Merge pull request #41 from Permissionless-Software-Foundation/ct-unstable

validateTxid2 - slp-validate based

config/index.js

@@ -3,7 +3,9 @@
 */
 
 const config = {
-  apiTokenSecret: process.env.TOKENSECRET ? process.env.TOKENSECRET : 'secret-jwt-token'
+  apiTokenSecret: process.env.TOKENSECRET
+    ? process.env.TOKENSECRET
+    : 'secret-jwt-token'
 }
 
 module.exports = config

package-lock.json

@@ -6458,6 +6458,13 @@
         "p-cancelable": "^1.0.0",
         "to-readable-stream": "^1.0.0",
         "url-parse-lax": "^3.0.0"
+      },
+      "dependencies": {
+        "p-cancelable": {
+          "version": "1.1.0",
+          "resolved": "https://registry.npmjs.org/p-cancelable/-/p-cancelable-1.1.0.tgz",
+          "integrity": "sha512-s73XxOZ4zpt1edZYZzvhqFa6uvQc1vwUa0K0BdtIZgQMAJj9IbebH+JkgKZc9h+B05PKHLOTl4ajG1BmNrVZlw=="
+        }
       }
     },
     "graceful-fs": {
@@ -13340,11 +13347,6 @@
       "resolved": "https://registry.npmjs.org/os-tmpdir/-/os-tmpdir-1.0.2.tgz",
       "integrity": "sha1-u+Z0BseaqFxc/sdm/lc0VV36EnQ="
     },
-    "p-cancelable": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/p-cancelable/-/p-cancelable-1.1.0.tgz",
-      "integrity": "sha512-s73XxOZ4zpt1edZYZzvhqFa6uvQc1vwUa0K0BdtIZgQMAJj9IbebH+JkgKZc9h+B05PKHLOTl4ajG1BmNrVZlw=="
-    },
     "p-each-series": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/p-each-series/-/p-each-series-2.1.0.tgz",

package.json

@@ -17,9 +17,9 @@
     "test": "npm run lint && npm run test-v3",
     "lint": "standard --env mocha --fix",
     "test-v3": "export NETWORK=mainnet && nyc --reporter=text mocha --timeout 60000 test/v3/",
-    "test:temp": "export NETWORK=mainnet && mocha --timeout 25000 test/v3/util.js",
+    "test:temp": "export NETWORK=mainnet && mocha --timeout 25000 test/v3/slp.js",
     "test:integration": "mocha test/v3/integration",
-    "test:integration:slpdb": "mocha --timeout 25000 test/v3/integration/slp*.js",
+    "test:integration:slpdb": "mocha --timeout 25000 -g '#validate2Single' test/v3/integration/slp*.js",
     "coverage": "nyc report --reporter=text-lcov | coveralls",
     "coverage:report": "export NETWORK=mainnet && nyc --reporter=html mocha --timeout 25000 test/v3/",
     "docs": "./node_modules/.bin/apidoc -i src/routes/v3 -o docs"

src/middleware/route-ratelimit.js

@@ -136,7 +136,10 @@ class RateLimits {
         }
 
         // Apply paid-access rate limits based on key/IP
-        if (key.toString().indexOf('172.17.') > -1) {
+        if (
+          key.toString().indexOf('172.17.') > -1 ||
+          key.toString().indexOf('::ffff:127.0.0.1') > -1
+        ) {
           pointsToConsume = 1
           res.locals.pointsToConsume = pointsToConsume // Feedback for tests.
         }

src/routes/v3/electrumx.js

@@ -52,6 +52,7 @@ class Electrum {
     _this.router.post('/utxos', _this.utxosBulk)
     _this.router.get('/tx/data/:txid', _this.getTransactionDetails)
     _this.router.post('/tx/data', _this.transactionDetailsBulk)
+    _this.router.post('/tx/broadcast', _this.broadcastTransaction)
     _this.router.get('/block/headers/:height', _this.getBlockHeaders)
     _this.router.post('/block/headers', _this.blockHeadersBulk)
     _this.router.get('/balance/:address', _this.getBalance)
@@ -491,6 +492,92 @@ class Electrum {
     }
   }
 
