tests: revert "tests: remove whitelist feature (ethereum#23297)"

This reverts commit 85afdee.

tests/init_test.go

@@ -89,10 +89,11 @@ func findLine(data []byte, offset int64) (line int) {
 
 // testMatcher controls skipping and chain config assignment to tests.
 type testMatcher struct {
-	configpat   []testConfig
-	failpat     []testFailure
-	skiploadpat []*regexp.Regexp
-	slowpat     []*regexp.Regexp
+	configpat    []testConfig
+	failpat      []testFailure
+	skiploadpat  []*regexp.Regexp
+	slowpat      []*regexp.Regexp
+	whitelistpat *regexp.Regexp
 }
 
 type testConfig struct {
@@ -123,6 +124,10 @@ func (tm *testMatcher) fails(pattern string, reason string) {
 	tm.failpat = append(tm.failpat, testFailure{regexp.MustCompile(pattern), reason})
 }
 
+func (tm *testMatcher) whitelist(pattern string) {
+	tm.whitelistpat = regexp.MustCompile(pattern)
+}
+
 // config defines chain config for tests matching the pattern.
 func (tm *testMatcher) config(pattern string, cfg params.ChainConfig) {
 	tm.configpat = append(tm.configpat, testConfig{regexp.MustCompile(pattern), cfg})
@@ -212,6 +217,11 @@ func (tm *testMatcher) runTestFile(t *testing.T, path, name string, runTest inte
 	if r, _ := tm.findSkip(name); r != "" {
 		t.Skip(r)
 	}
+	if tm.whitelistpat != nil {
+		if !tm.whitelistpat.MatchString(name) {
+			t.Skip("Skipped by whitelist")
+		}
+	}
 	t.Parallel()
 
 	// Load the file as map[string]<testType>.
@@ -265,3 +275,14 @@ func runTestFunc(runTest interface{}, t *testing.T, name string, m reflect.Value
 		m.MapIndex(reflect.ValueOf(key)),
 	})
 }
+
+func TestMatcherWhitelist(t *testing.T) {
+	t.Parallel()
+	tm := new(testMatcher)
+	tm.whitelist("invalid*")
+	tm.walk(t, rlpTestDir, func(t *testing.T, name string, test *RLPTest) {
+		if name[:len("invalidRLPTest.json")] != "invalidRLPTest.json" {
+			t.Fatalf("invalid test found: %s != invalidRLPTest.json", name)
+		}
+	})
+}