From d5a2a68ea2a96c7fff9c8535ee4cc2a7def68998 Mon Sep 17 00:00:00 2001
From: Daniel Cousens <github@dcousens.com>
Date: Sun, 10 Dec 2017 16:37:54 +1100
Subject: [PATCH] add integration tests for block height decoding
---
test/integration/blocks.js | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
create mode 100644 test/integration/blocks.js
diff --git a/test/integration/blocks.js b/test/integration/blocks.js
new file mode 100644
index 0000000..648a321
--- /dev/null
+++ b/test/integration/blocks.js
@@ -0,0 +1,21 @@
+/* global describe, it */
+
+var assert = require('assert')
+var bitcoin = require('../../')
+
+describe('bitcoinjs-lib (blocks)', function () {
+ it('can extract a height from a CoinBase transaction', function () {
+ // from 00000000000000000097669cdca131f24d40c4cc7d80eaa65967a2d09acf6ce6
+ let txHex = '010000000001010000000000000000000000000000000000000000000000000000000000000000ffffffff50037f9a07174d696e656420627920416e74506f6f6c685b205a2b1f7bfabe6d6d36afe1910eca9405b66f97750940a656e38e2c0312958190ff8e98fd16761d220400000000000000aa340000d49f0000ffffffff02b07fc366000000001976a9148349212dc27ce3ab4c5b29b85c4dec643d764b1788ac0000000000000000266a24aa21a9ed72d9432948505e3d3062f1307a3f027a5dea846ff85e47159680919c12bf1e400120000000000000000000000000000000000000000000000000000000000000000000000000'
+ let tx = bitcoin.Transaction.fromHex(txHex)
+
+ assert.strictEqual(tx.ins.length, 1)
+ let script = tx.ins[0].script
+// bitcoin.script.decompile(script) // returns [] :(
+
+ assert.strictEqual(script[0], 0x03)
+ let heightBuffer = script.slice(1, 4)
+ let height = bitcoin.script.number.decode(heightBuffer)
+ assert.strictEqual(height, 498303)
+ })
+})