Access to unconfirmed UTXOs API endpoints

src/electrumx.js

@@ -299,6 +299,98 @@ class ElectrumX {
       else throw error
     }
   }
+
+  /**
+   * @api Electrumx.unconfirmed() unconfirmed() - Get a list of unconfirmed uxtos (mempool) for an address.
+   * @apiName ElectrumX Unconfirmed
+   * @apiGroup ElectrumX
+   * @apiDescription Return a list of unconfirmed uxtos (mempool) for an address.
+   *
+   * @apiExample Example usage:
+   *    (async () => {
+   *   try {
+   *     let mempool = await bchjs.Electrumx.unconfirmed('bitcoincash:qqh793x9au6ehvh7r2zflzguanlme760wuzehgzjh9');
+   *     console.log(mempool);
+   *   } catch(error) {
+   *    console.error(error)
+   *   }
+   * })()
+   *
+   * mempool = {
+   *  "success": true,
+   *  "utxos": [
+   *    {
+   *      "height": 602405,
+   *      "tx_hash": "2b37bdb3b63dd0bca720437754a36671431a950e684b64c44ea910ea9d5297c7",
+   *      "fee": 24310
+   *    }
+   *  ]
+   * }
+   *
+   * (async () => {
+   *   try {
+   *     let mempool = await bchjs.Electrumx.unconfirmed(['bitcoincash:qrdka2205f4hyukutc2g0s6lykperc8nsu5u2ddpqf', 'bitcoincash:qpdh9s677ya8tnx7zdhfrn8qfyvy22wj4qa7nwqa5v']);
+   *     console.log(mempool);
+   *   } catch(error) {
+   *    console.error(error)
+   *   }
+   * })()
+   *
+   *   mempool = {
+   *     "success": true,
+   *     "utxos": [
+   *       {
+   *         "utxos": [
+   *           {
+   *             "height": 604392,
+   *             "tx_hash": "7774e449c5a3065144cefbc4c0c21e6b69c987f095856778ef9f45ddd8ae1a41",
+   *             "fee": 24310
+   *           },
+   *           {
+   *             "height": 630834,
+   *             "tx_hash": "4fe60a51e0d8f5134bfd8e5f872d6e502d7f01b28a6afebb27f4438a4f638d53",
+   *             "fee": 3000
+   *           }
+   *         ],
+   *         "address": "bitcoincash:qrdka2205f4hyukutc2g0s6lykperc8nsu5u2ddpqf"
+   *       },
+   *       {
+   *         "utxos": [],
+   *         "address": "bitcoincash:qpdh9s677ya8tnx7zdhfrn8qfyvy22wj4qa7nwqa5v"
+   *       }
+   *     ]
+   *   }
+   *
+   */
+  async unconfirmed(address) {
+    try {
+      // Handle single address.
+      if (typeof address === "string") {
+        const response = await axios.get(
+          `${this.restURL}electrumx/unconfirmed/${address}`,
+          _this.axiosOptions
+        )
+        return response.data
+
+      // Handle array of addresses.
+      } else if (Array.isArray(address)) {
+        const response = await axios.post(
+          `${this.restURL}electrumx/unconfirmed`,
+          {
+            addresses: address
+          },
+          _this.axiosOptions
+        )
+
+        return response.data
+      }
+
+      throw new Error(`Input address must be a string or array of strings.`)
+    } catch (error) {
+      if (error.response && error.response.data) throw error.response.data
+      else throw error
+    }
+  }
 }
 
