Handle empty input_files / output_files

Summary:
We may not always want to provide explicit input / output files; in this case, we shouldn't
specify --input or --output args when running the benchmark application.

Reviewed By: sxu

Differential Revision: D22024466

fbshipit-source-id: 3da390c16e038442a8c223dadc0ac7cb5a98f098

benchmarking/frameworks/oculus/oculus.py

@@ -144,9 +144,11 @@ def verifyBenchmarkFile(self, benchmark, filename, is_post):
     def _composeRunCommand(self, env_vars, program, platform,
                            test, inputs, outputs):
         cmd = [env_vars, program,
-               "--json", platform.getOutputDir() + "report.json",
-               "--input", ' ' .join(inputs),
-               "--output", ' '.join(outputs)]
+               "--json", platform.getOutputDir() + "report.json"]
+        if len(inputs) > 0:
+            cmd.extend(["--input", ' ' .join(inputs)])
+        if len(outputs) > 0:
+            cmd.extend(["--output", ' '.join(outputs)])
         if "commands" in test:
             if "oculus" in test["commands"]:
                 for key in test["commands"]["oculus"]: