Exclude modules with init() in tests from includes lists (elastic#12650)

dev-tools/cmd/module_include_list/module_include_list.go

@@ -99,19 +99,18 @@ func main() {
 	// Build import paths.
 	var imports []string
 	for _, dir := range dirs {
-		// Skip dirs that have no .go files.
-		goFiles, err := filepath.Glob(filepath.Join(dir, "*.go"))
-		if err != nil {
-			log.Fatal("Failed checking for .go files in package dir: %v", err)
-		}
-		if len(goFiles) == 0 {
-			continue
-		}
-
 		// Skip packages without an init() function because that cannot register
 		// anything as a side-effect of being imported (e.g. filebeat/input/file).
 		var foundInitMethod bool
+		goFiles, err := filepath.Glob(filepath.Join(dir, "*.go"))
+		if err != nil {
+			log.Fatalf("Failed checking for .go files in package dir: %v", err)
+		}
 		for _, f := range goFiles {
+			// Skip test files
+			if strings.HasSuffix(f, "_test.go") {
+				continue
+			}
 			if hasInitMethod(f) {
 				foundInitMethod = true
 				break