 module.exports = ElectrumX

test/integration/electrumx.js

@@ -178,4 +178,63 @@ describe(`#ElectrumX`, () => {
       }
     })
   })
+
+  describe(`#unconfirmed`, () => {
+    it(`should GET unconfirmed UTXOs (mempool) for a single address`, async () => {
+      const addr = "bitcoincash:qqy6qwk3wpne95hhv8uzwr4cn8m7c06cqgchl77dnv"
+
+      const result = await bchjs.Electrumx.unconfirmed(addr)
+      // console.log(`result: ${JSON.stringify(result, null, 2)}`)
+
+      assert.property(result, "success")
+      assert.equal(result.success, true)
+
+      assert.property(result, "utxos")
+      assert.isArray(result.utxos)
+
+      assert.property(result.utxos[0], "height")
+      assert.property(result.utxos[0], "tx_hash")
+      assert.property(result.utxos[0], "fee")
+    })
+
+    it(`should POST request for unconfirmed UTXOs (mempool) for an array of addresses`, async () => {
+      const addr = [
+        "bitcoincash:qqy6qwk3wpne95hhv8uzwr4cn8m7c06cqgchl77dnv",
+        "bitcoincash:qpyrtsl9msdu2klgfpcmn2v5r22w9rk24g8pal74ts"
+      ]
+
+      const result = await bchjs.Electrumx.unconfirmed(addr)
+      // console.log(`result: ${JSON.stringify(result, null, 2)}`)
+
+      assert.property(result, "success")
+      assert.equal(result.success, true)
+
+      assert.property(result, "utxos")
+      assert.isArray(result.utxos)
+
+      assert.property(result.utxos[0], "utxos")
+      assert.isArray(result.utxos[0].utxos)
+      assert.property(result.utxos[0], "address")
+
+      assert.property(result.utxos[0].utxos[0], "height")
+      assert.property(result.utxos[0].utxos[0], "tx_hash")
+      assert.property(result.utxos[0].utxos[0], "fee")
+    })
+
+    it(`should throw error on array size rate limit`, async () => {
+      try {
+        const addr = []
+        for (let i = 0; i < 25; i++)
+          addr.push("bitcoincash:qrdka2205f4hyukutc2g0s6lykperc8nsu5u2ddpqf")
+
+        const result = await bchjs.Electrumx.unconfirmed(addr)
+
+        console.log(`result: ${util.inspect(result)}`)
+        assert.equal(true, false, "Unexpected result!")
+      } catch (err) {
+        assert.hasAnyKeys(err, ["error"])
+        assert.include(err.error, "Array too large")
+      }
+    })
+  })
 })

test/integration/testnet/electrumx.js

@@ -182,4 +182,63 @@ describe(`#ElectrumX`, () => {
       }
     })
   })
+
+  describe(`#unconfirmed`, () => {
+    it(`should GET unconfirmed UTXOs (mempool) for a single address`, async () => {
+      const addr = "bchtest:qp25k20dgcljrz4hkdz43partam3j5httyprjp23qd"
+
+      const result = await bchjs.Electrumx.unconfirmed(addr)
+      // console.log(`result: ${JSON.stringify(result, null, 2)}`)
+
+      assert.property(result, "success")
+      assert.equal(result.success, true)
+
+      assert.property(result, "utxos")
+      assert.isArray(result.utxos)
+
+      assert.property(result.utxos[0], "height")
+      assert.property(result.utxos[0], "tx_hash")
+      assert.property(result.utxos[0], "fee")
+    })
+
+    it(`should POST unconfirmed UTXO details for an array of addresses`, async () => {
+      const addr = [
+        "bchtest:qp25k20dgcljrz4hkdz43partam3j5httyprjp23qd",
+        "bchtest:qpkl3xylrjx4jup6m66e7zg7whlaucsxeudxeqawdj"
+      ]
+
+      const result = await bchjs.Electrumx.unconfirmed(addr)
+      //console.log(`result: ${JSON.stringify(result, null, 2)}`)
+
+      assert.property(result, "success")
+      assert.equal(result.success, true)
+
+      assert.property(result, "utxos")
+      assert.isArray(result.utxos)
+
+      assert.property(result.utxos[0], "utxos")
+      assert.isArray(result.utxos[0].utxos)
+      assert.property(result.utxos[0], "address")
+
+      assert.property(result.utxos[0].utxos[0], "height")
+      assert.property(result.utxos[0].utxos[0], "tx_hash")
+      assert.property(result.utxos[0].utxos[0], "fee")
+    })
+
+    it(`should throw error on array size rate limit`, async () => {
+      try {
+        const addr = []
+        for (let i = 0; i < 25; i++)
+          addr.push("bchtest:qrvn2n228aa39xupcw9jw0d3fj8axxky656e4j62z2")
+
+        const result = await bchjs.Electrumx.unconfirmed(addr)
+        //console.log(`result: ${util.inspect(result)}`)
+
+        assert.equal(true, false, "Unexpected result!")
+      } catch (err) {
+        assert.hasAnyKeys(err, ["error"])
+        assert.include(err.error, "Array too large")
+      }
+    })
+  })
 })