+  // Returns a promise that resolves to transaction ID of the broadcasted transaction or an error.
+  // Expects input to be a txHex string, and input validation to have already
+  // been done by parent, calling function.
+  async _broadcastTransactionWithElectrum (txHex) {
+    try {
+      if (!_this.isReady) {
+        throw new Error(
+          'ElectrumX server connection is not ready. Call await connectToServer() first.'
+        )
+      }
+
+      // Broadcast the transaction hex to the ElectrumX server.
+      const electrumResponse = await _this.electrumx.request(
+        'blockchain.transaction.broadcast',
+        txHex
+      )
+      // console.log(
+      //   `electrumResponse: ${JSON.stringify(electrumResponse, null, 2)}`
+      // )
+
+      return electrumResponse
+    } catch (err) {
+      // console.log('err: ', err)
+
+      // Write out error to error log.
+      wlogger.error(
+        'Error in elecrumx.js/_transactionDetailsFromElectrum(): ',
+        err
+      )
+      throw err
+    }
+  }
+
+  /**
+   * @api {post} /electrumx/tx/broadcast Broadcast a raw transaction
+   * @apiName Broadcast a raw transaction
+   * @apiGroup ElectrumX / Fulcrum
+   * @apiDescription Broadcast a raw transaction and return the transaction ID on success or error on failure.
+   *
+   * @apiExample Example usage:
+   * curl -X POST "https://api.fullstack.cash/v3/electrumx/tx/broadcast" -H "accept: application/json" -H "Content-Type: application/json" -d '{"txHex":"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"}'
+   *
+   */
+  // POST handler for broadcasting a single transaction
+  async broadcastTransaction (req, res, next) {
+    try {
+      const txHex = req.body.txHex
+
+      if (typeof txHex !== 'string') {
+        res.status(400)
+        return res.json({
+          success: false,
+          error: 'request body must be a string.'
+        })
+      }
+
+      wlogger.debug(
+        'Executing electrumx/broadcastTransaction with this tx hex: ',
+        txHex
+      )
+
+      // Get data from ElectrumX server.
+      const electrumResponse = await _this._broadcastTransactionWithElectrum(txHex)
+      // console.log(`_utxosFromElectrumx(): ${JSON.stringify(electrumResponse, null, 2)}`)
+
+      // Pass the error message if ElectrumX reports an error.
+      if (electrumResponse instanceof Error) {
+        res.status(400)
+        return res.json({
+          success: false,
+          error: electrumResponse.message
+        })
+      }
+
+      res.status(200)
+      return res.json({
+        success: true,
+        txid: electrumResponse
+      })
+    } catch (err) {
+      wlogger.error('Error in electrumx.js/broadcastTransaction().', err)
+
+      return _this.errorHandler(err, res)
+    }
+  }
+
   // Returns a promise that resolves to block header data for a block height.
   // Expects input to be a height number, and input validation to have already
   // been done by parent, calling function.

src/routes/v3/slp.js

@@ -13,8 +13,12 @@ const Slpdb = require('./services/slpdb')
 // const strftime = require('strftime')
 const wlogger = require('../../util/winston-logging')
 
+// Instantiate a local copy of bch-js using the local REST API server.
+const LOCAL_RESTURL = process.env.LOCAL_RESTURL
+  ? process.env.LOCAL_RESTURL
+  : 'https://api.fullstack.cash/v3/'
 const BCHJS = require('@psf/bch-js')
-const bchjs = new BCHJS()
+const bchjs = new BCHJS({ restURL: LOCAL_RESTURL })
 
 // Used to convert error messages to strings, to safely pass to users.
 const util = require('util')
@@ -48,6 +52,7 @@ class Slp {
   constructor () {
     _this = this
 
