Refinements to RelayConnection plus tests for creating requests

Closes: #644

damusTests/RequestTests.swift

@@ -0,0 +1,39 @@
+//
+//  RequestTests.swift
+//  damusTests
+//
+//  Created by Bryan Montz on 2/17/23.
+//
+
+import XCTest
+@testable import damus
+
+final class RequestTests: XCTestCase {
+    
+    func testMakeUnsubscribeRequest() {
+        let request = NostrRequest.unsubscribe("64FD064D-EB9E-4771-8255-8D16981B920B")
+        let result = make_nostr_req(request)
+        let expectedResult = "[\"CLOSE\",\"64FD064D-EB9E-4771-8255-8D16981B920B\"]"
+        XCTAssertEqual(result, expectedResult)
+    }
+    
+    func testMakePushEvent() {
+        let now = Int64(Date().timeIntervalSince1970)
+        let event = NostrEvent(id: "59c1cf11a3e9e128c6fd5402f41e8ae0c0c7fbab570203d7410518be68c3115f",
+                               content: "Testing",
+                               pubkey: "d9fa34214aa9d151c4f4db843e9c2af4f246bab4205137731f91bcfa44d66a62",
+                               kind: 1,
+                               createdAt: now)
+        let result = make_nostr_req(.event(event))
+        let expectedResult = "[\"EVENT\",{\"pubkey\":\"d9fa34214aa9d151c4f4db843e9c2af4f246bab4205137731f91bcfa44d66a62\",\"content\":\"Testing\",\"id\":\"59c1cf11a3e9e128c6fd5402f41e8ae0c0c7fbab570203d7410518be68c3115f\",\"created_at\":\(now),\"sig\":\"\",\"kind\":1,\"tags\":[]}]"
+        XCTAssertEqual(result, expectedResult)
+    }
+    
+    func testMakeSubscriptionRequest() {
+        let filter = NostrFilter(kinds: [3], limit: 1, authors: ["d9fa34214aa9d151c4f4db843e9c2af4f246bab4205137731f91bcfa44d66a62"])
+        let subscribe = NostrSubscribe(filters: [filter], sub_id: "31C737B7-C8F9-41DD-8707-325974F279A4")
+        let result = make_nostr_req(.subscribe(subscribe))
+        let expectedResult = "[\"REQ\",\"31C737B7-C8F9-41DD-8707-325974F279A4\",{\"kinds\":[3],\"authors\":[\"d9fa34214aa9d151c4f4db843e9c2af4f246bab4205137731f91bcfa44d66a62\"],\"limit\":1}]"
+        XCTAssertEqual(result, expectedResult)
+    }
+}