chore: import upstream snapshot with attribution

internal/resolver/testpath.go

@@ -0,0 +1,66 @@
+package resolver
+
+import (
+	"path/filepath"
+	"strings"
+)
+
+// isTestFilePath reports whether a source path follows a recognised test
+// convention.
+//
+// PURPOSE: let the Temporal orphan detector drop dispatches that
+// originate in test fixtures (the dominant broken_dispatch false
+// positive) without depending on Node.Meta test flags — which are not
+// re-stamped on the incremental-reindex path.
+//
+// RATIONALE: a verbatim port of internal/indexer.IsTestFile. The
+// resolver cannot import the indexer package (indexer → resolver is the
+// established import direction; the reverse would be a cycle), so the
+// predicate is duplicated here. It is intentionally identical in
+// behaviour; the canonical home is internal/indexer/testpattern.go and a
+// future refactor should consolidate both (plus the analysis/* copies)
+// into a leaf internal/pathutil package.
+//
+// KEYWORDS: test-file, predicate, temporal, broken_dispatch, no-cycle
+func isTestFilePath(path string) bool {
+	if path == "" {
+		return false
+	}
+	// Directory-based hints first — covers projects that don't follow
+	// the per-file naming convention.
+	dir := filepath.ToSlash(path)
+	for _, marker := range []string{"/__tests__/", "/tests/", "/test/", "/spec/"} {
+		if strings.Contains(dir, marker) {
+			return true
+		}
+	}
+	if strings.HasPrefix(dir, "tests/") || strings.HasPrefix(dir, "test/") || strings.HasPrefix(dir, "spec/") {
+		return true
+	}
+
+	base := filepath.Base(path)
+	ext := strings.ToLower(filepath.Ext(base))
+	stem := strings.TrimSuffix(base, ext)
+
+	switch ext {
+	case ".go":
+		return strings.HasSuffix(stem, "_test")
+	case ".ts", ".tsx", ".js", ".jsx", ".mts", ".cts", ".mjs", ".cjs":
+		return strings.HasSuffix(stem, ".test") || strings.HasSuffix(stem, ".spec")
+	case ".py":
+		return strings.HasPrefix(stem, "test_") || strings.HasSuffix(stem, "_test")
+	case ".dart":
+		return strings.HasSuffix(stem, "_test")
+	case ".rb":
+		return strings.HasSuffix(stem, "_spec") || strings.HasSuffix(stem, "_test")
+	case ".java", ".kt":
+		return strings.HasSuffix(stem, "Test") || strings.HasSuffix(stem, "Tests")
+	case ".cs":
+		return strings.HasSuffix(stem, "Tests") || strings.HasSuffix(stem, "Test")
+	case ".swift":
+		return strings.HasSuffix(stem, "Tests")
+	case ".php":
+		return strings.HasSuffix(stem, "Test") || strings.HasSuffix(stem, "test")
+	}
+	return false
+}