diff --git a/packages/stargate/src/signingstargateclient.spec.ts b/packages/stargate/src/signingstargateclient.spec.ts
new file mode 100644
index 00000000..c99be923
--- /dev/null
+++ b/packages/stargate/src/signingstargateclient.spec.ts
@@ -0,0 +1,156 @@
+import { coin, coins, GasPrice } from "@cosmjs/launchpad";
+import { DirectSecp256k1Wallet, Registry } from "@cosmjs/proto-signing";
+import { assert } from "@cosmjs/utils";
+
+import { cosmos } from "./codec";
+import { PrivateSigningStargateClient, SigningStargateClient } from "./signingstargateclient";
+import { assertIsBroadcastTxSuccess } from "./stargateclient";
+import { faucet, makeRandomAddress, pendingWithoutSimapp, simapp, validator } from "./testutils.spec";
+
+describe("SigningStargateClient", () => {
+  describe("constructor", () => {
+    it("can be constructed with default fees", async () => {
+      const wallet = await DirectSecp256k1Wallet.fromMnemonic(faucet.mnemonic);
+      const client = await SigningStargateClient.connectWithWallet(simapp.tendermintUrl, wallet);
+      const openedClient = (client as unknown) as PrivateSigningStargateClient;
+      expect(openedClient.fees).toEqual({
+        send: {
+          amount: [
+            {
+              amount: "2000",
+              denom: "ucosm",
+            },
+          ],
+          gas: "80000",
+        },
+      });
+    });
+
+    it("can be constructed with custom registry", async () => {
+      const wallet = await DirectSecp256k1Wallet.fromMnemonic(faucet.mnemonic);
+      const registry = new Registry();
+      registry.register("/custom.MsgCustom", cosmos.bank.v1beta1.MsgSend);
+      const options = { registry: registry };
+      const client = await SigningStargateClient.connectWithWallet(simapp.tendermintUrl, wallet, options);
+      const openedClient = (client as unknown) as PrivateSigningStargateClient;
+      expect(openedClient.registry.lookupType("/custom.MsgCustom")).toEqual(cosmos.bank.v1beta1.MsgSend);
+    });
+
+    it("can be constructed with custom gas price", async () => {
+      const wallet = await DirectSecp256k1Wallet.fromMnemonic(faucet.mnemonic);
+      const gasPrice = GasPrice.fromString("3.14utest");
+      const options = { gasPrice: gasPrice };
+      const client = await SigningStargateClient.connectWithWallet(simapp.tendermintUrl, wallet, options);
+      const openedClient = (client as unknown) as PrivateSigningStargateClient;
+      expect(openedClient.fees).toEqual({
+        send: {
+          amount: [
+            {
+              amount: "251200", // 3.14 * 80_000
+              denom: "utest",
+            },
+          ],
+          gas: "80000",
+        },
+      });
+    });
+
+    it("can be constructed with custom gas limits", async () => {
+      const wallet = await DirectSecp256k1Wallet.fromMnemonic(faucet.mnemonic);
+      const gasLimits = {
+        send: 160000,
+      };
+      const options = { gasLimits: gasLimits };
+      const client = await SigningStargateClient.connectWithWallet(simapp.tendermintUrl, wallet, options);
+      const openedClient = (client as unknown) as PrivateSigningStargateClient;
+      expect(openedClient.fees).toEqual({
+        send: {
+          amount: [
+            {
+              amount: "4000", // 0.025 * 160_000
+              denom: "ucosm",
+            },
+          ],
+          gas: "160000",
+        },
+      });
+    });
+
+    it("can be constructed with custom gas price and gas limits", async () => {
+      const wallet = await DirectSecp256k1Wallet.fromMnemonic(faucet.mnemonic);
+      const gasPrice = GasPrice.fromString("3.14utest");
+      const gasLimits = {
+        send: 160000,
+      };
+      const options = { gasPrice: gasPrice, gasLimits: gasLimits };
+      const client = await SigningStargateClient.connectWithWallet(simapp.tendermintUrl, wallet, options);
+      const openedClient = (client as unknown) as PrivateSigningStargateClient;
+      expect(openedClient.fees).toEqual({
+        send: {
+          amount: [
+            {
+              amount: "502400", // 3.14 * 160_000
+              denom: "utest",
+            },
+          ],
+          gas: "160000",
+        },
+      });
+    });
+  });
+
+  describe("sendTokens", () => {
+    it("works", async () => {
+      pendingWithoutSimapp();
+      const wallet = await DirectSecp256k1Wallet.fromMnemonic(faucet.mnemonic);
+      const client = await SigningStargateClient.connectWithWallet(simapp.tendermintUrl, wallet);
+
+      const transferAmount = coins(7890, "ucosm");
+      const beneficiaryAddress = makeRandomAddress();
+      const memo = "for dinner";
+
+      // no tokens here
+      const before = await client.getBalance(beneficiaryAddress, "ucosm");
+      expect(before).toBeNull();
+
+      // send
+      const result = await client.sendTokens(faucet.address0, beneficiaryAddress, transferAmount, memo);
+      assertIsBroadcastTxSuccess(result);
+      expect(result.rawLog).toBeTruthy();
+
+      // got tokens
+      const after = await client.getBalance(beneficiaryAddress, "ucosm");
+      assert(after);
+      expect(after).toEqual(transferAmount[0]);
+    });
+  });
+
+  describe("signAndBroadcast", () => {
+    it("works", async () => {
+      pendingWithoutSimapp();
+      const wallet = await DirectSecp256k1Wallet.fromMnemonic(faucet.mnemonic);
+      const msgDelegateTypeUrl = "/cosmos.staking.v1beta1.MsgDelegate";
+      const registry = new Registry();
+      registry.register(msgDelegateTypeUrl, cosmos.staking.v1beta1.MsgDelegate);
+      const options = { registry: registry };
+      const client = await SigningStargateClient.connectWithWallet(simapp.tendermintUrl, wallet, options);
+
+      const msg = cosmos.staking.v1beta1.MsgDelegate.create({
+        delegatorAddress: faucet.address0,
+        validatorAddress: validator.validatorAddress,
+        amount: coin(1234, "ustake"),
+      });
+      const msgAny = {
+        typeUrl: msgDelegateTypeUrl,
+        value: msg,
+      };
+      const fee = {
+        amount: coins(2000, "ucosm"),
+        gas: "180000", // 180k
+      };
+      const memo = "Use your power wisely";
+      const result = await client.signAndBroadcast(faucet.address0, [msgAny], fee, memo);
+      assertIsBroadcastTxSuccess(result);
+    });
+  });
+});