+    // Encapsulate external libraries.
     _this.axios = axios
     _this.routeUtils = routeUtils
     _this.BigNumber = BigNumber
@@ -68,6 +73,7 @@ class Slp {
     _this.router.post('/convert', _this.convertAddressBulk)
     _this.router.post('/validateTxid', _this.validateBulk)
     _this.router.get('/validateTxid/:txid', _this.validateSingle)
+    _this.router.get('/validateTxid2/:txid', _this.validate2Single)
     _this.router.get('/txDetails/:txid', _this.txDetails)
     _this.router.get('/tokenStats/:tokenId', _this.tokenStats)
     _this.router.get(
@@ -1059,7 +1065,7 @@ class Slp {
    * @api {get} /slp/validateTxid/{txid}  Validate single SLP transaction by txid.
    * @apiName Validate single SLP transaction by txid.
    * @apiGroup SLP
-   * @apiDescription Validate single SLP transaction by txid.
+   * @apiDescription Validate single SLP transaction by txid, using SLPDB.
    *
    *
    * @apiExample Example usage:
@@ -1132,11 +1138,66 @@ class Slp {
     }
   }
 
-  // Returns a Boolean if the input TXID is a valid SLP TXID.
-  // async function isValidSlpTxid (txid) {
-  //   const isValid = await slpValidator.isValidSlpTxid(txid)
-  //   return isValid
-  // }
+  /**
+   * @api {get} /slp/validateTxid2/{txid}  Validate single SLP transaction by txid.
+   * @apiName Validate single SLP transaction by txid.
+   * @apiGroup SLP
+   * @apiDescription Validate single SLP transaction by txid, using slp-validate.
+   * Slower, less efficient method of validating an SLP TXID using the slp-validate
+   * npm library. This method is independent of SLPDB and can be used as a fall-back
+   * when SLPDB returns 'null' values.
+   *
+   *
+   * @apiExample Example usage:
+   * curl -X GET "https://api.fullstack.cash/v3/slp/validateTxid2/f7e5199ef6669ad4d078093b3ad56e355b6ab84567e59ad0f08a5ad0244f783a" -H "accept:application/json"
+   *
+   *
+   */
+  async validate2Single (req, res, next) {
+    try {
+      const txid = req.params.txid
+
+      // Validate input
+      if (!txid || txid === '') {
+        res.status(400)
+        return res.json({ error: 'txid can not be empty' })
+      }
+
+      wlogger.debug(
+        'Executing slp/validate2Single/:txid with this txid: ',
+        txid
+      )
+
+      // null by default.
+      // Default return value.
+      const result = {
+        txid: txid,
+        isValid: null,
+        msg: ''
+      }
+
+      // Request options
+      const opt = {
+        method: 'get',
+        baseURL: `${process.env.SLP_API_URL}slp/validate/${txid}`,
+        timeout: 10000 // Exit after 10 seconds.
+      }
+      const tokenRes = await _this.axios.request(opt)
+      // console.log(`tokenRes.data: ${JSON.stringify(tokenRes.data, null, 2)}`)
+      // console.log(`tokenRes: `, tokenRes)
+
+      // Overwrite the default value with the result from slp-api.
+      result.isValid = tokenRes.data.isValid
+
+      res.status(200)
+      return res.json(result)
+    } catch (err) {
+      // console.log('validate2Single error: ', err)
+      wlogger.error('Error in slp.ts/validate2Single().', err)
+
+      return _this.errorHandler(err, res)
+    }
+  }
 
   /**
    * @api {get} /slp/txDetails/{txid}  SLP transaction details.
@@ -1567,6 +1628,13 @@ class Slp {
         })
       }
 
+      if (!utxos[0].utxos) {
+        res.status(422)
+        return res.json({
+          error: 'Each element in array should have a utxos property'
+        })
+      }
+
       // Loop through each address and query the UTXOs for that element.
       for (let i = 0; i < utxos.length; i++) {
         const theseUtxos = utxos[i].utxos
@@ -1583,6 +1651,7 @@ class Slp {
       return res.json({ slpUtxos: utxos })
     } catch (err) {
       wlogger.error('Error in slp.js/hydrateUtxos().', err)
+      console.error('Error in slp.js/hydrateUtxos().', err)
 
