Merge pull request bitcoin#760 from Roasbeef/bip-158-test-vectors

BIP-0158: add test cases for OP_RETURN with op codes, empty filter

Author: luke-jr

bip-0158.mediawiki

@@ -281,10 +281,10 @@ following items for each transaction in a block:
 
 Any "nil" items MUST NOT be included into the final set of filter elements.
 
-We exclude all <code>OP_RETURN</code> outputs in order to allow filters to
-easily be committed to in the future via a soft-fork. A likely area for future
-commitments is an additional <code>OP_RETURN</code> output in the coinbase
-transaction similar to the current witness commitment
+We exclude all outputs that start with <code>OP_RETURN</code> in order to allow
+filters to easily be committed to in the future via a soft-fork. A likely area
+for future commitments is an additional <code>OP_RETURN</code> output in the
+coinbase transaction similar to the current witness commitment
 <ref>https://github.com/bitcoin/bips/blob/master/bip-0141.mediawiki</rev>. By
 excluding all <code>OP_RETURN</code> outputs we avoid a circular dependency
 between the commitment, and the item being committed to.

bip-0158/gentestvectors.go

@@ -33,11 +33,13 @@ var (
 		{0, "Genesis block"},
 		{2, ""},
 		{3, ""},
+		{15007, "Tx has non-standard OP_RETURN output followed by opcodes"},
 		{49291, "Tx pays to empty output script"},
 		{180480, "Tx spends from empty output script"},
 		{926485, "Duplicate pushdata 913bcc2be49cb534c20474c4dee1e9c4c317e7eb"},
 		{987876, "Coinbase tx has unparseable output script"},
 		{1263442, "Includes witness data"},
+		{1414221, "Empty data"},
 	}
 
 	defaultBtcdDir         = btcutil.AppDataDir("btcd", false)

bip-0158/go.mod

@@ -0,0 +1,7 @@
+module github.com/bitcoin/bips/bip-0158
+
+require (
+	github.com/btcsuite/btcd v0.0.0-20190115013929-ed77733ec07d
+	github.com/btcsuite/btcutil v0.0.0-20190207003914-4c204d697803
+	github.com/davecgh/go-spew v1.1.1
+)

bip-0158/go.sum

@@ -0,0 +1,54 @@
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