Function TestComputePkScript

txscript/pkscript_test.go:191–441

TestComputePkScript ensures that we can correctly re-derive an output's pkScript by looking at the input's signature script/witness attempting to spend it.

(t *testing.T)

// pkScript by looking at the input's signature script/witness attempting to
// spend it.
func TestComputePkScript(t *testing.T) {
	t.Parallel()

	tests := []struct {
		name      string
		sigScript []byte
		witness   wire.TxWitness
		class     ScriptClass
		pkScript  []byte
	}{
		{
			name:      "empty sigScript and witness",
			sigScript: nil,
			witness:   nil,
			class:     NonStandardTy,
			pkScript:  nil,
		},
		{
			name: "P2PKH sigScript",
			sigScript: []byte{
				// OP_DATA_73,
				0x49,
				// <73-byte sig>
				0x30, 0x44, 0x02, 0x20, 0x65, 0x92, 0xd8, 0x8e,
				0x1d, 0x0a, 0x4a, 0x3c, 0xc5, 0x9f, 0x92, 0xae,
				0xfe, 0x62, 0x54, 0x74, 0xa9, 0x4d, 0x13, 0xa5,
				0x9f, 0x84, 0x97, 0x78, 0xfc, 0xe7, 0xdf, 0x4b,
				0xe0, 0xc2, 0x28, 0xd8, 0x02, 0x20, 0x2d, 0xea,
				0x36, 0x96, 0x19, 0x1f, 0xb7, 0x00, 0xc5, 0xa7,
				0x7e, 0x22, 0xd9, 0xfb, 0x6b, 0x42, 0x67, 0x42,
				0xa4, 0x2c, 0xac, 0xdb, 0x74, 0xa2, 0x7c, 0x43,
				0xcd, 0x89, 0xa0, 0xf9, 0x44, 0x54, 0x12, 0x74,
				0x01,
				// OP_DATA_33
				0x21,
				// <33-byte compressed pubkey>
				0x02, 0x7d, 0x56, 0x12, 0x09, 0x75, 0x31, 0xc2,
				0x17, 0xfd, 0xd4, 0xd2, 0xe1, 0x7a, 0x35, 0x4b,
				0x17, 0xf2, 0x7a, 0xef, 0x30, 0x9f, 0xb2, 0x7f,
				0x1f, 0x1f, 0x7b, 0x73, 0x7d, 0x9a, 0x24, 0x49,
				0x90,
			},
			witness: nil,
			class:   PubKeyHashTy,
			pkScript: []byte{
				// OP_DUP
				0x76,
				// OP_HASH160
				0xa9,
				// OP_DATA_20
				0x14,
				// <20-byte pubkey hash>
				0xf0, 0x7a, 0xb8, 0xce, 0x72, 0xda, 0x4e, 0x76,
				0x0b, 0x74, 0x7d, 0x48, 0xd6, 0x65, 0xec, 0x96,
				0xad, 0xf0, 0x24, 0xf5,
				// OP_EQUALVERIFY
				0x88,
				// OP_CHECKSIG