From f4240cc8a4545e4d2e2f926a72aa911d5373ab95 Mon Sep 17 00:00:00 2001
From: Eric Smith <brouhaha@fedoraproject.org>
Date: Thu, 15 Sep 2016 02:00:29 -0600
Subject: Add optional SEED=n command line option to Makefile, and -S n command
 line option to test scripts, for deterministic regression tests.

---
 tests/bram/generate.py | 19 ++++++++++++++++---
 tests/bram/run-test.sh | 17 ++++++++++++++++-
 2 files changed, 32 insertions(+), 4 deletions(-)

(limited to 'tests/bram')

diff --git a/tests/bram/generate.py b/tests/bram/generate.py
index 05a7ed027..cab81255c 100644
--- a/tests/bram/generate.py
+++ b/tests/bram/generate.py
@@ -1,11 +1,11 @@
 #!/usr/bin/env python3
 
+import argparse
 import os
 import sys
 import random
 
 debug_mode = False
-seed = (int(os.times()[4]*100) + os.getpid()) % 900000 + 100000
 
 def create_bram(dsc_f, sim_f, ref_f, tb_f, k1, k2, or_next):
     while True:
@@ -243,10 +243,23 @@ def create_bram(dsc_f, sim_f, ref_f, tb_f, k1, k2, or_next):
     print("  end", file=tb_f)
     print("endmodule", file=tb_f)
 
-print("Rng seed: %d" % seed)
+parser = argparse.ArgumentParser(formatter_class = argparse.ArgumentDefaultsHelpFormatter)
+parser.add_argument('-S', '--seed',  type = int, help = 'seed for PRNG')
+parser.add_argument('-c', '--count', type = int, default = 5, help = 'number of test cases to generate')
+parser.add_argument('-d', '--debug', action='store_true')
+args = parser.parse_args()
+
+debug_mode = args.debug
+
+if args.seed is not None:
+    seed = args.seed
+else:
+    seed = (int(os.times()[4]*100) + os.getpid()) % 900000 + 100000
+
+print("PRNG seed: %d" % seed)
 random.seed(seed)
 
-for k1 in range(5):
+for k1 in range(args.count):
     dsc_f = open("temp/brams_%02d.txt" % k1, "w")
     sim_f = open("temp/brams_%02d.v" % k1, "w")
     ref_f = open("temp/brams_%02d_ref.v" % k1, "w")
diff --git a/tests/bram/run-test.sh b/tests/bram/run-test.sh
index f0bf0131e..a30416787 100755
--- a/tests/bram/run-test.sh
+++ b/tests/bram/run-test.sh
@@ -4,11 +4,26 @@
 # MAKE="make -j8" time bash -c 'for ((i=0; i<100; i++)); do echo "-- $i --"; bash run-test.sh || exit 1; done'
 
 set -e
+
+OPTIND=1
+count=5
+seed=""    # default to no seed specified
+debug=""
+while getopts "c:S:" opt
+do
+    case "$opt" in
+	c) count="$OPTARG" ;;
+	d) debug="-d" ;;
+	S) seed="-S $OPTARG" ;;
+    esac
+done
+shift "$((OPTIND-1))"
+
 rm -rf temp
 mkdir -p temp
 
 echo "generating tests.."
-python3 generate.py
+python3 generate.py $debug -c $count $seed
 
 {
 	echo -n "all:"
-- 
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