fuzz: Add a testcase for each fuzzer with a corpus

Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>

tests/fuzz/CMakeLists.txt

@@ -15,7 +15,15 @@ macro(fuzzer name)
     else()
         target_sources(${name} PRIVATE fuzzer.c)
         # Run the fuzzer to make sure it works
-        # add_test(${name} ${CMAKE_CURRENT_BINARY_DIR}/${name} EXAMPLE)
+        if (EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/${name}_corpus")
+            file(GLOB files "${CMAKE_CURRENT_SOURCE_DIR}/${name}_corpus/*")
+            set(i 0)
+            foreach(file ${files})
+                add_test(${name}_${i}
+                         ${CMAKE_CURRENT_BINARY_DIR}/${name} ${file})
+                math(EXPR i "${i} + 1")
+            endforeach()
+        endif()
     endif()
 endmacro()