address: use input first errors, easier detection

src/address.js

@@ -4,9 +4,10 @@ var networks = require('./networks')
 var scripts = require('./scripts')
 var types = require('./types')
 
-function fromBase58Check (string) {
-  var payload = base58check.decode(string)
-  if (payload.length !== 21) throw new TypeError('Invalid address length')
+function fromBase58Check (address) {
+  var payload = base58check.decode(address)
+  if (payload.length < 21) throw new TypeError(address + ' is too short')
+  if (payload.length > 21) throw new TypeError(address + ' is too long')
 
   var version = payload.readUInt8(0)
   var hash = payload.slice(1)
@@ -37,7 +38,8 @@ function toOutputScript (address, network) {
   network = network || networks.bitcoin
 
   var payload = base58check.decode(address)
-  if (payload.length !== 21) throw new TypeError('Invalid hash length')
+  if (payload.length < 21) throw new TypeError(address + ' is too short')
+  if (payload.length > 21) throw new TypeError(address + ' is too long')
 
   var version = payload.readUInt8(0)
   var hash = payload.slice(1)

test/address.js

@@ -20,17 +20,17 @@ describe('Address', function () {
     })
 
     fixtures.invalid.fromBase58Check.forEach(function (f) {
-      it('throws on ' + f.description, function () {
+      it('throws on ' + f.exception, function () {
         assert.throws(function () {
-          Address.fromBase58Check(f.base58check)
-        }, new RegExp(f.exception))
+          Address.fromBase58Check(f.address)
+        }, new RegExp(f.address + ' ' + f.exception))
       })
     })
   })
 
   describe('fromOutputScript', function () {
     fixtures.valid.forEach(function (f) {
-      it('parses ' + f.script + ' (' + f.network + ')', function () {
+      it('parses ' + f.script.slice(0, 30) + '... (' + f.network + ')', function () {
         var script = Script.fromASM(f.script)
         var address = Address.fromOutputScript(script, networks[f.network])
 
@@ -39,12 +39,12 @@ describe('Address', function () {
     })
 
     fixtures.invalid.fromOutputScript.forEach(function (f) {
-      it('throws when ' + f.description, function () {
+      it('throws when ' + f.script.slice(0, 30) + '... ' + f.exception, function () {
         var script = Script.fromASM(f.script)
 
         assert.throws(function () {
           Address.fromOutputScript(script)
-        }, new RegExp(f.description))
+        }, new RegExp(f.script + ' ' + f.exception))
       })
     })
   })
@@ -63,7 +63,7 @@ describe('Address', function () {
     fixtures.valid.forEach(function (f) {
       var network = networks[f.network]
 
-      it('exports ' + f.script + '(' + f.network + ')', function () {
+      it('exports ' + f.script.slice(0, 30) + '... (' + f.network + ')', function () {
         var script = Address.toOutputScript(f.base58check, network)
 
         assert.strictEqual(script.toASM(), f.script)
@@ -71,10 +71,10 @@ describe('Address', function () {
     })
 
     fixtures.invalid.toOutputScript.forEach(function (f) {
-      it('throws when ' + f.description, function () {
+      it('throws when ' + f.exception, function () {
         assert.throws(function () {
           Address.toOutputScript(f.address)
-        }, new RegExp(f.description))
+        }, new RegExp(f.address + ' ' + f.exception))
       })
     })
   })

test/fixtures/address.json

@@ -32,33 +32,31 @@
   "invalid": {
     "fromBase58Check": [
       {
-        "description": "hash too short",
-        "base58check": "7SeEnXWPaCCALbVrTnszCVGfRU8cGfx",
-        "exception": "Invalid address length"
+        "address": "7SeEnXWPaCCALbVrTnszCVGfRU8cGfx",
+        "exception": "is too short"
       },
       {
-        "description": "hash too long",
-        "base58check": "j9ywUkWg2fTQrouxxh5rSZhRvrjMkEUfuiKe",
-        "exception": "Invalid address length"
+        "address": "j9ywUkWg2fTQrouxxh5rSZhRvrjMkEUfuiKe",
+        "exception": "is too long"
       }
     ],
     "fromOutputScript": [
       {
-        "description": "has no matching Address",
+        "exception": "has no matching Address",
         "script": "031f1e68f82112b373f0fe980b3a89d212d2b5c01fb51eb25acb8b4c4b4299ce95 OP_CHECKSIG"
       },
       {
-        "description": "has no matching Address",
+        "exception": "has no matching Address",
         "script": "OP_TRUE 032487c2a32f7c8d57d2a93906a6457afd00697925b0e6e145d89af6d3bca33016 02308673d16987eaa010e540901cc6fe3695e758c19f46ce604e174dac315e685a OP_2 OP_CHECKMULTISIG"
       },
       {
-        "description": "has no matching Address",
+        "exception": "has no matching Address",
         "script": "OP_RETURN 06deadbeef03f895a2ad89fb6d696497af486cb7c644a27aa568c7a18dd06113401115185474"
       }
     ],
     "toOutputScript": [
       {
-        "description": "24kPZCmVgzfkpGdXExy56234MRHrsqQxNWE has no matching Script",
+        "exception": "has no matching Script",
         "address": "24kPZCmVgzfkpGdXExy56234MRHrsqQxNWE"
       }
     ]