Reduce number of fuzztest iterations to speed up tests.
Through repeated runs, it will still get the same coverage.
And the OSSBuild fuzz infrastructure has much more CPU power anyway.
diff --git a/tests/fuzztest/SConscript b/tests/fuzztest/SConscript
index 0a00a63..62fb91d 100644
--- a/tests/fuzztest/SConscript
+++ b/tests/fuzztest/SConscript
@@ -3,6 +3,7 @@
import sys
import time
import zipfile
+import random
import subprocess
Import("env", "malloc_env")
@@ -57,7 +58,7 @@
if env.get('EMBEDDED'):
iterations = 100
else:
- iterations = 10000
+ iterations = 1000
env.RunTest(fuzz, ARGS = [str(seed), str(iterations)])
generate_message = malloc_env.Program(["generate_message.c",
@@ -73,7 +74,8 @@
# Run against the latest corpus from ossfuzz
# This allows quick testing against regressions and also lets us more
-# completely test slow embedded targets.
+# completely test slow embedded targets. To reduce runtime, only a subset
+# of the corpus is fuzzed each time.
def run_against_corpus(target, source, env):
corpus = zipfile.ZipFile(str(source[1]), 'r')
count = 0
@@ -82,7 +84,13 @@
if env.has_key("TEST_RUNNER"):
args = [env["TEST_RUNNER"]] + args
+ if env.has_key("FUZZTEST_CORPUS_SAMPLESIZE"):
+ samplesize = int(env["FUZZTEST_CORPUS_SAMPLESIZE"])
+ else:
+ samplesize = 100
+
files = [n for n in corpus.namelist() if not n.endswith('/')]
+ files = random.sample(files, 100)
for filename in files:
sys.stdout.write("Fuzzing: %5d/%5d: %-40.40s\r" % (count, len(files), filename))
sys.stdout.flush()
