Correct test

This was trying to test for issue in #1723 but was incorrect.

4 files changed, 18 insertions, 3 deletions

diff --git a/src/tests/test_aead.cpp b/src/tests/test_aead.cpp
index c31eaecdf..e8e745487 100644
--- a/src/tests/test_aead.cpp
+++ b/src/tests/test_aead.cpp
@@ -442,8 +442,8 @@ class AEAD_Tests final : public Text_Based_Test
          result.test_eq("same provider", enc_provider, dec_provider);
 
          // FFI currently requires this, so assure it is true for all modes
-         result.test_gte("enc buffer sizes ok", enc->update_granularity(), enc->minimum_final_size());
-         result.test_gte("dec buffer sizes ok", dec->update_granularity(), dec->minimum_final_size());
+         result.test_gt("enc buffer sizes ok", enc->update_granularity(), enc->minimum_final_size());
+         result.test_gt("dec buffer sizes ok", dec->update_granularity(), dec->minimum_final_size());
 
          // test enc
          result.merge(test_enc(key, nonce, input, expected, ad, algo));
diff --git a/src/tests/test_modes.cpp b/src/tests/test_modes.cpp
index ea74d795a..b371c476b 100644
--- a/src/tests/test_modes.cpp
+++ b/src/tests/test_modes.cpp
@@ -115,7 +115,7 @@ class Cipher_Mode_Tests final : public Text_Based_Test
          const size_t min_final_bytes = mode.minimum_final_size();
 
          // FFI currently requires this, so assure it is true for all modes
-         result.test_gte("buffer sizes ok", update_granularity, min_final_bytes);
+         result.test_gt("buffer sizes ok", update_granularity, min_final_bytes);
 
          result.test_throws("Unkeyed object throws", [&]() {
             Botan::secure_vector<uint8_t> bad(update_granularity);
diff --git a/src/tests/tests.cpp b/src/tests/tests.cpp
index d26ea7b68..7cc4f1b40 100644
--- a/src/tests/tests.cpp
+++ b/src/tests/tests.cpp
@@ -316,6 +316,20 @@ bool Test::Result::test_gte(const std::string& what, size_t produced, size_t exp
    return test_success();
    }
 
+bool Test::Result::test_gt(const std::string& what, size_t produced, size_t expected)
+   {
+   if(produced <= expected)
+      {
+      std::ostringstream err;
+      err << m_who;
+      err << " " << what;
+      err << " unexpected result " << produced << " <= " << expected;
+      return test_failure(err.str());
+      }
+
+   return test_success();
+   }
+
 bool Test::Result::test_ne(const std::string& what, const std::string& str1, const std::string& str2)
    {
    if(str1 != str2)
diff --git a/src/tests/tests.h b/src/tests/tests.h
index 2d23f19b5..ad666ff4c 100644
--- a/src/tests/tests.h
+++ b/src/tests/tests.h
@@ -303,6 +303,7 @@ class Test
 
             bool test_lt(const std::string& what, size_t produced, size_t expected);
             bool test_lte(const std::string& what, size_t produced, size_t expected);
+            bool test_gt(const std::string& what, size_t produced, size_t expected);
             bool test_gte(const std::string& what, size_t produced, size_t expected);
 
             template<typename T>