       // Decode the error message.
       const { msg, status } = routeUtils.decodeError(err)

test/v3/a01-electrumx.js

@@ -906,6 +906,92 @@ describe('#ElectrumX Router', () => {
     })
   })
 
+  describe('#_broadcastTransactionWithElectrum', () => {
+    it('should return error object for invalid formatted transaction', async () => {
+      const invalidHex = mockData.txDetails.hex.substring(10)
+
+      stubMethodForUnitTests(
+        electrumxRoute.electrumx,
+        'request',
+        new Error('Error: the transaction was rejected by network rules.\n\nTX decode failed\n')
+      )
+
+      const result = await electrumxRoute._broadcastTransactionWithElectrum(invalidHex)
+
+      assert.instanceOf(result, Error)
+      assert.include(result.message, 'TX decode failed')
+    })
+
+    it('should return txid for valid transaction', async function () {
+      // We cannot send an actual broadcast transaction to mainnet
+      if (process.env.TEST !== 'unit') return this.skip()
+
+      const validHex = mockData.txDetails.hex
+
+      stubMethodForUnitTests(
+        electrumxRoute.electrumx,
+        'request',
+        mockData.txDetails.hash
+      )
+
+      const result = await electrumxRoute._broadcastTransactionWithElectrum(validHex)
+
+      assert.typeOf(result, 'string')
+      assert.equal(result, mockData.txDetails.hash)
+    })
+  })
+
+  describe('#broadcastTransaction', () => {
+    it('should throw an error for a non-string', async () => {
+      req.body = 456
+
+      stubMethodForUnitTests(
+        electrumxRoute,
+        '_broadcastTransactionWithElectrum',
+        new Error('request body must be a string.')
+      )
+
+      const result = await electrumxRoute.broadcastTransaction(req, res)
+
+      expectRouteError(res, result, 'request body must be a string.')
+    })
+
+    it('should throw an error object for invalid formatted transaction', async () => {
+      req.body.txHex = mockData.txDetails.hex.substring(10)
+
+      stubMethodForUnitTests(
+        electrumxRoute,
+        '_broadcastTransactionWithElectrum',
+        new Error('Error: the transaction was rejected by network rules.\n\nTX decode failed\n')
+      )
+
+      const result = await electrumxRoute.broadcastTransaction(req, res)
+
+      expectRouteError(res, result, 'TX decode failed')
+    })
+
+    it('should return txid for valid transaction', async function () {
+      // We cannot send an actual broadcast transaction to mainnet
+      if (process.env.TEST !== 'unit') return this.skip()
+
+      req.body.txHex = mockData.txDetails.hex
+
+      stubMethodForUnitTests(
+        electrumxRoute,
+        '_broadcastTransactionWithElectrum',
+        mockData.txDetails.hash
+      )
+
+      const result = await electrumxRoute.broadcastTransaction(req, res)
+
+      assert.property(result, 'success')
+      assert.equal(result.success, true)
+
+      assert.property(result, 'txid')
+      assert.equal(result.txid, mockData.txDetails.hash)
+    })
+  })
+
   describe('#_balanceFromElectrumx', () => {
     it('should throw error for invalid address', async () => {
       try {