test/unit/electrumx.js

@@ -196,4 +196,68 @@ describe(`#ElectrumX`, () => {
       assert.property(result.transactions[0].transactions[0], "tx_hash")
     })
   })
+
+  describe(`#unconfirmed`, () => {
+    it(`should throw an error for improper input`, async () => {
+      try {
+        const addr = 12345
+
+        await bchjs.Electrumx.unconfirmed(addr)
+        assert.equal(true, false, "Unexpected result!")
+      } catch (err) {
+        // console.log(`err: `, err)
+        assert.include(
+          err.message,
+          `Input address must be a string or array of strings`
+        )
+      }
+    })
+
+    it(`should GET unconfirmed utxos for a single address`, async () => {
+      // Stub the network call.
+      sandbox.stub(axios, "get").resolves({ data: mockData.unconfirmed })
+
+      const addr = "bitcoincash:qqh793x9au6ehvh7r2zflzguanlme760wuzehgzjh9"
+
+      const result = await bchjs.Electrumx.unconfirmed(addr)
+      // console.log(`result: ${JSON.stringify(result, null, 2)}`)
+
+      assert.property(result, "success")
+      assert.equal(result.success, true)
+
+      assert.property(result, "utxos")
+      assert.isArray(result.utxos)
+
+      assert.property(result.utxos[0], "height")
+      assert.property(result.utxos[0], "tx_hash")
+      assert.property(result.utxos[0], "fee")
+    })
+
+    it(`should POST unconfirmed utxo details for an array of addresses`, async () => {
+      // Stub the network call.
+      sandbox.stub(axios, "post").resolves({ data: mockData.unconfirmedArray })
+
+      const addr = [
+        "bitcoincash:qrdka2205f4hyukutc2g0s6lykperc8nsu5u2ddpqf",
+        "bitcoincash:qpdh9s677ya8tnx7zdhfrn8qfyvy22wj4qa7nwqa5v"
+      ]
+
+      const result = await bchjs.Electrumx.unconfirmed(addr)
+      // console.log(`result: ${JSON.stringify(result, null, 2)}`)
+
+      assert.property(result, "success")
+      assert.equal(result.success, true)
+
+      assert.property(result, "utxos")
+      assert.isArray(result.utxos)
+
+      assert.property(result.utxos[0], "utxos")
+      assert.isArray(result.utxos[0].utxos)
+      assert.property(result.utxos[0], "address")
+
+      assert.property(result.utxos[0].utxos[0], "height")
+      assert.property(result.utxos[0].utxos[0], "tx_hash")
+      assert.property(result.utxos[0].utxos[0], "fee")
+    })
+  })
 })

test/unit/fixtures/electrumx-mock.js

@@ -119,11 +119,52 @@ const transactions = {
   ]
 }
 
+const unconfirmed = {
+  success: true,
+  utxos: [
+    {
+      height: 602405,
+      tx_hash:
+        "2b37bdb3b63dd0bca720437754a36671431a950e684b64c44ea910ea9d5297c7",
+      fee: 34100
+    }
+  ]
+}
+
+const unconfirmedArray = {
+  success: true,
+  utxos: [
+    {
+      utxos: [
+        {
+          height: 604392,
+          tx_hash:
+            "7774e449c5a3065144cefbc4c0c21e6b69c987f095856778ef9f45ddd8ae1a41",
+          fee: 34210
+        },
+        {
+          height: 630834,
+          tx_hash:
+            "4fe60a51e0d8f5134bfd8e5f872d6e502d7f01b28a6afebb27f4438a4f638d53",
+          value: 3000
+        }
+      ],
+      address: "bitcoincash:qrdka2205f4hyukutc2g0s6lykperc8nsu5u2ddpqf"
+    },
+    {
+      utxos: [],
+      address: "bitcoincash:qpdh9s677ya8tnx7zdhfrn8qfyvy22wj4qa7nwqa5v"
+    }
+  ]
+}
+
 module.exports = {
   utxo,
   utxos,
   balance,
   balances,
   transaction,
-  transactions
+  transactions,
+  unconfirmed,
+  unconfirmedArray
 }