Merge remote-tracking branch 'ethereum/conversion' into conversion

1 files changed, 48 insertions, 0 deletions

diff --git a/Godeps/_workspace/src/github.com/ethereum/ethash/js/test/seedHash.js b/Godeps/_workspace/src/github.com/ethereum/ethash/js/test/seedHash.js
new file mode 100644
index 000000000..a3666a9ed
--- /dev/null
+++ b/Godeps/_workspace/src/github.com/ethereum/ethash/js/test/seedHash.js
@@ -0,0 +1,48 @@
+var tape = require('tape');
+const ethash = require('../ethash.js');
+
+tape('seed hash', function(t) {
+
+  t.test('seed should match TRUTH', function(st) {
+    const seed = '290decd9548b62a8d60345a988386fc84ba6bc95484008f6362f93160ef3e563';
+    const blockNum = 30000;
+
+    var r = new Buffer(ethash.calcSeed(blockNum));
+    st.equal(r.toString('hex'), seed);
+
+    st.end();
+  });
+
+  t.test('seed should match TRUTH2', function(st) {
+    const seed = '510e4e770828ddbf7f7b00ab00a9f6adaf81c0dc9cc85f1f8249c256942d61d9';
+    const blockNum = 60000;
+
+    var r = new Buffer(ethash.calcSeed(blockNum));
+    st.equal(r.toString('hex'), seed);
+
+    st.end();
+  });
+
+  t.test('seed should match TRUTH3', function(st) {
+    const seed = '510e4e770828ddbf7f7b00ab00a9f6adaf81c0dc9cc85f1f8249c256942d61d9';
+    const blockNum = 60700;
+
+    var r = new Buffer(ethash.calcSeed(blockNum));
+    st.equal(r.toString('hex'), seed);
+
+    st.end();
+  });
+
+  t.test('randomized tests', function(st) {
+    for (var i = 0; i < 100; i++) {
+      var x = Math.floor(ethash.params.EPOCH_LENGTH * 2048 * Math.random());
+      st.equal(ethash.calcSeed(x).toString('hex'), ethash.calcSeed(Math.floor(x / ethash.params.EPOCH_LENGTH) * ethash.params.EPOCH_LENGTH ).toString('hex'));
+    }
+    st.end();
+  });
+  // '510e4e770828ddbf7f7b00ab00a9f6adaf81c0dc9cc85f1f8249c256942d61d9'
+  // [7:13:32 PM] Matthew Wampler-Doty: >>> x = randint(0,700000)
+  // 
+  // >>> pyethash.get_seedhash(x).encode('hex') == pyethash.get_seedhash((x // pyethash.EPOCH_LENGTH) * pyethash.EPOCH_LENGTH).encode('hex')
+
+});