feat(go): enrich snapshots with package ownership

go-agent/internal/provenance/provenance_test.go

@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+package provenance
+
+import "testing"
+
+func TestParseOwnerMatchesSupportedPackageManagers(t *testing.T) {
+	cases := []struct{ tool, output, want string }{
+		{"pacman", "/usr/bin/x is owned by core/example 1.2-1", "core/example 1.2-1"},
+		{"dpkg", "example: /usr/bin/x", "example"},
+		{"rpm", "example-1.2-1.x86_64", "example-1.2-1.x86_64"},
+		{"rpm", "file /tmp/x is not owned by any package", ""},
+	}
+	for _, tc := range cases {
+		if got := parseOwner(tc.tool, tc.output); got != tc.want {
+			t.Fatalf("%s %q -> %q, want %q", tc.tool, tc.output, got, tc.want)
+		}
+	}
+}