Configurable zap amount

damusTests/damusTests.swift

@@ -88,6 +88,14 @@ class damusTests: XCTestCase {
         XCTAssertEqual(parsed, expected)
     }
     
+    func testSaveDefaultZapAmount() {
+        let pubkey = "test_pubkey"
+        let amt = 1000
+        set_default_zap_amount(pubkey: pubkey, amount: amt)
+        let loaded = get_default_zap_amount(pubkey: pubkey)!
+        XCTAssertEqual(loaded, amt)
+    }
+    
     func testSaveRelayFilters() {
         var filters = Set<RelayFilter>()