test/v3/integration/slp.js

@@ -213,4 +213,50 @@ describe('#slp', () => {
       assert.equal(result.slpUtxos[2].utxos.length, 2)
     })
   })
+
+  describe('#validate2Single', () => {
+    it('should invalidate a known invalid TXID', async () => {
+      const txid =
+        'f7e5199ef6669ad4d078093b3ad56e355b6ab84567e59ad0f08a5ad0244f783a'
+
+      req.params.txid = txid
+      const result = await slp.validate2Single(req, res)
+      // console.log(`result: ${JSON.stringify(result, null, 2)}`)
+
+      assert.equal(result.txid, txid)
+      assert.equal(result.isValid, false)
+    })
+
+    it('should validate a known valid TXID', async () => {
+      const txid =
+        '3a4b628cbcc183ab376d44ce5252325f042268307ffa4a53443e92b6d24fb488'
+
+      req.params.txid = txid
+      const result = await slp.validate2Single(req, res)
+      // console.log(`result: ${JSON.stringify(result, null, 2)}`)
+
+      assert.equal(result.txid, txid)
+      assert.equal(result.isValid, true)
+    })
+
+    // CT 10-11-2020: This test is valid, but because of the cacheing built
+    // into slp-validate, it will not consistently pass or fail. To manually
+    // Run this test, re-start slp-api or find a token txid with a long DAG.
+    // it('should cancel if validation takes too long', async () => {
+    //   const txid =
+    //     'eacb1085dfa296fef6d4ae2c0f4529a1bef096dd2325bdcc6dcb5241b3bdb579'
+    //     // '2822f7d21e17ca8c36846613dc52caf0d03e355a13022a6cec066d197e59bb27'
+    //
+    //   req.params.txid = txid
+    //   const result = await slp.validate2Single(req, res)
+    //   // console.log(`result: ${JSON.stringify(result, null, 2)}`)
+    //
+    //   assert.isAbove(res.statusCode, 499, 'HTTP status code 503 expected.')
+    //   assert.include(
+    //     result.error,
+    //     'Could not communicate with full node',
+    //     'Error message expected'
+    //   )
+    // })
+  })
 })

