nostrdb: add initial swift integration

damusTests/NDB/NdbTests.swift

@@ -0,0 +1,48 @@
+//
+//  NDBIterTests.swift
+//  damusTests
+//
+//  Created by William Casarin on 2023-07-21.
+//
+
+import XCTest
+@testable import damus
+
+final class NdbTests: XCTestCase {
+
+    override func setUpWithError() throws {
+        // Put setup code here. This method is called before the invocation of each test method in the class.
+    }
+
+    override func tearDownWithError() throws {
+        // Put teardown code here. This method is called after the invocation of each test method in the class.
+    }
+
+    func test_ndb_note() throws {
+        let note = NdbNote.owned_from_json(json: test_contact_list_json)
+        XCTAssertNotNil(note)
+        guard let note else { return }
+
+        let id = "20d0ff27d6fcb13de8366328c5b1a7af26bcac07f2e558fbebd5e9242e608c09"
+        XCTAssertEqual(hex_encode(note.id), id)
+
+        XCTAssertEqual(note.tags().underestimatedCount, 786)
+        XCTAssertEqual(note.tags().underestimatedCount, 786)
+
+        //let tags = note.tags()
+        for tag in note.tags() {
+            for elem in tag {
+                print("test_ndb_iterator \(elem.)")
+            }
+        }
+
+    }
+
+    func testPerformanceExample() throws {
+        // This is an example of a performance test case.
+        self.measure {
+            // Put the code you want to measure the time of here.
+        }
+    }
+
+}