test: Print the seed for each iteration in failing tests or info prints

Change-Id: I706ffb9c8b19c9afbb378accbfa88e2a807867ee
Signed-off-by: Gunes Bayir <gunes.bayir@arm.com>

Author: gunes-arm

tests/framework/Framework.cpp

@@ -745,6 +745,11 @@ void Framework::set_seed(unsigned int seed)
 {
     _seed = seed;
 }
+
+unsigned int Framework::get_seed() const
+{
+    return _seed;
+}
 } // namespace framework
 } // namespace test
 } // namespace arm_compute

tests/framework/Framework.h

@@ -350,6 +350,12 @@ class Framework final
      */
     void set_seed(unsigned int seed);
 
+    /** Get the seed set by the framework.
+     *
+     * @return the seed
+     */
+    unsigned int get_seed() const;
+
 private:
     Framework();
     ~Framework() = default;

tests/validation/Validation.h

@@ -498,6 +498,12 @@ void validate(const IAccessor       &tensor,
         ARM_COMPUTE_TEST_INFO(num_mismatches << " values (" << std::fixed << std::setprecision(2) << percent_mismatches
                                              << "%) mismatched (maximum tolerated " << std::setprecision(2)
                                              << tolerance_number * 100 << "%)");
+        if (framework::Framework::get().num_iterations() > 1)
+        {
+            // If number of test iterations > 1, the initially printed seed is dynamic.
+            // Print the seed for each failing test/information printout.
+            ARM_COMPUTE_TEST_INFO("Seed: " << framework::Framework::get().get_seed());
+        }
         ARM_COMPUTE_EXPECT(num_mismatches <= absolute_tolerance_number, framework::LogLevel::ERRORS);
     }
 }