diff --git a/test/models/transactions_model_test.dart b/test/models/transactions_model_test.dart
index 31df03a5e..b242aa171 100644
--- a/test/models/transactions_model_test.dart
+++ b/test/models/transactions_model_test.dart
@@ -1,7 +1,112 @@
 import 'package:flutter_test/flutter_test.dart';
 import 'package:stackwallet/models/models.dart';
 
+import '../services/coins/firo/sample_data/transaction_data_samples.dart';
+
 void main() {
+  group("TimeStamp", () {
+    test("Timestamp is now", () {
+      final date = extractDateFromTimestamp(0);
+    });
+
+    test("Timestamp is null", () {
+      final date = extractDateFromTimestamp(null);
+    });
+
+    test("Timestamp is a random date", () {
+      final date = extractDateFromTimestamp(1876352482);
+    });
+  });
+  group("Transaction", () {
+    test("Factory transaction", () {
+      final tx = Transaction.fromJson({
+        "txid": "txid",
+        "confirmed_status": true,
+        "timestamp": 1876352482,
+        "txType": "txType",
+        "amount": 10,
+        "worthNow": "1",
+        "worthAtBlockTimestamp": "1",
+        "fees": 1,
+        "inputSize": 1,
+        "outputSize": 1,
+        "inputs": [],
+        "outputs": [],
+        "address": "address",
+        "height": 1,
+        "confirmations": 1,
+        "aliens": [],
+        "subType": "mint",
+        "isCancelled": false,
+        "slateId": "slateId",
+        "otherData": "otherData",
+      });
+    });
+
+    /// TODO: test TransactionChunk w a transaction in it
+    test("TransactionChunk", () {
+      final transactionchunk = TransactionChunk.fromJson({
+        "timestamp": 45920,
+        "transactions": [],
+      });
+      expect(
+          transactionchunk.toString(), "timestamp: 45920 transactions: [\n]");
+    });
+  });
+
+  group("Input", () {
+    test("Input.toString", () {
+      final input = Input(
+        txid: "txid",
+        vout: 1,
+        prevout: null,
+        scriptsig: "scriptsig",
+        scriptsigAsm: "scriptsigAsm",
+        witness: [],
+        isCoinbase: false,
+        sequence: 1,
+        innerRedeemscriptAsm: "innerRedeemscriptAsm",
+      ); //Input
+
+      expect(input.toString(), "{txid: txid}");
+    });
+
+    test("Input.toString", () {
+      final input = Input.fromJson({
+        "txid": "txid",
+        "vout": 1,
+        "prevout": null,
+        "scriptSig": {"hex": "somehexString", "asm": "someasmthing"},
+        "scriptsigAsm": "scriptsigAsm",
+        "witness": [],
+        "isCoinbase": false,
+        "sequence": 1,
+        "innerRedeemscriptAsm": "innerRedeemscriptAsm",
+      }); //Input
+
+      expect(input.toString(), "{txid: txid}");
+    });
+  });
+
+  group("Output", () {
+    test("Output.toString", () {
+      final output = Output.fromJson({
+        "scriptPubKey": {
+          "hex": "somehexSting",
+          "asm": "someasmthing",
+          "type": "sometype",
+          "addresses": "someaddresses",
+        },
+        "scriptpubkeyAsm": "scriptpubkeyAsm",
+        "scriptpubkeyType": "scriptpubkeyType",
+        "scriptpubkeyAddress": "address",
+        "value": 2,
+      }); //Input
+
+      expect(output.toString(), "Instance of \'Output\'");
+    });
+  });
+
   group("Transaction isMinting", () {
     test("Transaction isMinting unconfirmed mint", () {
       final tx = Transaction(