Fix Host.isEqual

Author: khashiguchi

Foundation/Host.swift

@@ -75,7 +75,8 @@ open class Host: NSObject {
     }
 
     open func isEqual(to aHost: Host) -> Bool {
-        return aHost._addresses == _addresses && aHost._info == _info && aHost._names == _names && aHost._resolved == _resolved && aHost._type == _type
+        if self === aHost { return true }
+        return _addresses.firstIndex { aHost._addresses.contains($0) } != nil
     }
 
     internal func _resolveCurrent() {

TestFoundation/TestHost.swift

@@ -12,8 +12,7 @@ class TestHost: XCTestCase {
     static var allTests: [(String, (TestHost) -> () throws -> Void)] {
         return [
             ("test_addressesDoNotGrow", test_addressesDoNotGrow),
-            ("test_isEqual_positive", test_isEqual_positive),
-            ("test_isEqual_negative", test_isEqual_negative)
+            ("test_isEqual", test_isEqual)
         ]
     }
 
@@ -35,16 +34,13 @@ class TestHost: XCTestCase {
         XCTAssertEqual(swiftAddressesSecond.count, swiftAddressesFirst.count)
     }
 
-    func test_isEqual_positive() {
+    func test_isEqual() {
         let host0 = Host(address: "8.8.8.8")
         let host1 = Host(address: "8.8.8.8")
         XCTAssertTrue(host0.isEqual(to: host1))
-    }
 
-    func test_isEqual_negative() {
-        let host0 = Host(address: "8.8.8.8")
-        let host1 = Host(address: "8.8.8.9")
-        XCTAssertFalse(host0.isEqual(to: host1))
+        let host2 = Host(address: "8.8.8.9")
+        XCTAssertFalse(host0.isEqual(to: host2))
     }
 }