Function testScripts

txscript/reference_test.go:534–701

testScripts ensures all of the passed script tests execute with the expected results with or without using a signature cache, as specified by the parameter.

(t *testing.T, tests [][]interface{}, useSigCache bool)

// results with or without using a signature cache, as specified by the
// parameter.
func testScripts(t *testing.T, tests [][]interface{}, useSigCache bool) {
	// Create a signature cache to use only if requested.
	var sigCache *SigCache
	if useSigCache {
		sigCache = NewSigCache(10)
	}

	for i, test := range tests {
		// "Format is: [[wit..., amount]?, scriptSig, scriptPubKey,
		//    flags, expected_scripterror, ... comments]"

		// Skip single line comments.
		if len(test) == 1 {
			continue
		}

		// Taproot entries in the latest Bitcoin Core script_tests.json rely on
		// placeholder macros (for example #SCRIPT# and #CONTROLBLOCK#).  btcd
		// validates taproot separately via TestTaprootReferenceTests.
		if hasTaprootScriptTest(test) {
			continue
		}

		// Construct a name for the test based on the comment and test
		// data.
		name, err := scriptTestName(test)
		if err != nil {
			t.Errorf("TestScripts: invalid test #%d: %v", i, err)
			continue
		}

		var (
			witness  wire.TxWitness
			inputAmt int64
		)

		// When the first field of the test data is a slice it contains
		// witness data and everything else is offset by 1 as a result.
		witnessOffset := scriptTestWitnessOffset(test)
		if witnessOffset != 0 {
			witnessData := test[0].([]interface{})

			// If this is a witness test, then the final element
			// within the slice is the input amount, so we ignore
			// all but the last element in order to parse the
			// witness stack.
			strWitnesses := witnessData[:len(witnessData)-1]
			witness, err = parseWitnessStack(strWitnesses)
			if err != nil {
				t.Errorf("%s: can't parse witness; %v", name, err)
				continue
			}

			inputAmt, err = newAmount(
				witnessData[len(witnessData)-1].(float64),
			)
			if err != nil {
				t.Errorf("%s: can't parse input amt: %v",