test/v3/mocks/slp-mocks.js

@@ -352,7 +352,8 @@ const mockTxHistory = [
         e: {
           h: '7bdd586ebd1e5f3dfd5295ab6e896c48b25855ab77a72c035ce1e7aacc965c2d',
           i: 1,
-          s: 'RzBEAiAsu5o9EnxgZChjxKygxhGLhlfxJJbQfd4PP/vp2od3fAIgPpMqg+Sp4YpiInQZ6weJwELq8LEIrHXJpueBz7yF5gRBIQLsyL3809mRphc/+tPAcTQO5bi0kqZRFKpKIHXE3qN8Rw==',
+          s:
+            'RzBEAiAsu5o9EnxgZChjxKygxhGLhlfxJJbQfd4PP/vp2od3fAIgPpMqg+Sp4YpiInQZ6weJwELq8LEIrHXJpueBz7yF5gRBIQLsyL3809mRphc/+tPAcTQO5bi0kqZRFKpKIHXE3qN8Rw==',
           a: 'simpleledger:qrrrpqmdkggpnw0czwg0jgcjd7yhu25jy5zxh2gqdq'
         }
       },
@@ -361,7 +362,8 @@ const mockTxHistory = [
         e: {
           h: 'df49feff24dc34a10a44a0cbd7c908d964801ec7218512c84574fbce698535f0',
           i: 3,
-          s: 'SDBFAiEAhW3zbKTlPrOXD2E2oEcNof6vCMPGYIg8vOVSE9c8IakCIFLg/gxydG9eL8HMAzkScGElKWJRnfhVMpMHU3evNcrZQSEDRS7F+pSC8OxSldsT4FctJLZBU7f2+FDiE05ae1xqtN0=',
+          s:
+            'SDBFAiEAhW3zbKTlPrOXD2E2oEcNof6vCMPGYIg8vOVSE9c8IakCIFLg/gxydG9eL8HMAzkScGElKWJRnfhVMpMHU3evNcrZQSEDRS7F+pSC8OxSldsT4FctJLZBU7f2+FDiE05ae1xqtN0=',
           a: 'simpleledger:qpkpeqfslejw5pptzcy25h2jxhsc9k0vts43n26up0'
         }
       }
@@ -371,7 +373,8 @@ const mockTxHistory = [
         e: {
           v: 0,
           i: 0,
-          s: 'agRTTFAAAQEEU0VORCA46XxdfTWFosvz+VgMgsozmF+csIRdTcziIMtwn5U4sAgAAAAAAJiWgAgAAAAAJHfU+g=='
+          s:
+            'agRTTFAAAQEEU0VORCA46XxdfTWFosvz+VgMgsozmF+csIRdTcziIMtwn5U4sAgAAAAAAJiWgAgAAAAAJHfU+g=='
         }
       },
       {
@@ -402,7 +405,8 @@ const mockTxHistory = [
     slp: {
       detail: {
         decimals: 8,
-        tokenIdHex: '38e97c5d7d3585a2cbf3f9580c82ca33985f9cb0845d4dcce220cb709f9538b0',
+        tokenIdHex:
+          '38e97c5d7d3585a2cbf3f9580c82ca33985f9cb0845d4dcce220cb709f9538b0',
         transactionType: 'SEND',
         versionType: 1,
         documentUri: 'psfoundation.cash',
@@ -439,7 +443,8 @@ const mockTxHistory = [
         e: {
           h: 'e4e1e1f6b502cbd42f69b919634cea3e37fc8595e6ca800e0a7d8f6dcdfb249e',
           i: 3,
-          s: 'SDBFAiEAjCGRmU28x24LMTwg5XqC+fLf3zGhTYCsSWpmF8Eshq0CIAJhxAKMbwKWC4ASmjWzplpno2ch+hGNUD6HNWOdbd4SQSECeRsZo5Fl29g0A9bfJo1E/WIdowWBsLblyxWnEB7ViFE=',
+          s:
+            'SDBFAiEAjCGRmU28x24LMTwg5XqC+fLf3zGhTYCsSWpmF8Eshq0CIAJhxAKMbwKWC4ASmjWzplpno2ch+hGNUD6HNWOdbd4SQSECeRsZo5Fl29g0A9bfJo1E/WIdowWBsLblyxWnEB7ViFE=',
           a: 'simpleledger:qpvsg9vl9a5mlf37a7n3yce6pktdctn73qznkmw3s7'
         }
       },
@@ -448,7 +453,8 @@ const mockTxHistory = [
         e: {
           h: '438420345dd8b7fb4ea74aaf2e3090f44899bf3c71662243946a441de6dae720',
           i: 2,
-          s: 'SDBFAiEAhmLYL4QY3mvZo3/i0XG9PJAYMruw3MaGOLJ3Z4si7hwCIAaaGwRnj/cZK3L/KKFBoMtItpGRZ10GowNN//vgn6PKQSECeRsZo5Fl29g0A9bfJo1E/WIdowWBsLblyxWnEB7ViFE=',
+          s:
+            'SDBFAiEAhmLYL4QY3mvZo3/i0XG9PJAYMruw3MaGOLJ3Z4si7hwCIAaaGwRnj/cZK3L/KKFBoMtItpGRZ10GowNN//vgn6PKQSECeRsZo5Fl29g0A9bfJo1E/WIdowWBsLblyxWnEB7ViFE=',
           a: 'simpleledger:qpvsg9vl9a5mlf37a7n3yce6pktdctn73qznkmw3s7'
         }
       }
@@ -458,7 +464,8 @@ const mockTxHistory = [
         e: {
           v: 0,
           i: 0,
-          s: 'agRTTFAAAQEEU0VORCCk+1wtoaoGTiUBikP5FlBABx2emEuhkMIip/WQU6+EsggAAAAAAA9CQAgAAAAXQnHEwA=='
+          s:
+            'agRTTFAAAQEEU0VORCCk+1wtoaoGTiUBikP5FlBABx2emEuhkMIip/WQU6+EsggAAAAAAA9CQAgAAAAXQnHEwA=='
         }
       },
       {
@@ -489,7 +496,8 @@ const mockTxHistory = [
     slp: {
       detail: {
         decimals: 2,
-        tokenIdHex: 'a4fb5c2da1aa064e25018a43f9165040071d9e984ba190c222a7f59053af84b2',
+        tokenIdHex:
+          'a4fb5c2da1aa064e25018a43f9165040071d9e984ba190c222a7f59053af84b2',
         transactionType: 'SEND',
         versionType: 1,
         documentUri: 'troutsblog.com',

test/v3/slp.js

@@ -362,6 +362,7 @@ describe('#SLP', () => {
       assert.hasAllKeys(result, ['error'])
       assert.include(result.error, 'Array too large')
     })
+
     it('returns proper error when downstream service stalls', async () => {
       // Mock the timeout error.
       sandbox.stub(slpRoute.axios, 'request').throws({ code: 'ECONNABORTED' })
@@ -462,6 +463,80 @@ describe('#SLP', () => {
     })
   })
 
