test: fix problem with helper scripts being executed by `setup.py test`

test/gen_access_pattern.py

@@ -3,6 +3,7 @@
 import random
 import argparse
 
+def main():
     desc = """
     Generate random access pattern.
     Each address in range [base, base+length) will be accessed only once,
@@ -28,3 +29,6 @@ data = [random.randrange(0, 2**data_width) for _ in range(length)]
 
     for a, d in zip(address, data):
         print('0x{:08x},0x{:08x}'.format(a, d))
+
+if __name__ == "__main__":
+    main()

test/gen_config.py

@@ -43,6 +43,7 @@ data_widths = [32]
 bist_lengths = [1, 1024, 8192]
 bist_randoms = [False]
 
+def main():
     parser = argparse.ArgumentParser(description='Generate configuration for all possible argument combinations.',
                                      formatter_class=argparse.ArgumentDefaultsHelpFormatter)
     parser.add_argument('--sdram-modules',     nargs='+', default=modules,      help='--sdram-module options')
@@ -64,3 +65,6 @@ for i, (module, data_width, bist_length, bist_random) in enumerate(product):
 
     json_str = json.dumps(configurations, indent=4)
     print(json_str)
+
+if __name__ == "__main__":
+    main()