tests: add independent error message for missing witnessScript

src/transaction_builder.js

@@ -332,11 +332,14 @@ function prepareInput (input, kpPubKey, redeemScript, witnessValue, witnessScrip
     signScript = witnessScript
   } else if (input.prevOutType) {
     // embedded scripts are not possible without a redeemScript
-    if (input.prevOutType === scriptTypes.P2SH ||
-      input.prevOutType === scriptTypes.P2WSH) {
+    if (input.prevOutType === scriptTypes.P2SH) {
       throw new Error('PrevOutScript is ' + input.prevOutType + ', requires redeemScript')
     }
 
+    if (input.prevOutType === scriptTypes.P2WSH) {
+      throw new Error('PrevOutScript is ' + input.prevOutType + ', requires witnessScript')
+    }
+
     prevOutType = input.prevOutType
     prevOutScript = input.prevOutScript
     expanded = expandOutput(input.prevOutScript, input.prevOutType, kpPubKey)

test/fixtures/transaction_builder.json

@@ -1966,6 +1966,28 @@
           }
         ]
       },
+      {
+        "exception": "PrevOutScript is witnessscripthash, requires witnessScript",
+        "inputs": [
+          {
+            "txId": "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
+            "vout": 1,
+            "prevTxScript": "OP_0 0f9ea7bae7166c980169059e39443ed13324495b0d6678ce716262e879591210",
+            "signs": [
+              {
+                "keyPair": "KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qYjgd9M7rFU73sVHnoWn",
+                "throws": true
+              }
+            ]
+          }
+        ],
+        "outputs": [
+          {
+            "script": "OP_DUP OP_HASH160 aa4d7985c57e011a8b3dd8e0e5a73aaef41629c5 OP_EQUALVERIFY OP_CHECKSIG",
+            "value": 1000
+          }
+        ]
+      },
       {
         "exception": "Inconsistent redeemScript",
         "network": "testnet",