+  describe('#validate2Single', () => {
+    it('should throw 400 if txid is empty', async () => {
+      req.params.txid = ''
+      const result = await slpRoute.validate2Single(req, res)
+      // console.log(`result: ${util.inspect(result)}`)
+
+      assert.hasAllKeys(result, ['error'])
+      assert.include(result.error, 'txid can not be empty')
+    })
+
+    it('should invalidate a known invalid TXID', async () => {
+      if (process.env.TEST === 'unit') {
+        // Mock to prevent live network connection.
+        sandbox
+          .stub(slpRoute.axios, 'request')
+          .resolves({ data: { isValid: false } })
+      }
+
+      const txid =
+        'f7e5199ef6669ad4d078093b3ad56e355b6ab84567e59ad0f08a5ad0244f783a'
+
+      req.params.txid = txid
+      const result = await slpRoute.validate2Single(req, res)
+      // console.log(`result: ${JSON.stringify(result, null, 2)}`)
+
+      assert.equal(result.txid, txid)
+      assert.equal(result.isValid, false)
+    })
+
+    it('should validate a known valid TXID', async () => {
+      if (process.env.TEST === 'unit') {
+        // Mock to prevent live network connection.
+        sandbox
+          .stub(slpRoute.axios, 'request')
+          .resolves({ data: { isValid: true } })
+      }
+
+      const txid =
+        '3a4b628cbcc183ab376d44ce5252325f042268307ffa4a53443e92b6d24fb488'
+
+      req.params.txid = txid
+      const result = await slpRoute.validate2Single(req, res)
+      // console.log(`result: ${JSON.stringify(result, null, 2)}`)
+
+      assert.equal(result.txid, txid)
+      assert.equal(result.isValid, true)
+    })
+
+    // This test can only be run as a mocked unit test. It's too inconsistent
+    // to run as an integration test, due to the caching built into slp-validate.
+    if (process.env.TEST === 'unit') {
+      it('should cancel if validation takes too long', async () => {
+        // Mock the timeout error.
+        sandbox.stub(slpRoute.axios, 'request').throws({
+          code: 'ECONNABORTED'
+        })
+
+        const txid =
+          'eacb1085dfa296fef6d4ae2c0f4529a1bef096dd2325bdcc6dcb5241b3bdb579'
+
+        req.params.txid = txid
+        const result = await slpRoute.validate2Single(req, res)
+        // console.log(`result: ${JSON.stringify(result, null, 2)}`)
+
+        assert.isAbove(res.statusCode, 499, 'HTTP status code 503 expected.')
+        assert.include(
+          result.error,
+          'Could not communicate with full node',
+          'Error message expected'
+        )
+      })
+    }
+  })
+
   describe('tokenStats()', () => {
     it('should throw 400 if tokenID is empty', async () => {
       req.params.tokenId = ''
@@ -1034,6 +1109,34 @@ describe('#SLP', () => {
       assert.property(result.slpUtxos[0].utxos[1], 'tokenType')
       assert.property(result.slpUtxos[0].utxos[1], 'tokenQty')
     })
+
+    it('should throw error for missing properties', async () => {
+      const utxos = [
+        {
+          height: 639443,
+          tx_hash:
+            '30707fffb9b295a06a68d217f49c198e9e1dbe1edc3874a0928ca1905f1709df',
+          tx_pos: 0,
+          value: 6000
+        },
+        {
+          height: 639443,
+          tx_hash:
+            '8962566e413501224d178a02effc89be5ac0d8e4195f617415d443dc4c38fe50',
+          tx_pos: 1,
+          value: 546
+        }
+      ]
+
+      req.body.utxos = utxos
+      const result = await slpRoute.hydrateUtxos(req, res)
+
+      assert.hasAllKeys(result, ['error'])
+      assert.include(
+        result.error,
+        'Each element in array should have a utxos property'
+      )
+    })
   })
 })