tests/patterns: support multiple test files for a pattern (#161)

Allow either a single test file in tests/patterns/${pattern}.hexpat.${ext},
as we do now, or multiple files in tests/patterns/${pattern}.hexpat/*.

Closes #158.

tests/patterns/CMakeLists.txt

@@ -22,16 +22,22 @@ set_target_properties(patterns_tests PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${CMAKE
 foreach (pattern IN LISTS PATTERNS)
     get_filename_component(PATTERN_NAME ${pattern} NAME)
 
-    file(GLOB TEST_FILES "${CMAKE_CURRENT_SOURCE_DIR}/test_data/${PATTERN_NAME}.*")
+    file(GLOB TEST_FILES "${CMAKE_CURRENT_SOURCE_DIR}/test_data/${PATTERN_NAME}/*")
+    if (NOT TEST_FILES)
+        file(GLOB TEST_FILES "${CMAKE_CURRENT_SOURCE_DIR}/test_data/${PATTERN_NAME}.*")
+        list(SUBLIST TEST_FILES 0 1 TEST_FILES)
+    endif ()
 
     if (TEST_FILES)
-        list(GET TEST_FILES 0 TEST_FILE)
+        foreach (TEST_FILE IN LISTS TEST_FILES)
+            get_filename_component(TEST_FILENAME ${TEST_FILE} NAME)
+            set(TEST_NAME "Patterns/${PATTERN_NAME}/${TEST_FILENAME}")
+            add_test(NAME ${TEST_NAME} COMMAND patterns_tests "${PATTERN_NAME}" "${pattern}" "${PATTERN_INCLUDES}" "${TEST_FILE}" WORKING_DIRECTORY ${CMAKE_BINARY_DIR})
+            set_tests_properties(${TEST_NAME} PROPERTIES SKIP_RETURN_CODE 77)
+        endforeach ()
     else ()
-        set(TEST_FILE "")
+        set(TEST_NAME "Patterns/${PATTERN_NAME}")
+        add_test(NAME ${TEST_NAME} COMMAND patterns_tests "${PATTERN_NAME}" "${pattern}" "${PATTERN_INCLUDES}" WORKING_DIRECTORY ${CMAKE_BINARY_DIR})
+        set_tests_properties(${TEST_NAME} PROPERTIES SKIP_RETURN_CODE 77)
     endif ()
-
-    set(TEST_NAME "Patterns/${PATTERN_NAME}")
-
-    add_test(NAME ${TEST_NAME} COMMAND patterns_tests "${PATTERN_NAME}" "${pattern}" "${PATTERN_INCLUDES}" "${TEST_FILE}" WORKING_DIRECTORY ${CMAKE_BINARY_DIR})
-    set_tests_properties(${TEST_NAME} PROPERTIES SKIP_RETURN_CODE 77)
-endforeach ()
+endforeach ()