Add basic test for TPM UUID class

Constify some member functions

1 files changed, 3 insertions, 3 deletions

diff --git a/src/lib/prov/tpm/uuid.h b/src/lib/prov/tpm/uuid.h
index 0094f4f83..0cfe6a46f 100644
--- a/src/lib/prov/tpm/uuid.h
+++ b/src/lib/prov/tpm/uuid.h
@@ -86,14 +86,14 @@ class UUID
          return h;
          }
 
-      const std::vector<uint8_t> binary_value() const { return m_uuid; }
+      const std::vector<uint8_t>& binary_value() const { return m_uuid; }
 
-      bool operator==(const UUID& other)
+      bool operator==(const UUID& other) const
          {
          return m_uuid == other.m_uuid;
          }
 
-      bool operator!=(const UUID& other) { return !(*this == other); }
+      bool operator!=(const UUID& other) const { return !(*this == other); }
 
       bool is_valid() const { return m_uuid.size() == 16; }