port_test.go

@@ -0,0 +1,92 @@
+/*
+ * Minio Cloud Storage, (C) 2018 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 net
+
+import (
+	"testing"
+)
+
+func TestPortString(t *testing.T) {
+	testCases := []struct {
+		port        Port
+		expectedStr string
+	}{
+		{Port(0), "0"},
+		{Port(9000), "9000"},
+		{Port(65535), "65535"},
+		{Port(1024), "1024"},
+	}
+
+	for i, testCase := range testCases {
+		str := testCase.port.String()
+
+		if str != testCase.expectedStr {
+			t.Fatalf("test %v: error: port: %v, got: %v", i+1, testCase.expectedStr, str)
+		}
+	}
+}
+
+func TestParsePort(t *testing.T) {
+	testCases := []struct {
+		s            string
+		expectedPort Port
+		expectErr    bool
+	}{
+		{"0", Port(0), false},
+		{"9000", Port(9000), false},
+		{"65535", Port(65535), false},
+		{"90000", Port(0), true},
+		{"-10", Port(0), true},
+		{"", Port(0), true},
+		{"http", Port(0), true},
+		{" 1024", Port(0), true},
+	}
+
+	for i, testCase := range testCases {
+		port, err := ParsePort(testCase.s)
+		expectErr := (err != nil)
+
+		if expectErr != testCase.expectErr {
+			t.Fatalf("test %v: error: expected: %v, got: %v", i+1, testCase.expectErr, expectErr)
+		}
+
+		if !testCase.expectErr {
+			if port != testCase.expectedPort {
+				t.Fatalf("test %v: error: port: %v, got: %v", i+1, testCase.expectedPort, port)
+			}
+		}
+	}
+}
+
+func TestMustParsePort(t *testing.T) {
+	testCases := []struct {
+		s            string
+		expectedPort Port
+	}{
+		{"0", Port(0)},
+		{"9000", Port(9000)},
+		{"65535", Port(65535)},
+	}
+
+	for i, testCase := range testCases {
+		port := MustParsePort(testCase.s)
+
+		if port != testCase.expectedPort {
+			t.Fatalf("test %v: error: port: %v, got: %v", i+1, testCase.expectedPort, port)
+		}
+	}
+}