[Wallet] API: optional amount in InvoiceResponse (#236)

* fix missing value in InvoiceResponse API

* wallet api: optional amount in invoiceresponse

* skip tor test again

tests/test_wallet_api.py

@@ -0,0 +1,119 @@
+from fastapi.testclient import TestClient
+
+from cashu.core.settings import settings
+from cashu.wallet.api.app import app
+
+
+def test_invoice(mint):
+    with TestClient(app) as client:
+        response = client.post("/invoice?amount=100")
+        assert response.status_code == 200
+        if settings.lightning:
+            assert response.json()["invoice"]
+        else:
+            assert response.json()["balance"]
+            assert response.json()["amount"]
+
+
+def test_balance():
+    with TestClient(app) as client:
+        response = client.get("/balance")
+        assert response.status_code == 200
+        assert response.json()["balance"]
+        assert response.json()["keysets"]
+        assert response.json()["mints"]
+
+
+def test_send(mint):
+    with TestClient(app) as client:
+        response = client.post("/send?amount=10")
+        assert response.status_code == 200
+        assert response.json()["balance"]
+
+
+def test_pending():
+    with TestClient(app) as client:
+        response = client.get("/pending")
+        assert response.status_code == 200
+
+
+def test_receive_all(mint):
+    with TestClient(app) as client:
+        response = client.post("/receive?all=true")
+        assert response.status_code == 200
+        assert response.json()["initial_balance"]
+        assert response.json()["balance"]
+
+
+def test_burn_all(mint):
+    with TestClient(app) as client:
+        response = client.post("/send?amount=20")
+        assert response.status_code == 200
+        response = client.post("/burn?all=true")
+        assert response.status_code == 200
+        assert response.json()["balance"]
+
+
+def test_pay():
+    with TestClient(app) as client:
+        invoice = (
+            "lnbc100n1pjzp22cpp58xvjxvagzywky9xz3vurue822aaax"
+            "735hzc5pj5fg307y58v5znqdq4vdshx6r4ypjx2ur0wd5hgl"
+            "h6ahauv24wdmac4zk478pmwfzd7sdvm8tje3dmfue3lc2g4l"
+            "9g40a073h39748uez9p8mxws5vqwjmkqr4wl5l7n4dlhj6z6"
+            "va963cqvufrs4"
+        )
+        response = client.post(f"/pay?invoice={invoice}")
+        if not settings.lightning:
+            assert response.status_code == 400
+        else:
+            assert response.status_code == 200
+
+
+def test_lock():
+    with TestClient(app) as client:
+        response = client.get("/lock")
+        assert response.status_code == 200
+
+
+def test_locks():
+    with TestClient(app) as client:
+        response = client.get("/locks")
+        assert response.status_code == 200
+
+
+def test_invoices():
+    with TestClient(app) as client:
+        response = client.get("/invoices")
+        assert response.status_code == 200
+
+
+def test_wallets():
+    with TestClient(app) as client:
+        response = client.get("/wallets")
+        assert response.status_code == 200
+
+
+def test_info():
+    with TestClient(app) as client:
+        response = client.get("/info")
+        assert response.status_code == 200
+        assert response.json()["version"]
+
+
+def test_flow(mint):
+    with TestClient(app) as client:
+        if not settings.lightning:
+            response = client.get("/balance")
+            initial_balance = response.json()["balance"]
+            response = client.post("/invoice?amount=100")
+            assert response.json()["balance"] == initial_balance + 100
+            response = client.post("/send?amount=50")
+            assert response.json()["balance"] == initial_balance + 50
+            response = client.post("/send?amount=50")
+            assert response.json()["balance"] == initial_balance
+            response = client.get("/pending")
+            token = response.json()["pending_token"]["0"]["token"]
+            amount = response.json()["pending_token"]["0"]["amount"]
+            response = client.post(f"/receive?token={token}")
+            assert response.json()["balance"] == initial_balance + amount